DOCSLIB.ORG

Biostratigraphic Chart of the Gulf of Mexico Offshore Region, Jurassic to Quaternary

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Biostratigraphic Chart of the Gulf of Mexico Offshore Region, Jurassic to Quaternary United States Department of Interior, Bureau of Ocean Energy Management BOEM Biostratigraphic Chart of the Gulf of Mexico Offshore Region, Jurassic to Quaternary Recent through Oligocene Eocene through Jurassic Time CHRONOSTRATIGRAPHY BIOSTRATIGRAPHY Time CHRONOSTRATIGRAPHY BIOSTRATIGRAPHY BOEM BOEM (mya) BOEM BOEM (mya) BOEM Planktic & benthic foraminiferal, ostracod (O), BOEM Planktic & benthic foraminiferal Calcareous nannoplanktic CHRONO Calcareous nannoplanktic CHRONO System Subsystem Series Stage Strat Strat System Subsystem Series Stage Strat radiolarian and dinoflagellate (D) regional and Strat (not to regional and local markers regional and local markers ZONE (not to regional and local markers ZONE scale) Code Code scale) Code local markers Code Holocene Q10 Globorotalia inflata 33.89 J3 Hantkenina alabamensis —0.0118— J4 Turborotalia cerroazulensis cocoaensis NJ03 Discoaster saipanensis, Upper Tarantian P PLU J6 Textularia hockleyensis NJ01 Chiasmolithus consuetus ——0.126—— r Q1 Globorotalia flexuosa acme NQ35 Emiliania huxleyi (base of acme) i J14 Subbotina linaperta NJ00 Discoaster barbadiensis U NQ01 Gephyrocapsa oceanica flood a J7 Textularia dibollensis p NQ55 Gephyrocapsa parallela b J12 Globigerinatheka tropicalis NJ07 Cribrocentrum reticulatum Middle Ionian p NQ16 Pseudoemiliania lacunosa "A" PLM o J10 Turborotalia pomeroli EU Q e n 11 Truncorotalia truncatulinoides coil change, right-to-left NQI Pseudoemiliania lacunosa "B" r J8 Camerina moodybranchensis Q5 Trimosina "A" NQ59 Gephyrocapsa caribbeanica increase i J11 Globigerinatheka semiinvoluta ——0.78—— u 26 Stilostomella antillea NQ36 Pseudoemiliania ovata a J13 Globigerinatheka mexicana NCD Micrantholithus procerus P NQ38 Reticulofenestra asanoi n J15 Globigerinatheka barri NJ10 Micrantholithus altus C a Q0 Trimosina "A" acme NQ39 Pseudoemiliania pacifica C11 Nonionella cockfieldensis NJ02 Sphenolithus obtusus l a —37.80— 17 Sphaeroidinella dehiscens acme "A" NQE Pseudoemiliania lacunosa "C" acme C27 Acarinina spinuloinflata NC00 Chiasmolithus grandis e l t NQ56 Gephyrocapsa aperta acme C0 Discorbis yeguaensis NCG Campylosphaera dela a i 16 Angulogerina magna NQ44 Scyphosphaera pulcherima, C1 Eponides yeguaensis b e s 27 Globorotalia incisa NQV Gephyrocapsa caribbeanica (large) C3 Nodosaria mexicana r t i Q6 Hyalinea balthica / Trimosina "B" NQ40 Reticulofenestra asanoi acme B 96 Truncorotaloides rohri r o a 19 Globorotalia tosaensis tosaensis NQT Helicosphaera sellii a C4 Ceratobulimina eximia c L n 36 Sphaeroidinella dehiscens acme "B" NQ51 Lithostromation perdurum r C2 Eponides guayabalensis o Q7 Angulogerina "B" NQW Calcidiscus macintyrei t C14 Truncorotaloides topilensis NC10 Sphenolithus spiniger n e w 99 Uvigerina hispida o C15 Clavulinoides guayabalensis ——1.81—— PLL n e P7 Globorotalia crassula acme, NP41 Discoaster brouweri, n C28 Hantkenina dumblei NC02 Chiasmolithus solitus a M e r P11 Globorotalia praehirsuta NP50 Calcidiscus macintyrei increase i C16 Orbulinoides beckmanni NC11 Sphenolithus furcatolithoides G i P3 Cristellaria "S" a C5 Operculinoides sabinensis r e d 39 Menardella exilis NP42 Discoaster brouweri "A" n C12 Morozovella lehneri l d EM 21 Menardella menardii coil change, left-to-right C13 Acarinina bullbrooki a l y P12 Menardella pertenuis NP43 Discoaster pentaradiatus 024 Radiolarian acme A s E e P8 Lenticulina 1 C17 Turborotalia frontosa NCK Sphenolithus radians i o 20 Menardella miocenica C29 Acarinina pentacamerata NC13 Sphenolithus furcatolithoides increase a —41.20— c 23 Bolivina imporcata / "P" NP44 Discoaster surculus C30 Hantkenina nuttalli n e L 22 Textularia crassisepta / "P" u C9 Igorina broedermanni NC14 Discoaster wemmelensis 40 Ceratobulimina