DOCSLIB.ORG

Palaeontological Spitsbergen Studies

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

POLISH ACADEMY OF SCIENCES INSTITU'TE OF PALEOBIOLOGY PALAEONTOLOGIA POLONICA - NO. 43, 1982 PALAEONTOLOGICAL I SPITSBERGEN STUDIES - Part I (PALEONTOLOGICZNE BL4DANIA SPITSBERGENU - CzeSC I) GERTRUDA BIERNAT- and WANDA SZYMA~~SKA DAWNICTWO NAUKOWE KRZYSZTOF BIRKENMAJER, HALINA PUGACZEWSKA and ANDRZEJ WIERZBOWSKI THE JANUSFJELLET FORMATION (JURASSIC-LOWER CRETACEOUS) AT MYKLEGARDFJELLET, EAST SPITSBERGEN BIRKENMAJER,K; PU~ACZEWSKA,H. and WIERZBOWSKI,A.,: The Janusfjellet Formation (Jurassic-Lower Creiaceous) at Myklegardfjellet, east Spitsbergen. Palaeont. Polonica, 43,107- 140. Fossiliferous marine strata of the Janusfjellet Formation (Jurassic-Lower Cretaceous) are describ- ed from Myklegardfjellet, Agardhbukta area, east Spitsbergen. The invertebrate fauna collected by the first author from these beds in 1977 has been determined by the second author (serpulids, bivalves, belemnites) and by the third author (ammonites). This assemblage allows to distinguish the Upper Callovian, the Kirnrneridgian (Lower and Upper) and the Lower Volgian stages in the lower part of the Janusfjellet Formation (Agardhfjellet Member). The upper part of the Janusfjellet Formation (Rurikfjellet Member) yielded poorly preserved fossils of little stratigraphic value. Key words: Mesozoic, stratigraphy, ammonites, bivalves, belemnites, serpulids, Spitsbergen. K. Birkenmajer, 1nstY~utNauk Geologicznych, Polska Akademia Nauk, 31-002 Krakow, Senacka 3; H. Pugaczewska, Zaklad Paleobiologii, Polska Akadernia Nauk, 02-089 Warszawa,irwirki i Wigury 93; A. Wierzbowski, Instytut Geologii Poditawowej, Uniwersytet Worszawski, 02-089 Warszawa, Zwirki i Wigury 93, Poland. Received: June 1979. PORMACJA JANUSFJELLFS (JURA - DOLNA KREDA) MYKLEGARDFIELLFT, WSCHODNI SPITSBERGEN Streszczenie. - W pracy przedstawiono wyniki badab nad stratygrafia formacji Janusfjeiiet (jura-dolna kreda) na Mykle gardfjellet (obszar Agardhbukta) na wschodnim Spitsbergenie. Fauna bezk~gowwwpocho&ca z tych warstw zostala zebrana przez pierwszego autora podczas kierowanej przez niego polsko-amerykahkiej ekspedycji dzialajqcej W 1977 r. na wschodnim Spitsbergenie. Zespa skamienialoki zawierajqcy og6iem 33 gatunki rnal%w, belemnitow, serpulid (opi- sanych przez H. PUGACZEWSK~)oraz arnonitow (opisanych pmz A. WIWZBO~~KIEOO)pomolil na wyrbinienie 20 pozio- m6w faunistycznych. Na ich podstawie W dolnej cz&i formacji (ogniwo Agardhfjellet) stwierdzono gorny kelowej, dolny i ghny kimeryd oraz dolny wolg. G6rna cz& formacji Janusfiellet (ogniwo Rurikfjellet) zawiera Ae zachowanq faun~ o malej przydatnoki stratygraficmej. The faunas investigated have been collected by the first author from marine Jurassic- Lower Cretaceous strata of the Janusfjellet Formation at Myklegardfjellet, Agardhbukta area (figs. 1, 2) during a Polish-American expedition led by him to east Spitsbergen in 1977. 108 K. BIRKENMAIER, H. PUGACZEWSKA AND A WIERZBOWSKI The serpulids, bivalves and belemnites have been determined by the second author and the ammonites by the third author. The specimens here described are housed in the Institute of Paleobiology, Polish Academy of Sciences, Warsaw (abbreviated as ZPAL). STRATIGRAPHIC WSiTiON OF THE JANUSFJELLET FORMATiON by KRZYSZTOF BIRKENMAJER 3 The Janusfjellet Formation (MAJOR 1964: map - in MAJORand NAGY1972; Janusfjel- let Subgroup of PARKER1967) consists of marine strata contained between two continental complexes -a basal one represented by the De Geerdalen Formation (Upper Triassic - ?Het- tangian), and a top one - represented by the Helvetiafjellet Formation (BUCHANet al. 1965, PARKER1967, BIRKENMAJER1972, 1975, 1977). In central and eastern Spitsbergen the formation is usually subdivided into two units: the lower Agardhfjellet Member (Formation of Parker 1967) and the upper Rurikfjellet Member (Formation of PARKER1967), separated by a non- sequence about the Jurassic/Cretaceous boundary. A characteristic yellow clay horizon at the base of the Rurikfjellet Formation (PARKER1967, BJAERKEet al, 1976) has been distinguished as the Myklegardfjellet Bed (BIRKENMAJER1980). In southern Spitsbergen, mainly in Torell Land, a tripartite subdivision of the Janusfjellet Formation was found usefiil (ROSYCKI1959, BIRKENMAJER1972, 1975). The Janusfjellet For- mation is there subdivided into the lower Ingebrigtsenbukta Member, the middle Tirolarpasset Member and the upper Ullaberget Member (Table 1). In Torell Land there is either a conti- nuous sedimentation throughout the Janusfjellet Formation, or - in some areas - a break in deposition and intraformational erosion appears at the base of the Tirolarpasset Member. In the latter case, it is marked by arenaceousconglomeratic rocks of the Polakkfjellet Bed. A hiatus which Covers most of the Lower and Middle Jurassic