The Cenomanian/Turronian Boundary Event at ODP Hole 103-641A
Drilling at ODP Site 641 (on the western margin of Galicia Bank, off northwestern Spain) revealed a thin, but pronounced, interval of black shale and gray-green claystone. Our high-resolution study combines the sedimentology, micropaleontology (palynomorphs and others), organic and inorganic geochem...
Main Authors: | , , , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
1988
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.743476 https://doi.org/10.1594/PANGAEA.743476 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.743476 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.743476 2023-05-15T17:30:41+02:00 The Cenomanian/Turronian Boundary Event at ODP Hole 103-641A Thurow, Juergen W Moullade, Michel Brumsack, Hans-Jürgen Masure, Edwige Taugourdeau-Lantz, Josette Dunham, Keith W MEDIAN LATITUDE: 41.898929 * MEDIAN LONGITUDE: -11.868114 * SOUTH-BOUND LATITUDE: 40.960000 * WEST-BOUND LONGITUDE: -12.181700 * NORTH-BOUND LATITUDE: 42.155000 * EAST-BOUND LONGITUDE: -10.718300 * DATE/TIME START: 1976-04-14T00:00:00 * DATE/TIME END: 1985-06-15T13:30:00 1988-07-28 application/zip, 7 datasets https://doi.pangaea.de/10.1594/PANGAEA.743476 https://doi.org/10.1594/PANGAEA.743476 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.743476 https://doi.org/10.1594/PANGAEA.743476 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Thurow, Juergen W; Moullade, Michel; Brumsack, Hans-Jürgen; Masure, Edwige; Taugourdeau-Lantz, Josette; Dunham, Keith W (1988): The Cenomanian/Turonian Boundary Event (CTBE) at Hole 641A, ODP Leg 103 (Compared with the CTBE interval at Site 398). In: Boillot, G; Winterer, EL; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 103, 587-634, https://doi.org/10.2973/odp.proc.sr.103.172.1988 103-641A 103-641C 47-398D Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg103 Leg47 North Atlantic/SEAMOUNT North Atlantic Ocean Ocean Drilling Program ODP Dataset 1988 ftpangaea https://doi.org/10.1594/PANGAEA.743476 https://doi.org/10.2973/odp.proc.sr.103.172.1988 2023-01-20T07:31:51Z Drilling at ODP Site 641 (on the western margin of Galicia Bank, off northwestern Spain) revealed a thin, but pronounced, interval of black shale and gray-green claystone. Our high-resolution study combines the sedimentology, micropaleontology (palynomorphs and others), organic and inorganic geochemistry, and isotopic values of this layer to demonstrate the distinct nature of the sediment and prove that the sequence represents the local sedimentary expression of the global Cenomanian/Turonian Oceanic Anoxic Event (OAE) of Schlanger and Jenkyns (1976), Arthur and Schlanger (1979), and Jenkyns (1980), also called the Cenomanian/Turonian Boundary Event (CTBE). The most striking evidence is that the strong positive d13C excursion characterizing the CTBE sequences in shallow areas can be traced into a pronounced deep-sea expression, thus providing a good stratigraphic marker for the CTBE in various paleosettings. The isotopic excursion at Site 641 coincides with an extremely enriched trace metal content, with values that were previously unknown for the Cretaceous Atlantic. Similar to other CTBE occurrences, the organic carbon content is high (up to 11%) and the organic matter is of dominantly marine origin (kerogen type II). The bulk mineralogy of the CTBE sediments does not differ significantly from the general trend of Cretaceous North Atlantic sediments (dominance of smectite and zeolite with minor amounts of illite and scattered palygorskite, kaolinite, and chlorite); thus, no evidence for either increased volcanic activity nor a drastic climatic change in the borderlands was found. Results from Site 641 are compared with the CTBE section found at Site 398, DSDP Leg 47B (Vigo Seamount at the southern end of the Galicia Bank). Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-12.181700,-10.718300,42.155000,40.960000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
103-641A 103-641C 47-398D Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg103 Leg47 North Atlantic/SEAMOUNT North Atlantic Ocean Ocean Drilling Program ODP |
spellingShingle |