pacifica NP45 Discoaster asymmetricus n t C31 Globigerinoides higginsi NC15 Blackites gladius ——2.59—— P 24 Cassidulina laevigata carinata acme / "L" NP46 Cycloperfolithus carlae T e e C6 Cyclammina caneriverensis NC16 Nannotetrina fulgens i 41 Haplophragmoides emaciatum t C10 Morozovella aragonensis a 25 Saracenaria "H" NP47 Discoaster tamalis i NC05 Chiasmolithus gigas U c 43 Menardella multicamerata a C32 Morozovella caucasica NC06 Discoaster sublodoensis p e e 101 Siphogenerina lamellata acme P n C8 Haplocytheridea stenzeli (O) NC08 Discoaster lodoensis p —47.84— n P9 Dentoglobigerina altispira = Valvulineria "H" PU C19 Acarinina soldadoensis NXQ Discoaster kuepperi e z a r 45 Sphaeroidinellopsis seminulina r C20 Morozovella quetra P i 32 Arenaceous fauna l C21 Acarinina angulosa NXR Toweius magnicrassus l a 44 Cibicides grosseperforatus 025 Radiolarian acme B NC07 Rhabdosphaera inflata n P1 Textularia 1 NP01 Sphenolithus abies e NXN Chiasmolithus californicus —-3.58—- i t o P5 Buccella (Eponides) hannai acme o NWA Toweius crassus 98 Cibicides marsi NP02 Reticulofenestra pseudoumbilica C22 Morozovella rex / subbotinae NXP Tribrachiatus orthostylus c P16 Globorotalia plesiotumida g Y C23 Morozovella formosa formosa Z i e 30 Globorotalia margaritae NP40 Pseudosphenolithus abies "B" acme p C24 Acarinina wilcoxensis NXS Toweius callosus a e L n L 46 Globigerina druryi / bolli r X16 Morozovella lensiformis NXT Toweius pertusus n o o 31 Globigerina nepenthes n e NX02 Discoaster multiradiatus e c a w w P13 Uvigerina rustica NPP Sphenolithus abies "B" s X4 Cytheridea sabinensis (O) NXB Tribrachiatus contortus EL l PL e e e P2 Buliminella 1 NP08 Amaurolithus tricorniculatus i X17 Planorotalites chapmani NX04 Toweius eminens i r r 34 Siphotextularia jugosa / "J" a X18 Morozovella aequa NXU Tribrachiatus bramlettei a r n n 35 Sigmoilina "P" / cf. schlumbergeri NPY Dictyococcites antarcticus X19 Morozovella edgari NXV Prinsius bisulcus P10 Sphaeroidinellopsis multilobata X20 Subbotina velascoensis NXW Fasciculithus involutus 37 Globigerinoides mitra NPA Ceratolithus acutus y X21 Rzehakina epigona NXX Discoaster mahmoudi P14 Globorotalia plesiotumida acme NP26 Discoaster quintatus C25 Morozovella acuta NX03 Chiasmolithus bidens —-5.33—- R1 Textularia 6 026 Radiolarian acme C NXZ Cruciplacolithus frequens R15 Textularia "X" X3 Morozovella velascoensis NXY Prinsius martinii 42 Bigenerina irregularis / 6 X6 Discorbis washburni NX06 Ellipsolithus distichus 48 Menardella menardii coil change, right-to-left NRW Discoaster quinqueramus X22 Apectodinium homomorphum (D) acme /PETM NX05 Fasciculithus tympaniformis M —55.96— e 47 Globorotalia juanai NR30 Discoaster quinqueramus acme T X23 Bathysiphon spp increase NX10 Ericsonia robusta s R14 Globorotalia primitiva NRE Discoaster berggrenii h NX11 Heliolithus cantabriae s R22 Sphaeroidinellopsis subdehiscens NRY Reticulofenestra rotaria a X8 Planorotalites pseudomenardii NXA Heliolithus riedelii i R2 Robulus E, n X24 Acarinina mckannai n R16 Textularia tatumi NRX Discoaster berggrenii "A" e NX12 Fasciculithus billii i R17 Bolivina denticulata U t X7 Morozovella angulata NX13 Fasciculithus ullii a 59 Reophax davepopei, p i NX14 Fasciculithus janii n 60 Sphaeroidinellopsis disjuncta p a X25 Trifarina herberti NX07 Heliolithus kleinpelli LU 49 Siphogenerina lamellata increase P e n X26 Subbotina triloculinoides NX15 Prinsius martinii increase —59.24— R4 Bigenerina floridana / "A" NR12 Discoaster berggrenii "C" MUU a r T9 Gyroidina aeris NXC Discoaster diastypus —-7.25—- 54 Globorotalia acostaensis coiling change, right-to-left l X9 Igorina pusilla pusilla NXD Chiasmolithus danicus NR08 Discoaster neohamatus, T10 Gyroidina brevis NT02 Neochiastozygus saepes e Selandian NR04 Discoaster calcaris T11 Morozovella conicotruncana NXE Cruciplacolithus tenuis o R24 Globigerina nepenthes acme A X10 Planorotalites compressa NT03 Cruciplacolithus edwardsii 55 Planulina renzi c NT04 