Isotope ratios of sediments from DSDP Hole 47-397 (Table 1)
We report the Sr, Nd and Pb isotopic compositions (1) of 66 lava flows and dikes spanning the circa 15 Myr subaerial volcanic history of Gran Canaria and (2) of five Miocene through Cretaceous sediment samples from DSDP site 397, located 100 km south of Gran Canaria. The isotope ratios of the Gran C...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.721001 2023-05-15T17:37:11+02:00 Isotope ratios of sediments from DSDP Hole 47-397 (Table 1) Hoernle, Kaj Tilton, George Schmincke, Hans-Ulrich LATITUDE: 26.845000 * LONGITUDE: -15.180000 * DATE/TIME START: 1976-03-21T00:00:00 * DATE/TIME END: 1976-03-21T00:00:00 * MINIMUM ELEVATION: -2900.0 m * MAXIMUM ELEVATION: -2900.0 m 1991-06-18 text/tab-separated-values, 85 data points https://doi.pangaea.de/10.1594/PANGAEA.721001 https://doi.org/10.1594/PANGAEA.721001 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.721001 https://doi.org/10.1594/PANGAEA.721001 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Hoernle, Kaj; Tilton, George; Schmincke, Hans-Ulrich (1991): Sr-Nd-Pb isotopic evolution of Gran Canaria: evidence for shallow enriched mantle beneath the Canary Islands. Earth and Planetary Science Letters, 106(1-4), 44-63, https://doi.org/10.1016/0012-821X(91)90062-M 47-397 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Isotope dilution Lead Lead-206/Lead-204 ratio Lead-207/Lead-204 ratio Lead-208/Lead-204 ratio Leg47 Neodymium Neodymium-143/Neodymium-144 ratio error North Atlantic/CONT RISE Rubidium Samarium Sample code/label Sample comment Strontium Strontium-87/Strontium-86 ratio Thorium Uranium ε-Neodymium Dataset 1991 ftpangaea https://doi.org/10.1594/PANGAEA.721001 https://doi.org/10.1016/0012-821X(91)90062-M 2023-01-20T08:48:21Z We report the Sr, Nd and Pb isotopic compositions (1) of 66 lava flows and dikes spanning the circa 15 Myr subaerial volcanic history of Gran Canaria and (2) of five Miocene through Cretaceous sediment samples from DSDP site 397, located 100 km south of Gran Canaria. The isotope ratios of the Gran Canaria samples vary for 87Sr/86Sr: 0.70302-0.70346, for 143Nd/144Nd: 0.51275-0.51298, and for 206Pb/204Pb: 18.76-20.01. The Miocene and the Pliocene-Recent volcanics form distinct trends on isotope correlation diagrams. The most SiO2-undersaturated volcanics from each group have the least radiogenic Sr and most radiogenic Pb, whereas evolved volcanics from each group have the most radiogenic Sr and least radiogenic Pb. In the Pliocene-Recent group, the most undersaturated basalts also have the most radiogenic Nd, and the evolved volcanics have the least radiogenic Nd. The most SiO2-saturated basalts have intermediate compositions within each age group. Although the two age groups have overlapping Sr and Nd isotope ratios, the Pliocene-Recent volcanics have less radiogenic Pb than the Miocene volcanics. At least four components are required to explain the isotope systematics of Gran Canaria by mixing. There is no evidence for crustal contamination in any of the volcanics. The most undersaturated Miocene volcanics fall within the field for the two youngest and westernmost Canary Islands in all isotope correlation diagrams and thus appear to have the most plume-like (high 238U/204Pb) HIMU-like composition. During the Pliocene-Recent epochs, the plume was located to the west of Gran Canaria. The isotopic composition of the most undersaturated Pliocene-Recent volcanics may reflect entrainment of asthenospheric material (with a depleted mantle (DM)-like composition), as plume material was transported through the upper asthenosphere to the base of the lithosphere beneath Gran Canaria. The shift in isotopic composition with increasing SiO2-saturation in the basalts and degree of differentiation for all volcanics is ... Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-15.180000,-15.180000,26.845000,26.845000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
47-397 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Isotope dilution Lead Lead-206/Lead-204 ratio Lead-207/Lead-204 ratio Lead-208/Lead-204 ratio Leg47 Neodymium Neodymium-143/Neodymium-144 ratio error North Atlantic/CONT RISE Rubidium Samarium Sample code/label Sample comment Strontium Strontium-87/Strontium-86 ratio Thorium Uranium ε-Neodymium |
spellingShingle |