103-641A 103-641C 47-398D Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg103 Leg47 North Atlantic/SEAMOUNT North Atlantic Ocean Ocean Drilling Program ODP Thurow, Juergen W Moullade, Michel Brumsack, Hans-Jürgen Masure, Edwige Taugourdeau-Lantz, Josette Dunham, Keith W The Cenomanian/Turronian Boundary Event at ODP Hole 103-641A |
topic_facet |
103-641A 103-641C 47-398D Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg103 Leg47 North Atlantic/SEAMOUNT North Atlantic Ocean Ocean Drilling Program ODP |
description |
Drilling at ODP Site 641 (on the western margin of Galicia Bank, off northwestern Spain) revealed a thin, but pronounced, interval of black shale and gray-green claystone. Our high-resolution study combines the sedimentology, micropaleontology (palynomorphs and others), organic and inorganic geochemistry, and isotopic values of this layer to demonstrate the distinct nature of the sediment and prove that the sequence represents the local sedimentary expression of the global Cenomanian/Turonian Oceanic Anoxic Event (OAE) of Schlanger and Jenkyns (1976), Arthur and Schlanger (1979), and Jenkyns (1980), also called the Cenomanian/Turonian Boundary Event (CTBE). The most striking evidence is that the strong positive d13C excursion characterizing the CTBE sequences in shallow areas can be traced into a pronounced deep-sea expression, thus providing a good stratigraphic marker for the CTBE in various paleosettings. The isotopic excursion at Site 641 coincides with an extremely enriched trace metal content, with values that were previously unknown for the Cretaceous Atlantic. Similar to other CTBE occurrences, the organic carbon content is high (up to 11%) and the organic matter is of dominantly marine origin (kerogen type II). The bulk mineralogy of the CTBE sediments does not differ significantly from the general trend of Cretaceous North Atlantic sediments (dominance of smectite and zeolite with minor amounts of illite and scattered palygorskite, kaolinite, and chlorite); thus, no evidence for either increased volcanic activity nor a drastic climatic change in the borderlands was found. Results from Site 641 are compared with the CTBE section found at Site 398, DSDP Leg 47B (Vigo Seamount at the southern end of the Galicia Bank). |
format |
Dataset |
author |
Thurow, Juergen W Moullade, Michel Brumsack, Hans-Jürgen Masure, Edwige Taugourdeau-Lantz, Josette Dunham, Keith W |
author_facet |
Thurow, Juergen W Moullade, Michel Brumsack, Hans-Jürgen Masure, Edwige Taugourdeau-Lantz, Josette Dunham, Keith W |
author_sort |
Thurow, Juergen W |
title |
The Cenomanian/Turronian Boundary Event at ODP Hole 103-641A |
title_short |
The Cenomanian/Turronian Boundary Event at ODP Hole 103-641A |
title_full |
The Cenomanian/Turronian Boundary Event at ODP Hole 103-641A |
title_fullStr |
The Cenomanian/Turronian Boundary Event at ODP Hole 103-641A |
title_full_unstemmed |
The Cenomanian/Turronian Boundary Event at ODP Hole 103-641A |
title_sort |
cenomanian/turronian boundary event at odp hole 103-641a |
publisher |
PANGAEA |
publishDate |
1988 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.743476 https://doi.org/10.1594/PANGAEA.743476 |
op_coverage |
MEDIAN LATITUDE: 41.898929 * MEDIAN LONGITUDE: -11.868114 * SOUTH-BOUND LATITUDE: 40.960000 * WEST-BOUND LONGITUDE: -12.181700 * NORTH-BOUND LATITUDE: 42.155000 * EAST-BOUND LONGITUDE: -10.718300 * DATE/TIME START: 1976-04-14T00:00:00 * DATE/TIME END: 1985-06-15T13:30:00 |
long_lat |
ENVELOPE(-12.181700,-10.718300,42.155000,40.960000) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Thurow, Juergen W; Moullade, Michel; Brumsack, Hans-Jürgen; Masure, Edwige; Taugourdeau-Lantz, Josette; Dunham, Keith W (1988): The Cenomanian/Turonian Boundary Event (CTBE) at Hole 641A, ODP Leg 103 (Compared with the CTBE interval at Site 398). In: Boillot, G; Winterer, EL; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 103, 587-634, https://doi.org/10.2973/odp.proc.sr.103.172.1988 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.743476 https://doi.org/10.1594/PANGAEA.743476 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.743476 https://doi.org/10.2973/odp.proc.sr.103.172.1988 |
_version_ |
1766127570655379456 |