(Table 1) Lead isotopic composition and concentration at DSDP Leg 82 Holes
The aim of DSDP Leg 82 was to decipher the temporal and spatial evolution of Azores Plume. The Pb-isotopic results of this leg are rather complex, and can be summarized as follows: 1. At a given site (561, 558), variations of Pb isotopic compositions are generally accompanied by major changes in tra...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.806095 2023-05-15T17:35:23+02:00 (Table 1) Lead isotopic composition and concentration at DSDP Leg 82 Holes Dupré, Bernard Göpel, C Bougault, Henri MEDIAN LATITUDE: 35.675100 * MEDIAN LONGITUDE: -39.300720 * SOUTH-BOUND LATITUDE: 33.141500 * WEST-BOUND LONGITUDE: -43.767200 * NORTH-BOUND LATITUDE: 38.939700 * EAST-BOUND LONGITUDE: -34.685300 * DATE/TIME START: 1981-09-22T00:00:00 * DATE/TIME END: 1981-10-28T00:00:00 * MINIMUM ELEVATION: -3820.0 m * MAXIMUM ELEVATION: -3172.0 m 1985-01-28 text/tab-separated-values, 118 data points https://doi.pangaea.de/10.1594/PANGAEA.806095 https://doi.org/10.1594/PANGAEA.806095 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.806095 https://doi.org/10.1594/PANGAEA.806095 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Dupré, Bernard; Göpel, C; Bougault, Henri (1985): Lead isotopic variations in old ocean crust near the Azores. In: Bougault, H; Cande, SC; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 82, 497-500, https://doi.org/10.2973/dsdp.proc.82.125.1985 82-556 82-558 82-561 82-562 82-564 Comment Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Elevation of event Event label Glomar Challenger Latitude of event Lead Lead-206/Lead-204 ratio Lead-207/Lead-204 ratio Lead-208/Lead-204 ratio Leg82 Longitude of event Mass spectrometry North Atlantic/RIDGE Sample code/label Dataset 1985 ftpangaea https://doi.org/10.1594/PANGAEA.806095 https://doi.org/10.2973/dsdp.proc.82.125.1985 2023-01-20T09:00:22Z The aim of DSDP Leg 82 was to decipher the temporal and spatial evolution of Azores Plume. The Pb-isotopic results of this leg are rather complex, and can be summarized as follows: 1. At a given site (561, 558), variations of Pb isotopic compositions are generally accompanied by major changes in trace-element ratios, indicating significant heterogeneity of the source region. There is a correlation between Pb isotopes and trace elements. 2. In contrast, if all the data (i.e., all studied sites) of Leg 82 are considered together, no correlation can be discerned between Pb isotopes and trace elements. Site 556, especially, shows abnormal behavior. 3. Leg 82 samples not only cover the entire range of Pb isotopic composition previously established for the Atlantic Ocean, but extend this field to more radiogenic values. 4. The data are compatible with the hot-spot model proposed by Schilling (1975), if one considers that the Azores Plume itself is isotopically heterogeneous, and that it has been progressively contaminated to various degrees by upper mantle material. Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-43.767200,-34.685300,38.939700,33.141500) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
82-556 82-558 82-561 82-562 82-564 Comment Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Elevation of event Event label Glomar Challenger Latitude of event Lead Lead-206/Lead-204 ratio Lead-207/Lead-204 ratio Lead-208/Lead-204 ratio Leg82 Longitude of event Mass spectrometry North Atlantic/RIDGE Sample code/label |
spellingShingle |
82-556 82-558 82-561 82-562 82-564 Comment Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Elevation of event Event label Glomar Challenger Latitude of event Lead Lead-206/Lead-204 ratio Lead-207/Lead-204 ratio Lead-208/Lead-204 ratio Leg82 Longitude of event Mass spectrometry North Atlantic/RIDGE Sample code/label Dupré, Bernard Göpel, C Bougault, Henri (Table 1) Lead isotopic composition and concentration at DSDP Leg 82 Holes |
topic_facet |
82-556 82-558 82-561 82-562 82-564 Comment Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Elevation of event Event label Glomar Challenger Latitude of event Lead Lead-206/Lead-204 ratio Lead-207/Lead-204 ratio Lead-208/Lead-204 ratio Leg82 Longitude of event Mass spectrometry North Atlantic/RIDGE Sample code/label |
description |
The aim of DSDP Leg 82 was to decipher the temporal and spatial evolution of Azores Plume. The Pb-isotopic results of this leg are rather complex, and can be summarized as follows: 1. At a given site (561, 558), variations of Pb isotopic compositions are generally accompanied by major changes in trace-element ratios, indicating significant heterogeneity of the source region. There is a correlation between Pb isotopes and trace elements. 2. In contrast, if all the data (i.e., all studied sites) of Leg 82 are considered together, no correlation can be discerned between Pb isotopes and trace elements. Site 556, especially, shows abnormal behavior. 3. Leg 82 samples not only cover the entire range of Pb isotopic composition previously established for the Atlantic Ocean, but extend this field to more radiogenic values. 4. The data are compatible with the hot-spot model proposed by Schilling (1975), if one considers that the Azores Plume itself is isotopically heterogeneous, and that it has been progressively contaminated to various degrees by upper mantle material. |
format |
Dataset |
author |
Dupré, Bernard Göpel, C Bougault, Henri |
author_facet |
Dupré, Bernard Göpel, C Bougault, Henri |
author_sort |
Dupré, Bernard |
title |
(Table 1) Lead isotopic composition and concentration at DSDP Leg 82 Holes |
title_short |
(Table 1) Lead isotopic composition and concentration at DSDP Leg 82 Holes |
title_full |
(Table 1) Lead isotopic composition and concentration at DSDP Leg 82 Holes |
title_fullStr |
(Table 1) Lead isotopic composition and concentration at DSDP Leg 82 Holes |
title_full_unstemmed |
(Table 1) Lead isotopic composition and concentration at DSDP Leg 82 Holes |
title_sort |
(table 1) lead isotopic composition and concentration at dsdp leg 82 holes |
publisher |
PANGAEA |
publishDate |
1985 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.806095 https://doi.org/10.1594/PANGAEA.806095 |
op_coverage |
MEDIAN LATITUDE: 35.675100 * MEDIAN LONGITUDE: -39.300720 * SOUTH-BOUND LATITUDE: 33.141500 * WEST-BOUND LONGITUDE: -43.767200 * NORTH-BOUND LATITUDE: 38.939700 * EAST-BOUND LONGITUDE: -34.685300 * DATE/TIME START: 1981-09-22T00:00:00 * DATE/TIME END: 1981-10-28T00:00:00 * MINIMUM ELEVATION: -3820.0 m * MAXIMUM ELEVATION: -3172.0 m |
long_lat |
ENVELOPE(-43.767200,-34.685300,38.939700,33.141500) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Dupré, Bernard; Göpel, C; Bougault, Henri (1985): Lead isotopic variations in old ocean crust near the Azores. In: Bougault, H; Cande, SC; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 82, 497-500, https://doi.org/10.2973/dsdp.proc.82.125.1985 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.806095 https://doi.org/10.1594/PANGAEA.806095 |
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.806095 https://doi.org/10.2973/dsdp.proc.82.125.1985 |
_version_ |
1766134543605039104 |