DOCSLIB.ORG

Deep Sea Drilling Project Initial Reports Volume 79

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

26. JURASSIC FORAMINIFERS FROM THE MAZAGAN PLATEAU, DEEP SEA DRILLING PROJECT SITE 547, LEG 79, OFF MOROCCO1 Wolfgang Riegraf and Hanspeter Luterbacher, Institut und Museum für Geologie und Palàontologie, Universitàt Tubingen and R. Mark Leckie, Department of Geological Sciences, University of Colorado2 ABSTRACT The first marine incursion of the incipient North Atlantic Ocean is recorded in the uppermost Triassic to Lower Ju- rassic sequence of DSDP Site 547 off central Morocco. A lithologic change from continental red beds below to slope breccias and hemipelagic carbonates above indicates that a carbonate ramp was probably established by Sinemurian time along the Moroccan continental margin and that subsidence in the adjacent basin was rapid in the early phases of continental rift. Foraminifers recovered from the Liassic (Sinemurian-Pliensbachian) basinal deposits are diverse and well preserved. The faunas are compositionally similar to contemporaneous neritic assemblages of Europe and the Grand Banks of Newfoundland. The Middle Jurassic in Hole 547B is characterized by regressive deposits that are poor in foraminifers. The major Late Jurassic "Atlantic" transgression is again represented by basinal deposits consisting of limestone breccias and pelagic carbonates. Foraminifers recovered from this interval are transitional between Late Ju- rassic assemblages reported from deep-sea deposits in the North Atlantic and typical Late Jurassic neritic assemblages of Europe. The Late Jurassic assemblages of Hole 547B are primarily dominated by nodosariids and spirillinids with moderate abundances of simple arenaceous forms. Nonreticulate epistominids occur very rarely in the Upper Jurassic of Hole 547B. It is tentatively suggested that these represent upper bathyal assemblages. INTRODUCTION consists of limestone breccias overlain by redeposited(?) nodular limestones with minor black shales (Fig. 2). By An undeformed sequence of Jurassic carbonates and Sinemurian time a carbonate ramp was probably already carbonate breccias with lesser amounts of interbedded established along the adjacent Moroccan margin and shales was drilled at Site 547 from the area of the distal was a source of the redeposited sediment. continental margin off Morocco (Fig. 1). The Jurassic Section 547B-14-2 through Sample 547B-11,CC con- section at Hole 547B is relatively thin (154 m) and con- tain limestone breccias. The core-catcher sample from tains stratigraphic gaps, particularly between the Lias Core 11 contains a rich foraminiferal fauna indicating a (Lower Jurassic) and Dogger (Middle Jurassic). Although late Pliensbachian age, but a Middle Jurassic age is sug- this part of the Northwest African continental margin gested from lithostratigraphic considerations (Steiger and was essentially sediment-starved during the Jurassic, the Jansa, this volume; ?regressive Bajocian, Jansa et al., vertical lithologic changes compare favorably with deep- this volume). The Middle and Upper Jurassic section of water Tethyan sections from around the Mediterranean Hole 547B consists of hardground cycles in Core 11 (Steig- (Bernoulli and Kàlin, this volume) and the central North er and Jansa, this volume; Jansa et al., this volume) fol- Atlantic (Jansa et al., this volume). Transgressive/re- lowed by limestone breccias and pelagic carbonates with gressive phases inferred from the stratigraphic record of intervals of turbidites in Core 547B-10 through Section Site 547 generally parallel those interpreted from Mo- 547B-6-2. roccan epicontinental sections (Ager, 1974; Jansa and For detailed lithologic descriptions and interpretations Wiedmann, 1982). of the upper Triassic-Jurassic sequence, we refer the reader The Jurassic carbonate section of Site 547 (Unit VI) to the site chapter, to chapters by Jansa et al., Bernoulli overlies (?)Rhaetian-Hettangian (uppermost Triassic- and Kàlin, Steiger and Jansa, to the Leg 79 synthesis by Lower Jurassic) continental red beds (Fenton, this vol- Hinz and Winterer (this volume) and to Gradstein et al., ume). This site records the first marine incursion of the 1975. incipient central North Atlantic Ocean. The underlying In this contribution we describe Jurassic foraminifers continental deposits change rapidly upward to hemipe- and other associated microbiota found in washed resi- lagic and mass-flow deposits of the slope environment. dues from Hole 547B. Figure 3 summarizes the distribu- The Lower Jurassic (Core 547B-24 to Section 547B-14-2) tion of the various foraminiferal superfamilies through the section. Figure 4 shows the distribution of the fora- miniferal species recorded at Site 547B and their relative Hinz, K., Winterer, E. L., et al., Init. Repts. DSDP, 79: Washington (U.S. Govt. Print- abundances, and Figure 5 the distribution and relative ing Office). 