separates the De Geerdalen Formation from the Janusfjellet Formation. The latter begins as a rule with the Brentskard- haugen Bed (phosphorite conglomerate) which is a very characteristic thin phosphorite-quartz conglomerate or pebbly clay containing reworked marine fauna of several Liassic through Dogger zones, as well as some still older material (see B~CENMAER 1975, BIRKENWRand PUGACZEWSKA1975). The conglomeratic bed itself is believed to represent the Lower Callovian or uppermost Bathonian - Lower Callovian. Lithostratigraphic sections investigated at Myklegardfjellet, which include the De Ge- erdalen Formation, the Janusfjellet Formation and the Helvetiafjellet Formation, are shown in figs. 3 and 4. A detailed description of strata in these sections is presented elsewhere (BIRKEN- MAJER 1980). Agardhfjeiiet Member Loose fragments of quartz-phosphatic congiomerate and pebbles of grey fossiliferous phosphorite and white quartz which occur at the foot of Myklegardfjellet scattered over the morphologic ledge formed by the De Geerdalen Formation, indicate the presence of the Brent- skardhaugen Bed at the base of the discussed sequence of the Janusfjellet Formation (fig. 4). The basal part of Agardhfjellet Member, some 40 m thick, is very poorly exposed. This Part of the member is represented by black shales, possibly with some clay-ironstone and/or siltstone intercalations. Higher up come black to dark-grey, rather hard shales and papery-shales which in the lower part of the member, up to about 135 m above the bottom of the unit (see fig. 4), contain THE JANUSFJELLBT FORMATION AT MWGARDFmLLET thin intercalations of often iron-rich siltstone, fine-grained sandstone and black bituminous shale, subordinately also clay-ironstone layers. In the upper part of the Agardhfjellet Member, the sandstone and siltstone intercalations disappear, bituminous shales become infrequent, while clay-ironstones (siderites) become a typical feature. The latter form thin intercalations or lenses in a lower portion of the upper Part of the Agardhfjellet Member, and zones of discoidal concretions or balls in the upper- most portion of the member. K. BIRKENMAJER, H. PUGACZEWSKA AND A. WIl?RZBOWSKI A GARDHBUCOTA \ 0 123-4 5 1 Kilometres 20' 1~LO' - le" 19'~ 78'~+ I Rockslides Janusfjellet Formation Dolerite De Geerdalen Formation Helvetiafjellet Formation Fig. 2 Geological sketch-map of the Agardhbukta area, with position of stratigraphical sections: A (fig. 3) and B (fig. 4). About 20 fossiliferous horizons have been recognized in the section of SW Myklegardfjellet (BIRKENMAJER1980). Eight of these (Faunules 1-8, See below) yielded determinable invertebrate fossils, here listed with age ranges (after determinations by H. PUGACZEWSKAand A. WIERZ- BOWSKI) and stratigraphical comments. Faunule 1 (80-81 m) ?Longaeviceras sp. This ammonite genus is characteristic of the Upper Callovian. Faunule 2 (1 10 m) Buchia bronni (LAHUSEN): Oxfordian - Upper Kimmeridgian ; Rasenia (Zonovia) evoluta SPATH:Lower Kimmeritgian (higher part of cymodoce Zone); Amoeboceras (Amoebites) cf. kitchini (Salfeld): Lower Kimmeridgian to Upper Kimmerid- gian (mutabilis Zone); THE JANUSFJELLET FORMATION AT MYKLEGARDFJELLET 111, ' Tablel Lithostratigraphic standard for the Jurassic - Lower Cretaceous of Spitsbergen: M - Myklegardfjellet Bed; P - Po- lakkfjellet Bed. CENTRAL SPITSBERGEN SOUTH SPITSBERGEN Carolinefjellet Formation 270-850m W .. 1 BARREMIAN Helvetiafjellet Format; On 50- 100m / I $1; $1; r ~urikfjellet Mb. Ullaberget Mb. 10-150m Mb. 28-L00m I I I Ag~rdhfjellet Mb. Ingebrigtsen - bukta Mb. LO-2L5m 1 IYI HETTANGIAN I De Geerdalen Formation I Amoeboceras (Amoebites) sp. This fauna is clearly of a Lower Kimmeridgian age, as indicated by the presence of Ra- senia (Zonovia) evoluta. Faunule 3 (111-112 m) Buchia bronni (LAH.) cf. Iata (TRAUTSCHOLD):LOwer Kimmeridgian. Amoeboceras (Amoebites) cf. salfeldi SPATH:Lower Kimmeridgian (higher part of cy- modoce Zone) to lowest Upper Kimmeridgian. This assemblage is indicative of the LowerrUpper Kimmeridgian boundary. Faunule 4 (122 m) Astarte (Astarte) cf. nummus (SAUVAGE):Oxfordian - Lower Kimmeridgian; Prorokia cf. problematica (BUVIGNIER):Oxfordian - Lower Kimmeridgian. As this faunule occurs some 10 m above Faunule 3, its Upper Kimmeridgian age seems most probable. - Mem ber -orr (B e d) itio - I 0 * Cwo Festningen > - zW .! .. Qi - - W *- C 7 C 0 7 gardhfjellet 'Mctay cross- bedding shale zone of alteration (palaeoweatheringl --.- disconformity . -bituminous shale balls - - discs and ellipsoids oo o o o .-.- conglo- , LI lenticles Imerate - Fig. 3 Position of inwebrate fauna (Faunules 9 and 10) in the Ruriktjekt Member at Mykiegardfjellet S. THE JANUSFJELLET FORMATION AT MYKLEGARDFJELLET lember rm- (Bedl . -ion urikfjellet ' My
Recommended publications
  • Post-Carboniferous Stratigraphy, Northeastern Alaska by R

