Strontium isotopic composition of interstitial waters from DSDP sites 25-245 and 38-336
Measurements of 87Sr/86Sr ratios of interstitial waters from leg 25, site 245 and leg 38, site 336 of the Deep Sea Drilling Project show that the enrichment of Sr[2+] with depth is caused both by the alteration of volcanic material and by the introduction of strontium derived from calcium carbonate....
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1978
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.710844 2023-05-15T17:34:25+02:00 Strontium isotopic composition of interstitial waters from DSDP sites 25-245 and 38-336 Hawkesworth, Chris J Elderfield, Henry MEDIAN LATITUDE: 15.908650 * MEDIAN LONGITUDE: 22.257000 * SOUTH-BOUND LATITUDE: -31.533700 * WEST-BOUND LONGITUDE: -7.787800 * NORTH-BOUND LATITUDE: 63.351000 * EAST-BOUND LONGITUDE: 52.301800 * DATE/TIME START: 1972-08-03T00:00:00 * DATE/TIME END: 1974-08-07T00:00:00 1978-12-19 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.710844 https://doi.org/10.1594/PANGAEA.710844 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.710844 https://doi.org/10.1594/PANGAEA.710844 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Hawkesworth, Chris J; Elderfield, Henry (1978): The strontium isotopic composition of interstitial waters from sites 245 and 336 of the Deep Sea Drilling Project. Earth and Planetary Science Letters, 40(3), 423-432, https://doi.org/10.1016/0012-821X(78)90165-6 25-245_Site 38-336 COMPCORE Composite Core Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Indian Ocean//BASIN Leg25 Leg38 North Atlantic/Norwegian Sea Dataset 1978 ftpangaea https://doi.org/10.1594/PANGAEA.710844 https://doi.org/10.1016/0012-821X(78)90165-6 2023-01-20T07:31:19Z Measurements of 87Sr/86Sr ratios of interstitial waters from leg 25, site 245 and leg 38, site 336 of the Deep Sea Drilling Project show that the enrichment of Sr[2+] with depth is caused both by the alteration of volcanic material and by the introduction of strontium derived from calcium carbonate. 87Sr/86 Sr ratios range from 0.70913 to 0.70794 at site 245 and from 0.70916 to 0.70694 at site 336. The low ratios compared with contemporaneous seawater reflect the release of Sr from a volcanic source having, according to material-balance calculations, a 87Sr/86 Sr ratio of about 0.7034 at site 336. At this site the source appears to be volcanic ash and not basaltic basement which acts as a sink for Sr[2+] during in situ low-temperature weathering. The volcanic contribution to the strontium enrichment in the basal interstitial waters varies from <10% at site 245 to >50% at site 336. The remaining Sr[2+] is derived from Sr-rich biogenic carbonate during diagenetic recrystallization to form Sr-poor calcite. Dataset North Atlantic Norwegian Sea PANGAEA - Data Publisher for Earth & Environmental Science Norwegian Sea Indian ENVELOPE(-7.787800,52.301800,63.351000,-31.533700) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
25-245_Site 38-336 COMPCORE Composite Core Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Indian Ocean//BASIN Leg25 Leg38 North Atlantic/Norwegian Sea |
spellingShingle |
25-245_Site 38-336 COMPCORE Composite Core Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Indian Ocean//BASIN Leg25 Leg38 North Atlantic/Norwegian Sea Hawkesworth, Chris J Elderfield, Henry Strontium isotopic composition of interstitial waters from DSDP sites 25-245 and 38-336 |
topic_facet |
25-245_Site 38-336 COMPCORE Composite Core Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Indian Ocean//BASIN Leg25 Leg38 North Atlantic/Norwegian Sea |
description |
Measurements of 87Sr/86Sr ratios of interstitial waters from leg 25, site 245 and leg 38, site 336 of the Deep Sea Drilling Project show that the enrichment of Sr[2+] with depth is caused both by the alteration of volcanic material and by the introduction of strontium derived from calcium carbonate. 87Sr/86 Sr ratios range from 0.70913 to 0.70794 at site 245 and from 0.70916 to 0.70694 at site 336. The low ratios compared with contemporaneous seawater reflect the release of Sr from a volcanic source having, according to material-balance calculations, a 87Sr/86 Sr ratio of about 0.7034 at site 336. At this site the source appears to be volcanic ash and not basaltic basement which acts as a sink for Sr[2+] during in situ low-temperature weathering. The volcanic contribution to the strontium enrichment in the basal interstitial waters varies from <10% at site 245 to >50% at site 336. The remaining Sr[2+] is derived from Sr-rich biogenic carbonate during diagenetic recrystallization to form Sr-poor calcite. |
format |
Dataset |
author |
Hawkesworth, Chris J Elderfield, Henry |
author_facet |
Hawkesworth, Chris J Elderfield, Henry |
author_sort |
Hawkesworth, Chris J |
title |
Strontium isotopic composition of interstitial waters from DSDP sites 25-245 and 38-336 |
title_short |
Strontium isotopic composition of interstitial waters from DSDP sites 25-245 and 38-336 |
title_full |
Strontium isotopic composition of interstitial waters from DSDP sites 25-245 and 38-336 |
title_fullStr |
Strontium isotopic composition of interstitial waters from DSDP sites 25-245 and 38-336 |
title_full_unstemmed |
Strontium isotopic composition of interstitial waters from DSDP sites 25-245 and 38-336 |
title_sort |
strontium isotopic composition of interstitial waters from dsdp sites 25-245 and 38-336 |
publisher |
PANGAEA |
publishDate |
1978 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.710844 https://doi.org/10.1594/PANGAEA.710844 |
op_coverage |
MEDIAN LATITUDE: 15.908650 * MEDIAN LONGITUDE: 22.257000 * SOUTH-BOUND LATITUDE: -31.533700 * WEST-BOUND LONGITUDE: -7.787800 * NORTH-BOUND LATITUDE: 63.351000 * EAST-BOUND LONGITUDE: 52.301800 * DATE/TIME START: 1972-08-03T00:00:00 * DATE/TIME END: 1974-08-07T00:00:00 |
long_lat |
ENVELOPE(-7.787800,52.301800,63.351000,-31.533700) |
geographic |
Norwegian Sea Indian |
geographic_facet |
Norwegian Sea Indian |
genre |
North Atlantic Norwegian Sea |
genre_facet |
North Atlantic Norwegian Sea |
op_source |
Supplement to: Hawkesworth, Chris J; Elderfield, Henry (1978): The strontium isotopic composition of interstitial waters from sites 245 and 336 of the Deep Sea Drilling Project. Earth and Planetary Science Letters, 40(3), 423-432, https://doi.org/10.1016/0012-821X(78)90165-6 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.710844 https://doi.org/10.1594/PANGAEA.710844 |
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.710844 https://doi.org/10.1016/0012-821X(78)90165-6 |
_version_ |
1766133253174984704 |