2 Addresses: (Riegraf, Luterbacher) Institut und Museum für Geologie und Palàontolo- abundances of other microbiota encountered. For de- gie, Universitàt Tubingen, Sigwartstrasse 10, D-7400 Tubingen 1, Federal Republic of Germa- tailed biostratigraphic discussions of other fossil groups, ny; (Leckie, present address) Department of Geology and Geography, University of Massa- chusetts, Amherst, MA 01003. the reader is referred to chapters by Azéma and Jaffrezo 671 W. RIEGRAF, H. LUTERBACHER, R. M. LECKIE ë DC _J 6 780- ^P;r';Vl*>'1Of'^JJf*: Kimmeridgian 7 to Oxfordian 790- 8 34° N 800 -| 1 10 Bajocian to Callovian 11 1 late Pliensbachian 820- 12 830- 13 E 14 e a. 3 E 850-1 15 § o 3 860- 16 17 early Pliensbachian 870- )>- to latest late Sinemurian 18 880- 19 L 890- ^CT??1 A>l•v>•l^••I-^t^OI ^- 900- 21 b•"- d Limestone breccia 910 - 22 f~T-d Nodular limestone tác±J Dolomite lit Micritic limestone 920- 23 N"~1 Calcareous claystone F~-~-l Claystone 24 atn — &3 Mudstone Figure 2. Detail of the Jurassic section drilled at Site 547 and summary of foraminiferal age assignments for Hole 547B (after Bernoulli and Kàlin, this volume). (calpionellids); Bate et al. (ostracodes); Fenton (paly- nology); Kàlin and Bernoulli (Schizosphaerella); Renz (ammonites/aptychi); and Wiegand (nannofossils). The taxonomy of Jurassic foraminifers and their strati- graphic significance are still very much open to contra- dictory interpretations. Some authors (e.g., Barteinstein and Brand, 1937) attribute a wide range of intraspecific variability to some groups of Jurassic foraminifers, es- Sialic basement high Diapiric structure Normal fault pecially to the representatives of such genera as Nodosa- Figure 1. Regional setting of the Mazagan Plateau and sites drilled ria, Dentalina, Lenticulina, Pseudonodosaria, Lingulina, during Leg 79. and others. We may be accused of doing the contrary. However, we hope that the illustrations of the faunas will allow readers to reach their own conclusions on tax- 672 JURASSIC FORAMINIFERS FROM THE MAZAGAN PLATEAU CO Is c IS Φ c Φ CO o σ> Core-Section Assemblage CO 1 Φ CO (interval in cm) c dominated by Φ CO cot? Φ~co &CO to o CO ü Φ c c CO CO Φy <o CO "~ "θ Φ i i r r •― ε a e n Φ a r O u CO g (Trochol (Episton (Brizalin, (Spirillin Bulimin Nodosa Cassid Roberti Numbe Spirillin foramini Preserv Textula Europea I Very 9 47 11 6-4, 49-51 Nodosariids 1 (1%) 1 (1%) 69 c bad (1 3%) (68%) (16%) ε 14 142 7-2, 35-36 Bad Spirillinids 26 182 (1 4%) (8%) (78%) iridgi Spirillinids, 16 76 80 7-4, 135-137 Bad 9 (5%) 5 (3%) 186 ε Nodosariids (9%) (41%) (43%) 118 i 7.CC Bad Nodosariids 37 2 (1%) 175 1 (1%) 333 c (spirillinids) (11%) (53%) (35%) .55 o 8-1, 4-6 Bad Arenaceous 74 42 2 (2%) 118 '>< (nodosariids) (63%) (35%) O 9 2 8-1, 7-9 Bad (Nodosariids) 1 (8%) 12 (75%) (1 7%) Baj.— 125 25 10-3, 125-128 Bad Nodosariids 1 (1%) 1 (1%) 152 Callov. (82%) (16%) ?Dogger 11-1, 147-150 late 254 11 11,CC Bad Nodosariids 7 (2%) 7 (2%) 2(1%) 1 (1%) 282 Pliens.? (90%) (4%) 14.CC 39 15-1, 0-4 Good Nodosariids 1 (2%) 2 (5%) 1 (2%) 43 (93%) 50 n 17.CC Good Nodosariids 1 (2%) 51 ia (98%) h 54 18-1, 22-24 Good Nodosariids 2 (4%) 56 ibac (96%) j Very 18-2,5-7 Nodosariids 2 (1%) 225 4 (2%) 2 (1%) 233 good (97%) -Plien — 20-1, 126-129 Very Nodosariids 20 214 234 good (8%) (92%) irian i 34 50 20-2, 59-61 Very Nodosariids 85 (59%) 1 (1%) πem good (arenaceous) (40%) CO 21.CC Very 22 22-1,95-98 (Nodosariids) 22 good (100%) Very Nodosariids 35 36 105 22-2,55-57 176 good (arenac, milio.) (20%) (20%) (60%) 24-1, 139-141 Bad (only Ostracodes) ?1 ?1 c 24.CC, 10-12 Good (only Ostracodes) CO i tang 24.CC Bad (only Ostracodes) Φ c•• 25.CC 26.CC Figure 3. Foraminiferal assemblages recovered from Hole 547B. Note the good to excellent preservation of the Liassic faunas with nodosariids typically representing >90% of the assemblages. The Late Jurassic assemblages are characterized by poor preservation; spirillinids and nodosariids dominate. onomy as well as stratigraphic and paleoenvironmental olids and primitive arenaceous foraminifers which can- significance. The senior authors (W.R. and H.L.) are re- not be used for an age determination. sponsible for the detailed taxonomy and distribution ta- Core 23: No samples were examined from Core 23. bles. R.M.L. is responsible for the paleoenvironmental Core 22: The oldest well-preserved microfaunas are assessment of the Jurassic assemblages. from Core 22. In addition to echinoid spines and holo- thurian remains, the two samples from this core contain DISCUSSION OF THE MICROFAUNAS IN well-preserved foraminiferal assemblages composed of HOLE 547B primitive arenaceous foraminifers, miliolids and nodo- Core 24: The washed residues from Core 24 contain sariids. The assemblages are attributed a latest late Sine- only ostracodes and several, mostly indeterminate, mili- murian to early Pliensbachian age since they are in good 673 W. RIEGRAF, H. LUTERBACHER, R.
Recommended publications
  • Tasmanian Tertiary Foraminifera