    Post-Carboniferous Stratigraphy, Northeastern Alaska by R

    Post-Carboniferous Stratigraphy, Northeastern Alaska By R. L. DETTERMAN, H. N. REISER, W. P. BROSGE,and]. T. DUTRO,JR. GEOLOGICAL SURVEY PROFESSIONAL PAPER 886 Sedirnentary rocks of Permian to Quaternary age are named, described, and correlated with standard stratigraphic sequences UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON 1975 UNITED STATES DEPARTMENT OF THE INTERIOR ROGERS C. B. MORTON, Secretary GEOLOGICAL SURVEY V. E. McKelvey, Director Library of Congress Cataloging in Publication Data Detterman, Robert L. Post-Carboniferous stratigraphy, northeastern Alaska. (Geological Survey Professional Paper 886) Bibliography: p. 45-46. Supt. of Docs. No.: I 19.16:886 1. Geology-Alaska. I. Detterman, Robert L. II. Series: United States. Geological Survey. Professional Paper 886. QE84.N74P67 551.7'6'09798 74-28084 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 Stock Number 024-001-02687-2 CONTENTS Page Page Abstract __ _ _ _ _ __ __ _ _ _ _ _ _ _ _ _ _ _ _ __ __ _ _ _ _ _ _ __ __ _ _ __ __ __ _ _ _ _ __ 1 Stratigraphy__:_Continued Introduction __________ ----------____ ----------------____ __ 1 Kingak Shale ---------------------------------------- 18 Purpose and scope ----------------------~------------- 1 Ignek Formation (abandoned) -------------------------- 20 Geographic setting ------------------------------------ 1 Okpikruak Formation (geographically restricted) ________ 21 Previous work and acknowledgments ------------------ 1 Kongakut Formation ----------------------------------
  • Organic Carbon Isotope Chemostratigraphy of Late Jurassic Early Cretaceous Arctic Canada

    Organic Carbon Isotope Chemostratigraphy of Late Jurassic Early Cretaceous Arctic Canada

