Planktonic foraminifera and sea surface temperature reconstruction of sediments from the Mediterranean Sea
Water exchange between the Black Sea and the Mediterranean Sea has been a major focus of the paleohydrography of the eastern Mediterranean. Glacial melt water released from the Black Sea is a potential factor in the formation of sapropel S1, an organic-rich sediment layer that accumulated during the...
Main Authors: | , , , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2003
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.736518 https://doi.org/10.1594/PANGAEA.736518 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.736518 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.736518 2023-05-15T18:01:07+02:00 Planktonic foraminifera and sea surface temperature reconstruction of sediments from the Mediterranean Sea Sperling, Michael R Schmiedl, Gerhard Hemleben, Christoph Emeis, Kay-Christian Erlenkeuser, Helmut Grootes, Pieter Meiert MEDIAN LATITUDE: 36.725250 * MEDIAN LONGITUDE: 30.951050 * SOUTH-BOUND LATITUDE: 32.608700 * WEST-BOUND LONGITUDE: 27.763200 * NORTH-BOUND LATITUDE: 40.841800 * EAST-BOUND LONGITUDE: 34.138900 * DATE/TIME START: 1999-02-04T00:00:00 * DATE/TIME END: 1999-04-18T00:00:00 2003-04-08 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.736518 https://doi.org/10.1594/PANGAEA.736518 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.736518 https://doi.org/10.1594/PANGAEA.736518 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Sperling, Michael R; Schmiedl, Gerhard; Hemleben, Christoph; Emeis, Kay-Christian; Erlenkeuser, Helmut; Grootes, Pieter Meiert (2003): Black Sea impact on the formation of eastern Mediterranean sapropel S1? Evidence from the Marmara Sea. Palaeogeography, Palaeoclimatology, Palaeoecology, 190, 9-21, https://doi.org/10.1016/S0031-0182(02)00596-5 71 GeoB Geosciences University of Bremen GeoTü KL_Mg M44_1 GeoTü KL-83 M44/1 M44/1_KL71 M44/3 M44/3_KL83 Meteor (1986) Paleoceanography at Tübingen University Piston corer Meischner large SESAME Southern European Seas: Assessing and Modelling Ecosystem Changes Dataset 2003 ftpangaea https://doi.org/10.1594/PANGAEA.736518 https://doi.org/10.1016/S0031-0182(02)00596-5 2023-01-20T07:31:44Z Water exchange between the Black Sea and the Mediterranean Sea has been a major focus of the paleohydrography of the eastern Mediterranean. Glacial melt water released from the Black Sea is a potential factor in the formation of sapropel S1, an organic-rich sediment layer that accumulated during the Early Holocene. A high-resolution study done on sediments from the Marmara Sea, the gateway between the Mediterranean and the Black Sea, sheds light on the Holocene exchange processes. Past sea surface temperature and sea surface salinity (SSS) were derived from stable oxygen isotope ratios (delta18O) of foraminiferal calcite and alkenone unsaturation ratios (Uk'37). Heavy delta18O values and high SSS in the Marmara Sea suggest absence of low salinity water from the Black Sea during S1. The comparison with data from the Levantine Basin and southern Aegean Sea outlines gradients of freshening in the eastern Mediterranean Sea, whereby the major sources of freshwater were closer to the Levantine Basin. It is thus concluded that the Black Sea was not a major freshwater source contributing to formation of S1. Given the absence of a low salinity layer, the deposition of organic-rich sediments corresponding to S1 in the Marmara Sea is likely the result of the global transgression and the concomitant re-organization of biogeochemical cycles, leading to enhanced productivity as shown by Globigerina bulloides. Dataset Planktonic foraminifera PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(27.763200,34.138900,40.841800,32.608700) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
71 GeoB Geosciences University of Bremen GeoTü KL_Mg M44_1 GeoTü KL-83 M44/1 M44/1_KL71 M44/3 M44/3_KL83 Meteor (1986) Paleoceanography at Tübingen University Piston corer Meischner large SESAME Southern European Seas: Assessing and Modelling Ecosystem Changes |
spellingShingle |