    Tasmanian Tertiary Foraminifera

    Papers and Proceedings of the Royal Society of Tasmania, Volume 108 (ms. received 16.3.1973) TASMANIAN TERTIARY FORAMINIFERA Part 1. Textulariina, Miliolina, Nodosariacea by Patrick G. Quilty West Australian Petroleum Pty. Limited, Perth, W.A. (with four plates) ABSTRACT Foraminifera of the Suborders Textulariina and Miliolina and the Superfamily Nodosariacea are recorded from samples of all known Tasmanian marine Oligo-Miocene sections. Thirteen species of agglutinated foraminifera are identified specifically and one category is left in open nomenclature. Thirty species of porcellanous foraminifera (including CrenuZostomina banksi n. gen., n. sp.) are recorded and there are eight open categories. The Nodosariacea is represented by 63 identified species (including Lagena tasmaniae n. sp.) and 10 categories in open nomenclature. Information on each species includes original citation, synonymy of Australian identifications, remarks where necessary and occurrence and age in Tasmania. All identified forms are figured. INTRODUCTION AND ACKNOWLEDGEMENTS The stratigraphy of the Tasmanian Tertiary Marine succession has been reviewed by Quilty (1972). The results noted in that paper are based on foraminiferal studies conducted at the University of Tasmania. Localities, sample numbers etc., mentioned here are detailed further in Quilty (op. cit.) and this paper should be read in company with that paper. This paper is the first of a projected series of three papers documenting the Tasmanian Tertiary foraminifera. Classification adopted in these papers follows closely that proposed by Loeblich and Tappan (1964a) and reviewed by them (1964b) but differs in minor respects which will be indicated where necessary. Quilty (op. cit.) noted that the first record of Tasmanian Tertiary foraminifera was by Goddard and Jensen (1907).
  • Checklist, Assemblage Composition, and Biogeographic Assessment of Recent Benthic Foraminifera (Protista, Rhizaria) from São Vincente, Cape Verdes

    Checklist, Assemblage Composition, and Biogeographic Assessment of Recent Benthic Foraminifera (Protista, Rhizaria) from São Vincente, Cape Verdes