    University of Plymouth PEARL https://pearl.plymouth.ac.uk Faculty of Science and Engineering School of Geography, Earth and Environmental Sciences Finding the VOICE: organic carbon isotope chemostratigraphy of Late Jurassic Early Cretaceous Arctic Canada Galloway, JM http://hdl.handle.net/10026.1/15324 10.1017/s0016756819001316 Geological Magazine Cambridge University Press (CUP) All content in PEARL is protected by copyright law. Author manuscripts are made available in accordance with publisher policies. Please cite only the published version using the details provided on the item record or document. In the absence of an open licence (e.g. Creative Commons), permissions for further reuse of content should be sought from the publisher or author. Proof Delivery Form Geological Magazine Date of delivery: Journal and vol/article ref: geo 1900131 Number of pages (not including this page): 15 This proof is sent to you on behalf of Cambridge University Press. Please check the proofs carefully. Make any corrections necessary on a hardcopy and answer queries on each page of the proofs Please return the marked proof within 2 days of receipt to: [email protected] Authors are strongly advised to read these proofs thoroughly because any errors missed may appear in the final published paper. This will be your ONLY chance to correct your proof. Once published, either online or in print, no further changes can be made. To avoid delay from overseas, please send the proof by airmail or courier. If you have no corrections to make, please email [email protected] to save having to return your paper proof. If corrections are light, you can also send them by email, quoting both page and line number.
  • Upper Cretaceous Deposits in the Northwest of Saratov Region, Part 2: Problems of Chronostratigraphy and Regional Geological History A

    Upper Cretaceous Deposits in the Northwest of Saratov Region, Part 2: Problems of Chronostratigraphy and Regional Geological History A

    ISSN 0869-5938, Stratigraphy and Geological Correlation, 2008, Vol. 16, No. 3, pp. 267–294. © Pleiades Publishing, Ltd., 2008. Original Russian Text © A.G. Olfer’ev, V.N. Beniamovski, V.S. Vishnevskaya, A.V. Ivanov, L.F. Kopaevich, M.N. Ovechkina, E.M. Pervushov, V.B. Sel’tser, E.M. Tesakova, V.M. Kharitonov, E.A. Shcherbinina, 2008, published in Stratigrafiya. Geologicheskaya Korrelyatsiya, 2008, Vol. 16, No. 3, pp. 47–74. Upper Cretaceous Deposits in the Northwest of Saratov Region, Part 2: Problems of Chronostratigraphy and Regional Geological History A. G. Olfer’eva, V. N. Beniamovskib, V. S. Vishnevskayab, A. V. Ivanovc, L. F. Kopaevichd, M. N. Ovechkinaa, E. M. Pervushovc, V. B. Sel’tserc, E. M. Tesakovad, V. M. Kharitonovc, and E. A. Shcherbininab a Paleontological Institute, Russian Academy of Sciences, Profsoyuznaya ul. 123, Moscow, 117997 Russia b Geological Institute, Russian Academy of Sciences, Pyzhevskii per. 7, Moscow, 119017 Russia c Saratov State University, Astrakhanskaya ul., 83, Saratov, 410012 Russia d Moscow State University, Vorob’evy Gory, Moscow, 119991 Russia Received November 7, 2006; in final form, March 21, 2007 Abstract—Problems of geochronological correlation are considered for the formations established in the study region with due account for data on the Mezino-Lapshinovka, Lokh and Teplovka sections studied earlier on the northwest of the Saratov region. New paleontological data are used to define more precisely stratigraphic ranges of some stratigraphic subdivisions, to consider correlation between standard and local zones established for different groups of fossils, and to suggest how the Upper Cretaceous regional scale of the East European platform can be improved.
  • Palaeoecology and Palaeoenvironments of the Middle Jurassic to Lowermost Cretaceous Agardhfjellet Formation (Bathonian–Ryazanian), Spitsbergen, Svalbard

    Palaeoecology and Palaeoenvironments of the Middle Jurassic to Lowermost Cretaceous Agardhfjellet Formation (Bathonian–Ryazanian), Spitsbergen, Svalbard

    NORWEGIAN JOURNAL OF GEOLOGY Vol 99 Nr. 1 https://dx.doi.org/10.17850/njg99-1-02 Palaeoecology and palaeoenvironments of the Middle Jurassic to lowermost Cretaceous Agardhfjellet Formation (Bathonian–Ryazanian), Spitsbergen, Svalbard Maayke J. Koevoets1, Øyvind Hammer1 & Crispin T.S. Little2 1Natural History Museum, University of Oslo, P.O. Box 1172 Blindern, 0318 Oslo, Norway. 2School of Earth and Environment, University of Leeds, Leeds LS2 9JT, United Kingdom. E-mail corresponding author (Maayke J. Koevoets): [email protected] We describe the invertebrate assemblages in the Middle Jurassic to lowermost Cretaceous of the Agardhfjellet Formation present in the DH2 rock-core material of Central Spitsbergen (Svalbard). Previous studies of the Agardhfjellet Formation do not accurately reflect the distribution of invertebrates throughout the unit as they were limited to sampling discontinuous intervals at outcrop. The rock-core material shows the benthic bivalve fauna to reflect dysoxic, but not anoxic environments for the Oxfordian–Lower Kimmeridgian interval with sporadic monospecific assemblages of epifaunal bivalves, and more favourable conditions in the Volgian, with major increases in abundance and diversity of Hartwellia sp. assemblages. Overall, the new information from cores shows that abundance, diversity and stratigraphic continuity of the fossil record in the Upper Jurassic of Spitsbergen are considerably higher than indicated in outcrop studies. The inferred life positions and feeding habits of the benthic fauna refine our understanding of the depositional environments of the Agardhfjellet Formation. The pattern of occurrence of the bivalve genera is correlated with published studies of Arctic localities in East Greenland and northern Siberia and shows similarities in palaeoecology with the former but not the latter.
  • PINE VALLEY Mount Wabi to Solitude Mountain Northeastern British Columbia