47-397 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Isotope dilution Lead Lead-206/Lead-204 ratio Lead-207/Lead-204 ratio Lead-208/Lead-204 ratio Leg47 Neodymium Neodymium-143/Neodymium-144 ratio error North Atlantic/CONT RISE Rubidium Samarium Sample code/label Sample comment Strontium Strontium-87/Strontium-86 ratio Thorium Uranium ε-Neodymium Hoernle, Kaj Tilton, George Schmincke, Hans-Ulrich Isotope ratios of sediments from DSDP Hole 47-397 (Table 1) |
topic_facet |
47-397 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Isotope dilution Lead Lead-206/Lead-204 ratio Lead-207/Lead-204 ratio Lead-208/Lead-204 ratio Leg47 Neodymium Neodymium-143/Neodymium-144 ratio error North Atlantic/CONT RISE Rubidium Samarium Sample code/label Sample comment Strontium Strontium-87/Strontium-86 ratio Thorium Uranium ε-Neodymium |
description |
We report the Sr, Nd and Pb isotopic compositions (1) of 66 lava flows and dikes spanning the circa 15 Myr subaerial volcanic history of Gran Canaria and (2) of five Miocene through Cretaceous sediment samples from DSDP site 397, located 100 km south of Gran Canaria. The isotope ratios of the Gran Canaria samples vary for 87Sr/86Sr: 0.70302-0.70346, for 143Nd/144Nd: 0.51275-0.51298, and for 206Pb/204Pb: 18.76-20.01. The Miocene and the Pliocene-Recent volcanics form distinct trends on isotope correlation diagrams. The most SiO2-undersaturated volcanics from each group have the least radiogenic Sr and most radiogenic Pb, whereas evolved volcanics from each group have the most radiogenic Sr and least radiogenic Pb. In the Pliocene-Recent group, the most undersaturated basalts also have the most radiogenic Nd, and the evolved volcanics have the least radiogenic Nd. The most SiO2-saturated basalts have intermediate compositions within each age group. Although the two age groups have overlapping Sr and Nd isotope ratios, the Pliocene-Recent volcanics have less radiogenic Pb than the Miocene volcanics. At least four components are required to explain the isotope systematics of Gran Canaria by mixing. There is no evidence for crustal contamination in any of the volcanics. The most undersaturated Miocene volcanics fall within the field for the two youngest and westernmost Canary Islands in all isotope correlation diagrams and thus appear to have the most plume-like (high 238U/204Pb) HIMU-like composition. During the Pliocene-Recent epochs, the plume was located to the west of Gran Canaria. The isotopic composition of the most undersaturated Pliocene-Recent volcanics may reflect entrainment of asthenospheric material (with a depleted mantle (DM)-like composition), as plume material was transported through the upper asthenosphere to the base of the lithosphere beneath Gran Canaria. The shift in isotopic composition with increasing SiO2-saturation in the basalts and degree of differentiation for all volcanics is ... |
format |
Dataset |
author |
Hoernle, Kaj Tilton, George Schmincke, Hans-Ulrich |
author_facet |
Hoernle, Kaj Tilton, George Schmincke, Hans-Ulrich |
author_sort |
Hoernle, Kaj |
title |
Isotope ratios of sediments from DSDP Hole 47-397 (Table 1) |
title_short |
Isotope ratios of sediments from DSDP Hole 47-397 (Table 1) |
title_full |
Isotope ratios of sediments from DSDP Hole 47-397 (Table 1) |
title_fullStr |
Isotope ratios of sediments from DSDP Hole 47-397 (Table 1) |
title_full_unstemmed |
Isotope ratios of sediments from DSDP Hole 47-397 (Table 1) |
title_sort |
isotope ratios of sediments from dsdp hole 47-397 (table 1) |
publisher |
PANGAEA |
publishDate |
1991 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.721001 https://doi.org/10.1594/PANGAEA.721001 |
op_coverage |
LATITUDE: 26.845000 * LONGITUDE: -15.180000 * DATE/TIME START: 1976-03-21T00:00:00 * DATE/TIME END: 1976-03-21T00:00:00 * MINIMUM ELEVATION: -2900.0 m * MAXIMUM ELEVATION: -2900.0 m |
long_lat |
ENVELOPE(-15.180000,-15.180000,26.845000,26.845000) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Hoernle, Kaj; Tilton, George; Schmincke, Hans-Ulrich (1991): Sr-Nd-Pb isotopic evolution of Gran Canaria: evidence for shallow enriched mantle beneath the Canary Islands. Earth and Planetary Science Letters, 106(1-4), 44-63, https://doi.org/10.1016/0012-821X(91)90062-M |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.721001 https://doi.org/10.1594/PANGAEA.721001 |
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.721001 https://doi.org/10.1016/0012-821X(91)90062-M |
_version_ |
1766136960670236672 |