Fasciculithus chowii —61.61— U R23 Sphaeroidinellopsis kochi NR02 Discoaster loeblichii e X11 Vaginulina longiforma, p R5 Cristellaria "K" NR21 Discoaster bellus n T5 Vaginulina midwayensis Nt05 Neochiastozygus eosaepes p R13 Uvigerina carapitana NR06 Catinaster mexicanus e X12 Parasubbotina pseudobulloides e R6 Amphistegina "E" L X13 Praemurica uncinata r R25 Globigerina nepenthes acme B NR07 Minylithus convallis o T3 Praemurica inconstans NT06 Hornibrookina edwardsii R7 Cyclammina 3 NRZ Reticulofenestra gelida acme w Danian T7 Praemurica trinidadensis NT07 Cyclagelosphaera alta T LL R12 Melonis pompilioides increase NR01 Discoaster prepentaradiatus e T8 Globocontusa daubjergensis —-8.90—- o R19 Cibicides trincherasensis, NR16 Discoaster prepentaradiatus increase r T6 Robulus pseudocostata N r 57 Globorotalia lenguaensis, T13 Parvularugoglobigerina fringa t 65 Bolivina thalmanni T14 Discorbis newmanae NT08 Neobiscutum parvulum e o R8 Discorbis 12 NR09 Discoaster bollii 97 Parvularugoglobigerina eugubina NT09 Neobiscutum romeinii n —66.04— o i 61 Globoquadrina dehiscens M G10 Contusotruncana contusa NK07 Micula decussata, a 62 Cibicides crebbsi NR00 Discoaster hamatus a NK02 Watznaueria barnesae, g n 53 Robulus 15 NRV Catinaster calyculus a G0 Abathomphalus mayaroensis NK00 Micula prinsii R9 Textularia "L" NRA Catinaster coalitus s G1 Gansserina gansseri 56 Cibicides inflata NRC Discoaster exilis t G28 Globotruncana linneiana NK03 Nephrolithus frequens FAD e MLU r R10 Cibicides carstensi, NR33 Discoaster exilis increase G29 Rugoglobigerina pennyi i n R20 Bigenerina 2 c G11 Globotruncana lapparenti, 69 Paragloborotalia mayeri h G2 Rosita fornicata e R18 Globorotalia siakensis NR25 Helicosphaera walbersdorfensis t G30 Pyramidina szajnoche NK04 Reinhardtites levis R11 Uvigerina 3, NRG Coccolithus miopelagicus i G3 Globotruncana ventricosa NK06 Tranolithus orionatus M R21 Cibicides
Load more

Recommended publications
  • Tetrapod Biostratigraphy and Biochronology of the Triassic–Jurassic Transition on the Southern Colorado Plateau, USA
    Palaeogeography, Palaeoclimatology, Palaeoecology 244 (2007) 242–256 www.elsevier.com/locate/palaeo Tetrapod biostratigraphy and biochronology of the Triassic–Jurassic transition on the southern Colorado Plateau, USA Spencer G. Lucas a,⁎, Lawrence H. Tanner b a New Mexico Museum of Natural History, 1801 Mountain Rd. N.W., Albuquerque, NM 87104-1375, USA b Department of Biology, Le Moyne College, 1419 Salt Springs Road, Syracuse, NY 13214, USA Received 15 March 2006; accepted 20 June 2006 Abstract Nonmarine fluvial, eolian and lacustrine strata of the Chinle and Glen Canyon groups on the southern Colorado Plateau preserve tetrapod body fossils and footprints that are one of the world's most extensive tetrapod fossil records across the Triassic– Jurassic boundary. We organize these tetrapod fossils into five, time-successive biostratigraphic assemblages (in ascending order, Owl Rock, Rock Point, Dinosaur Canyon, Whitmore Point and Kayenta) that we assign to the (ascending order) Revueltian, Apachean, Wassonian and Dawan land-vertebrate faunachrons (LVF). In doing so, we redefine the Wassonian and the Dawan LVFs. The Apachean–Wassonian boundary approximates the Triassic–Jurassic boundary. This tetrapod biostratigraphy and biochronology of the Triassic–Jurassic transition on the southern Colorado Plateau confirms that crurotarsan extinction closely corresponds to the end of the Triassic, and that a dramatic increase in dinosaur diversity, abundance and body size preceded the end of the Triassic. © 2006 Elsevier B.V. All rights reserved. Keywords: Triassic–Jurassic boundary; Colorado Plateau; Chinle Group; Glen Canyon Group; Tetrapod 1. Introduction 190 Ma. On the southern Colorado Plateau, the Triassic– Jurassic transition was a time of significant changes in the The Four Corners (common boundary of Utah, composition of the terrestrial vertebrate (tetrapod) fauna.