    PINE VALLEY Mount Wabi to Solitude Mountain Northeastern British Columbia

    BRITISHCOLUMBIA DEPARTMENT OF MINES AND PETROLEUMRESOURCES HoN. D.L. BROTHERS,Minister K. B. BLAKEY,Deputy Minister ~~ BULLETIN No. 52 GEOLOGY of the PINE VALLEY Mount Wabi to Solitude Mountain Northeastern British Columbia by J. E. HUGHES GEOLOGY OF THE PINE .VALLEY Mount Wabi to Solitude Mountain Northeastern British Columbia SUMMARY 1. The map-area covers the Pine Valley, in the Rocky Mountain Foothills of northeastern British Columbia, from latitude 55 degrees 30 minutes to latitude 55 degrees 45 minutes north. 2. The exposed rocks are Triassic, Jurassic, and Cretaceous in age. The suc- cession (Ladinian to Cenomanian) is between 10,000 and 20,000 feet thick, and mostly of marine deposition. Most stratigraphic units thicken westward. 3. In the Triassic, the Grey Beds contain limestones, dolomites, siltstones, and sandstones; and the overlying PardonetFormation, argillaceous limestones with fossil shell beds of Halobia and Monotis. 4. The Fernie Group of Jurassic age consists of: thin limestone, interbedded shales and siltstones with cherty banding, the Nordegg Beds; followed by the Middle Shales; and in the upper part, interbedded shales, siltstones, and sandstone:;, the Transition Beds, which mark the change to Beaudette deposition. 5. The Beaudette Group of late Jurassic to early Cretaceous age has three formations: the Monteith, thick sandstones mostly, and with quartzites in the 'upper third part; the BeattiePeaks, interbedded shales, siltstones, andsandstones; and the Monach Formation,sandstones, with or without quartzite beds at the top. Facies changes and incomplete outcrops make it advisable to map Beaudette strata as an undivided unit to the west. 6. Coal measures overlying Beaudette strata are described by the term Crassier Group.
  • Characteristic Jurassic Mollusks from Northern Alaska

    Characteristic Jurassic Mollusks from Northern Alaska

    Characteristic Jurassic Mollusks From Northern Alaska GEOLOGICAL SURVEY PROFESSIONAL PAPER 274-D Characteristic Jurassic Mollusks From Northern Alaska By RALPH W. IMLAY A SHORTER CONTRIBUTION TO GENERAL GEOLOGY GEOLOGICAL SURVEY PROFESSIONAL PAPER 274-D A study showing that the northern Alaskan faunal succession agrees with that elsewhere in the Boreal region and in other parts of North America and in northwest Europe UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1955 UNITED STATES DEPARTMENT OF THE INTERIOR Douglas McKay, Secretary GEOLOGICAL SURVEY W. E. Wrather, Director For sale by the Superintendent of Documents, U. S. Government Printing Office Washington 25, D. C. - BMMH§ts (paper cover) Price $1.00 CONTENTS Page Abstract_________________ 69 Introduction _________________ 69 Biologic analysis____________ 69 Stratigraphic summary. _______ 70 Ages of fossils________________ 73 Comparisons with other faunas. 75 Ecological considerations___ _ 75 Geographic distribution____. 78 Summary of results ___________ 81 Systematic descriptions__ _. 82 Literature cited____________ 92 Index_____________________ 95 ILLUSTRATIONS [Plates &-13 follow Index] PLATE 8. Inoceramus and Gryphaea 9. Aucella 10. Amaltheus, Dactylioceras, "Arietites," Phylloceras, and Posidonia 11. Ludwigella, Dactylioceras, and Harpoceras. 12. Pseudocadoceras, Arcticoceras, Amoeboceras, Tmetoceras, Coeloceras, and Pseudolioceras 13. Reineckeia, Erycites, and Cylindroteuthis. Page FIGXTKE 20. Index map showing Jurassic fossil collection localities in northern Alaska.
  • TREATISE ONLINE Number 48