    Zootaxa 4731 (2): 151–192 ISSN 1175-5326 (print edition) https://www.mapress.com/j/zt/ Article ZOOTAXA Copyright © 2020 Magnolia Press ISSN 1175-5334 (online edition) https://doi.org/10.11646/zootaxa.4731.2.1 http://zoobank.org/urn:lsid:zoobank.org:pub:560FF002-DB8B-405A-8767-09628AEDBF04 Checklist, assemblage composition, and biogeographic assessment of Recent benthic foraminifera (Protista, Rhizaria) from São Vincente, Cape Verdes JOACHIM SCHÖNFELD1,3 & JULIA LÜBBERS2 1GEOMAR Helmholtz-Centre for Ocean Research Kiel, Wischhofstrasse 1-3, 24148 Kiel, Germany 2Institute of Geosciences, Christian-Albrechts-University, Ludewig-Meyn-Straße 14, 24118 Kiel, Germany 3Corresponding author. E-mail: [email protected] Abstract We describe for the first time subtropical intertidal foraminiferal assemblages from beach sands on São Vincente, Cape Verdes. Sixty-five benthic foraminiferal species were recognised, representing 47 genera, 31 families, and 8 superfamilies. Endemic species were not recognised. The new checklist largely extends an earlier record of nine benthic foraminiferal species from fossil carbonate sands on the island. Bolivina striatula, Rosalina vilardeboana and Millettiana milletti dominated the living (rose Bengal stained) fauna, while Elphidium crispum, Amphistegina gibbosa, Quinqueloculina seminulum, Ammonia tepida, Triloculina rotunda and Glabratella patelliformis dominated the dead assemblages. The living fauna lacks species typical for coarse-grained substrates. Instead, there were species that had a planktonic stage in their life cycle. The living fauna therefore received a substantial contribution of floating species and propagules that may have endured a long transport by surface ocean currents. The dead assemblages largely differed from the living fauna and contained redeposited tests deriving from a rhodolith-mollusc carbonate facies at <20 m water depth.
  • Ocean Drilling Program Scientific Results Volume

    Ocean Drilling Program Scientific Results Volume

    von Rad, U., Haq, B. U., et al., 1992 Proceedings of the Ocean Drilling Program, Scientific Results, Vol. 122 27. PALEONTOLOGICAL EVIDENCE FOR THE TRIASSIC AGE OF ROCKS DREDGED FROM THE NORTHERN EXMOUTH PLATEAU (TETHYAN FORAMINIFERS, ECHINODERMS, AND OSTRACODES)1 Edith Kristan-Tollmann2 and Franz Gramann3 ABSTRACT A very Late Triassic age can be proven by the microfaunal investigation of samples dredged from the northern Exmouth Plateau close to Ocean Drilling Program Site 764. The samples were previously regarded as Lower Jurassic sediments. The microfossils of known stratigraphic ranges show predominant Tethyan affinities. In samples dredged during Sonne cruise 8 (1979) from the northern slope of the Wombat Plateau, an Early Jurassic age is excluded by the presence of Frondicularia rhaetica, Berthelinella rhaetica, Fissobractites subsymmetrica, Ophioflabellum cristatum, Ophiacantha ? binitorulosa, Mostlerella n. sp., and Hasibuana asiatica. As a whole, a Rhaetian age is indicated. This age is also suggested by the foraminifers Coronipora austriaca and Variostoma sp., from determinations in limestone thin sections. Samples from Rig Seismic cruise 56 (1986), also from the northern slope of the Wombat Plateau, contain an assemblage of foraminifers known from the Triassic and observed in thin sections of carbonate rocks. They include Trocholina crassa, Trocholina laevis, Variostoma sp., and Variostoma coniforme. In combination with the lithofacies, the assemblage is characteristic for the Rhaetian Dachsteinkalk facies of the Northern Calcareous Alps of Austria. Thin sections from rocks dredged from Cygnet Canyon are rich in Glomospirella friedli and suggest a Norian to Rhaetian age. A thin section from the nearby Emu Escarpment contains sections of the Anomuran coprolite Octotriangulella septemtriangula Kristan-Tollmann, which is also present in upper Anisian rocks of Papua New Guinea.
  • Upper Devonian Deposits At. G6rno in the Holy Cross M Ts