    [Show full text]
  • 14. Neogene and Quaternary Calcareous Nannofossil Biostratigraphy of the Walvis Ridge1
    14. NEOGENE AND QUATERNARY CALCAREOUS NANNOFOSSIL BIOSTRATIGRAPHY OF THE WALVIS RIDGE1 Ming-Jung Jiang, Robertson Research (U.S.) Inc., Houston, Texas and Stefan Gartner, Department of Oceanography, Texas A&M University, College Station, Texas ABSTRACT During DSDP Leg 74 in the South Atlantic, 11 holes were drilled at 5 sites (525-529) on the eastern end of Walvis Ridge. The sediments recovered range in age from late Campanian or early Maestrichtian to Holocene. This chapter deals only with the Neogene to Holocene interval. The calcareous nannofossils over this interval have been corroded as well as overgrown, but a precise biostratigraphy is possible at all sites because most of the key index species are present. INTRODUCTION CALCAREOUS NANNOFOSSIL ZONATION During DSDP Leg 74, 11 holes were drilled at 5 sites Martini's standard Tertiary and Quaternary zonation (525-529) on Walvis Ridge in the South Atlantic near (1971), which is widely used elsewhere, was the starting South Africa (Fig. 1). Sediments ranging in age from basis for the zonation described here. Because of the late Campanian or early Maestrichtian to Holocene scarcity or apparent lack of some of Martini's index fos- were recovered. This chapter deals with the calcareous sils, possibly owing to environmental exclusion of the nannofossils found in the Neogene to Holocene sedi- parent organism or to poor preservation, other species ment from these five sites. The calcareous nannofossils were selected to determine zones. Deviations from Mar- from the Paleogene and the Upper Cretaceous are docu- tinis zonation, necessary for the studied area, are dis- mented by Hélène Manivit in this same volume.
    [Show full text]
  • 33. Neogene and Quaternary Calcareous Nannofossils from the Blake Ridge, Sites 994, 995, and 9971
    Paull, C.K., Matsumoto, R., Wallace, P.J., and Dillon, W.P. (Eds.), 2000 Proceedings of the Ocean Drilling Program, Scientific Results, Vol. 164 33. NEOGENE AND QUATERNARY CALCAREOUS NANNOFOSSILS FROM THE BLAKE RIDGE, SITES 994, 995, AND 9971 Hisatake Okada2 ABSTRACT Twenty routinely used nannofossil datums in the late Neogene and Quaternary were identified at three Blake Ridge sites drilled during Leg 164. The quantitative investigation of the nannofossil assemblages in 236 samples selected from Hole 994C provide new biostratigraphic and paleoceanographic information. Although mostly overlooked previously, Umbilicosphaera aequiscutum is an abundant component of the late Neogene flora, and its last occurrence at ~2.3 Ma is a useful new biostrati- graphic event. Small Gephyrocapsa evolved within the upper part of Subzone CN11a (~4.3 Ma), and after an initial acme, it temporarily disappeared for 400 k.y., between 2.9 and 2.5 Ma. Medium-sized Gephyrocapsa evolved in the latest Pliocene ~2.2 Ma), and after two short temporary disappearances, common specimens occurred continuously just above the Pliocene/Pleis- tocene boundary. The base of Subzone CN13b should be recognized as the beginning of the continuous occurrence of medium- sized (>4 µm) Gephyrocapsa. Stratigraphic variation in abundance of the very small placoliths and Florisphaera profunda alter- nated, indicating potential of the former as a proxy for the paleoproductivity. At this site, it is likely that upwelling took place during three time periods in the late Neogene (6.0–4.6 Ma, 2.3–2.1 Ma, and 2.0–1.8 Ma) and also in the early Pleistocene (1.4– 0.9 Ma).
