The Upper Miocene-Lower Pliocene Utsira Formation Thickness of the Upper Miocene - Lower Pliocene Utsira Formation in the northern North Sea 2° 4° (Extent and thickness, age from fossil and strontium isotope correlations, lithology, Thickness depth (m) 250 225 34/2-4 paleobathymetry and regional correlation) 200 175 34/4-6 150 34/4-7 125 34/7-1 100 34/8-3A 75 34/8-1 Tor Eidvin, Fridtjof Riis and Ine T. Gjeldvik n 50 34/7-2 P2 o 25 i
35/11-1 t 0 a
Norwegian Petroleum Directorate (NPD), Stavanger, Norway, -25 c
35/11-14 S n -50 34/10-17
61° 34/10-23 u 61° r
Professor Olav Hanssens vei 10, P. O. Box 600, N-4003 Stavanger www.npd.no, 29/3-1 t
P3 e
[email protected], [email protected], [email protected] n
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Acknowledgment: Drawing Rune Goa, © The Norwegian Petroleum Directorate 30/6-3 l NORWAY O
30/5-2
p o UK Hutton T The Utsira Formation represents a huge sedimentary depositional system in the northern North Sea (about 450 km long and sand 90 km wide) comprising one large sandy depo-center (250-300 m in the southern Viking Graben) and an area with 80-100 m 25/2-10 S thick sandy deposits in the northern Viking Graben. The western central area comprises a large deltaic system which prograded 25/1-8 S P1 eastwards in the Early and Middle Miocene, but where Late Miocene - Early Pliocene sediments (Utsira Formation) are thin or
absent. Far to the north, in the Tampen area, the Utsira Formation is represented by a thin glauconitic unit overlying Oligocene Partly eroded strata and deposited close to the Miocene-Pliocene transition. This member is thought to cap the main Utsira Formation sands in the north-eastern part of the basin (Profile 2, Rundberg & Eidvin 2005, Eidvin & Rundberg 2007). Within the Tampen area the glauconitic member is locally absent and Upper Pliocene deposits lie unconformably on Paleogene sediments, e.g. in the Tordis 25/10-2 59° 24/12-1 59° Field area (Eidvin 2009 and Eidvin & Øverland 2009). We suggest dividing the Utsira Formation into three members, viz. South- 16/1-1 16/1-2 16/1-4 16/2-1 ern Utsira Member, Northern Utsira Member and a Glauconitic Utsira Member in the northernmost part (see Fig. 21). In the same P4 16/3-2 WELL 34/4−6 WELL 34/4−7 way as the Skade Formation, in the western part of the Norwegian sector block 30 and 25, the Utsira Formation merges with P5 16/5-1 parts of Hutton sand (see Profile 1). 15/6-3
15/12-3 GAMMA RAY Unit:gAPI LITHOLOGY LITHOSTRATIGRAPHIC UNITS / SUBSERIES SERIES FORAMINIFERALBENTHIC ASSEMBLAGES PLANKTONIC FOSSIL ASSEMBLAGES PALEOBATHYMETRY FROM AGES ISOTOPE Sr (Ma) FORAMINIFERAL TESTS SAMPLES (meters) DEPTH (mRKB) DEPTH Rundberg & Eidvin (2005) pointed out an obvious correlation conflict between the Utsira and Skade formation in the type wells N 0 100 GAMMA RAY 1000 DC Unit:gAPI LITHOLOGY LITHOSTRATIGRAPHIC UNITS / SERIES SUBSERIES FORAMINIFERALBENTHIC ASSEMBLAGES PLANKTONIC FOSSIL ASSEMBLAGES PALEOBATHYMETRY FROM AGES ISOTOPE Sr FORAMINIFERAL (Ma) TESTS (meters) SAMPLES
DEPTH (mRKB) DEPTH 01 00 SWC/ 1000 DC 1010 DC of Isaksen & Tonstad (1989) and showed the need for a revision of the base of the Utsira Formation. Eidvin & Rundberg (2007) 1020 DC 1020 DC 1075 1030 DC HANNAI 1050 DC 2° 4°
UNDEFINED suggested an adjustment of the base of the Utsira in the type well 16/1-1 from 1064 to 815 m, and noted also that after such a ELPHIDIELLA 1050 1038 SWC ASSEMBLAGE 1040 DC OUTER NERITIC 1070 DC Extent of the Hutton sand (Lower Miocene-Upper Pliocene after Gregersen & Johannessen 2007) 1050 DC 1050 ASSEMBLAGE PACHYDERMA revision the well 16/1-1 is no longer the appropriate choice as the type well for the sandy system. It penetrates only thin sand 1057 SWC Extent of glauconitic Utsira Formation according to Rundberg & Eidvin (2005) 1060 DC 1100 DC 1061 SWC (DEXTRAL) ASSEMBL. NEOGLOBOQUADRINA 1100 1063 SWC 1110 DC Extent of the part of the Utsira Formation with source from the Sognefjorden area 1120 DC 1070 DC 1130 DC 1076 SWC 1125 and does not represent typical succession of the sandstones of the Utsira Formation. Consequently, we suggest 24/12-1 from 730 Investigated wells with Utsira Formation 1140 DC 1080 DC 1150 DC
1150 1090 DC Wells where the Utsira Formation is not analysed/present UPPER PLIOCENE NORDLAND GROUP CIBICIDES - GROSSUS 1170 DC to 495 m as the new well type section (also the well reference section for the Southern Utsira Member, Fig. 9, Profile 4). We sug- 1100 DC Not investigated wells (SINISTRAL) 1180 DC 1100 Ma 1104 SWC 1190 DC
OUTER NERITIC - UPPER BATHYAL 1110 DC 1200 DC OD 1212025 ELPHIDIELLA HANNAI 1200
ASSEMBLAGE 1210 DC
UPPER PLIOCENE gest 30/6-3 from 750 to 680 m as the well reference section for the Northern Utsira Member (Fig. 19) and 34/4-6 from 1250 to
NORDLAND GROUP DC1120 EHREN- 1220 DC 5 GGG BERGINA 1125 NEOGLOBOQUADRINA 5,7 1230 DC ATLANTICA GGG VARIABI- TIC DC1130 Fig. 17: Thicness of the Upper Miocen - Lower Pliocene Utsira Formation in the northern
