High-resolution iridium, delta C-13, delta O-18, foraminifera and nannofossil profiles across the latest Paleocene benthic extinction event at Zumaya, Spain
In the expanded upper Paleocene-lower Eocene section (approximate to 30 m of Zone P5 sediments) at Zumaya, northern Spain, the highest occurrence of many late Paleocene deep-sea benthic foraminifera species (approximate to 40% extinction), coincides with a transition from marl to calcite-free clay....
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier science bv
1997
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Online Access: | https://lirias.kuleuven.be/handle/123456789/269930 http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=DOISource&SrcApp=PRODUCT_NAME&KeyAID=10.1016%2FS0031-0182%2897%2900024-2&DestApp=DOI&SrcAppSID=APP_SID&SrcJTitle=WURS_TITLE https://doi.org/10.1016/S0031-0182(97)00024-2 https://lirias.kuleuven.be/bitstream/123456789/269930/3//Schmitz_et_al_1997_p1%28PETM-Zumaya_P3%29.pdf https://lirias.kuleuven.be/bitstream/123456789/269930/1//schmitz+et+al+1997%28Zumaya%29.pdf |
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ftunivleuven:oai:lirias.kuleuven.be:123456789/269930 2023-05-15T17:37:05+02:00 High-resolution iridium, delta C-13, delta O-18, foraminifera and nannofossil profiles across the latest Paleocene benthic extinction event at Zumaya, Spain Schmitz, B Asaro, F Molina, E Monechi, S vonSalis, K Speijer, Robert 1997-09 1595071 bytes application/pdf https://lirias.kuleuven.be/handle/123456789/269930 http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=DOISource&SrcApp=PRODUCT_NAME&KeyAID=10.1016%2FS0031-0182%2897%2900024-2&DestApp=DOI&SrcAppSID=APP_SID&SrcJTitle=WURS_TITLE https://doi.org/10.1016/S0031-0182(97)00024-2 https://lirias.kuleuven.be/bitstream/123456789/269930/3//Schmitz_et_al_1997_p1%28PETM-Zumaya_P3%29.pdf https://lirias.kuleuven.be/bitstream/123456789/269930/1//schmitz+et+al+1997%28Zumaya%29.pdf en eng Elsevier science bv Palaeogeography palaeoclimatology palaeoecology vol:133 issue:1-2 pages:49-68 https://lirias.kuleuven.be/handle/123456789/269930 0031-0182 http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=DOISource&SrcApp=PRODUCT_NAME&KeyAID=10.1016%2FS0031-0182%2897%2900024-2&DestApp=DOI&SrcAppSID=APP_SID&SrcJTitle=WURS_TITLE doi:10.1016/S0031-0182(97)00024-2 https://lirias.kuleuven.be/bitstream/123456789/269930/3//Schmitz_et_al_1997_p1%28PETM-Zumaya_P3%29.pdf https://lirias.kuleuven.be/bitstream/123456789/269930/1//schmitz+et+al+1997%28Zumaya%29.pdf 113962;intranet 213006;public iridium stable isotopes upper paleocene benthic taxa foraminifera mass extinctions carbon-isotope stratigraphy tertiary boundary clays eocene boundary north-atlantic south china anomalies mississippian paleogene caravaca oklahoma Article IT 213006;Article 113962;Article 1997 ftunivleuven https://doi.org/10.1016/S0031-0182(97)00024-2 2015-12-22T16:01:00Z In the expanded upper Paleocene-lower Eocene section (approximate to 30 m of Zone P5 sediments) at Zumaya, northern Spain, the highest occurrence of many late Paleocene deep-sea benthic foraminifera species (approximate to 40% extinction), coincides with a transition from marl to calcite-free clay. Our high-resolution studies (chemical elements, delta(13)C, delta(18)O, calcareous nannofossils, planktic and benthic foraminifera) show that below the marl-clay transition there is a 40-50 cm thick interval (corresponding to 10-20 kyr) containing a detailed record of a gradual succession of faunal and geochemical events culminating in the benthic extinctions. Planktic foraminiferal and nannofossil changes (e.g., the onset of demise in Fasciculithus genus) occur a few meters below the marl-clay transition. In the limestone 50 cm below the base of the clay, a prominent glauconite maximum indicates that sea-floor oxygenation suddenly decreased. Glauconite continues to be common until the onset of clay deposition. A whole-rock negative delta(13)C Shift (1.6 parts per thousand), most likely reflecting an original sea-water trend, is gradually developed over the 40 cm of greenish brown marls immediately below the clay. Ar the base of these marls there is a small, significant iridium anomaly of 133 ppt Ir compared with an average background of 38 ppt. In the marls the demise of the Fasciculithus species accelerates, Gavelinella beccariiformis becomes extinct, and the abundance of Acarinina species begins to increase. The superjacent 4 m of clay is devoid of original calcite in its lower part and has a low calcareous content higher up. At calcareous levels in the clay an unusual planktic foraminifera fauna occurs, dominated by Acarinina species. When marl deposition returns, delta(13)C gradually increases and then stabilizes at values about 0.5 parts per thousand lower than before the isotopic excursion. The delta(13)C excursion spans in total 5 m, probably corresponding to 200-400 kyr. The fasciculiths disappear shortly after the stabilization of delta(13)C. status: published Article in Journal/Newspaper North Atlantic KU Leuven: Lirias Palaeogeography, Palaeoclimatology, Palaeoecology 133 1-2 49 68 |
institution |
Open Polar |
collection |
KU Leuven: Lirias |
op_collection_id |
ftunivleuven |
language |
English |
topic |
iridium stable isotopes upper paleocene benthic taxa foraminifera mass extinctions carbon-isotope stratigraphy tertiary boundary clays eocene boundary north-atlantic south china anomalies mississippian paleogene caravaca oklahoma |
spellingShingle |