    Upper Devonian Deposits At. G6rno in the Holy Cross M Ts

    .: .......; ': aCla' :" geologlca polonica Vot 31. No. 3-4 . :; ... KRlZYBZTOF MALKOWSKJ Upper Devonian deposits at . G6rno In the Holy Cross M ts ..,' '1 · ' . -.. .. '. ; .. ~ ~ : , . .. AlBS'IlRA.OT: The lith010gy af the Upper lDevionian >oarobona'te deposits of the· -e:nvlTons off Gor.no, alo.ni· wiih .thed.r oonc.doni Stratigra,phy ga.ve a ibaSis ror reco­ gniti'On af the Sedimen'ta'i!ion and pa:leogeography ·of the lI'egtcm wJ.1ftun .\the Upper'. Dev.onian ibasiJll of the Holy OrQSS Mts. The tecto.ni<: gaPs reoognized between 1he ' Givetian and FrasnJi.an. as well as !between the Devonian and Cal1borllil£erous depo­ sits, led ,t.o the .corredti,OiIl.s in the r~to.nalJ. tectonics.. Three S'pedi.es .()f oonodoms, viz. Polygnathus ancyrognathotde1LS Zieg1er, Schmidtognatnu.s aff. pietzneri Ziegler and Spath,ognathodu.s sannemanrrr;i treptv.s lZiegler, s·o far unknown Ifrom the De- vQ.IlJian 'Of the lHoIJ.y Oross Mts. halVe 'been described. :.: , " ,., iNrnoDuCTION .' .. ', .. :... ~ , . .;": ' ... ~.: .. .. .'. ~ne!a!l stra!ti.:gxaphicframework, based on the COI1J9Clonts, . was . pr-e- . sent~ Jor the Upper Devonlian d€lposits of the Holy croSs ,Mts by g.Z'Ui~ czewsJ9.:(19711).The sicoipe Olf the pre£'ent 'contrllbu1li.oJ:?. is to, apply .'the ~noqon't straltigraphy to a more detailletd recognition of !the p.rach~n~· , t~~lill.e. ·. of yar.nlo, lhaviingacomplex tectonic sb-uCi1nlre' an ith~ centx-aLpart ~ .t}},~,Holy Gross.iM'ts. I(se~ rr~-1i;g. 1; and IMallkowski 19U); ,Mosl; : ~SO far , avaia.ab)re~ dataon Ithe strat~phy a~fac1;€S deV1el~t , Of ~ Itll:e :P ,~N1OIl4aIl deposiltsin ~ larea .come from~IOOlalIwOTks .oov'~ring -e2d;ep.- .
  • Neogene Benthic Foraminifera from the Southern Bering Sea (IODP Expedition 323)

    Neogene Benthic Foraminifera from the Southern Bering Sea (IODP Expedition 323)

    Palaeontologia Electronica palaeo-electronica.org Neogene benthic foraminifera from the southern Bering Sea (IODP Expedition 323) Eiichi Setoyama and Michael A. Kaminski ABSTRACT This study describes a total of 95 calcareous benthic foraminiferal taxa from the Pliocene–Pleistocene recovered from IODP Hole U1341B in the southern Bering Sea with illustrations produced with an optical microscope and SEM. The benthic foramin- iferal assemblages are mostly dominated by calcareous taxa, and poorly diversified agglutinated forms are rare or often absent, comprising only minor components. Elon- gate, tapered, and/or flattened planispiral infaunal morphotypes are common or domi- nate the assemblages reflecting the persistent high-productivity and hypoxic conditions in the deep Bering Sea. Most of the species found in the cores are long-ranging, but we observe the extinction of several cylindrical forms that disappeared during the mid- Pleistocene Climatic Transition. Eiichi Setoyama. Earth Sciences Department, Research Group of Reservoir Characterization, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia current address: Energy & Geoscience Institute, University of Utah, 423 Wakara Way, Suite 300, Salt Lake City, Utah 84108, USA [email protected] Michael A. Kaminski. Earth Sciences Department, Research Group of Reservoir Characterization, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia [email protected] Keywords: Bering Sea; biostratigraphy; foraminifera; palaeoceanography; Pliocene-Pleistocene; taxonomy Submission: 19 February 2014. Acceptance: 1 July 2015 INTRODUCTION the foraminiferal assemblages and palaeoceano- graphic proxies in continuously-cored sections in The Bering Sea is a large, permanently the deeper, southern part of the Bering Sea, with hypoxic deep basin that has a well-developed oxy- an aim toward assessing the effects of climate gen-minimum zone (Takahashi et al., 2011).
  • Universidade Federal De Santa Catarina, Como Requisito Para a Obtenção Do Título De Mestre Em Geografia

    Universidade Federal De Santa Catarina, Como Requisito Para a Obtenção Do Título De Mestre Em Geografia