    [Show full text]
  • Biostratigraphy and Evolution of Miocene Discoaster Spp. from IODP Site U1338 in the Equatorial Pacific Ocean
    Research article Journal of Micropalaeontology Published online December 7, 2016 https://doi.org/10.1144/jmpaleo2015-034 | Vol. 36 | 2017 | pp. 137–152 Biostratigraphy and evolution of Miocene Discoaster spp. from IODP Site U1338 in the equatorial Pacific Ocean Marina Ciummelli1*, Isabella Raffi2 & Jan Backman3 1 PetroStrat Ltd, Tan-y-Graig, Parc Caer Seion, Conwy LL32 8FA, UK 2 Dipartimento di Ingegneria e Geologia, Università ‘G. d’Annunzio’ di Chieti-Pescara, I-66013 Chieti Scalo, Italy 3 Department of Geological Sciences, Stockholm University, SE-106 91 Stockholm, Sweden * Correspondence: [email protected] Abstract: Assemblages of upper lower through upper Miocene Discoaster spp. have been quantified from Integrated Ocean Drilling Program (IODP) Site U1338 in the eastern equatorial Pacific Ocean. These assemblages can be grouped into five broad morphological categories: six-rayed with bifurcated ray tips, six-rayed with large central areas, six-rayed with pointed ray tips, five-rayed with bifurcated ray tips and five-rayed with pointed ray tips. Discoaster deflandrei dominates the assemblages prior to 15.8 Ma. The decline in abundance of D. deflandrei close to the early–middle Miocene boundary occurs together with the evolution of the D. variabilis group, including D. signus and D. exilis. Six-rayed discoasters having large central areas become a prominent member of the assemblages for a 400 ka interval in the late middle Miocene. Five- and six-rayed forms having pointed tips become prominent in the early late Miocene and show a strong antiphasing relationship with the D. variabilis group. Discoaster bellus completely dominates the Discoaster assemblages for a 400 ka interval in the middle late Miocene.
    [Show full text]
  • The Planktonic Foraminifera of the Jurassic. Part III: Annotated Historical Review and References
    Swiss J Palaeontol (2017) 136:273–285 DOI 10.1007/s13358-017-0130-0 The planktonic foraminifera of the Jurassic. Part III: annotated historical review and references Felix M. Gradstein1,2 Received: 21 February 2017 / Accepted: 3 April 2017 / Published online: 7 July 2017 Ó Akademie der Naturwissenschaften Schweiz (SCNAT) 2017 Abstract Over 70 publications on Jurassic planktonic With few exceptions, Jurassic planktonic foraminifera foraminifera, particularly by East and West European and publications based on thin-sections are not covered in this Canadian micropalaeontologists, are summarized and review. Emphasis is only on thin-section studies that had briefly annotated. It provides an annotated historic over- impact on our understanding of Jurassic planktonic for- view for this poorly understood group of microfossils, aminifera. By the same token, microfossil casts do not going back to 1881 when Haeusler described Globigerina allow study of the taxonomically important wall structure helvetojurassica from the Birmenstorfer Schichten of and sculpture; reference to such studies is limited to few of Oxfordian age in Canton Aargau, Switzerland. historic interest. The first four, presumably planktonic foraminiferal spe- Keywords Jurassic Á Planktonic foraminifera Á Annotated cies from Jurassic strata, were described in the second half of historical review 1881–2015 the nineteenth century: Globigerina liasina from the Middle Lias of France (Terquem and Berthelin 1875), G. helveto- jurassica from the Early Oxfordian of Switzerland (Haeusler Annotated historical overview 1881, 1890) and G. oolithica and G. lobata from the Bajocian of France (Terquem 1883). Some descriptions were from Jurassic planktonic foraminifera have been studied since the internal moulds. It was not until 1958 (see below) that more second half of the nineteen’s century, but it was not until after attention was focused on the occurrences of early planktonic the Second World War that micropalaeontological studies foraminifera, with emphasis on free specimens.
