Geochemical composition of ODP Site 210-1276 shales
During Ocean Drilling Program Leg 210, a greatly expanded sedimentary sequence of continuous Cretaceous black shales was recovered at Site 1276. This section corresponds to the Hatteras Formation, which has been documented widely in the North Atlantic Ocean. The cored sequence extends from the lower...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.776751 2024-09-09T19:56:34+00:00 Geochemical composition of ODP Site 210-1276 shales Arnaboldi, Michela Meyers, Philip A LATITUDE: 45.405330 * LONGITUDE: -44.785830 * DATE/TIME START: 2003-02-09T16:20:00 * DATE/TIME END: 2003-07-16T08:44:00 2006 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.776751 https://doi.org/10.1594/PANGAEA.776751 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.776751 https://doi.org/10.1594/PANGAEA.776751 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Arnaboldi, Michela; Meyers, Philip A (2006): Data report: Multiproxy geochemical characterization of OAE-related black shales at Site 1276, Newfoundland Basin. In: Tucholke, BE; Sibuet, J-C; Klaus, A (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 210, 1-16, https://doi.org/10.2973/odp.proc.sr.210.102.2006 210-1276A DRILL Drilling/drill rig Joides Resolution Leg210 North Atlantic Ocean Ocean Drilling Program ODP dataset publication series 2006 ftpangaea https://doi.org/10.1594/PANGAEA.77675110.2973/odp.proc.sr.210.102.2006 2024-08-21T00:02:25Z During Ocean Drilling Program Leg 210, a greatly expanded sedimentary sequence of continuous Cretaceous black shales was recovered at Site 1276. This section corresponds to the Hatteras Formation, which has been documented widely in the North Atlantic Ocean. The cored sequence extends from the lowermost Albian, or possibly uppermost Aptian, to the Cenomanian/Turonian boundary and is characterized by numerous gravity-flow deposits and sporadic, finely laminated black shales. The sequence also includes several sedimentary intervals with high total organic carbon (TOC) contents, in several instances of probable marine origin that may record oceanic anoxic events (OAE). These layers might correspond to the Cenomanian-Turonian OAE 2; the mid-Cenomanian event; and OAE 1b, 1c, and 1d in the Albian. In addition, another interval with geochemical characteristics similar to OAE-type layers was recognized in the Albian, although it does not correspond to any of the known OAEs. This study investigates the origin of the organic matter contained within these black shale intervals using TOC and CaCO3 contents, Corg/Ntot ratios, organic carbon and nitrogen isotopes, trace metal composition, and rock-eval analyses. Most of these black shale intervals, especially OAE 2 and 1b, are characterized by low 15N values (<0) commonly observed in mid-Cretaceous black shales, which seem to reflect the presence of an altered nitrogen cycle with rates of nitrogen fixation significantly higher than in the modern ocean. Other/Unknown Material North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-44.785830,-44.785830,45.405330,45.405330) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
210-1276A DRILL Drilling/drill rig Joides Resolution Leg210 North Atlantic Ocean Ocean Drilling Program ODP |
spellingShingle |
210-1276A DRILL Drilling/drill rig Joides Resolution Leg210 North Atlantic Ocean Ocean Drilling Program ODP Arnaboldi, Michela Meyers, Philip A Geochemical composition of ODP Site 210-1276 shales |
topic_facet |
210-1276A DRILL Drilling/drill rig Joides Resolution Leg210 North Atlantic Ocean Ocean Drilling Program ODP |
description |
During Ocean Drilling Program Leg 210, a greatly expanded sedimentary sequence of continuous Cretaceous black shales was recovered at Site 1276. This section corresponds to the Hatteras Formation, which has been documented widely in the North Atlantic Ocean. The cored sequence extends from the lowermost Albian, or possibly uppermost Aptian, to the Cenomanian/Turonian boundary and is characterized by numerous gravity-flow deposits and sporadic, finely laminated black shales. The sequence also includes several sedimentary intervals with high total organic carbon (TOC) contents, in several instances of probable marine origin that may record oceanic anoxic events (OAE). These layers might correspond to the Cenomanian-Turonian OAE 2; the mid-Cenomanian event; and OAE 1b, 1c, and 1d in the Albian. In addition, another interval with geochemical characteristics similar to OAE-type layers was recognized in the Albian, although it does not correspond to any of the known OAEs. This study investigates the origin of the organic matter contained within these black shale intervals using TOC and CaCO3 contents, Corg/Ntot ratios, organic carbon and nitrogen isotopes, trace metal composition, and rock-eval analyses. Most of these black shale intervals, especially OAE 2 and 1b, are characterized by low 15N values (<0) commonly observed in mid-Cretaceous black shales, which seem to reflect the presence of an altered nitrogen cycle with rates of nitrogen fixation significantly higher than in the modern ocean. |
format |
Other/Unknown Material |
author |
Arnaboldi, Michela Meyers, Philip A |
author_facet |
Arnaboldi, Michela Meyers, Philip A |
author_sort |
Arnaboldi, Michela |
title |
Geochemical composition of ODP Site 210-1276 shales |
title_short |
Geochemical composition of ODP Site 210-1276 shales |
title_full |
Geochemical composition of ODP Site 210-1276 shales |
title_fullStr |
Geochemical composition of ODP Site 210-1276 shales |
title_full_unstemmed |
Geochemical composition of ODP Site 210-1276 shales |
title_sort |
geochemical composition of odp site 210-1276 shales |
publisher |
PANGAEA |
publishDate |
2006 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.776751 https://doi.org/10.1594/PANGAEA.776751 |
op_coverage |
LATITUDE: 45.405330 * LONGITUDE: -44.785830 * DATE/TIME START: 2003-02-09T16:20:00 * DATE/TIME END: 2003-07-16T08:44:00 |
long_lat |
ENVELOPE(-44.785830,-44.785830,45.405330,45.405330) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Arnaboldi, Michela; Meyers, Philip A (2006): Data report: Multiproxy geochemical characterization of OAE-related black shales at Site 1276, Newfoundland Basin. In: Tucholke, BE; Sibuet, J-C; Klaus, A (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 210, 1-16, https://doi.org/10.2973/odp.proc.sr.210.102.2006 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.776751 https://doi.org/10.1594/PANGAEA.776751 |
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.77675110.2973/odp.proc.sr.210.102.2006 |
_version_ |
1809927320348131328 |