UPPER 1240 DC NERI- FORM. - LOWER
OUTER SWC1134 PLIOCENE UTSIRA MIOCENE MIOCENE LIS ASS. 1250 DC 1210 m as the well reference section for the Glauconitic Utsira Member (Fig. 1). According to our investigations the Utsira Forma- 1250 UPPER TURRILINA DC1140 ALSATICA North Sea (modified after NPD, 2011). The outline of the Miocene - Upper Pliocene Hutton OLIGOC. ASSEMBL. 26,3 1270 DC G. SOLDANII DC1150
MAMILLATA 1150 ASSEMBL. sand is after Gregersen & Johannessen (2007). Extent of the area with glauconitic sand is 1290 DC tion sands were laid down between approximately 12 to 4.5 Ma. OUTER NERITIC - UPPER BATHYAL
(SINISTRAL) ASSEMBLAGE DC1160 CIBICIDES ASSEMBLAGE GROSSUS
1300 Ma 10 1310 DC 1168 SWC according to Rundberg & Eidvin (2005). NEOGLOBOQUADRINA ATLANTICA NEOGLOBOQUADRINA DC1170
1330 DC 1175 DC1180 EHREN- 5 GG 1350 DC BERGINA 1190 SWC/DC
1350 GGG 5,5 DIATOM SP. 3 SP. DIATOM VARIA- TIC ASSEMBLAGE 5,1 1192 SWC TION NERI-
UPPER BILIS LOWER UPPER BATHYAL OUTER
G GG UTSIRA FORMA- PLIOCENE
1370 DC MIOCENE - ASSEM. DC1200 BULIMOIDES ROTALIATINA 1200 HORDALAND GROUP ASSEMBLAGE 1204 SWC
LOWER OLIGOCENE UNDE- FINED
0 20 40 60 80 100 1390 DC 27,6 DC1210 TURRILINA CENE SP. 3 LAND OLIGO- UPPER ALSATICA UPPER LOWER - LOWER OD 1204010 GROUP HORDA- ASSEM. DIATOM
ASSEMBL. BATHYAL Sea floor = 399 meters below rig floor (mRKB) 0 20 40 60 80 100 DC1220 10 DC = Ditch cuttings gAPI = American Petroleum Institute gamma ray units Sea floor = 380 meters below rig floor (mRKB) OD 1204008 G = Abundant glauconite DC = Ditch cuttings = Ice rafted pebbles SWC = Sidewall core WELL 34/2−4 = Glauconitic sand gAPI = American Petroleum Institute gamma ray units = Unconformity Fig. 1 G = Abundant glauconite WELL 34/8−3A = Ice rafted pebbles = Glauconitic sand WELL 35/11−1 = Unconformity Fig. 2 WELL 30/6-3
WELL 35/11−14S
GAMMA RAY Unit:gAPI TESTS (Ma) SERIES / SUBSERIES SERIES FORAMINIFERALBENTHIC ASSEMBLAGES PLANKTONIC FOSSIL ASSEMBLAGES LITHOLOGY LITHOSTRATIGRAPHIC UNITS FROM AGES ISOTOPE Sr FORAMINIFERAL TESTS (Ma) SAMPLES (meters) PALEOBATHYMETRY
DEPTH (mRKB) DEPTH 0 100 GAMMA RAY
1300 DC TESTS (Ma)
WELL 34/8−1 1300 Unit:gAPI WELL 34/7−1 1310 DC
LITHOLOGY LITHOSTRATIGRAPHIC UNITS / SUBSERIES SERIES FORAMINIFERALBENTHIC ASSEMBLAGES PLANKTONIC FOSSIL ASSEMBLAGES PALEOBATHYMETRY SAMPLES (meters) GAMMA RAY DEPTH (mRKB) DEPTH 0 00 Unit:GAPI 1320 DC 1000 DC Sr ISOTOPE AGES FROM AGES ISOTOPE Sr TESTS (Ma) MOLLUSC FROM AGES ISOTOPE Sr TESTS (Ma) FORAMINIFERAL DEPTH (mRKB) DEPTH 0 100 LITHOLOGY GROUP LITHOSTRATIGRAPHIC FORMATION LITHOSTRATIGRAPHIC SERIES/SUBSERIES FORAMINIFERAL BENTHIC ASSEMBLAGES PLANKTONIC FOSSIL ASSEMBLAGES PALEOBATHYMETRY (meters) SAMPLES UNDE- 1010 DC GAMMA RAY 600 DC 1330 DC NEOGLOBO- FINED Unit:GAPI GAMMA RAY QUADRINA LITHOLOGY LITHOSTRATIGRAPHIC GROUPS LITHOSTRATIGRAPHIC FORMATIONS / SUBSERIES SERIES BENTHIC FORANINIFERAL ASSEMBLAGES PLANKTONIC FOSSIL ASSEMBLAGES PALEOBATHYMETRY MOLLUSC FROM AGES ISOTOPE Sr FORANINIFERAL SAMPLES (meters) Sr ISOTOPE AGES FROM AGES ISOTOPE Sr 1020 DC (mRKB)DEPTH 50 150 Unit:gAPI PACHYDERMA 1340 DC (SINISTRAL) LITHOLOGY LITHOSTRATIGRAPHIC UNITS / SUBSERIES SERIES FORAMINIFERALBENTHIC ASSEMBLAGES PLANKTONIC FOSSIL ASSEMBLAGES PALEOBATHYMETRY SAMPLES (meters) 1030 DC 660 DC (mRKB) DEPTH ASSEMBLAGE 1350 DC 0 100 620 DC
1350 520 DC 1040 DC 670 DC 1360 DC NORION NEOGLOBO- OUTER
ASSEMBLAGE 1050 DC QUADRINA 530 DC 680 DC LABRA- NERITIC - 1370 DC 1050 PACHYDER- 640 DC 1060 DC DORICUM UPPER 540 DC Ma 690 DC MA (SINIST.) BULLOIDES PLEI- STO- CENE 1070 DC NORD- LAND GROUP ASSEM. ASSEMBL. BATHYAL NERITIC 650 ASSEMBLAGE GLOBIGERINA 550 DC BULLOIDES
1390 DC 700 DC 550 GLOBIGERINA 700 1080 DC ASSEMBLAGE
ASSEMBLAGE 660 DC GAMMA RAY 1400 DC 560 DC ASSEMBLAGE 1090 DC 710 DC OUTER TO MIDDLE TO OUTER 1400
Unit:gAPI Ma UPPER PLIOCENE
CIBICIDES GROSSUS - GROSSUS CIBICIDES 670 DC
Ma ELPHIDIELLA HANNAI
GAMMA RAY UPPER BATHYAL LITHOLOGY LITHOSTRATIGRAPHIC UNITS / SUBSERIES SERIES FORAMINIFERALBENTHIC ASSEMBLAGES PLANKTONIC FOSSIL ASSEMBLAGES PALEOBATHYMETRY FROM AGES ISOTOPE Sr (Ma) FORAMINIFERAL TESTS SAMPLES (meters) DEPTH (mRKB) DEPTH 570 DC 1410 DC OUTER NERITIC - 1100 DC 40 140 ASSEMBLAGE 720 DC 1100 OUTER NERITIC
Unit:gAPI CIBICIDES GROSSUS UPPER PLIOCENE UPPER MIOC. - LOWER PLIOC. 800 DC 5 UNDE- FINED Ma UPPER PLIOCENE UPPER PLIOCENE LITHOLOGY LITHOSTRATIGRAPHIC UNITS / SUBSERIES SERIES FORAMINIFERALBENTHIC ASSEMBLAGES PLANKTONIC FOSSIL ASSEMBLAGES PALEOBATHYMETRY FROM AGES ISOTOPE Sr (Ma) FORAMINIFERAL TESTS SAMPLES (meters) DEPTH (mRKB) DEPTH 1420 DC 2,3*+5,1 680 DC
NORDLAND GROUP 1110 DC DC580
0 100 NORDLAND GROUP 730 DC 1000 DC GROSSUS CIBICIDES CIBICIDES GROSSUS - GROSSUS CIBICIDES 1430 DC 1120 DC 5,5+7,0 690 DC 830 DC GGG EHREN- Log 740 DC 5 5 U. MIOC. - 1130 DC 1010 DC 1440 DC 5 BERGINA 600 DC (SINISTRAL) 4,0* 700 DC NEOGLOBOQUAD- ATLANTICA RINA (SINISTRAL) ASSEMBLAGE 850 DC 700 GGG L. PLIOC. 2,3*+6,0 750 DC 600 Ma 750 1450 DC VARIABI- 1140 DC