    TREATISE ONLINE Number 48

    TREATISE ONLINE Number 48 Part N, Revised, Volume 1, Chapter 31: Illustrated Glossary of the Bivalvia Joseph G. Carter, Peter J. Harries, Nikolaus Malchus, André F. Sartori, Laurie C. Anderson, Rüdiger Bieler, Arthur E. Bogan, Eugene V. Coan, John C. W. Cope, Simon M. Cragg, José R. García-March, Jørgen Hylleberg, Patricia Kelley, Karl Kleemann, Jiří Kříž, Christopher McRoberts, Paula M. Mikkelsen, John Pojeta, Jr., Peter W. Skelton, Ilya Tëmkin, Thomas Yancey, and Alexandra Zieritz 2012 Lawrence, Kansas, USA ISSN 2153-4012 (online) paleo.ku.edu/treatiseonline PART N, REVISED, VOLUME 1, CHAPTER 31: ILLUSTRATED GLOSSARY OF THE BIVALVIA JOSEPH G. CARTER,1 PETER J. HARRIES,2 NIKOLAUS MALCHUS,3 ANDRÉ F. SARTORI,4 LAURIE C. ANDERSON,5 RÜDIGER BIELER,6 ARTHUR E. BOGAN,7 EUGENE V. COAN,8 JOHN C. W. COPE,9 SIMON M. CRAgg,10 JOSÉ R. GARCÍA-MARCH,11 JØRGEN HYLLEBERG,12 PATRICIA KELLEY,13 KARL KLEEMAnn,14 JIřÍ KřÍž,15 CHRISTOPHER MCROBERTS,16 PAULA M. MIKKELSEN,17 JOHN POJETA, JR.,18 PETER W. SKELTON,19 ILYA TËMKIN,20 THOMAS YAncEY,21 and ALEXANDRA ZIERITZ22 [1University of North Carolina, Chapel Hill, USA, [email protected]; 2University of South Florida, Tampa, USA, [email protected], [email protected]; 3Institut Català de Paleontologia (ICP), Catalunya, Spain, [email protected], [email protected]; 4Field Museum of Natural History, Chicago, USA, [email protected]; 5South Dakota School of Mines and Technology, Rapid City, [email protected]; 6Field Museum of Natural History, Chicago, USA, [email protected]; 7North
  • Phylogeny and Evolution of Ontogeny of the Family Oxytomidae Ichikawa, 1958 (Mollusca: Bivalvia) O

    Phylogeny and Evolution of Ontogeny of the Family Oxytomidae Ichikawa, 1958 (Mollusca: Bivalvia) O

    ISSN 08695938, Stratigraphy and Geological Correlation, 2010, Vol. 18, No. 4, pp. 376–391. © Pleiades Publishing, Ltd., 2010. Original Russian Text © O.A. Lutikov, I.E. Temkin, B.N. Shurygin, 2010, published in Stratigrafiya. Geologicheskaya Korrelyatsiya, 2010, Vol. 18, No. 4, pp. 28–44. Phylogeny and Evolution of Ontogeny of the Family Oxytomidae Ichikawa, 1958 (Mollusca: Bivalvia) O. A. Lutikova, I. E. Temkinb, and B. N. Shuryginc aScientific Research Institute of Paleontology, Stratigraphy and Sedimentology, St. Petersbyrg, Russia email: [email protected] bDivision of Invertebrate Zoology, American Museum of Natural History, New York and Smithsonian Institution, PO Box 37012, MRC 163, Washington, DC 200137012, USA email: [email protected] cInstitute of Petroleum Geology and Geophysics, Siberian Branch, Russian Academy of Sciences pr. Akad. Koptyuga 3, Novosobirsk90, 630090 Russia email: [email protected] Received August 02, 2009; in final form, November 17, 2009 Abstract—We described ontogenies and reconstructed morphogeneses of hinges in some supraspecific taxa of the bivalve family Oxytomidae Ichikawa, 1958 from the Mesozoic of Russia. The phylogeny of the family is reconstructed using evolutionary and cladistic methods. The appearance of the endemic genus Arctotis Bodylevsky, 1960 in the epicontinental seas of Siberia can be explained in terms of gradual transformations of the ligament and byssal apparatus in the Northern Siberian members of Praemeleagrinella Lutikov et Shury gin, 2009 and Praearctotis Lutikov et Shurygin, 2009. Key words: bivalves, Oxytomidae, taxonomy, ontogeny, phylogeny, Mesozoic. DOI: 10.1134/S0869593810040027 INTRODUCTION according to the increase of the coefficients of similar ity in unweighted characters and that a phylogram is Bivalves of the family Oxytomidae Ichikawa, 1958 based on the principle of parsimony, without consider (superfamily Pectinoidea Rafinesque, 1815) are wide ing chronoclines (Krassilov, 1977; Eldredge, Cracraft, spread in the Jurassic and Cretaceous of Russia, North 1980; , 1988).
  • An Offshore Transgressive–Regressive Mudstone-Dominated Succession from the Sinemurian of Skåne, Sweden

