Contusotruncana contusa abundances and morphotypes in the cretaceous mid-latitude South Atlantic, supplement to: Kucera, Michal; Malmgren, Bjorn (1998): Terminal Cretaceous warming event in the mid-latitude South Atlantic Ocean: evidence from poleward migration of Contusotruncana contusa (planktonic foraminifera) morphotypes. Palaeogeography, Palaeoclimatology, Palaeoecology, 138(1-4), 1-15
Spatial and temporal patterns in test size and shape (test conicity and spiral roundness) and absolute abundance (accumulation rate) of the planktonic foraminifer Contusotruncana contusa were studied in the South Atlantic Ocean (DSDP sites 356, 516, 525 and 527) during an interval corresponding to t...
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1998
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ftdatacite:10.1594/pangaea.704985 2023-05-15T18:00:58+02:00 Contusotruncana contusa abundances and morphotypes in the cretaceous mid-latitude South Atlantic, supplement to: Kucera, Michal; Malmgren, Bjorn (1998): Terminal Cretaceous warming event in the mid-latitude South Atlantic Ocean: evidence from poleward migration of Contusotruncana contusa (planktonic foraminifera) morphotypes. Palaeogeography, Palaeoclimatology, Palaeoecology, 138(1-4), 1-15 Kucera, Michal Malmgren, Bjorn 1998 application/zip https://dx.doi.org/10.1594/pangaea.704985 https://doi.pangaea.de/10.1594/PANGAEA.704985 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/s0031-0182(97)00124-7 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Drilling/drill rig Leg39 Leg43 Leg72 Leg74 Glomar Challenger Deep Sea Drilling Project DSDP Collection article Supplementary Collection of Datasets 1998 ftdatacite https://doi.org/10.1594/pangaea.704985 https://doi.org/10.1016/s0031-0182(97)00124-7 2021-11-05T12:55:41Z Spatial and temporal patterns in test size and shape (test conicity and spiral roundness) and absolute abundance (accumulation rate) of the planktonic foraminifer Contusotruncana contusa were studied in the South Atlantic Ocean (DSDP sites 356, 516, 525 and 527) during an interval corresponding to the last 800 kyr of the Cretaceous. The variation in absolute abundance of C. contusa was characterised by alternating periods of high and low abundance; some of these periods were traceable across the entire mid-latitude South Atlantic Ocean. While the mean spiral roundness did not show any interpretable patterns, a sudden increase of the mean test size and mean test conicity occurred between 65.3 and 65.2 Ma (based on linear interpolation within the Cretaceous part of Subchron C29R) at all sites studied, indicating a poleward migration followed by rapid withdrawal of the low-latitude C. contusa morphotypes from the mid-latitude South Atlantic Ocean. We suggest that this event was caused by a short period of surface-water warming in the southern mid-latitudes corresponding to the brief high-latitude warming event and associated faunal migrations in the Boreal and Austral realms. Article in Journal/Newspaper Planktonic foraminifera South Atlantic Ocean DataCite Metadata Store (German National Library of Science and Technology) Austral Malmgren ENVELOPE(-66.117,-66.117,-65.750,-65.750) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Drilling/drill rig Leg39 Leg43 Leg72 Leg74 Glomar Challenger Deep Sea Drilling Project DSDP |
spellingShingle |
Drilling/drill rig Leg39 Leg43 Leg72 Leg74 Glomar Challenger Deep Sea Drilling Project DSDP Kucera, Michal Malmgren, Bjorn Contusotruncana contusa abundances and morphotypes in the cretaceous mid-latitude South Atlantic, supplement to: Kucera, Michal; Malmgren, Bjorn (1998): Terminal Cretaceous warming event in the mid-latitude South Atlantic Ocean: evidence from poleward migration of Contusotruncana contusa (planktonic foraminifera) morphotypes. Palaeogeography, Palaeoclimatology, Palaeoecology, 138(1-4), 1-15 |
topic_facet |
Drilling/drill rig Leg39 Leg43 Leg72 Leg74 Glomar Challenger Deep Sea Drilling Project DSDP |
description |