1450 610 DC 7,0+12,7** 710 DC 1020 DC ELPHIDIELLA HANNAI LIS ASS. UNDEFINED OUTER NERITIC - UPPER BATHYAL G 1150 DC 6,1+6,3 760 DC OUTER 1020,5 SWC NERITIC HANNAI 1460 DC 880 DC 1150 G G (SINISTRAL) ASSEMBLAGE(SINISTRAL)
UVIGER- ASSEMBLAGE ASSEMBL. 620 DC NORDLAND GROUP 1025 1160 DC 12,3** 720 DC ELPHIDIELLA G 6,1*+7,3+9,3 1470 DC INA PYG- 770 DC
1030 DC UPPER MIOCENE BOLBOFORMA SUBFRAGORI ASSEMBLAGE UTSIRA 900 DC NERITIC 900 MIO-
MEA LAN- FORMA 1170 DC 630 DC NEOGLOBOQUADRINA BOLBO- CENE 14,5** 730 DC ATLANTICA
NEOGLOBOQUADRINA ATLANTICA NEOGLOBOQUADRINA 780 DC FRAGORI 5,9*+6,4* OUTER NERITIC
1480 DC UPPER ASSEMBL. GLOBIGERINA BULLOIDES GLOBIGERINA LOWER PLIOCENE UPPER UPPER MIOCENE - MIOCENE UPPER
2,6 FORMATION UTSIRA UNDEFINED 920 DC GERI ASS. 1040 DC 1180 DC ASSEMBLAGE 1041,5 SWC 5 10 MIOCENE 640 DC MIDDLE TO INNER MIDDLE TO 2,4*+8,7 740 DC
1490 DC EPONIDES FORMATION 790 DC
SPHAEROIDINA BULLOIDES ASSEMBLAGE UPPER 1190 DC UTSIRA FORMATION BOLBOFORMA UMBONATUS FLORILUS BOUANUS G UNDE- NERITIC MIDDLE 10 650 DC MIOC. 1050 DC ASSEM. 1500 DC Log 10 SUBFRAGORI 950 DC - STILOSTO- 800 DC 650 12,2 750 DC 800 10 750 1050 GLOBIG. 1052 SWC 1500 MELLA SP. FINED 1200 DC UTSIRA 5,1 F. BOUEANUS - 1200 BULLOIDES OUTER 660 DC NERITIC PLIOCENE 1510 DC ASSEMBL. G ASSEMLAGE 810 DC G. SUBGLOBOSA
1210 DC UNDEFINED 9,8+12,4 760 DC UPPER MIO- EHRENBER- FORMATION 1060 DC GINA VARIA- CENE - LOWER 980 DC G BILIS 1520 DC DIATOM 1220 DC MIDDLE NERITIC 670 DC UNDE- 820 DC 12,2 770 DC
SP. 4 - DIA- FORMATION UTSIRA 1070 DC ASSEMBLAGE 1000 DC 1530 DC LOWER - 1230 DC 680 DC 1000 TOM SP. 5 NORDLAND GROUP MIOCENE FINED 1073 SWC 830 DC 10,1+12,5 780 DC UPPER PLIOCENE 1020 DC ASSEMBL. 1075 1540 DC
CIBICIDES GROSSUS 1240 DC NORDLAND GROUP UPPER GROUP 690 DC
1080 DC FINED 1030 DC UNDE- 25,5+26,5 840 DC SP. 3 21,7** 790 DC 1083,5 SWC 1550 DC TURRILINA DIATOM OLIGOCENE
10 HORDALAND UNDEFINED 1550 1250 ALSATICA G 700 DC 1050 DC 25+25,4 850 DC 700 850 UNDEFINED MIDDLE - UPPER MIOCENE UPPER BATHYAL 1090 DC Ma 1560 DC 1260 DC ASSEMBL. ASSEMBLAGES 3,9*+12,1 11,4 800 DC (SINISTRAL) ASSEMBLAGE (SINISTRAL) 800 1060 DC Thickness of the Upper Miocene50 70 90 110 130 150 - Lower Pliocene 1094 SWC 710 DC OUTER NERITIC - UPPER BATHYAL 1070 DC 1570 DC 1270 DC OD 1204002 1080 DC HORDA- LOWER - TURRILINA UPPER 1,4* 810 DC ASSEMBLAGE 1100 DC GROUP 720 DC NEOGLOBOQUADRINA ATLANTICA NEOGLOBOQUADRINA 1100 1280 DC ALSATICA 1102,5 SWC 1090 DC 1580 DC UPPER BATHYAL LAND UPPER DIATOM BAT- UPPER GGG 3 SP. ASSEMBL. 13,0+14,1 820 DC ASSEMBLAGE 1100 DC OLIGOCENE Sea floor = 387 meters below rig floor (mRKB) GROUP OLIGOC. SP. 3 ASS. HYAL
EHREN- LOWER - HORDALAND ASSEMBLAGE
1290 DC 730 DC OUTER NERITIC 0 20 40 60 80 100 1100 ALSATICA DIATOM 1110 DC HORDALAND GROUP 1110 DC 1590 DC ASSEMBL. UNDEFINED GYRODINA SOL- GYRODINA TURRILINA
5 BERGINA MIOCENE MIDDLE LOWER - UPPER OLIGOCENE gAPI = American Petroleum Institute gamma ray units UPPER PLIOCENE ASSEMBL. BOLBOFORMA RETICULATA BOLBOFORMA UPPER BATHYAL GG 1120 DC GIRARDANA DANII 10,6 830 DC BULIMINA ELONGATA BULIMINA
NORDLAND GROUP 1300 DC BOLBOFORMA BADENENSIS - BADENENSIS BOLBOFORMA 1114,5 SWC TIC 5,0 VARIABI- 0 20 40 60 80 100 TION 0 20 40 60 80 100 1600 DC DC = Ditch cuttings UPPER NERI- 1130 DC - LOWER OUTER UTSIRA PLIOCENE
1120 DC MIOCENE GGG FORMA- LIS ASS. 840 DC 1140 DC * = Caved 0 20 40 60 80 100 10,3+10,9 1123 SWC OD 1204011 OD 1204012 DIATOM SP. 4 - 1150 DC OD 1204003 Sea floor = 390 meters below rig floor (mRKB) 1125 SWC/ LOWER DIATOM SP. 5 = Ice rafted pebbles 1130 DC 1160 DC Sea floor = 424 meters below rig floor (mRKB) MIOCENE ASSEMBLAGE Sea floor = 405 meters below rig floor (mRKB) DC = Ditch cuttings OD 1209017 1170 DC = Unconformity OUTER NERITIC - UPPER BATHYAL DC = Ditch cuttings DC = Ditch cuttings Fig. 15 gAPI = American Petroleum Institute gamma ray units Sea oor = 130 meters below rig oor (mRKB)
CIBICIDES ASSEMBLAGE GROSSUS 1180 DC FINED Ma UNDE- gAPI = American Petroleum Institute gamma ray units 1140 DC 1190 DC gAPI = American Petroleum Institute gamma ray units G = Abundant glauconite DC = Ditch cuttings 1143 SWC 1200 DC G = Abundant glauconite G = Abundant glauconiteUtsira Formation = Ice rafted pebbles GAPI = American Petroleum Institute gamma ray units 1200
(SINISTRAL) ASSEMBLAGE (SINISTRAL) = Ice rafted pebbles 1150 DC 10 = Ice rafted pebbles = Unconformity = Ice rafted pebbles 1150 G 1220 DC = Glauconitic sand CIBICI. 1155 SWC = Glauconitic sand Fig. 18 = Abundant molluscs and mollusc fragments 5
DUTEM- UPPER = Unconformity G ATLANTICA NEOGLOBOQUADRINA = Unconformity 1160 DC 1240 DC Fig. 13 Fig. 14 * = Caved PLEI TIC TION ALSATICA ASSEMBL. UPPER OLIGOCENE
G GG LOWER NERI- 1166 SWC TURRILINA ** = Reworked UTSIRA OUTER FORMA- PLIOCENE ASSEM. 1260 DC G MIOCENE - 1170 DC Unconformity Fig. 19 28,6 1280 DC 1175 1180 DC 28,2 1300 DC 1300 UPPER BATHYAL 2° 4° 1190 DC 1320 DC HORDALAND GROUP GROUP LOWER UPPER