    [Show full text]
  • Quaternary Calcareous Nannofossil Datums and Biochronology in the North Atlantic Ocean, IODP Site U13081 Tokiyuki Sato,2 Shun Chiyonobu,3 and David A
    Channell, J.E.T., Kanamatsu, T., Sato, T., Stein, R., Alvarez Zarikian, C.A., Malone, M.J., and the Expedition 303/306 Scientists Proceedings of the Integrated Ocean Drilling Program, Volume 303/306 Data report: Quaternary calcareous nannofossil datums and biochronology in the North Atlantic Ocean, IODP Site U13081 Tokiyuki Sato,2 Shun Chiyonobu,3 and David A. Hodell4 Chapter contents Abstract Abstract . 1 We studied high-resolution Quaternary calcareous nannofossil Introduction . 1 biostratigraphy to clarify the relationship between nannofossil events and oxygen isotope stratigraphy using the continuous sed- Samples and methods. 1 iment sequence from Integrated Ocean Drilling Program Site Results . 2 U1308 in the North Atlantic Ocean. Results indicate that some Remarks on stratigraphic position of datums . 2 nannofossil events found in the section, such as the last occur- Conclusion . 3 rences of Reticulofenestra asanoi and Gephyrocapsa spp. (large), are Acknowledgments. 3 located in a different stratigraphic position compared to previous References . 3 studies. We also clarify the critical stratigraphic positions of both Figures . 5 the first occurrence of Emiliania huxleyi and the last occurrence of Table . 9 Pseudoemiliania lacunosa, which occur just below the highest peaks of each marine isotope Stage 8 and 12. Introduction Quaternary calcareous nannofossil datums and their chronostrati- graphic framework have been discussed over the last 20 y mainly based on their correlation to magnetostratigraphy (Raffi and Rio, 1979; Rio, 1982; Takayama and Sato, 1987) or to oxygen isotope stages (Thierstein et al., 1977; Wei, 1993; Raffi et al., 1993; Raffi, 2002). These studies indicate that Quaternary nannofossil datums show a small diachroneity between different latitudes.
    [Show full text]
  • Applications of Calcareous Nannofossils and Stable Isotopes To
    Florida State University Libraries Electronic Theses, Treatises and Dissertations The Graduate School 2007 Applications of Calcareous Nannofossils and Stable Isotopes to Cenozoic Paleoceanography: Examples from the Eastern Equatorial Pacific, Western Equatorial Atlantic and Southern Indian Oceans Shijun Jiang Follow this and additional works at the FSU Digital Library. For more information, please contact [email protected] THE FLORIDA STATE UNIVERSITY COLLEGE OF ARTS AND SCIENCES APPLICATIONS OF CALCAREOUS NANNOFOSSILS AND STABLE ISOTOPES TO CENOZOIC PALEOCEANOGRAPHY: EXAMPLES FROM THE EASTERN EQUATORIAL PACIFIC, WESTERN EQUATORIAL ATLANTIC AND SOUTHERN INDIAN OCEANS By SHIJUN JIANG A dissertation submitted to the Department of Geological Sciences in partial fulfillment of the requirements for the degree of Doctor of Philosophy Degree Awarded: Fall Semester, 2007 The members of the Committee approve the Dissertation of Shijun Jiang defended on July 13, 2007. ____________________________________ Sherwood W. Wise, Jr. Professor Directing Dissertation ____________________________________ Richard L. Iverson Outside Committee Member ____________________________________ Anthony J. Arnold Committee Member ____________________________________ Joseph F. Donoghue Committee Member ____________________________________ Yang Wang Committee Member The Office of Graduate Studies has verified and approved the above named committee members. ii To Shuiqing and Jenny iii ACKNOWLEDGEMENTS First of all, I would like to thank my mentor Dr. Sherwood W. Wise, Jr., who constantly encouraged and supported me with his enthusiasm, reliance, guidance and, most of all, patience throughout my Ph.D adventure. He also opened a door into my knowledge of the paleo world, generously shared his time and his wealth of knowledge, patiently guided me through a western educational system totally different from my own background, and has successfully fostered my interest and enthusiasm in teaching.
    [Show full text]
  • The Gelasian Stage (Upper Pliocene): a New Unit of the Global Standard Chronostratigraphic Scale
    82 by D. Rio1, R. Sprovieri2, D. Castradori3, and E. Di Stefano2 The Gelasian Stage (Upper Pliocene): A new unit of the global standard chronostratigraphic scale 1 Department of Geology, Paleontology and Geophysics , University of Padova, Italy 2 Department of Geology and Geodesy, University of Palermo, Italy 3 AGIP, Laboratori Bolgiano, via Maritano 26, 20097 San Donato M., Italy The Gelasian has been formally accepted as third (and Of course, this consideration alone does not imply that a new uppermost) subdivision of the Pliocene Series, thus rep- stage should be defined to represent the discovered gap. However, the top of the Piacenzian stratotype falls in a critical point of the evo- resenting the Upper Pliocene. The Global Standard lution of Earth climatic system (i.e. close to the final build-up of the Stratotype-section and Point for the Gelasian is located Northern Hemisphere Glaciation), which is characterized by plenty in the Monte S. Nicola section (near Gela, Sicily, Italy). of signals (magnetostratigraphic, biostratigraphic, etc; see further on) with a worldwide correlation potential. Therefore, Rio et al. (1991, 1994) argued against the practice of extending the Piacenzian Stage up to the Pliocene-Pleistocene boundary and proposed the Introduction introduction of a new stage (initially “unnamed” in Rio et al., 1991), the Gelasian, in the Global Standard Chronostratigraphic Scale. This short report announces the formal ratification of the Gelasian Stage as the uppermost subdivision of the Pliocene Series, which is now subdivided into three stages (Lower, Middle, and Upper). Fur- The Gelasian Stage thermore, the Global Standard Stratotype-section and Point (GSSP) of the Gelasian is briefly presented and discussed.