    An Offshore Transgressive–Regressive Mudstone-Dominated Succession from the Sinemurian of Skåne, Sweden

    An offshore transgressive–regressive mudstone-dominated succession from the Sinemurian of Skåne, Sweden Nils Frandsen and Finn Surlyk A Sinemurian mudstone-dominated succession was exposed until recently in the Gantofta quarry in Skåne, southern Sweden. The deposits are placed in the Döshult and Pankarp Members of the Sinemurian–Aalenian Rya Formation. Similar facies of the same age are widespread in the Danish Basin where they constitute the F-Ib unit (F-I member) of the Fjerritslev Formation. The Gantofta succession thus represents the easternmost extension of the environment characteris- tic of the Fjerritslev Formation and is essentially the only locality where it has been possible to study the facies of this formation in outcrop. Sedimentation seems to have taken place under rel- atively quiet tectonic conditions except for the possible fault-control of the basin margin. The lower part of the Gantofta section is of Early and early Late Sinemurian age. It represents the upper part of the Döshult Member and consists of muddy, lower shoreface sandstones, abruptly overlain by dark, bioturbated, fossiliferous mudstones with thin storm siltstones and sandstones. They are overlain by the Upper Sinemurian Pankarp Member which comprises red-brown, restricted marine calcareous mudstones with an upwards increasing number of storm siltstones and sandstones reflecting general shallowing and shoreline progradation. The succession spans the greater part of two simple sequences with a distal sequence bound- ary located at the boundary between the Döshult Member and the Pankarp Member. The exposed part of the lower sequence includes a thick transgressive systems tract and a very thin highstand systems tract.
  • JURASSIC-LOWER CRETACEOUS -.: Palaeontologia Polonica

    JURASSIC-LOWER CRETACEOUS -.: Palaeontologia Polonica

    KRZYSZTOF BIRKENMAJER , HALINA PUGACZEWSKA and ANDRZEJ WIERZBOWSKI THE JANUSFJELLET FORMATION (JURASSIC-LOWER CRETACEOUS) AT MYKLEGARDFJELLET, EAST SPITSBERGEN BIRKENMAJER, K; PUGACZEWSKA, H. and WIERZBOWSKI, A.,: The Janusfjellet Formation (Jurassic-Lower Cretaceous) at Myklegardfjellet, cast Spitsbergen.Palaeont. Polonica, 43, 107-140. \ Fossiliferous marine strata of the Janusfjellet Formation (Jurassic-Lower Cretaceous) are describ­ ed from Myklcgardfjellet, Agardhbukta area , east Spitsbergen. The invertebrate fauna collected by the first author from these beds in 1977 has been determin ed by the second author (serpulids, bivalves, belemnites) and by the third author (ammonit es). This assemblage allows to distinguish the Upper Callovian, the Kimmeridgian (Lower and Upper) and the Lower Volgian stages in the lower part of the Janusfjellet Formation (Agardhfjellet Member) . The upper part of the Janusfjellet Formation (Rurikfjellet Member) yielded poorly preserved fossils of litt le stratigraphic value . Key words: Mesozoic, stratigraphy, ammonites, bivalves, belemni tes, serpulids, Spitsbergen, K. Birkenmajer, Ins tytut Nauk Geologicznych,Po/ska Akademia Nauk, 31-002 Krakow, Senacka 3 ; H. Pugaczewska, Zakiad Paleobiologii,Po/ska Akademia Nauk, 02-089 Warszawa, Z lI'irki i Wigury 93; A. Wierzbowski, Instytut Geologii Podsta wowej, Unlwersytet Warszawskl, 02-089 Warszawa, Z wirki i Wigury 93, Po/and. Received: June 1979. FORMACJA JANUSFJELLET (JU RA - DOLNA KR EDA) MYKLEGARDFJELLET. WSCHODNI SPITSBERGEN Streszczenie. - W pracy przedstawion o wyniki bada ri nad stra tygrafia formacji Janusfjellet (jura-d olna kreda) na Mykle­ gardfj ellet (obszar Agardhbukta) na wschodnim Spitsbergenie. Fauna bezkregowco w pochodzaca z tych warstw zostala zebrana przez pierwszcgo autora podczas kierowanej przez niego polsko-amerykanskiej ekspedycji dzialajqcej w 1977 r. na wschodnim Spitsbergcnie, Zesp61 skamienialoSci zawierajacy og61em 33 gatunki rnalzow, belemni t6w, serpulid (opi­ sanych przez H.
  • Hydrocarbon Seeps from Close to the Jurassic–Cretaceous Boundary, Svalbard