    Daniela Lemos Polla FORAMINÍFEROS BENTÔNICOS RECENTES APLICADOS A CARACTERIZAÇÃO AMBIENTAL DA PLATAFORMA CONTINENTAL ADJACENTE A FOZ DO RIO PARAÍBA DO SUL (RJ) Dissertação apresentada ao Programa de Pós-Graduação em Geografia da Universidade Federal de Santa Catarina, como requisito para a obtenção do título de Mestre em Geografia. Orientadora: Dra Carla Bonetti Coorientadora: Dra Patrícia Eichler Florianópolis 2016 Ficha de identificação da obra elaborada pelo autor, através do Programa de Geração Automática da Biblioteca Universitária da UFSC. Polla, Daniela Lemos FORAMINÍFEROS BENTÔNICOS RECENTES APLICADOS A CARACTERIZAÇÃO AMBIENTAL DA PLATAFORMA CONTINENTAL ADJACENTE A FOZ DO RIO PARAÍBA DO SUL (RJ)/ Daniela Lemos Polla; orientadora, Carla Bonetti; coorientadora, Patrícia Eichler- Florianópolis, SC, 2016. 155p. Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas. Programa de Pós-Graduação em Geografia. Inclui referências 1. Geografia. 2. Foraminíferos Bentônicos. 3. Bacia de Campos. 4. Taxonomia. 5. Caracterização. I. Bonetti, Carla. II. Eichler, Patrícia. III. Universidade Federal de Santa Catarina. Programa de Pós-Graduação em Geografia. IV. Título. Daniela Lemos Polla FORAMINÍFEROS BENTÔNICOS RECENTES APLICADOS A CARACTERIZAÇÃO AMBIENTAL DA PLATAFORMA CONTINENTAL ADJACENTE A FOZ DO RIO PARAÍBA DO SUL (RJ) Esta Dissertação foi julgada adequada para obtenção do Título de Mestre e aprovada em sua forma final pelo Programa de Pós-Graduação em Geografia. Florianópolis, 15 de Abril de 2016. ________________________ Prof. Dr. Aloysio Marthins de Araújo Júnior Coordenador do Curso Banca Examinadora: Prof.ª Dr.ª Carla Bonetti Prof.ª Dr.ª Sibelle T. Disaró Orientadora – UFSC Membro Externo - UFPR Prof.ª Dr.ª Patrícia Eichler Prof.ª Dr.ª Alessandra Fonseca Coorientadora UFRN-UNISUL Membro Interno - UFSC __________________________ Prof.
  • An Upper Mississippian Echinoderm Microfauna from the Genicera Formation of Northern León (Carboniferous, Cantabrian Mountains, N Spain)

    An Upper Mississippian Echinoderm Microfauna from the Genicera Formation of Northern León (Carboniferous, Cantabrian Mountains, N Spain)

    SPANISH JOURNAL OF PALAEONTOLOGY An Upper Mississippian echinoderm microfauna from the Genicera Formation of northern León (Carboniferous, Cantabrian Mountains, N Spain) Joachim PABST* & Hans-Georg HERBIG Institut für Geologie und Mineralogie, Universität zu Köln. Zülpicher Str. 49a, D-50674 Köln. [email protected]; [email protected] * Corresponding author Pabst, J. & Herbig, H. 2020. An Upper Mississippian echinoderm microfauna from the Genicera Formation of northern León (Carboniferous, Cantabrian Mountains, N Spain). [Microfauna de equinodermos del Misisipiense Superior de la Formación Genicera del norte de León (Carbonífero, Cordillera Cantábrica, N de España)]. Spanish Journal of Palaeontology, 35 (1), 47-76. Manuscript received 30 January 2019 https://doi.org/10.7203/sjp.35.1.17116 Manuscript accepted 12 November 2019 © Sociedad Española de Paleontología ISSN 2255-0550 ABSTRACT RESUMEN For the fi rst time an echinoderm microfauna is recorded from Por primera vez se describe una microfauna de equinodermos the cephalopod limestone facies (‘griotte facies’) of the lower de las calizas nodulosas con cefalópodos (“griotte facies”) Carboniferous (Mississippian) Genicera Fm. (Alba Fm.). de la Formación Genicera (Formación Alba) del Carbonífero The formation is widespread in the Cantabrian Mountains inferior (Misisipiense). Si bien esta formación es de in NW Spain, but the ossicles are from some sections in considerable extensión en la Cordillera Cantábrica en el the surroundings of the Bernesga valley in northern León. norte de España, los oscículos descritos solo proceden de They have been derived from insoluble acetic acid residues unas secciones de los alrededores del valle de Bernesga al from samples of the upper and especially of the uppermost norte de León.
  • Checklist, Assemblage Composition, and Biogeographic Assessment of Recent Benthic Foraminifera (Protista, Rhizaria) from São Vincente, Cape Verdes

    Checklist, Assemblage Composition, and Biogeographic Assessment of Recent Benthic Foraminifera (Protista, Rhizaria) from São Vincente, Cape Verdes

