Strontium and oxygen isotope data for DSDP Hole 44-390A and ODP Leg 171 holes
Differences in regional responses to climate fluctuations are well documented on short time scales (e.g., El Niño-Southern Oscillation), but with the exception of latitudinal temperature gradients, regional patterns are seldom considered in discussions of ancient greenhouse climates. Contrary to the...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.722600 2024-09-15T18:06:54+00:00 Strontium and oxygen isotope data for DSDP Hole 44-390A and ODP Leg 171 holes MacLeod, Kenneth G Huber, Brian T Isaza-Londoño, Carolina MEDIAN LATITUDE: 30.064498 * MEDIAN LONGITUDE: -76.324658 * SOUTH-BOUND LATITUDE: 29.951300 * WEST-BOUND LONGITUDE: -76.626800 * NORTH-BOUND LATITUDE: 30.142300 * EAST-BOUND LONGITUDE: -76.112110 * DATE/TIME START: 1975-08-29T00:00:00 * DATE/TIME END: 1997-02-08T19:30:00 2005 application/zip, 6 datasets https://doi.pangaea.de/10.1594/PANGAEA.722600 https://doi.org/10.1594/PANGAEA.722600 en eng PANGAEA GSA data repository - Age model - accompanying manuscript [dataset]. ftp://rock.geosociety.org/pub/reposit/2005/2005084.pdf https://doi.pangaea.de/10.1594/PANGAEA.722600 https://doi.org/10.1594/PANGAEA.722600 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: MacLeod, Kenneth G; Huber, Brian T; Isaza-Londoño, Carolina (2005): North Atlantic warming during global cooling at the end of the Cretaceous. Geology, 33(6), 437-440, https://doi.org/10.1130/G21466.1 171-1049C 171-1050C 171-1052E 44-390A Blake Nose North Atlantic Ocean Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg171B Leg44 Ocean Drilling Program ODP dataset publication series 2005 ftpangaea https://doi.org/10.1594/PANGAEA.72260010.1130/G21466.1 2024-08-21T00:02:25Z Differences in regional responses to climate fluctuations are well documented on short time scales (e.g., El Niño-Southern Oscillation), but with the exception of latitudinal temperature gradients, regional patterns are seldom considered in discussions of ancient greenhouse climates. Contrary to the expectation of global warming or global cooling implicit in most treatments of climate evolution over millions of years, this paper shows that the North Atlantic warmed by as much as 6°C (1.5% decrease in d18O values of planktic foraminifera) during the Maastrichtian global cooling interval. We suggest that warming was the result of the importation of heat from the South Atlantic. Decreasing North Atlantic d18O values are also associated with increasing gradients in planktic d13C values, suggesting increasing surface-water stratification and a correlated strengthening of the North Atlantic Polar Front. If correct, this conclusion predicts arctic cooling during the late Maastrichtian. Beyond implications for the Maastrichtian, these data demonstrate that climate does not behave as if there is a simple global thermostat, even on geologic time scales. Other/Unknown Material Foraminifera* Global warming North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-76.626800,-76.112110,30.142300,29.951300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
171-1049C 171-1050C 171-1052E 44-390A Blake Nose North Atlantic Ocean Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg171B Leg44 Ocean Drilling Program ODP |
spellingShingle |
171-1049C 171-1050C 171-1052E 44-390A Blake Nose North Atlantic Ocean Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg171B Leg44 Ocean Drilling Program ODP MacLeod, Kenneth G Huber, Brian T Isaza-Londoño, Carolina Strontium and oxygen isotope data for DSDP Hole 44-390A and ODP Leg 171 holes |
topic_facet |
171-1049C 171-1050C 171-1052E 44-390A Blake Nose North Atlantic Ocean Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg171B Leg44 Ocean Drilling Program ODP |
description |
Differences in regional responses to climate fluctuations are well documented on short time scales (e.g., El Niño-Southern Oscillation), but with the exception of latitudinal temperature gradients, regional patterns are seldom considered in discussions of ancient greenhouse climates. Contrary to the expectation of global warming or global cooling implicit in most treatments of climate evolution over millions of years, this paper shows that the North Atlantic warmed by as much as 6°C (1.5% decrease in d18O values of planktic foraminifera) during the Maastrichtian global cooling interval. We suggest that warming was the result of the importation of heat from the South Atlantic. Decreasing North Atlantic d18O values are also associated with increasing gradients in planktic d13C values, suggesting increasing surface-water stratification and a correlated strengthening of the North Atlantic Polar Front. If correct, this conclusion predicts arctic cooling during the late Maastrichtian. Beyond implications for the Maastrichtian, these data demonstrate that climate does not behave as if there is a simple global thermostat, even on geologic time scales. |
format |
Other/Unknown Material |
author |
MacLeod, Kenneth G Huber, Brian T Isaza-Londoño, Carolina |
author_facet |
MacLeod, Kenneth G Huber, Brian T Isaza-Londoño, Carolina |
author_sort |
MacLeod, Kenneth G |
title |
Strontium and oxygen isotope data for DSDP Hole 44-390A and ODP Leg 171 holes |
title_short |
Strontium and oxygen isotope data for DSDP Hole 44-390A and ODP Leg 171 holes |
title_full |
Strontium and oxygen isotope data for DSDP Hole 44-390A and ODP Leg 171 holes |
title_fullStr |
Strontium and oxygen isotope data for DSDP Hole 44-390A and ODP Leg 171 holes |
title_full_unstemmed |
Strontium and oxygen isotope data for DSDP Hole 44-390A and ODP Leg 171 holes |
title_sort |
strontium and oxygen isotope data for dsdp hole 44-390a and odp leg 171 holes |
publisher |
PANGAEA |
publishDate |
2005 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.722600 https://doi.org/10.1594/PANGAEA.722600 |
op_coverage |
MEDIAN LATITUDE: 30.064498 * MEDIAN LONGITUDE: -76.324658 * SOUTH-BOUND LATITUDE: 29.951300 * WEST-BOUND LONGITUDE: -76.626800 * NORTH-BOUND LATITUDE: 30.142300 * EAST-BOUND LONGITUDE: -76.112110 * DATE/TIME START: 1975-08-29T00:00:00 * DATE/TIME END: 1997-02-08T19:30:00 |
long_lat |
ENVELOPE(-76.626800,-76.112110,30.142300,29.951300) |
genre |
Foraminifera* Global warming North Atlantic |
genre_facet |
Foraminifera* Global warming North Atlantic |
op_source |
Supplement to: MacLeod, Kenneth G; Huber, Brian T; Isaza-Londoño, Carolina (2005): North Atlantic warming during global cooling at the end of the Cretaceous. Geology, 33(6), 437-440, https://doi.org/10.1130/G21466.1 |
op_relation |
GSA data repository - Age model - accompanying manuscript [dataset]. ftp://rock.geosociety.org/pub/reposit/2005/2005084.pdf https://doi.pangaea.de/10.1594/PANGAEA.722600 https://doi.org/10.1594/PANGAEA.722600 |
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.72260010.1130/G21466.1 |
_version_ |
1810444246618996736 |