Spatial and temporal patterns in test size and shape (test conicity and spiral roundness) and absolute abundance (accumulation rate) of the planktonic foraminifer Contusotruncana contusa were studied in the South Atlantic Ocean (DSDP sites 356, 516, 525 and 527) during an interval corresponding to the last 800 kyr of the Cretaceous. The variation in absolute abundance of C. contusa was characterised by alternating periods of high and low abundance; some of these periods were traceable across the entire mid-latitude South Atlantic Ocean. While the mean spiral roundness did not show any interpretable patterns, a sudden increase of the mean test size and mean test conicity occurred between 65.3 and 65.2 Ma (based on linear interpolation within the Cretaceous part of Subchron C29R) at all sites studied, indicating a poleward migration followed by rapid withdrawal of the low-latitude C. contusa morphotypes from the mid-latitude South Atlantic Ocean. We suggest that this event was caused by a short period of surface-water warming in the southern mid-latitudes corresponding to the brief high-latitude warming event and associated faunal migrations in the Boreal and Austral realms. |
format |
Article in Journal/Newspaper |
author |
Kucera, Michal Malmgren, Bjorn |
author_facet |
Kucera, Michal Malmgren, Bjorn |
author_sort |
Kucera, Michal |
title |
Contusotruncana contusa abundances and morphotypes in the cretaceous mid-latitude South Atlantic, supplement to: Kucera, Michal; Malmgren, Bjorn (1998): Terminal Cretaceous warming event in the mid-latitude South Atlantic Ocean: evidence from poleward migration of Contusotruncana contusa (planktonic foraminifera) morphotypes. Palaeogeography, Palaeoclimatology, Palaeoecology, 138(1-4), 1-15 |
title_short |
Contusotruncana contusa abundances and morphotypes in the cretaceous mid-latitude South Atlantic, supplement to: Kucera, Michal; Malmgren, Bjorn (1998): Terminal Cretaceous warming event in the mid-latitude South Atlantic Ocean: evidence from poleward migration of Contusotruncana contusa (planktonic foraminifera) morphotypes. Palaeogeography, Palaeoclimatology, Palaeoecology, 138(1-4), 1-15 |
title_full |
Contusotruncana contusa abundances and morphotypes in the cretaceous mid-latitude South Atlantic, supplement to: Kucera, Michal; Malmgren, Bjorn (1998): Terminal Cretaceous warming event in the mid-latitude South Atlantic Ocean: evidence from poleward migration of Contusotruncana contusa (planktonic foraminifera) morphotypes. Palaeogeography, Palaeoclimatology, Palaeoecology, 138(1-4), 1-15 |
title_fullStr |
Contusotruncana contusa abundances and morphotypes in the cretaceous mid-latitude South Atlantic, supplement to: Kucera, Michal; Malmgren, Bjorn (1998): Terminal Cretaceous warming event in the mid-latitude South Atlantic Ocean: evidence from poleward migration of Contusotruncana contusa (planktonic foraminifera) morphotypes. Palaeogeography, Palaeoclimatology, Palaeoecology, 138(1-4), 1-15 |
title_full_unstemmed |
Contusotruncana contusa abundances and morphotypes in the cretaceous mid-latitude South Atlantic, supplement to: Kucera, Michal; Malmgren, Bjorn (1998): Terminal Cretaceous warming event in the mid-latitude South Atlantic Ocean: evidence from poleward migration of Contusotruncana contusa (planktonic foraminifera) morphotypes. Palaeogeography, Palaeoclimatology, Palaeoecology, 138(1-4), 1-15 |
title_sort |
contusotruncana contusa abundances and morphotypes in the cretaceous mid-latitude south atlantic, supplement to: kucera, michal; malmgren, bjorn (1998): terminal cretaceous warming event in the mid-latitude south atlantic ocean: evidence from poleward migration of contusotruncana contusa (planktonic foraminifera) morphotypes. palaeogeography, palaeoclimatology, palaeoecology, 138(1-4), 1-15 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1998 |
url |
https://dx.doi.org/10.1594/pangaea.704985 https://doi.pangaea.de/10.1594/PANGAEA.704985 |
long_lat |
ENVELOPE(-66.117,-66.117,-65.750,-65.750) |
geographic |
Austral Malmgren |
geographic_facet |
Austral Malmgren |
genre |
Planktonic foraminifera South Atlantic Ocean |
genre_facet |
Planktonic foraminifera South Atlantic Ocean |
op_relation |
https://dx.doi.org/10.1016/s0031-0182(97)00124-7 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.704985 https://doi.org/10.1016/s0031-0182(97)00124-7 |
_version_ |
1766170268095479808 |