    [Show full text]
  • Planktonic Foraminifera) from the Middle- Upper Eocene of Jabal Hafit, United Arab Emirates
    Open access e-Journal Earth Science India eISSN: 0974 – 8350 Vol. 11 (II), April, 2018, pp. 122 - 132 http://www.earthscienceindia.info/ Hantkeninidae (Planktonic Foraminifera) from the Middle- Upper Eocene of Jabal Hafit, United Arab Emirates Haidar Salim Anan Gaza P. O. Box 1126, Palestine Email: [email protected] ABSTRACT Six species of the planktonic foraminiferal Family Hantkeninidae belonging to the genera namely Cribrohantkenina and Hantkenina are recorded and described from the Middle- and Upper Eocene succession of Jabal Hafit, Al Ain area, United Arab Emirates. The species include Cribrohantkenina inflata, Hantkenina alabamensis, H. compressa, H. australis, H. liebusi and H. primitiva. The three species of Hantkenina named last are recorded for the first time from the UAE. Keywords: Middle Eocene, Upper Eocene, Hantkeninidae species, United Arab Emirates INTRODUCTION The species of the genera Cribrohantkenina and Hantkenina have a worldwide distribution encircling low and mid-latitudes. The appearance of the genus Hantkenina at 49 Ma corresponds with the Early/Middle Eocene boundary, and their extinction at 33.7 Ma denotes the Eocene/Oligocene boundary, while the genus Cribrohantkenina appears only at the Late Eocene (36. 4 Ma-34. 3 Ma) and its extinction denotes the Eocene/Oligocene boundary. Pearson (1993) noted that the genus Hantkenina have a rounded periphery and more globose chambers (e.g. H. alabamensis) and sometimes areal apertures on the chamber face around the primer aperture (=Cribrohantkenina). Coxall et al. (2003); Coxall and Pearson (2006); and Rögl and Egger (2010) noted that the genus Hantkenina evolved gradually from the genus Clavigerinella in the earliest Middle Eocene, contrary to the long- held view that it is related to the genus Pseudohastigerina evolved from Globanomalina luxorensis (Nakkady) in the earliest Early Eocene (base of Zone E2) by the development of a symmetrical umbilical aperture and slightly asymmetrical to fully planispiral test as are the result of changes in the timing of the development processes.
    [Show full text]
  • Integrated Stratigraphy and Astronomical Calibration of the Serravallian=Tortonian Boundary Section at Monte Gibliscemi (Sicily, Italy)
    ELSEVIER Marine Micropaleontology 38 (2000) 181±211 www.elsevier.com/locate/marmicro Integrated stratigraphy and astronomical calibration of the Serravallian=Tortonian boundary section at Monte Gibliscemi (Sicily, Italy) F.J. Hilgen a,Ł, W. Krijgsman b,I.Raf®c,E.Turcoa, W.J. Zachariasse a a Department of Geology, Utrecht University, Budapestlaan 4, 3584 CD Utrecht, The Netherlands b Paleomagnetic Laboratory, Fort Hoofddijk, Budapestlaan 17, 3584 CD Utrecht, The Netherlands c Dip. di Scienze della Terra, Univ. G. D'Annunzio, via dei Vestini 31, 66013 Chieti Scalo, Italy Received 12 May 1999; revised version received 20 December 1999; accepted 26 December 1999 Abstract Results are presented of an integrated stratigraphic (calcareous plankton biostratigraphy, cyclostratigraphy and magne- tostratigraphy) study of the Serravallian=Tortonian (S=T) boundary section of Monte Gibliscemi (Sicily, Italy). Astronomi- cal calibration of the sedimentary cycles provides absolute ages for calcareous plankton bio-events in the interval between 9.8 and 12.1 Ma. The ®rst occurrence (FO) of Neogloboquadrina acostaensis, usually taken to delimit the S=T boundary, is dated astronomically at 11.781 Ma, pre-dating the migratory arrival of the species at low latitudes in the Atlantic by almost 2 million years. In contrast to delayed low-latitude arrival of N. acostaensis, Paragloborotalia mayeri shows a delayed low-latitude extinction of slightly more than 0.7 million years with respect to the Mediterranean (last occurrence (LO) at 10.49 Ma at Ceara Rise; LO at 11.205 Ma in the Mediterranean). The Discoaster hamatus FO, dated at 10.150 Ma, is clearly delayed with respect to the open ocean.