26,1 LOWER 10 BATHYAL DIATOM SP. 3 SP. DIATOM HORDALAND ASSEMBLAGE BULIMOIDES OLIGOCENE ASSEMBLAGE ROTALIATINA 1340 DC 1200 DC 0 20 40 60 80 100 BULIMOIDES OLIGOCENE ROTALIATINA ASSEMBLAGE DIATOM SP. 3 ASSEMBLAGE SP. DIATOM
40 60 80 100 120 140 1360 DC
Sea floor = 353 meters below rig floor (mRKB) OD 1204009 DC = Ditch cuttings Sea floor = 348 meters below rig floor (mRKB) OD 1204007 gAPI = American Petroleum Institute gamma ray units DC = Ditch cuttings G = Abundant glauconite gAPI = American Petroleum Institute gamma ray units = Ice rafted pebbles G = Abundant glauconite SWC = Sidewall core = Ice rafted pebbles = Glauconitic sand = Glauconitic sand Thickness depth (m) Northern Viking Graben - 61°N = Unconformity Fig. 3 = Unconformity Fig. 4 Northern Viking Graben - 61°N 250 34/2-4 Line NVGTI-92-105 225 34/7-1 34/8-3A 35/11-1 W E WELL 34/10−17 200 TWT (ms) WELL 34/7−2 400 – 175 SEAFLOOR
600 – PLEISTOCENE 150 34/4-6 800 – 34/4-7 UPPER PLIOCENE PROGRADING COMPLEX GAMMA RAY Unit: gAPI 125 Sr ISOTOPE AGES FROM FORAMINIFERAL TESTS (Ma) DEPTH (mRKB) DEPTH 0 100 LITHOLOGY LITHOSTRATIGRAPHIC UNITS SERIES/SUBSERIES FORAMINIFERAL BENTHIC ASSEMBLAGES PLANKTONIC FOSSIL ASSEMBLAGES PALEOBATHYMETRY (meters) SAMPLES 1000 – 919 SWC UTSIRA FORMATION SAND 920 DC 34/7-1 920 ? GAMMA RAY Unit:GAPI 930 DC 100 1200 – BASAL UPPER PLIOCENE DEPTH (mRKB)DEPTH 0 100 LITHOLOGY UNITS LITHOSTRATIGRAPHIC / SUBSERIES SERIES FORAMINIFERALBENTHIC ASSEMBLAGES PLANKTONIC FORAMINIFERAL ASSEMBLAGES PALEOBATHYMETRY FROM AGES Sr ISOTOPE (Ma) TESTS MOLLUSC FROM AGES Sr ISOTOPE (Ma) TEETH FISH (meters) SAMPLES LOWER MIOCENE 750 DC 937 SWC Mid-Miocene 940 DC unconformity
940 34/8-3A 760 DC BULLOIDES GLOBIGERINA ASSEMBLAGE 770 DC 1400 – OLIGOCENE 780 DC 950 DC 75 UTSIRA FORMATION 34/8-1 GLAUCONITIC SAND Intra Oligocene unc. 955 SWC 790 DC (U. Miocene - L. Pliocene) 960 DC 800 800 DC 960 n OD 1205004 810 DC Ma 0 10 20 25 km 970 DC P2 820 DC 50 973 SWC 830 DC 34/7-2 980 DC o
840 DC 980
5 850 DC UPPER PLIOCENE i ATLANTICA
NORDLAND GROUP NORDLAND Profile 2: East-West transect of the northern North Sea at about 61°N illustrating main sequences ASSEMBLAGE 860 DC 990 DC 25 UPPER BATHYAL OUTER NERITIC - NERITIC OUTER UPPER PLIOCENE 870 DC NORDLAND GROUP 998 SWC t
ELPHIDIELLA HANNAI 1000 DC and sedimentary architecture of the post Eocene strata. Note the mid-Miocene unconformity (red CIBICIDES GROSSUSCIBICIDES - 880 DC Ma OUTER NERITIC BATHYAL UPPER 1000 CIBICIDES ASSEMBLAGE GROSSUS NEOGLOBOQUADRINA
890 DC ASSEMBLAGE 35/11-1 (SINISTRAL) ASSEMBLAGE a line) and the seismic truncation of the Lower Miocene (modified after Eidvin & Rundberg 2001 900 6,5 6,7 900 DC 1010 DC 0 10,9 910 DC SWC/ 920 DC G 1020 DC and Rundberg & Eidvin 2005). Log 1021,5 SWC
930 DC 5 GG SWC/ c UPPER UTSIRA
OUTER UTSIRA U. MIOC.- 1030 DC
MIOCENE G G 4,7 + 4,2 NERITIC 6,9 940 DC -25 EHRENBERGINA 10 Log FORMATION G Log FM. L. PLIOC. VARIABILIS OUTER 950 DC NEOGLOBOQUADRINA ATLANTICA (SINISTRAL) 9,4 ASSEMBLAGE NERITIC G UNDEFINED
HORDA- (DEXTRAL) 8,5* 960 DC 1040 DC n STA SAXONICA - SAXONICA STA G ASSEMBLAGE BATHYAL 35/11-14 S LAND (UPPER UVIGERINA VENU-
RINA ATLANTICA 970 DC G ASS. SUBGLOBOSA 9,3* 8,3* 1048 SWC NEOGLOBOQUAD- GROUP OLIGOCENE?) GLOBOCASSIDULINA G 980 DC UNDEFINED 1050 DC
0 20 40 60 80 100 9,4* -50 34/10-17 u
GROUP 1060 DC 1060 1040 1020
HORDALAND 34/10-23
OLIGOCENE 61° DIATOM SP. 3 61°
UNDEFINED r Northern Viking Graben - 61°N ASSEMBLAGE 1070 DC UPPER BATHYAL
10 10 20 40 60 80 100 OD 1204004
Sea Floor = 160 meters below rig oor OD 1204013 t 34/10/17 DC = Ditch cuttings Sea oor = 271 meters below rig oor US/F = Microseconds per foot 29/3-1 gAPI = American Petroleum Institute gamma ray units DC = Ditch cuttings = Ice rafted pebbels = Abundant molluscs or mollusc fragments gAPI = American Petroleum Institute gamma ray units G = Abundant glaconite P3
G = Abundant glauconite = Glauconitic sand = Unconformity e * = Caved Fig. 6 = Unconformity Fig. 5
n
e
Hutton sand (informal) according to Gregersen & Johannessen (2007) c
W E o 25/1-8S 25/2-10S Seabed Upper Pliocene ms g Upp. Miocene-Low. Pliocene Formation Low. 200 Upper Pleistocene i Olig. 30/6-3 l NORWAY 370 md Upper Pliocene and Upper Pliocene wedge
Pleistocene Delta 455 md O 475 md (glacial diamicton) Basal Nordland Group (sand)
520 md Middle Miocene 30/5-2 Middle Miocene Upper Miocene-
Lower Pliocene unconformity/re ector UTSIRA FORMATION p 735 md Upper Oligocene
Basal Nordland Group (clay) o
1000 Upper Oligocene sand SKADE FORMATION 1090 md Lower Miocene Hutton T Upper Oligocene mudstones Nanna Oligocene diapirs UK OD 1205007 (informal, basal Lower Miocene) sand Profile 3: Seismic section (line NVGTI-92-208) across northern Viking Graben through well 34/10-17 and 34/10-23 (not investigated) showing subdivision of Oligocene-Mio- 40 km cene strata at about 61ºN (modified after Rundberg & Eidvin 2005).
