Early Cretaceous palynomorphes from ODP Hole 113-692B
Detailed descriptions of in situ ?Valanginian to Albian Antarctic palynofloras are presented from Weddell Sea claystones with high percentages of organic matter ("black shales") and intercalated volcanic ash layers. The claystones were recovered from two sites (ODP Leg 113, Sites 692 and 6...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.746424 2024-09-15T17:48:05+00:00 Early Cretaceous palynomorphes from ODP Hole 113-692B Mohr, Barbara A R LATITUDE: -70.724000 * LONGITUDE: -13.819900 * DATE/TIME START: 1987-01-26T21:30:00 * DATE/TIME END: 1987-01-29T19:45:00 1990 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.746424 https://doi.org/10.1594/PANGAEA.746424 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.746424 https://doi.org/10.1594/PANGAEA.746424 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Mohr, Barbara A R (1990): Early Cretaceous palynomorphs from ODP Sites 692 and 693, the Weddell Sea, Antarctica. In: Barker, PF, Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 449-464, https://doi.org/10.2973/odp.proc.sr.113.207.1990 113-692B DRILL Drilling/drill rig Joides Resolution Leg113 Ocean Drilling Program ODP Weddell Sea dataset publication series 1990 ftpangaea https://doi.org/10.1594/PANGAEA.74642410.2973/odp.proc.sr.113.207.1990 2024-07-24T02:31:20Z Detailed descriptions of in situ ?Valanginian to Albian Antarctic palynofloras are presented from Weddell Sea claystones with high percentages of organic matter ("black shales") and intercalated volcanic ash layers. The claystones were recovered from two sites (ODP Leg 113, Sites 692 and 693) on the continental margin of Dronning Maud Land. Palynological investigations of these Cretaceous sediments revealed a ?Valanginian-Hauterivian age for the Site 692 sediments and an Aptian-Albian age for Site 693. This paper is focused on the palynomorphs of Site 692. Miospores, dinoflagellate cysts, and acritarchs are listed and compared with early Cretaceous microfloras from the Antarctic Peninsula, Australia, and South America. The dinocyst assemblage of Site 692 seems to be very similar in composition to an assemblage from the South Shetlands (?Valanginian-Hauterivian-Barremian). It also agrees well with associations described from early Early Cretaceous sequences from the Perth Basin, southwestern Australia. According to the Australian miospore zonation schemes, the sporomorph flora from Site 692 belongs to the South Australian Foraminisporis wonthaggiensis Zone (early Valanginian to Hauterivian) or the lower part of the dinocyst Muderongia Superzone (Valanginian to Hauterivian). Other/Unknown Material Antarc* Antarctic Antarctic Peninsula Dronning Maud Land Weddell Sea PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-13.819900,-13.819900,-70.724000,-70.724000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
113-692B DRILL Drilling/drill rig Joides Resolution Leg113 Ocean Drilling Program ODP Weddell Sea |
spellingShingle |
113-692B DRILL Drilling/drill rig Joides Resolution Leg113 Ocean Drilling Program ODP Weddell Sea Mohr, Barbara A R Early Cretaceous palynomorphes from ODP Hole 113-692B |
topic_facet |
113-692B DRILL Drilling/drill rig Joides Resolution Leg113 Ocean Drilling Program ODP Weddell Sea |
description |
Detailed descriptions of in situ ?Valanginian to Albian Antarctic palynofloras are presented from Weddell Sea claystones with high percentages of organic matter ("black shales") and intercalated volcanic ash layers. The claystones were recovered from two sites (ODP Leg 113, Sites 692 and 693) on the continental margin of Dronning Maud Land. Palynological investigations of these Cretaceous sediments revealed a ?Valanginian-Hauterivian age for the Site 692 sediments and an Aptian-Albian age for Site 693. This paper is focused on the palynomorphs of Site 692. Miospores, dinoflagellate cysts, and acritarchs are listed and compared with early Cretaceous microfloras from the Antarctic Peninsula, Australia, and South America. The dinocyst assemblage of Site 692 seems to be very similar in composition to an assemblage from the South Shetlands (?Valanginian-Hauterivian-Barremian). It also agrees well with associations described from early Early Cretaceous sequences from the Perth Basin, southwestern Australia. According to the Australian miospore zonation schemes, the sporomorph flora from Site 692 belongs to the South Australian Foraminisporis wonthaggiensis Zone (early Valanginian to Hauterivian) or the lower part of the dinocyst Muderongia Superzone (Valanginian to Hauterivian). |
format |
Other/Unknown Material |
author |
Mohr, Barbara A R |
author_facet |
Mohr, Barbara A R |
author_sort |
Mohr, Barbara A R |
title |
Early Cretaceous palynomorphes from ODP Hole 113-692B |
title_short |
Early Cretaceous palynomorphes from ODP Hole 113-692B |
title_full |
Early Cretaceous palynomorphes from ODP Hole 113-692B |
title_fullStr |
Early Cretaceous palynomorphes from ODP Hole 113-692B |
title_full_unstemmed |
Early Cretaceous palynomorphes from ODP Hole 113-692B |
title_sort |
early cretaceous palynomorphes from odp hole 113-692b |
publisher |
PANGAEA |
publishDate |
1990 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.746424 https://doi.org/10.1594/PANGAEA.746424 |
op_coverage |
LATITUDE: -70.724000 * LONGITUDE: -13.819900 * DATE/TIME START: 1987-01-26T21:30:00 * DATE/TIME END: 1987-01-29T19:45:00 |
long_lat |
ENVELOPE(-13.819900,-13.819900,-70.724000,-70.724000) |
genre |
Antarc* Antarctic Antarctic Peninsula Dronning Maud Land Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Dronning Maud Land Weddell Sea |
op_source |
Supplement to: Mohr, Barbara A R (1990): Early Cretaceous palynomorphs from ODP Sites 692 and 693, the Weddell Sea, Antarctica. In: Barker, PF, Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 449-464, https://doi.org/10.2973/odp.proc.sr.113.207.1990 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.746424 https://doi.org/10.1594/PANGAEA.746424 |
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.74642410.2973/odp.proc.sr.113.207.1990 |
_version_ |
1810289012587364352 |