71 GeoB Geosciences University of Bremen GeoTü KL_Mg M44_1 GeoTü KL-83 M44/1 M44/1_KL71 M44/3 M44/3_KL83 Meteor (1986) Paleoceanography at Tübingen University Piston corer Meischner large SESAME Southern European Seas: Assessing and Modelling Ecosystem Changes Sperling, Michael R Schmiedl, Gerhard Hemleben, Christoph Emeis, Kay-Christian Erlenkeuser, Helmut Grootes, Pieter Meiert Planktonic foraminifera and sea surface temperature reconstruction of sediments from the Mediterranean Sea |
topic_facet |
71 GeoB Geosciences University of Bremen GeoTü KL_Mg M44_1 GeoTü KL-83 M44/1 M44/1_KL71 M44/3 M44/3_KL83 Meteor (1986) Paleoceanography at Tübingen University Piston corer Meischner large SESAME Southern European Seas: Assessing and Modelling Ecosystem Changes |
description |
Water exchange between the Black Sea and the Mediterranean Sea has been a major focus of the paleohydrography of the eastern Mediterranean. Glacial melt water released from the Black Sea is a potential factor in the formation of sapropel S1, an organic-rich sediment layer that accumulated during the Early Holocene. A high-resolution study done on sediments from the Marmara Sea, the gateway between the Mediterranean and the Black Sea, sheds light on the Holocene exchange processes. Past sea surface temperature and sea surface salinity (SSS) were derived from stable oxygen isotope ratios (delta18O) of foraminiferal calcite and alkenone unsaturation ratios (Uk'37). Heavy delta18O values and high SSS in the Marmara Sea suggest absence of low salinity water from the Black Sea during S1. The comparison with data from the Levantine Basin and southern Aegean Sea outlines gradients of freshening in the eastern Mediterranean Sea, whereby the major sources of freshwater were closer to the Levantine Basin. It is thus concluded that the Black Sea was not a major freshwater source contributing to formation of S1. Given the absence of a low salinity layer, the deposition of organic-rich sediments corresponding to S1 in the Marmara Sea is likely the result of the global transgression and the concomitant re-organization of biogeochemical cycles, leading to enhanced productivity as shown by Globigerina bulloides. |
format |
Dataset |
author |
Sperling, Michael R Schmiedl, Gerhard Hemleben, Christoph Emeis, Kay-Christian Erlenkeuser, Helmut Grootes, Pieter Meiert |
author_facet |
Sperling, Michael R Schmiedl, Gerhard Hemleben, Christoph Emeis, Kay-Christian Erlenkeuser, Helmut Grootes, Pieter Meiert |
author_sort |
Sperling, Michael R |
title |
Planktonic foraminifera and sea surface temperature reconstruction of sediments from the Mediterranean Sea |
title_short |
Planktonic foraminifera and sea surface temperature reconstruction of sediments from the Mediterranean Sea |
title_full |
Planktonic foraminifera and sea surface temperature reconstruction of sediments from the Mediterranean Sea |
title_fullStr |
Planktonic foraminifera and sea surface temperature reconstruction of sediments from the Mediterranean Sea |
title_full_unstemmed |
Planktonic foraminifera and sea surface temperature reconstruction of sediments from the Mediterranean Sea |
title_sort |
planktonic foraminifera and sea surface temperature reconstruction of sediments from the mediterranean sea |
publisher |
PANGAEA |
publishDate |
2003 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.736518 https://doi.org/10.1594/PANGAEA.736518 |
op_coverage |
MEDIAN LATITUDE: 36.725250 * MEDIAN LONGITUDE: 30.951050 * SOUTH-BOUND LATITUDE: 32.608700 * WEST-BOUND LONGITUDE: 27.763200 * NORTH-BOUND LATITUDE: 40.841800 * EAST-BOUND LONGITUDE: 34.138900 * DATE/TIME START: 1999-02-04T00:00:00 * DATE/TIME END: 1999-04-18T00:00:00 |
long_lat |
ENVELOPE(27.763200,34.138900,40.841800,32.608700) |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Supplement to: Sperling, Michael R; Schmiedl, Gerhard; Hemleben, Christoph; Emeis, Kay-Christian; Erlenkeuser, Helmut; Grootes, Pieter Meiert (2003): Black Sea impact on the formation of eastern Mediterranean sapropel S1? Evidence from the Marmara Sea. Palaeogeography, Palaeoclimatology, Palaeoecology, 190, 9-21, https://doi.org/10.1016/S0031-0182(02)00596-5 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.736518 https://doi.org/10.1594/PANGAEA.736518 |
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.736518 https://doi.org/10.1016/S0031-0182(02)00596-5 |
_version_ |
1766170455100620800 |