OD 1212016
Pro le 1: This geo-section illustrates how four di erent delta sands, which constitute the outer delta front of the Hutton sand system (informal name used only in UK waters) are deposited. In Norwegian waters the Lower Miocene Skade Formation is turbitic in origin and overlays Oligocene mudstones. The Utsira Formation overlays a mud prone, distal Middle Miocene unit and thins out west from the delta front towards the 25/1-8S area. An Upper Pliocene delta builds on top of the Utsira Formation in the 25/2-10S area, modi ed after Gjeldvik et al. (2011). Reference: Gjeldvik, I. T., Eidvin, T. & Riis, F., 2011: Neogene Delta Systems In The North-Western North Sea. Poster shown at Sustainable Earth Sciences Conference & Exibition, Southern Viking Graben - 59°N Valencia, Spain, 8-10 November 2011, Available from the internet: http://www.npd.no/Global/Norsk/3-Publikasjoner/Presentasjoner/Plakat.pdf
24/12-1 16/1-2 25/2-10 S (a) WELL 25/2-10 S 25/1-8 S P1 WELL 25/10−2
GAMMA RAY Unit: GAPI LITHOLOGY LITHOSTRATIGRAPHIC UNITS / SUBSERIES SERIES BENTHIC FORANINIFERAL ASSEMBLAGES PLANKTONIC FOSSIL ASSEMBLAGES PALEOBATHYMETRY FROM AGES ISOTOPE Sr (Ma) TESTS MOLLUSC SAMPLES (meters) DEPTH (mRKB)DEPTH 0 70 ELPHIDIUM N. PACHYD. (DEX.) 260 DC EXCAVATUM ASS. 270 DC GAMMA RAY Unit:GAPI 280 DC LITHOLOGY LITHOSTRATIGRAPHIC GROUPS LITHOSTRATIGRAPHIC FORMATION SERIES/SUBSERIES BENTHIC FORAMINIFERAL ASSEMBLAGES FOSSIL PLANKTONIC ASSEMBLAGES PALEOBATHYMETRY Sr ISOTOPE AGES FROM MOLLUSC TESTS (Ma) Sr ISOTOPE AGES FROM FORAMINIFERAL TESTS (Ma) SAMPLES (meters) DEPTH (mRKB) DEPTH 0 100 442 DC NEOGLOBOQUAD- RINA PACHYDERMA 300 DC Partly eroded 300 (DEX.) ASSEMBLAGE 24/12-1 16/1-2 460 DC 320 DC GLOBIGERINA 469 DC (b) BULLOIDES 479 DC
GROSSUS ASSEMBLAGE CIBICIDES OUTER TO 488 DC 340 DC ASSEMBLAGE
MIDDLE NERITIC MIDDLE 497 DC UPPER PLIOCENE 500 506 DC 360 DC
(SIN.) DC 2,2*+2,6*+5,3 524 DC ASSEMBLAGE 380
400 DC 400 ASSEMBLAGE UPPER PLIOCENE GROBIGERINA BULLOIDES GROBIGERINA NORDLAND GROUP ATLANTICA
Ma ASSEMBLAGE SUBGLOBOSA
NEOGLOBOQUADRINA 420 DC GLOBOCASSIDULINA HANNAI ASSEMBLAGE
4,1+5,4 570 DC NERITIC INNER TO MIDDLE 5 2,6*+4,2+5,6 579 DC 440 DC 2,2*+2,5*+5,8 588 DC NEOGLOBOQ. CIBICIDES GROSSUS - ELPHIDIELLA GROSSUS CIBICIDES LOWER PLIOCENELOWER 2,1*+5,6+5,9 598 DC ATLANTICA 460 DC 600 NORDLAND GROUP (SIN.) ASSEMBL. ASSEMBLAGE PUNCTICULATA GLOBOROTALIA Ma 480 DC E. PYGMEUS - C. T. 3,6*+5,8+6,1 625 DC GLOBOROTALIA 4,1 + 5,2 490 DC LOW. N. ATLANT. (DEX.) FLORILUS BOUE- OD 1205005/2 1,2*+5,0+5,5 634 DC 1,5* + 4,5 + 4,9 500 DC
500 PUNCTICULATA 5 ANUS - SPHAE- TION
BOLBOFORMA 1,1 +5,2+5,2 643 DC PLIO- UTSIRA FORMATION * CENE 5,4 + 5,8 510 DC LOWER 2,5 UTSIRA ASSEMBLAGE METZMACHERI * FORMA- ROIDINA BULLO- MIDDLE TO INNER NERITIC INNER TO MIDDLE 5,3+5,6+6,4+10,1 652 DC 2,3* + 5,2 520 DC ASSEMBLAGE IDES ASSEMBL. Profile 4: (a) Seismic line through wells 24/12-1, 16/1-1, 16/1-2 and 16/2-1 across 10 1,2*+5,5+5,8 661 DC 530 DC ASSEMBLAGE 4,7*+7,1+9,9 670 DC 4,1* + 20,5** 540 DC southern Viking Graben showing Skade and Utsira formations. Green-coloured 4,1 +9,9+12,1 680 DC 25/10-2 * 550 DC 1,6*+2,2*+5,9 689 DC 2 x 13,3 560 DC part of gamma ray logs denotes Middle Miocene Bolboforma badenensis and UVIGERINA VENUSTA SAXONICAUVIGERINA VENUSTA 698 DC UPPER MIOCENE 570 DC FRAGORI 700 1,6 +3,7 707 DC
ASSEMBLAGE * * BOLBOFORMA 10,9 + 13,4 580 DC Bolboforma reticulata assemblages. (b) Interpretation of seismic line shown in
5,1*+5,2*+11,3 716 DC RETICULATA
OUTER NERITIC 590 DC ASSEMBLAGE BOLBOFORMA BADENENSIS - BOLBOFORMA
0 20 40 60 80 100 725 DC BULIMINA 12,6 + 13,4 600 DC ELONGATA
600 Profile 4 (a) (extended towards east through well 16/3-2. Well 16/1-2 and 24/12- GLOBIGERINO. ASSEMBLAGE 610 DC
Sea Floor = 111,6 m below rig floor (mRKB) MIOCENE MIDDLE QUADRILOBATUS gAPI = American Petroleum Institute gamma ray units NORDLAND GROUP 11,2 + 12,9 620 DC 24/12-1 1, where the Utsira Formation is investigated, have red number (modified after TRILOBA ASS. = Ice rafted pebbels 0 10 20 30 40 50 60 70 630 DC 59° 59° = Abundant molluscs or mollusc fragments Rundberg & Eidvin 2005. G = Abundant glauconite Sea floor = 141 meters below rig floor (mRKB) Fig. 7 OD 1204014 = Fish teeth DC = Ditch cuttings DC = Ditch cuttings gAPI = American Petroleum Institute gamma ray units 16/1-1 * = Caved tests from the upper part of Neogene OD 1204015 G = Abundant glauconite 16/1-2 = Abundant molluscs and mollusc fragments * = Caved Southern Viking Graben - 58°30’N ** = Reworked Southern Viking Graben - 58°30’N = Unconformity Fig. 8 16/1-4 16/2-1 Line CNST-82-06 WELL 24/12-1 WELL 16/1-2 P4 16/3-2 15/6-3 16/5-1 W E
SEAFLOOR 200 –
400 –
600 – P5 PLIOCENE 800 –
1000 – UPPER MIOCENE - LOWER PLIOCENE (UTSIRA FM SAND) DEPTH (mRKB) DEPTH GAMMA LOG RAY UNIT: gAPI LITHOLOGY GROUP LITHOSTRATIGRAPHIC FORMATION LITHOSTRATIGRAPHIC SERIES/SUBSERIES BENTHIC FORAMINIFERAL ASSEMBLAGES PLANKTONIC FOSSIL ASSEMBLAGES PALEOBATHYMETRY FROM AGES ISOTOPE Sr MOLLUSC (Ma) TESTS SAMPLES (meters)
DEPTH (mRKB) DEPTH LOG GAMMA RAY UNIT: gAPI LITHOLOGY GROUP LITHOSTRATIGRAPHIC FORMATION LITHOSTRATIGRAPHIC SERIES/SUBSERIES BENTHIC FORAMINIFERAL ASSEMBLAGES PLANKTONIC FOSSIL ASSEMBLAGES PALEOBATHYMETRY FROM AGES ISOTOPE Sr MOLLUSC (Ma) TESTS SAMPLES (meters) 16/5-1 480 DC 710 DC 1200 – MIDDLE MIOCENE CIBICIDES GLOBIGER. GROSSUS 490 DC UPP. OUTER PLIOC.