    [Show full text]
  • Origin and Morphology of the Eocene Planktonic Foraminifer Hantkenina
    Journal of Foraminiferal Research, v. 33, no. 3, p. 237—261, July 2003 ORIGIN AND MORPHOLOGY OF THE EOCENE PLANKTONIC FORAMINIFER HANTKENINA HELEN K. COXALL,1 BRIAN T. HUBER,2 AND PAUL N. PEARSON3 ABSTRACT tion, in Pearson, 1993), intimating that the evolution of Hantkenina involved gradual morphological transition. Due Study of the origin and early evolution of the tubu- to the scarcity of Hantkenina near its first appearance level lospine-bearing planktonic foraminiferal genus Hant- and a shortage of suitable stratigraphic records of appropri- kenina reveals that it evolved gradually from the clavate ate age, these assertions have been difficult to substantiate species Clavigerinella eocanica in the earliest middle Eo- and the details of the origination and probable ancestor have cene and is unrelated to the genus Pseudohastigerina. not been satisfactorily demonstrated. The major hypotheses Clavigerinella eocanica and the lower middle Eocene that have been proposed to explain Hantkenina phylogeny species Hantkenina nuttalli share many morphologic fea- are presented in Figure 1. tures and show similar developmental patterns but differ Here we present an investigation into the origin of significantly in these aspects from P. micra. Rare, tran- Hantkenina and its evolutionary relationships with other sitional Clavigerinella-Hantkenina forms from the Hel- Eocene planktonic foraminifera using stratigraphic re- vetikum section of Austria bridge the gap between cla- cords that were unavailable to earlier workers. By using vate and tubulospinose morphologies, providing direct, comparative morphologic observations, ontogenetic mor- stratigraphically-ordered evidence of the evolutionary phometric analysis, stable isotopes, and documenting transition between Hantkenina and Clavigerinella. Cla- rare, transitional hantkeninid material from Austria, we vigerinellid ancestry is traced to a previously unde- demonstrate that Hantkenina is a monophyletic taxon that scribed low-trochospiral species, Parasubbotina eoclava evolved by gradual transition from the genus Clavigeri- sp.
    [Show full text]
  • New Radiometric 40Ar–39Ar Dates and Faunistic Analyses Refine
    www.nature.com/scientificreports OPEN New radiometric 40Ar–39Ar dates and faunistic analyses refne evolutionary dynamics of Neogene vertebrate assemblages in southern South America Francisco J. Prevosti1,2*, Cristo O. Romano2,3, Analía M. Forasiepi2,3, Sidney Hemming4, Ricardo Bonini2,5, Adriana M. Candela2,6, Esperanza Cerdeño2,3, M. Carolina Madozzo Jaén2,7,8, Pablo E. Ortiz2,7, François Pujos2,3, Luciano Rasia2,6, Gabriela I. Schmidt2,9, Matias Taglioretti10,11,12, Ross D. E. MacPhee13 & Ulyses F. J. Pardiñas2,14,15 The vertebrate fossil record of the Pampean Region of Argentina occupies an important place in South American vertebrate paleontology. An abundance of localities has long been the main basis for constructing the chronostratigraphical/geochronological scale for the late Neogene–Quaternary of South America, as well as for understanding major patterns of vertebrate evolution, including the Great American Biotic Interchange. However, few independently-derived dates are available for constraining this record. In this contribution, we present new 40Ar/39Ar dates on escorias (likely the product of meteoric impacts) from the Argentinean Atlantic coast and statistically-based biochronological analyses that help to calibrate Late Miocene–Pliocene Pampean faunal successions. For the type areas of the Montehermosan and Chapadmalalan Ages/Stages, our results delimit their age ranges to 4.7–3.7 Ma and ca. 3.74–3.04 Ma, respectively. Additionally, from Buenos Aires Province, dates of 5.17 Ma and 4.33 Ma were recovered for “Huayquerian” and Montehermosan faunas. This information helps to better calibrate important frst appearances of allochthonous taxa in South America, including one of the oldest records for procyonids (7.24–5.95 Ma), cricetids (6.95– 5.46 Ma), and tayassuids (> 3.74 Ma, oldest high-confdence record).
    [Show full text]