(Table 1) Lead isotopic compositions of basalts from DSDP Hole 81-553
The passive continental margin south-west of Rockall Plateau is characterized by a thick sequence of oceanward-dipping seismic reflectors. During Leg 81 of the Deep Sea Drilling Project, these reflectors were sampled at Site 553 and proved to consist almost exclusively of basalt. Here we present lea...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.770021 2023-05-15T17:33:29+02:00 (Table 1) Lead isotopic compositions of basalts from DSDP Hole 81-553 Morton, Andrew C Taylor, Paul N LATITUDE: 56.088700 * LONGITUDE: -23.343500 * DATE/TIME START: 1981-08-07T00:00:00 * DATE/TIME END: 1981-08-07T00:00:00 * MINIMUM ELEVATION: -2329.0 m * MAXIMUM ELEVATION: -2329.0 m 1987-09-21 text/tab-separated-values, 36 data points https://doi.pangaea.de/10.1594/PANGAEA.770021 https://doi.org/10.1594/PANGAEA.770021 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.770021 https://doi.org/10.1594/PANGAEA.770021 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Morton, Andrew C; Taylor, Paul N (1987): Lead isotope evidence for the structure of the Rockall dipping-reflector passive margin. Nature, 326(6111), 381-383, https://doi.org/10.1038/326381a0 81-553 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Lead-206/Lead-204 ratio Lead-207/Lead-204 ratio Lead-208/Lead-204 ratio Leg81 North Atlantic/PLATEAU Sample code/label Dataset 1987 ftpangaea https://doi.org/10.1594/PANGAEA.770021 https://doi.org/10.1038/326381a0 2023-01-20T08:52:42Z The passive continental margin south-west of Rockall Plateau is characterized by a thick sequence of oceanward-dipping seismic reflectors. During Leg 81 of the Deep Sea Drilling Project, these reflectors were sampled at Site 553 and proved to consist almost exclusively of basalt. Here we present lead isotope data which indicate that these basalts may have been contaminated by ancient uranium-depleted continental crust, or alternatively, derived from a sub-continental lithospheric mantle source. In either case, the implications are that the basalts of the south-west Rockall Plateau formed by eruption through and onto continental basement, not by 'subaerial seafloor spreading'. This conclusion is in accord with gravity models of the area, which predict stretched continental crust beneath the dipping reflector sequence. Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Rockall Plateau ENVELOPE(-18.833,-18.833,56.333,56.333) ENVELOPE(-23.343500,-23.343500,56.088700,56.088700) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
81-553 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Lead-206/Lead-204 ratio Lead-207/Lead-204 ratio Lead-208/Lead-204 ratio Leg81 North Atlantic/PLATEAU Sample code/label |
spellingShingle |
81-553 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Lead-206/Lead-204 ratio Lead-207/Lead-204 ratio Lead-208/Lead-204 ratio Leg81 North Atlantic/PLATEAU Sample code/label Morton, Andrew C Taylor, Paul N (Table 1) Lead isotopic compositions of basalts from DSDP Hole 81-553 |
topic_facet |
81-553 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Lead-206/Lead-204 ratio Lead-207/Lead-204 ratio Lead-208/Lead-204 ratio Leg81 North Atlantic/PLATEAU Sample code/label |
description |
The passive continental margin south-west of Rockall Plateau is characterized by a thick sequence of oceanward-dipping seismic reflectors. During Leg 81 of the Deep Sea Drilling Project, these reflectors were sampled at Site 553 and proved to consist almost exclusively of basalt. Here we present lead isotope data which indicate that these basalts may have been contaminated by ancient uranium-depleted continental crust, or alternatively, derived from a sub-continental lithospheric mantle source. In either case, the implications are that the basalts of the south-west Rockall Plateau formed by eruption through and onto continental basement, not by 'subaerial seafloor spreading'. This conclusion is in accord with gravity models of the area, which predict stretched continental crust beneath the dipping reflector sequence. |
format |
Dataset |
author |
Morton, Andrew C Taylor, Paul N |
author_facet |
Morton, Andrew C Taylor, Paul N |
author_sort |
Morton, Andrew C |
title |
(Table 1) Lead isotopic compositions of basalts from DSDP Hole 81-553 |
title_short |
(Table 1) Lead isotopic compositions of basalts from DSDP Hole 81-553 |
title_full |
(Table 1) Lead isotopic compositions of basalts from DSDP Hole 81-553 |
title_fullStr |
(Table 1) Lead isotopic compositions of basalts from DSDP Hole 81-553 |
title_full_unstemmed |
(Table 1) Lead isotopic compositions of basalts from DSDP Hole 81-553 |
title_sort |
(table 1) lead isotopic compositions of basalts from dsdp hole 81-553 |
publisher |
PANGAEA |
publishDate |
1987 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.770021 https://doi.org/10.1594/PANGAEA.770021 |
op_coverage |
LATITUDE: 56.088700 * LONGITUDE: -23.343500 * DATE/TIME START: 1981-08-07T00:00:00 * DATE/TIME END: 1981-08-07T00:00:00 * MINIMUM ELEVATION: -2329.0 m * MAXIMUM ELEVATION: -2329.0 m |
long_lat |
ENVELOPE(-18.833,-18.833,56.333,56.333) ENVELOPE(-23.343500,-23.343500,56.088700,56.088700) |
geographic |
Rockall Plateau |
geographic_facet |
Rockall Plateau |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Morton, Andrew C; Taylor, Paul N (1987): Lead isotope evidence for the structure of the Rockall dipping-reflector passive margin. Nature, 326(6111), 381-383, https://doi.org/10.1038/326381a0 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.770021 https://doi.org/10.1594/PANGAEA.770021 |
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.770021 https://doi.org/10.1038/326381a0 |
_version_ |
1766131999876055040 |