ASSEMBLAGE BULLOIDES TO MID. 500 NERITIC 2,1 500 DC 1400 – LOWER MIOCENE Mid-Miocene MONSPELIEN. ASSEMBLAGE 720 DC unconformity PSEUDOTEPIDA 510 DC 15/6-3 ASSEMBLAGE GLOBORO- 1600 – 5,8 520 DC UPPER OLIGOCENE 730 DC PLIOCENE
TALIA OUTER TO GROSSUS CIBICIDES PUNCTICU- 5,5 530 DC (SINISTRAL) ASSEMBLAGE ASSEMBLAGE Ma LATA MIDDLE NERITIC LOWER RINA ATLANTICA RINA 1800 – NEOGLOBOQUAD- PLIOCENE ASSEMBLAGE 1,9+3,4 740 DC 550 5,8 550 DC MONSPELIEN- * SINA PSEUDO- 2,2+4,1+ 560 DC TEPIDA ASSEMB. 5 5,0 Ma 750 750 DC
580 DC 5 760 DC OD 1205003 600 4,7+4,8 770 DC ASSEMBLAGE PUNCTICULATA GLOBOROTALIA
LOWER PLIOCENE 15/12-3 Profile 5: East-west geoprofile of the southern Viking Graben at about 58°30’N illustrating main sequenc- 780 DC
* es and sedimentary architecture of post Eocene strata (modified after Rundberg & Eidvin 2005). 10 650 ASSEMBLAGE 2,4+5,2+ 650 DC ** ASSEMBLAGE
UTSIRA FORMATION 11,5+16,7 790 DC 5,8+6,0+ 9,0
5,3+5,5+ 670 DC UTSIRA FORMATION **** MIDDLE TO INNER NERITIC INNER TO MIDDLE NEOGLOBOQUADRINA UPPER MIOCENE 6,3+7,7+ 10 800 15,5+15,9 800 DC 8,0+8,6 UVIGERINA VENUSTA SAXONICA UVIGERINA VENUSTA ATLANTICA (DEXTRAL) ASSEMBL. 810 DC N 5,8+6,2+ 700 8,7+8,8 700 DC BOLBOFORMA
FRAGORI 5,6+6,5+6,9 710 DC NORDLAND GROUP NORDLAND GROUP ASSEMBLAGE 11,5 820 DC 720 DC 730 DC EN- 830 DC MIDDLE TO INNER NERITIC INNER TO MIDDLE 750 Post-eocene Lithostratigraphy Of The Norwegian North Sea Including The Main Results 840 DC 760 DC G Of The Strontium Isotope Analyses
770 DC UPPER MIOCENE BADEENSIS G (DEXTRAL) ASSEMBLAGE NEOGLOBOQUADRINA ATLANTICA NEOGLOBOQUADRINA ASSEMBLAGE 850 DC BOLBOFORMA 780 DC 850 Age S Central Graben/Norwe- N
ASSEMBLAGE Epoch Gr. 790 DC SAXONICA VENUSTA UVIGERINA (Ma) 56°30’ gian Danish Basin 58° Viking Graben Frigg Area Viking Graben 62°
SIS BOLBOFORMA 800 DC 800 OUTER NERITIC MIDDLE MIOCENE UVIGERINA PYGMEA
LANGERI - UVIGERINA RETICULATA Pleistoc. 57°
810 DC LOWER
PYGMEA LANGENFELD ASSEMBLAGE
0 40 80 120 870 DC MIDDLE U. PYGMEA BOLBOFORMA LANGERI - U. OUTER Plliocene MIO- PYGMEA LANGEN- BADENENSIS 5,7-3,7 Ma Hiatus CENE FELDENSIS ASSEM. ASSEMBLAGE NERITIC Sea floor = 138,5 meters below rig floor (mRKB) 0 40 80 880 DC 5 5,6-5,2 Ma 5,0-4,1 Ma 5,3 Ma 5,2-4,5 Ma 5,5-5,2 Ma gAPI = American Petroleum Institute gamma ray units Glauconitic Utsira Fm Utsira Fm = Abundant molluscs or mollusc fragments Sea floor = 163,5 meters below rig floor (mRKB) 2° 4° Late 6,6 Ma Utsira Fm (5,7-4,2 Ma) G = Abundant glauconite DC = Ditch cuttings Miocene 10 7,4 Ma Hiatus 8,7 Ma DC = Ditch cuttings Fig. 9 gAPI = American Petroleum Institute gamma ray units Fig. 10 11,8-11,5 Ma 11,3 Ma * = Caved = Abundant molluscs or mollusc fragments 10,9-10,7 Ma Middle 13,3-10,9 Ma 12,2-10,4 Ma Hiatus = Limestone OD 1204016 G = Abundant glauconite OD 1204017 14,7 Ma Extent of the Hutton sand (Lower Miocene-Upper Pliocene after Gregersen & Johannessen 2007) Miocene NORDLAND GROUP 13,4-12,9 Ma Late Paleogene and Neogene lithostratgraphy 15,5 Ma 16,7-14,7 Ma 14,1-13,0 Ma 15 16,7 Ma 15,9-15,5 Ma
18 Fig. 16: General view of the Late Paleo- 19-16,4 Ma Extent of glauconitic Utsira Formation accordingAge Denmark toSouthern RundbergNorthern Møre/Vøring Sørvestsnag& EidvinVestbakken Spitsbergen (2005)δ O (‰) Early North Sea North Sea basins Basin Volcanic Central Climate Skade Fm Province Basin Events 20 Miocene 20,7 Ma Glauconitic Utsira Mb 012345 gene and Neogene lithostratigraphy in S N Geochronology of studied wells, boreholes and outcrops Pliocene the investigated areas modified after 24-23,9 Ma Molo (The Utsira Formation in dark red) Extent of the part of the Utsira Formation withGram source fromUtsira Kai the Sognefjorden area Rasmussen et al. (2008) and Rundberg & Hodde Odderup Nordland ? Nordland 25 Late 25,3 Ma Miocene 26-26,3 Ma 24,1-23,4 Ma WELL 15/12-3 NORTHERN Arnum Eidvin (2005). On the right hand side of Oligocene RINGKØB.- SE NORWEG.