Lower Cretaceous nannofossils of ODP Holes 113-682B and 113-693A
Organic-rich, moderately to sparsely nannofossiliferous Lower Cretaceous claystones ("black shales") were cored at two Ocean Drilling Program Leg 113 sites on the continental slope of East Antarctica off Dronning Maud Land. A 39 m section at Site 692 yielded a Neocomian assemblage of limit...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.746421 2024-09-15T17:48:05+00:00 Lower Cretaceous nannofossils of ODP Holes 113-682B and 113-693A Mutterlose, Jörg Wise, Sherwood W MEDIAN LATITUDE: -70.796000 * MEDIAN LONGITUDE: -14.322300 * SOUTH-BOUND LATITUDE: -70.832000 * WEST-BOUND LONGITUDE: -14.573500 * NORTH-BOUND LATITUDE: -70.724000 * EAST-BOUND LONGITUDE: -13.819900 * DATE/TIME START: 1987-01-26T21:30:00 * DATE/TIME END: 1987-02-05T03:15:00 1990 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.746421 https://doi.org/10.1594/PANGAEA.746421 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.746421 https://doi.org/10.1594/PANGAEA.746421 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Mutterlose, Jörg; Wise, Sherwood W (1990): Lower Cretaceous nannofossil biostratigraphy of ODP Leg 113 Holes 692B and 693A, continental slope off East Antarctica, Weddell Sea. In: Barker, PF, Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 325-351, https://doi.org/10.2973/odp.proc.sr.113.143.1990 113-692B 113-693A DRILL Drilling/drill rig Joides Resolution Leg113 Ocean Drilling Program ODP Weddell Sea dataset publication series 1990 ftpangaea https://doi.org/10.1594/PANGAEA.74642110.2973/odp.proc.sr.113.143.1990 2024-07-24T02:31:20Z Organic-rich, moderately to sparsely nannofossiliferous Lower Cretaceous claystones ("black shales") were cored at two Ocean Drilling Program Leg 113 sites on the continental slope of East Antarctica off Dronning Maud Land. A 39 m section at Site 692 yielded a Neocomian assemblage of limited diversity with rare Cyclagelosphaera deflandrei, Diadorhombus rectus, and Cruciellipsis cuvillieri, and is probably Valanginian in age. A 70-m section at Site 693 is assigned to the Rhagodiscus angustus Zone (late Aptian-early Albian in age). The latter zone is represented at DSDP sites on the Falkland Plateau, but equivalents to the Neocomian section are absent there, probably due to a disconformity. Watznaueria barnesae is the dominant species at both ODP sites, but it shares dominance with Repagulum parvidentatum at Site 693, where they total 70%-90% of the assemblage; their dominance is attributed to a paleogeographic setting within a restricted basin rather than to postdepositional dissolution of other species. The evolutionary development of this restricted basin and its eventual ventilation in early Albian times is discussed in terms of the regional stratigraphy and the breakup and dispersal of southwestern Gondwanaland. One new species, Corollithion covingtonii, is described. Other/Unknown Material Antarc* Antarctica Dronning Maud Land East Antarctica Weddell Sea PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-14.573500,-13.819900,-70.724000,-70.832000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
113-692B 113-693A DRILL Drilling/drill rig Joides Resolution Leg113 Ocean Drilling Program ODP Weddell Sea |
spellingShingle |
113-692B 113-693A DRILL Drilling/drill rig Joides Resolution Leg113 Ocean Drilling Program ODP Weddell Sea Mutterlose, Jörg Wise, Sherwood W Lower Cretaceous nannofossils of ODP Holes 113-682B and 113-693A |
topic_facet |
113-692B 113-693A DRILL Drilling/drill rig Joides Resolution Leg113 Ocean Drilling Program ODP Weddell Sea |
description |
Organic-rich, moderately to sparsely nannofossiliferous Lower Cretaceous claystones ("black shales") were cored at two Ocean Drilling Program Leg 113 sites on the continental slope of East Antarctica off Dronning Maud Land. A 39 m section at Site 692 yielded a Neocomian assemblage of limited diversity with rare Cyclagelosphaera deflandrei, Diadorhombus rectus, and Cruciellipsis cuvillieri, and is probably Valanginian in age. A 70-m section at Site 693 is assigned to the Rhagodiscus angustus Zone (late Aptian-early Albian in age). The latter zone is represented at DSDP sites on the Falkland Plateau, but equivalents to the Neocomian section are absent there, probably due to a disconformity. Watznaueria barnesae is the dominant species at both ODP sites, but it shares dominance with Repagulum parvidentatum at Site 693, where they total 70%-90% of the assemblage; their dominance is attributed to a paleogeographic setting within a restricted basin rather than to postdepositional dissolution of other species. The evolutionary development of this restricted basin and its eventual ventilation in early Albian times is discussed in terms of the regional stratigraphy and the breakup and dispersal of southwestern Gondwanaland. One new species, Corollithion covingtonii, is described. |
format |
Other/Unknown Material |
author |
Mutterlose, Jörg Wise, Sherwood W |
author_facet |
Mutterlose, Jörg Wise, Sherwood W |
author_sort |
Mutterlose, Jörg |
title |
Lower Cretaceous nannofossils of ODP Holes 113-682B and 113-693A |
title_short |
Lower Cretaceous nannofossils of ODP Holes 113-682B and 113-693A |
title_full |
Lower Cretaceous nannofossils of ODP Holes 113-682B and 113-693A |
title_fullStr |
Lower Cretaceous nannofossils of ODP Holes 113-682B and 113-693A |
title_full_unstemmed |
Lower Cretaceous nannofossils of ODP Holes 113-682B and 113-693A |
title_sort |
lower cretaceous nannofossils of odp holes 113-682b and 113-693a |
publisher |
PANGAEA |
publishDate |
1990 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.746421 https://doi.org/10.1594/PANGAEA.746421 |
op_coverage |
MEDIAN LATITUDE: -70.796000 * MEDIAN LONGITUDE: -14.322300 * SOUTH-BOUND LATITUDE: -70.832000 * WEST-BOUND LONGITUDE: -14.573500 * NORTH-BOUND LATITUDE: -70.724000 * EAST-BOUND LONGITUDE: -13.819900 * DATE/TIME START: 1987-01-26T21:30:00 * DATE/TIME END: 1987-02-05T03:15:00 |
long_lat |
ENVELOPE(-14.573500,-13.819900,-70.724000,-70.832000) |
genre |
Antarc* Antarctica Dronning Maud Land East Antarctica Weddell Sea |
genre_facet |
Antarc* Antarctica Dronning Maud Land East Antarctica Weddell Sea |
op_source |
Supplement to: Mutterlose, Jörg; Wise, Sherwood W (1990): Lower Cretaceous nannofossil biostratigraphy of ODP Leg 113 Holes 692B and 693A, continental slope off East Antarctica, Weddell Sea. In: Barker, PF, Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 325-351, https://doi.org/10.2973/odp.proc.sr.113.143.1990 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.746421 https://doi.org/10.1594/PANGAEA.746421 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.74642110.2973/odp.proc.sr.113.143.1990 |
_version_ |
1810289012396523520 |