Isotopic measurements of 3 foraminifer species from ODP Hole 171-1050C
Analysis of 944 single specimens of three species of late Maastrichtian planktonic foraminifera (Racemiguembelina fructicosa, Contusotruncana contusa, and Rugoglobigerina rugosa) from 38 samples spanning the last 3 Myr of the Cretaceous shows consistent isotopic trends through time, consistent isoto...
Main Authors: | , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2006
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.742669 https://doi.org/10.1594/PANGAEA.742669 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.742669 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.742669 2023-05-15T17:31:33+02:00 Isotopic measurements of 3 foraminifer species from ODP Hole 171-1050C Isaza-Londoño, Carolina MacLeod, Kenneth G Huber, Brian T LATITUDE: 30.099910 * LONGITUDE: -76.234970 * DATE/TIME START: 1997-02-08T19:30:00 * DATE/TIME END: 1997-02-08T19:30:00 * MINIMUM DEPTH, sediment/rock: 408.75 m * MAXIMUM DEPTH, sediment/rock: 455.35 m 2006-06-30 text/tab-separated-values, 3776 data points https://doi.pangaea.de/10.1594/PANGAEA.742669 https://doi.org/10.1594/PANGAEA.742669 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.742669 https://doi.org/10.1594/PANGAEA.742669 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Isaza-Londoño, Carolina; MacLeod, Kenneth G; Huber, Brian T (2006): Maastrichtian North Atlantic warming, increasing stratification, and foraminiferal paleobiology at three timescales. Paleoceanography, 21(1), PA1012, https://doi.org/10.1029/2004PA001130 171-1050C Blake Nose North Atlantic Ocean Contusotruncana contusa δ13C δ18O DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Isotope ratio mass spectrometry Joides Resolution Leg171B Ocean Drilling Program ODP Racemiguembelina fructicosa Rugoglobigerina rugosa Sample code/label Sea surface temperature Dataset 2006 ftpangaea https://doi.org/10.1594/PANGAEA.742669 https://doi.org/10.1029/2004PA001130 2023-01-20T08:51:16Z Analysis of 944 single specimens of three species of late Maastrichtian planktonic foraminifera (Racemiguembelina fructicosa, Contusotruncana contusa, and Rugoglobigerina rugosa) from 38 samples spanning the last 3 Myr of the Cretaceous shows consistent isotopic trends through time, consistent isotopic differences among taxa, and high within-sample isotopic variability throughout. Within-sample variability does not change systematically through time for any taxon, but average d18O values decrease by approx. 1.5 per mill, and average d13C values diverge up section. Comparing taxa, average d18O values are similar within most samples, but average d13C values generally decrease from R. fructicosa to R. rugosa to C. contusa. In addition, the within-sample variability of individual d13C measurements is larger for R. fructicosa than for either C. contusa or R. rugosa, an observation which is consistent with a photosymbiotic habitat for R. fructicosa. In terms of Maastrichtian paleoceanography the negative d18O trend of approx. 1.5 per mill corresponds to a temperature increase of approx. 6°C, and the divergence of d13C values up section suggests an increasingly stratified water column in the western Atlantic through the late Maastrichtian. We suggest that these trends are best explained by increasing import of South Atlantic waters into the North Atlantic and an intensification of the Northern Hemisphere polar front. Dataset North Atlantic Planktonic foraminifera PANGAEA - Data Publisher for Earth & Environmental Science Rugosa ENVELOPE(-61.250,-61.250,-62.633,-62.633) ENVELOPE(-76.234970,-76.234970,30.099910,30.099910) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
171-1050C Blake Nose North Atlantic Ocean Contusotruncana contusa δ13C δ18O DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Isotope ratio mass spectrometry Joides Resolution Leg171B Ocean Drilling Program ODP Racemiguembelina fructicosa Rugoglobigerina rugosa Sample code/label Sea surface temperature |
spellingShingle |