- NORTH-WESTERN CENTRAL WESTERN SVALBARD EAST Skade Molo Unnamed FYN HIGH DANISH BASIN NORWEGIAN-DANISH BASIN GRABEN SOUTHERN VIKING GRABEN NORTHERN NORTH SEA NORWEGIAN SEA CONTINENTAL SHELF NORWEGIAN SEA BARENTS SEA GREENLAND Bastrup 27,9 Ma 27,2-26,4 Ma Billund s Vade Fm 27,2-25,7 Ma SOGN N. VIKING MÅLØY TRØNDELAG TRØNDELAG UTGARD GJALLAR Vejle Fjord Lark Sarsbukta the diagram there is added some pale- GRABEN GRABEN TAMPEN AREA TERRACE PLATFORM PLATFORM NORDLAND RIDGE HIGH MØRE BASIN RIDGE Unnamed ? Investigated wells with Utsira Formation Formation Sea Nor. - Greenl. 29,2-30,3 Ma unit TROLL FRAM VEGA RIMFAKS VISUND 3532 AGAT TRØND. NORDL. ORMEN LANGE Branden Freja SLEIPNER FIELD SNORRE FIELD DRAUGEN FIELD Vade Molo ? 30 Early FIELD FIELD SOUTH FIELD FIELD DISCOVERY PLATF. RIDGE FIELD OFF SKORESBY SUND Oligocene Cenozoic oclimatic data including a global deep- RØD- HJØL- Dufa 32,7-31,5 Ma Ma DING LUND 2/ 11/ 9/ 2/ 15/ 15/ 15/ 16/ 16/ 24/ 25/ 25/ 25/ 30/ 30/ 31/ 35/ 35/ 29/ 34/ 34/ 34/ 34/ 34/ 34/ 34/ 34/ 35/ 36/ 6407/ 6407/ 6407/ 6507/ 6609/ 6508/ 6609/ 6610/ 6510/ 6610/ 6607/ 6305/ 6305/ 6404/ 49-23 6403/ 6704/ 7316/ FORL.- ODP- ? Oligocene HORDALAND GROUP Lithostrati- graphic units Lithostrati- graphic units Lithostrati- graphic units Lithostrati- graphic units Lithostrati- graphic units Lithostrati- graphic units Lithostrati- graphic Lithostrati- graphic units Lithostrati- graphic units Lithostrati- graphic units Lithostrati- graphic units Lithostrati- graphic units Chrono- stratigraphy (Berggren et al. 1995) Lithostrati- graphic units BORE. Lithostrati- graphic units BORE. Lithostrati- graphic units 2-2 10-1 Lithostrati- graphic units 12-1 Lithostrati- graphic units 4-C11 Lithostrati- graphic units 12-3 9-A-23 9-13 Lithostrati- graphic units 1-4 1-2 12-1 10-2 2-10 S 1-8 S 5-2 6-3 3-1 11-1 11-14S 3-1 10-17 7-2 8-1 8-3A 7-1 4-7 4-6 2-4 3-1 1-2 9-5 9-1 9-2 12-1 11-1 5-1 5-1 2-1 S 2-1 3-1 5-1 5-1 4-1 11-1 5-GB1 12-GB1 5-1 SUNDET 987 Hordaland sea oxygen curve, bottom-water paleo- HOLOCENE Solbakken Group
Wells where the Utsira Formation is not analysed/presentPaleogene Neogene 0 AND PLEI- Eocene Søvind Torsk temperatures in the world’s oceans and Eocene/ STOCENE Horda Grid Brygge Hiatus
NAUST NAUST 0° 2° 4° 6° 8° 10° Temperature (°C) periods with ice-sheets in the Antarctica OD 1205008/2 NORD. NORD. GROUP GROUP GR. GR. NAUST FORMATION FORMATION NORDL. Sand Clay and hemipelagic NORDLAND NORDLAND FORM. GROUP Partial or ephemeral LATE ice sheets and northern hemisphere (after Zachos et After Eidvin, Dybkjær, Piasecki and Rasmussen (in prep.) GROUP Not investigated wells Fig. 20: Post Eocene lithostratigraphy of the Norwegian North Sea including main results of the GROUP GROUP NORDL. NORDLAND NORDLAND Full scale and permanent
DEPTH (mRKB) DEPTH GAMMA LOG RAY UNIT: gAPI LITHOLOGY GROUPS LITHOSTRATIGRAPHIC FORMATION LITHOSTRATIGRAPHIC SERIES/SUBSERIES FORAMINIFERALBENTHIC ASSEMBLAGES PLANKTONIC FOSSIL ASSEMBLAGES PALEOBATHYMETRY FROM AGES Sr ISOTOPE (Ma) MOLLUSC TESTS FORAMINI- FROM AGES Sr ISOTOPE FERAL AND BOLBOFORMA (Ma) TESTS SAMPLES (meters) ice sheets al. 2001). Periods with deposition of IRD strontium isotope analyses based on fossil tests interpreted to be in situ (after Eidvin et al, work in Ma 900 DC PLIOCENE New IRD data from ODP Site 913
NEOGLOBOQUA. 5 EARLY (off East Greenland)
FORM. at ODP Site 913 (off East Greenland) are ATLANTICA (SIN.) 920 DC UTSIRA progress 2). ASSEMBLAGE OD 1212017 5 3,5+10,6 940 DC V - IIIA also indicated (Eldrett et al. 2007).OD 1212025 960 DC
LOWER 970 DC PLIOCENE 4,9+9,9 980 DC ? 1000 1000 DC ASSEMBLAGE PUNCTICULATA GLOBOROTALIA ASSEMBLAGE 1010 DC LATE Seismic
** ** FORMATION UTSIRA FORMATION UTSIRA 14,6+16,7 1020 DC PROPOSED POST-EOCENE STRATIGRAPHY OF THE units of MOLO FORMATION MOLO GRAM FORM. 1040 DC GROUP NORDLAND NORTHERN NORTH SEA Rundberg (DEX.) - References: ** 10 ØRN- 9,7+17,2 1060 DC HØJ & FORMAT.
UVIGERINA VENUSTA SAXONICA ?