    Hydrocarbon Seeps from Close to the Jurassic–Cretaceous Boundary, Svalbard

    Palaeogeography, Palaeoclimatology, Palaeoecology 306 (2011) 15–26 Contents lists available at ScienceDirect Palaeogeography, Palaeoclimatology, Palaeoecology journal homepage: www.elsevier.com/locate/palaeo Hydrocarbon seeps from close to the Jurassic–Cretaceous boundary, Svalbard Øyvind Hammer a,⁎, Hans A. Nakrem a, Crispin T.S. Little b, Krzysztof Hryniewicz a, Michael R. Sandy c, Jørn H. Hurum a, Patrick Druckenmiller d, Espen M. Knutsen a, Magne Høyberget e a Natural History Museum, Box 1172 Blindern, 0318 Oslo, Norway b School of Earth and Environment, University of Leeds, Leeds LS2 9JT, United Kingdom c Department of Geology, University of Dayton, Dayton, OH 45469–2364, USA d University of Alaska Museum, 907 Yukon Dr., Fairbanks, AK 99775, USA e Rennesveien 14, 4513 Mandal, Norway article i nfo abstract Article history: Fifteen carbonate bodies, interpreted as having been formed at hydrocarbon seeps, have been found in the Received 3 December 2010 Sassenfjorden area of Spitsbergen, Svalbard. The bodies, up to 5 m wide, are found in the siltstones and Received in revised form 11 March 2011 mudstones of the uppermost Slottsmøya Member, in the Upper Jurassic to lowermost Cretaceous Accepted 18 March 2011 Agardhfjellet Formation. The age of the seeps is close to the Volgian–Ryazanian (Jurassic–Cretaceous) Available online 2 April 2011 boundary, and the Mjølnir impact event in the Barents Sea. The Sassenfjorden area carbonates show complex and heterogeneous structures typical of hydrocarbon seeps, including zoned (botryoidal) cement textures, Keywords: fi fi δ13 Hydrocarbon seeps ssure-in lling sparite, and breccias. Stable isotope analyses show highly negative C values (down to ca. Carbonates −43‰ VPDB) in the zoned carbonate cements, consistent with authigenic precipitation in a hydrocarbon-rich Jurassic–Cretaceous boundary environment.
  • Mid-Nineteenth Century Cretaceous Studies in the Canadian Interior Plains W

    Mid-Nineteenth Century Cretaceous Studies in the Canadian Interior Plains W

    Document generated on 09/25/2021 4 p.m. HSTC Bulletin Journal of the History of Canadian Science, Technology and Medecine Revue d’histoire des sciences, des techniques et de la médecine au Canada Mid-Nineteenth Century Cretaceous Studies in the Canadian Interior Plains W. O. Kupsch and W.G.E. Caldwell Volume 6, Number 2 (21), mai 1982 URI: https://id.erudit.org/iderudit/800136ar DOI: https://doi.org/10.7202/800136ar See table of contents Publisher(s) HSTC Publications ISSN 0228-0086 (print) 1918-7742 (digital) Explore this journal Cite this article Kupsch, W. O. & Caldwell, W. (1982). Mid-Nineteenth Century Cretaceous Studies in the Canadian Interior Plains. HSTC Bulletin, 6(2), 59–84. https://doi.org/10.7202/800136ar Copyright © Canadian Science and Technology Historical Association / This document is protected by copyright law. Use of the services of Érudit Association pour l'histoire de la science et de la technologie au Canada, 1982 (including reproduction) is subject to its terms and conditions, which can be viewed online. https://apropos.erudit.org/en/users/policy-on-use/ This article is disseminated and preserved by Érudit. Érudit is a non-profit inter-university consortium of the Université de Montréal, Université Laval, and the Université du Québec à Montréal. Its mission is to promote and disseminate research. https://www.erudit.org/en/ 5 9 MID-NINETEENTH CENTURY CRETACEOUS STUDIES IN THE CANADIAN INTERIOR PLAINS W.O. Kupsch* and W.G.E. Caldwell* (Received 2 February 1981. Revised/Accepted 19 May 1982.) BACKGROUND TO THE BRITISH AND CANADIAN EXPEDITIONS Mid-nineteenth century geological exploration of the Western Interior Plains of North America, and particularly of the widespread, underlying Cretaceous rocks, has had a profound influence on developing notions of the geological evolution of the region.