    Zootaxa 4731 (2): 151–192 ISSN 1175-5326 (print edition) https://www.mapress.com/j/zt/ Article ZOOTAXA Copyright © 2020 Magnolia Press ISSN 1175-5334 (online edition) https://doi.org/10.11646/zootaxa.4731.2.1 http://zoobank.org/urn:lsid:zoobank.org:pub:560FF002-DB8B-405A-8767-09628AEDBF04 Checklist, assemblage composition, and biogeographic assessment of Recent benthic foraminifera (Protista, Rhizaria) from São Vincente, Cape Verdes JOACHIM SCHÖNFELD1,3 & JULIA LÜBBERS2 1GEOMAR Helmholtz-Centre for Ocean Research Kiel, Wischhofstrasse 1-3, 24148 Kiel, Germany 2Institute of Geosciences, Christian-Albrechts-University, Ludewig-Meyn-Straße 14, 24118 Kiel, Germany 3Corresponding author. E-mail: [email protected] Abstract We describe for the first time subtropical intertidal foraminiferal assemblages from beach sands on São Vincente, Cape Verdes. Sixty-five benthic foraminiferal species were recognised, representing 47 genera, 31 families, and 8 superfamilies. Endemic species were not recognised. The new checklist largely extends an earlier record of nine benthic foraminiferal species from fossil carbonate sands on the island. Bolivina striatula, Rosalina vilardeboana and Millettiana milletti dominated the living (rose Bengal stained) fauna, while Elphidium crispum, Amphistegina gibbosa, Quinqueloculina seminulum, Ammonia tepida, Triloculina rotunda and Glabratella patelliformis dominated the dead assemblages. The living fauna lacks species typical for coarse-grained substrates. Instead, there were species that had a planktonic stage in their life cycle. The living fauna therefore received a substantial contribution of floating species and propagules that may have endured a long transport by surface ocean currents. The dead assemblages largely differed from the living fauna and contained redeposited tests deriving from a rhodolith-mollusc carbonate facies at <20 m water depth.
  • Beche-De-Mer

    Beche-De-Mer

    ISSN 1025-4943 Secretariat of the Pacific Community BECHE-DE-MER Number 13 — July 2000 INFORMATION BULLETIN Editor and group coordinator: Chantal Conand, Université de La Réunion, Laboratoire de biologie marine, 97715 Saint-Denis Cedex, La Réunion, France. [Fax: +262 938166; E-mail: [email protected]]. Production: Information Section, Marine Resources Division, SPC, B.P. D5, 98848 Noumea Cedex, New Caledonia. [Fax: +687 263818; E-mail: [email protected]; Website: http://www.spc.int/coastfish]. Produced with financial assistance from France and Australia. Editorial Dear Readers, Inside this issue This is the 13th issue of the Bulletin. I would like to take this op- portunity to thank all those who have contributed to it and ask Aspects of sea cucumber that you take an active role in its improvement, as many of you broodstock management have already indicated that the Bulletin is useful to you. by A.D. Morgan p. 2 Is the current presentation by section, i.e. 1) New Information, Athyonidium chilensis 2) Correspondence, 3) Publications, satisfactory?: by C. Ravest Presa p. 9 • Which section should be given more space? Sea cucumber fishery in • In the ‘New Information’ section, would you have new infor- the Philippines mation for the columns on ‘In situ spawning observations’ by S. Schoppe p. 10 and ‘Asexual reproduction through fission observations’? Are these columns suitable? Conservation of • The ‘Aquaculture’ column has been continued thanks to the aspidochirotid holothurians in collaboration of S. Battaglene from ICLARM. We regret the the littoral waters of Kenya closure of the Coastal Aquaculture Centre (CAC) Solomon by Y.
  • Palaeoenvironmental Interpretation of Echinoderm Assemblages from Bathonian Ore-Bearing Clays at Gnaszyn (Kraków-Silesia Homocline, Poland)

    Palaeoenvironmental Interpretation of Echinoderm Assemblages from Bathonian Ore-Bearing Clays at Gnaszyn (Kraków-Silesia Homocline, Poland)

    Acta Geologica Polonica, Vol. 62 (2012), No. 3, pp. 351–366 DOI: 10.2478/v10263-012-0019-6 Palaeoenvironmental interpretation of echinoderm assemblages from Bathonian ore-bearing clays at Gnaszyn (Kraków-Silesia Homocline, Poland) ANDRZEJ BOCZAROWSKI Faculty of Earth Sciences, University of Silesia, Będzińska 60, PL-41-200 Sosnowiec, Poland. E-mail: [email protected] ABSTRACT: Boczarowski A. 2012. Palaeoenvironmental interpretation of echinoderm assemblages from Bathonian ore-bear- ing clays at Gnaszyn (Kraków-Silesia Homocline, Poland). Acta Geologica Polonica, 62 (3), 351–366. Warszawa. This paper presents the results of an investigation into the variability of echinoderm assemblages from Bathonian ore-bearing clays from Gnaszyn. Remains of Crinoidea, Asteroidea, Ophiuroidea, Echinoidea, and Holothuroidea have been studied from 38 rock samples. The most common echinoderms represented are the crinoids Balanocri- nus berchteni and Chariocrinus andreae and a few species of the holothurian genera Priscopedatus, Calclamna, Staurocaudina, Eocaudina, Achistrum, Theelia and Hemisphaeranthos. The echinoderms from Gnaszyn show var- ious life strategies: benthic or epibenthic forms, sessile sestonophages (Crinoidea), motile macrophages (Asteroidea) and detritivores (Asteroidea, Ophiuroidea, Echinoidea), infaunal and epifaunal detritus feeders, sediment feeders or rake-feeders (Holothuroidea). Their presence suggests well oxygenated and presumably relatively cold bottom marine waters. The parts of the Gnaszyn section around concretion horizons and characterized by the ubiquitous occurrence of the holothurian Theelia and echinoids were deposited during phases of optimal living conditions with sufficient influx of plant detritus and good oxygenation of the sea bottom. These parts commonly host echin- oderm associations dominated by crinoid remains, which occasionally are still articulated (or disarticulated but re- maining intact) – this points to a quiet environment with normal oxygenation of the bottom waters but anaerobic/dysaerobic conditions in the sediment.
  • Paleoambiental Interpretations of Middle Pleistocene with Benthic