171-1050C Blake Nose North Atlantic Ocean Contusotruncana contusa δ13C δ18O DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Isotope ratio mass spectrometry Joides Resolution Leg171B Ocean Drilling Program ODP Racemiguembelina fructicosa Rugoglobigerina rugosa Sample code/label Sea surface temperature Isaza-Londoño, Carolina MacLeod, Kenneth G Huber, Brian T Isotopic measurements of 3 foraminifer species from ODP Hole 171-1050C |
topic_facet |
171-1050C Blake Nose North Atlantic Ocean Contusotruncana contusa δ13C δ18O DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Isotope ratio mass spectrometry Joides Resolution Leg171B Ocean Drilling Program ODP Racemiguembelina fructicosa Rugoglobigerina rugosa Sample code/label Sea surface temperature |
description |
Analysis of 944 single specimens of three species of late Maastrichtian planktonic foraminifera (Racemiguembelina fructicosa, Contusotruncana contusa, and Rugoglobigerina rugosa) from 38 samples spanning the last 3 Myr of the Cretaceous shows consistent isotopic trends through time, consistent isotopic differences among taxa, and high within-sample isotopic variability throughout. Within-sample variability does not change systematically through time for any taxon, but average d18O values decrease by approx. 1.5 per mill, and average d13C values diverge up section. Comparing taxa, average d18O values are similar within most samples, but average d13C values generally decrease from R. fructicosa to R. rugosa to C. contusa. In addition, the within-sample variability of individual d13C measurements is larger for R. fructicosa than for either C. contusa or R. rugosa, an observation which is consistent with a photosymbiotic habitat for R. fructicosa. In terms of Maastrichtian paleoceanography the negative d18O trend of approx. 1.5 per mill corresponds to a temperature increase of approx. 6°C, and the divergence of d13C values up section suggests an increasingly stratified water column in the western Atlantic through the late Maastrichtian. We suggest that these trends are best explained by increasing import of South Atlantic waters into the North Atlantic and an intensification of the Northern Hemisphere polar front. |
format |
Dataset |
author |
Isaza-Londoño, Carolina MacLeod, Kenneth G Huber, Brian T |
author_facet |
Isaza-Londoño, Carolina MacLeod, Kenneth G Huber, Brian T |
author_sort |
Isaza-Londoño, Carolina |
title |
Isotopic measurements of 3 foraminifer species from ODP Hole 171-1050C |
title_short |
Isotopic measurements of 3 foraminifer species from ODP Hole 171-1050C |
title_full |
Isotopic measurements of 3 foraminifer species from ODP Hole 171-1050C |
title_fullStr |
Isotopic measurements of 3 foraminifer species from ODP Hole 171-1050C |
title_full_unstemmed |
Isotopic measurements of 3 foraminifer species from ODP Hole 171-1050C |
title_sort |
isotopic measurements of 3 foraminifer species from odp hole 171-1050c |
publisher |
PANGAEA |
publishDate |
2006 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.742669 https://doi.org/10.1594/PANGAEA.742669 |
op_coverage |
LATITUDE: 30.099910 * LONGITUDE: -76.234970 * DATE/TIME START: 1997-02-08T19:30:00 * DATE/TIME END: 1997-02-08T19:30:00 * MINIMUM DEPTH, sediment/rock: 408.75 m * MAXIMUM DEPTH, sediment/rock: 455.35 m |
long_lat |
ENVELOPE(-61.250,-61.250,-62.633,-62.633) ENVELOPE(-76.234970,-76.234970,30.099910,30.099910) |
geographic |
Rugosa |
geographic_facet |
Rugosa |
genre |
North Atlantic Planktonic foraminifera |
genre_facet |
North Atlantic Planktonic foraminifera |
op_source |
Supplement to: Isaza-Londoño, Carolina; MacLeod, Kenneth G; Huber, Brian T (2006): Maastrichtian North Atlantic warming, increasing stratification, and foraminiferal paleobiology at three timescales. Paleoceanography, 21(1), PA1012, https://doi.org/10.1029/2004PA001130 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.742669 https://doi.org/10.1594/PANGAEA.742669 |
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.742669 https://doi.org/10.1029/2004PA001130 |
_version_ |
1766129196090785792 |