iridium stable isotopes upper paleocene benthic taxa foraminifera mass extinctions carbon-isotope stratigraphy tertiary boundary clays eocene boundary north-atlantic south china anomalies mississippian paleogene caravaca oklahoma Schmitz, B Asaro, F Molina, E Monechi, S vonSalis, K Speijer, Robert High-resolution iridium, delta C-13, delta O-18, foraminifera and nannofossil profiles across the latest Paleocene benthic extinction event at Zumaya, Spain |
topic_facet |
iridium stable isotopes upper paleocene benthic taxa foraminifera mass extinctions carbon-isotope stratigraphy tertiary boundary clays eocene boundary north-atlantic south china anomalies mississippian paleogene caravaca oklahoma |
description |
In the expanded upper Paleocene-lower Eocene section (approximate to 30 m of Zone P5 sediments) at Zumaya, northern Spain, the highest occurrence of many late Paleocene deep-sea benthic foraminifera species (approximate to 40% extinction), coincides with a transition from marl to calcite-free clay. Our high-resolution studies (chemical elements, delta(13)C, delta(18)O, calcareous nannofossils, planktic and benthic foraminifera) show that below the marl-clay transition there is a 40-50 cm thick interval (corresponding to 10-20 kyr) containing a detailed record of a gradual succession of faunal and geochemical events culminating in the benthic extinctions. Planktic foraminiferal and nannofossil changes (e.g., the onset of demise in Fasciculithus genus) occur a few meters below the marl-clay transition. In the limestone 50 cm below the base of the clay, a prominent glauconite maximum indicates that sea-floor oxygenation suddenly decreased. Glauconite continues to be common until the onset of clay deposition. A whole-rock negative delta(13)C Shift (1.6 parts per thousand), most likely reflecting an original sea-water trend, is gradually developed over the 40 cm of greenish brown marls immediately below the clay. Ar the base of these marls there is a small, significant iridium anomaly of 133 ppt Ir compared with an average background of 38 ppt. In the marls the demise of the Fasciculithus species accelerates, Gavelinella beccariiformis becomes extinct, and the abundance of Acarinina species begins to increase. The superjacent 4 m of clay is devoid of original calcite in its lower part and has a low calcareous content higher up. At calcareous levels in the clay an unusual planktic foraminifera fauna occurs, dominated by Acarinina species. When marl deposition returns, delta(13)C gradually increases and then stabilizes at values about 0.5 parts per thousand lower than before the isotopic excursion. The delta(13)C excursion spans in total 5 m, probably corresponding to 200-400 kyr. The fasciculiths disappear shortly after the stabilization of delta(13)C. status: published |
format |
Article in Journal/Newspaper |
author |
Schmitz, B Asaro, F Molina, E Monechi, S vonSalis, K Speijer, Robert |
author_facet |
Schmitz, B Asaro, F Molina, E Monechi, S vonSalis, K Speijer, Robert |
author_sort |
Schmitz, B |
title |
High-resolution iridium, delta C-13, delta O-18, foraminifera and nannofossil profiles across the latest Paleocene benthic extinction event at Zumaya, Spain |
title_short |
High-resolution iridium, delta C-13, delta O-18, foraminifera and nannofossil profiles across the latest Paleocene benthic extinction event at Zumaya, Spain |
title_full |
High-resolution iridium, delta C-13, delta O-18, foraminifera and nannofossil profiles across the latest Paleocene benthic extinction event at Zumaya, Spain |
title_fullStr |
High-resolution iridium, delta C-13, delta O-18, foraminifera and nannofossil profiles across the latest Paleocene benthic extinction event at Zumaya, Spain |
title_full_unstemmed |
High-resolution iridium, delta C-13, delta O-18, foraminifera and nannofossil profiles across the latest Paleocene benthic extinction event at Zumaya, Spain |
title_sort |
high-resolution iridium, delta c-13, delta o-18, foraminifera and nannofossil profiles across the latest paleocene benthic extinction event at zumaya, spain |
publisher |
Elsevier science bv |
publishDate |
1997 |
url |
https://lirias.kuleuven.be/handle/123456789/269930 http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=DOISource&SrcApp=PRODUCT_NAME&KeyAID=10.1016%2FS0031-0182%2897%2900024-2&DestApp=DOI&SrcAppSID=APP_SID&SrcJTitle=WURS_TITLE https://doi.org/10.1016/S0031-0182(97)00024-2 https://lirias.kuleuven.be/bitstream/123456789/269930/3//Schmitz_et_al_1997_p1%28PETM-Zumaya_P3%29.pdf https://lirias.kuleuven.be/bitstream/123456789/269930/1//schmitz+et+al+1997%28Zumaya%29.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Palaeogeography palaeoclimatology palaeoecology vol:133 issue:1-2 pages:49-68 https://lirias.kuleuven.be/handle/123456789/269930 0031-0182 http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=DOISource&SrcApp=PRODUCT_NAME&KeyAID=10.1016%2FS0031-0182%2897%2900024-2&DestApp=DOI&SrcAppSID=APP_SID&SrcJTitle=WURS_TITLE doi:10.1016/S0031-0182(97)00024-2 https://lirias.kuleuven.be/bitstream/123456789/269930/3//Schmitz_et_al_1997_p1%28PETM-Zumaya_P3%29.pdf https://lirias.kuleuven.be/bitstream/123456789/269930/1//schmitz+et+al+1997%28Zumaya%29.pdf |
op_rights |
113962;intranet 213006;public |
op_doi |
https://doi.org/10.1016/S0031-0182(97)00024-2 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
133 |
container_issue |
1-2 |
container_start_page |
49 |
op_container_end_page |
68 |
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1766136810099965952 |