    Paleoambiental Interpretations of Middle Pleistocene with Benthic

    UNIVERSIDADE DO VALE DO RIO DOS SINOS - UNISINOS UNIDADE ACADÊMICA DE GRADUAÇÃO CURSO DE CIÊNCIAS BIOLÓGICAS - BACHARELADO MICAEL LUÃ BERGAMASCHI INTERPRETAÇÕES PALEOAMBIENTAIS DO PLEISTOCENO MÉDIO COM BASE EM FORAMINÍFEROS BENTÔNICOS DA BACIA DE SANTOS – BRASIL SÃO LEOPOLDO 2012 Micael Luã Bergamaschi INTERPRETAÇÕES PALEOAMBIENTAIS DO PLEISTOCENO MÉDIO COM BASE EM FORAMINÍFEROS BENTÔNICOS DA BACIA DE SANTOS – BRASIL Trabalho de Conclusão de Curso apresentado como requisito parcial para a obtenção do título de Bacharel em Ciências Biológicas, pelo Curso de Ciências Biológicas da Universidade do Vale do Rio dos Sinos - UNISINOS Orientador: Prof. Dr. Itamar Ivo Leipnitz São Leopoldo 2012 Aos meus pais, Cláudia e Fernando. Presentes nos momentos de eclipse e luz em minha vida. AGRADECIMENTOS Ao finalizar este estudo e concluir mais uma etapa em minha vida, gostaria de agradecer àqueles que colaboraram de diversas e significativas maneiras no desenvolvimento e evolução deste trabalho: Ao meu orientador, Itamar Ivo Leipnitz, que sempre me incentivou, apoiou e abriu portas na minha jovem caminhada ao longo destes anos que venho me dedicando aos estudos com foraminíferos. Aos pesquisadores e amigos, Carolina Jardim Leão e Fabricio Ferreira, pela oportunidade, ideias e ensinamentos passados, contribuindo para a realização deste trabalho e motivação para muitos outros que estão por vir. À Petrobras por ter cedido as amostras para execução deste trabalho. Aos colegas do Instituto Tecnológico de Micropaleontologia (ITT Fossil – Unisinos), pelo suporte técnico de fundamental importância. Pelas risadas e diversos momentos de descontração. Aos amigos da Biologia, pelos momentos de diversão e discussões biológicas, que de forma direta ou indireta contribuíram para a conclusão deste trabalho.
  • Systematic Paleontology and Distribution of Late Eocene Benthic

    Systematic Paleontology and Distribution of Late Eocene Benthic

    UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY Systematic paleontology and distribution of late Eocene benthic forap.inifers from northwestern Oregon and southwestern Washington by Kristin McDougall Open-File Report 81-109 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature Systematic paleontology and distribution of late Eocene benthic foraminifers from northwestern Oregon and southwestern Washington by Kristin McDougall Introduction The purpose of this report is to document the data used in "Paleoeco- logical evaluation of late Eocene biostratigraphic zonations of the Pacific coast of North America" (McDougall, 1980). Two forms of documentation are presented: 1) systematic paleontology, and 2) fauna! distribution charts. Sample localities and stratigraphic information were given in an earlier report (McDougall, 1979). Since consistent application of zoological nomenclature and species concepts were important in resolving biostratigraphic problems considerable attention has been given to the systematic paleontology. Classification of the benthic foraminifers follows that of Loeblich and Tappan (1964). Classifi­ cation of the planktic foraminifers is after Poore (personal commun., 1976). Synonymies given in the following section include reference to the original description and to pertinent West Coast studies. Illustrated specimens and assemblage slides are on file at the U.S. National Museum (USNM numbers are referenced). Slides borrowed from oil companies have been returned to the respective companies. The occurrence of specimens is listed at the end of the species discussion and the reader is referred to the appropriate faunal distribution chart and species' number on the chart. The occurrence and abundance of species within the sections is indicated by the faunal distribution charts.