10 UTSIRA FORMATION Age UPPER UTSIRA FORMATION UTSIRA If not stated otherwise all figures and text are according to: S N Eidvin UTSIRA FORMATION UTSIRA MIDDLE TO INNER MIDDLE NERITIC TO MIOCENE
1080 DC FORMATION UTSIRA Epoch Gr. Fm KAI FORMATION ACOSTAENSIS ASSEMBLAGE (Ma) (2005) KAI FORMATION 58° Viking Graben Frigg Area Viking Graben 62° ATLANTICA ATLANTICA Eidvin, T., Riis, F. & Rasmussen, E. S., work in progress. Oligocene to Lower Pliocene deposits of the Norwegian continental shelf, with correlation to the Norwegian Sea, Greenland, 1100 8,9+11,8 1100 DC NEOGLOBOQUADRINA NEOGLOBOQUADRINA 10,6 1110 DC Pleistoc. Peon Mb 10,7 10+10,9 1120 DC HODDE Svalbard, Denmark and their relation to the uplift of Fennoscandia. GROUP NORDL. FORMATION 1140 DC ? Tampen Spur Mb 1150 DC
Pliocene FORM. NAUST
NORDLAND GROUP 10,6 1160 DC Other references: Hiatus MIDDLE 9,0+10,7 1180 DC GROUP 5 MIOCENE Eidvin, T., 2009: A biostratigraphic, strontium isotopic and lithostratigraphic study of the upper part of Hordaland Group and lower part of Nordland Group in well 34/7-2, 34/7-12 15 NORDLAND 1200 9,3+11,3 1200 DC Glauconitic ODDERUP NORDLAND GROUP NORDLAND GROUP NORDLAND
FORMATION and 34/7-R-1 H from the Tordis Field in the Tampen area (northern North Sea). Available from the internet: http://www.npd.no/Global/Norsk/3%20-%20Publikasjoner/Forskning- RETICULATA Southern Utsira Northern Utsira BADENENSIS - BADENENSIS
ASSEMBLAGE Utsira Mb BOLBOFORMA BOLBOFORMA Late 12,7 1220 DC sartikler/Tordis-biostr-rapp.pdf Mb Mb LN-2 UVIGERINA PYGMEA LANGENFELDENSIS ASSEMBLAGE 1240 DC Miocene FORM. SKADE UTSIRA OUTER NERITIC 1250 DC Hiatus
MIDDLE MIOCENE Hiatus MOLO ASTERIGERINA 1260 DC FORM. Eidvin, T. & Rundberg, Y., 2001: Late Cainozoic stratigraphy of the Tampen area (Snorreand Visund fields) in the northern North Sea, with emphasis on the chronology of earlyNeo- 10 14,8 FORMATION GUERICHI GLOBIGERINA 1270 DC PRAEBUL- STAESCHEI LOIDES 1280 DC gene sands. Norsk Geologisk Tidsskrift, 81, 119–160. Available from the internet: http://www.npd.no/Global/Norsk/3%20-%20Publikasjoner/Forskningsartikler/Eidvin_and_Rund- ASSEMBLAGE ASSEMBLAGE 1290 DC 1300 DC Middle 1300 GLOBOROTA. berg_2001.pdf LN-1 UVIGERINA 2x17 1310 DC Eir Fm TENUIPUSTU- ZEALANDICA - Miocene NORDLAND GROUP GLOBIGERINA 1320 DC FORMATION ARNUM LATA CIPEROENSIS 20 Eidvin, T. & Rundberg, Y., 2007: Post-Eocene strata of the southern Viking Graben, northern North Sea; intergrated biostratigraphic, strontium isotopic and lithostratigraphic ASSEMBLAGE 1330 DC ASSEMBLAGE 1340 DC FORMATION SKADE 15 EARLY study. Norwegian Journal of Geology 87, 391-450. Available from the internet: http://www.geologi.no/data/f/0/11/37/2_2401_0/Eidvin_Rundberg_print.pdf 1360 DC
1370 DC BASTRUP Eidvin, T. & Øverland, J. A., 2009: Faulty geology halts project. Norwegian Continental Shelf, no. 2, 35-36. Available from the internet: http://www.npd.no/global/engelsk/3%20 1380 DC FORMATION SKADE FORMATION SKADE Early Skade Fm
HORDALAND GROUP HORDALAND -%20publications/norwegian%20continental%20shelf/pdf/10%20faulty%20geology.pdf 1400 1400 DC FORM. HOVED KLINTING- Miocene UH-4 1420 DC Eidvin, T., Dybkjær, K., Piasecki, S. & Rasmussen, E. S., work in progress 2: Strontium isotope stratigraphy based on analyses of mollusc tests from the Upper Oligocene-Miocene 20
BILLUND GROUP HORDALAND LOWER MIOCENE LOWER 1430 DC FORMAT. ASSEMBLAGE
1440 DC FORM. DIATOM SP. 4 SP. DIATOM VEJLEFJ. VEJLEFJ. succession in Denmark with correlation to the Norwegian continental shelf. ASSEMBLAGE LARIA SEMINUDA 1450 DC
UPPER BATHYAL BREJ- HORDALAND GROUP HORDALAND PLECTOFRONDICU- 1460 DC NING ANNECTINA 25 FORMAT. Eldrett, J. S, Harding, I. C., Wilson, P. A., Butler, E. and Roberts, A. P., 2007: Continental ice in Greenland during the Eocene and Oligocene. Nature 446, 176-179. HORDALAND GROUP HORDALAND LAND GROUP BIEDAI- 1480 DC HORDA- FORMAT. BREJNING UH-3 TURRILINA Gjeldvik, I. T., Eidvin, T. & Riis, F., 2011: Neogene Delta Systems In The North-Western North Sea. Poster shown at Sustainable Earth Sciences Conference & Exibition, Valencia, BRAN- Late
SP. 3 25 HORDALAND GROUP 1500 UPPER ALSATICA 1500 DC DEN DIATOM LATE
OLIGOCENE 26,8 ASSEMBLAGE ASSEMBL. CLAY Spain, 8-10 November 2011, Available from the internet: http://www.npd.no/Global/Norsk/3-Publikasjoner/Presentasjoner/Plakat.pdf Oligocene 0 40 80 120 1520 DC Gregersen, U. & Johannessen, P. N., 2007: Distribution of the Neogene Utsira Sand and Hutton Sand, and the succeeding deposits in the Viking Graben area, North Sea. Marine Ull Fm HORDALAND GROUP HORDALAND LARK FORMATION UH-2 Sea floor = 111 meters below rig floor (mRKB) GROUP HORDALAND and Petroleum Geology 24, 591-606. BRYGGE FORMATION BRYGGE FORMATION BRYGGE DC = Ditch cuttings GROUP HORDALAND 30 Early gAPI = American Petroleum Institute gamma ray units FORMATION BRYGGE Isaksen, D. & Tonstad, K., 1989: A revised Cretaceous and Tertiary lithostratigraphic HORDALAND GROUP HORDALAND VADE FORMATION VADE SOTBAKKEN GROUP Oligocene GROUP HORDALAND = Ice rafted pebbels 30 OLIGOCENE nomenclature for the Norwegian North Sea. NPD Bulletin No. 5, 59 pp. = Abundant molluscs or mollusc fragments Fig. 11 UH-1 SARSBUKTA ** = Reworked FORMATION NPD, 2011: CO2 Atlas, Norwegian North Sea. Available from the internet: http://www.npd.no/Global/Norsk/3-Publikasjoner/Rapporter/PDF/CO2-ATLAS-lav.pdf
= Limestone OD 1204018 EARLY Eocene/ HORDALAND GROUP HORDALAND Rasmussen, E. S., Heilmann-Clausen, Waagstein, R. & Eidvin, T., 2008: The Tertiary of Norden. Episones, Vol. 21, No. 1, 66-72. Available from the internet: http://www.npd.no/ Hiatus FM GROUP HIATUS DOWNHIATUS LOWER - MIDDLE TO EOCENE DOWNHIATUS ?LOWER TO OLIGOCENE DOWNHIATUS MIDDLE TO EOCENE HIATUS DOWNHIATUS LOWER - MIDDLE TO EOCENE HORDA HIATUS DOWN TO LOWER - MIDDLE EOCENE Global/Norsk/3%20-%20Publikasjoner/Forskningsartikler/Rasmussen_et_al_2007.pdf TO OD 1205006/1 33 HORDALAND MOLO FM Rundberg, Y. & Eidvin, T., 2005: Controls on depositional history and architecture of the Oligocene-Miocene succession, northern North Sea Basin. In B.T.G. Wandaas et al. (eds.): OD 1209021 Fig. 21: Proposed lithostratigraphic subdivision of post-Eocene strata in the northern North Sea. HIATUS DOWN HIATUS PALEOC. - EOC. Onshore-Offshore Relationships on the North Atlantic Margin. NPF Special Publication 12, 207-239. Colour key: Sediment present Hiatus Not sampled or analysed Cored sections/ Sections with a large number of HIATUS DOWN TO MIDDLE EOCENE Zachos, J., Pagani, M, Sloan, L., Thomas, E. & Billups, K., 2001: Trends, Rhythms, and Aberrations in Global Climate 65 Ma to Present. Science 292, 686-693. Mb = member, Gr = group, Fm = Formation. outcrops sidewall cores Utsira Formation
Fig.Fig. 12. 12: Geochronology Geochronology of studied of all studiedwells, boreholes wells and including outcrops. Verticalthe 16 axis wells is in Ma.with the Utsira Formation.
OD 1209012/3