Composition of volcanic rocks from the Alchan Basin, Northwestern Primorie
Geological, petrochemical, and geochemical data are reported for volcanic rocks of a Cretaceous pull-apart basin in the Tan Lu strike-slip system, Asian continental margin. A comparison of these volcanic rocks with magmatic rocks from typical Cenozoic transform margins in the western North America a...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.788330 2023-05-15T15:40:02+02:00 Composition of volcanic rocks from the Alchan Basin, Northwestern Primorie Simanenko, V P Golozubov, V V Sakhno, V G MEDIAN LATITUDE: 46.563567 * MEDIAN LONGITUDE: 134.607200 * SOUTH-BOUND LATITUDE: 46.130000 * WEST-BOUND LONGITUDE: 134.100000 * NORTH-BOUND LATITUDE: 47.000000 * EAST-BOUND LONGITUDE: 135.100000 2006-09-07 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.788330 https://doi.org/10.1594/PANGAEA.788330 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.788330 https://doi.org/10.1594/PANGAEA.788330 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Far East Geological Institute, Far East Division, Russian Academy of Sciences Supplement to: Simanenko, V P; Golozubov, V V; Sakhno, V G (2006): Geochemistry of volcanic rocks from transform margins: evidence from the Alchan Basin, Northwestern Primorie. Translated from Geokhimiya, 2006, 12, 1251-1265, Geochemistry International, 44(12), 1157-1169, https://doi.org/10.1134/S0016702906120019 Archive of Ocean Data ARCOD Dataset 2006 ftpangaea https://doi.org/10.1594/PANGAEA.788330 https://doi.org/10.1134/S0016702906120019 2023-01-20T07:32:42Z Geological, petrochemical, and geochemical data are reported for volcanic rocks of a Cretaceous pull-apart basin in the Tan Lu strike-slip system, Asian continental margin. A comparison of these volcanic rocks with magmatic rocks from typical Cenozoic transform margins in the western North America and rift zones of Korea made it possible to distinguish some indicator features of transform-margin volcanic rocks. Magmatic rocks from strike-slip extension zones bear island-arc, intraplate, and occasionally depleted MORB geochemical signatures. In addition to calc-alkaline rocks there are bimodal volcanic series. The rocks are characterized by high K2O, MgO, and TiO2 contents. They show variable enrichment in LILE relative to HFSE, which is typical of island-arc magmas. At the same time they are rich in compatible transition elements, which is a characteristic of intraplate magmas. Trace element distribution patterns normalized to MORB or primitive mantle usually show a negative Ta-Nb anomaly typical of suprasubduction settings. Their Ta/Nb ratio is lower, whereas Ba/Nb, Ba/La, and La/Yb ratios are higher than those of some MORB and OIB. In terms of trace element systematics, for example, Ta-Th-Hf, Ba/La-(Ba/La)_n, (La/Sm)_n-La/Hf, and others, they fall within the area of mixing of magmas from several sources (island arc, intraplate, and depleted reservoirs). Magmatic rocks of transform settings show a sigmoidal chondrite-normalized REE distribution pattern with a negative slope of LREE, depletion in MREE, and an enriched or flat HREE pattern. Magmas with mixed geochemical characteristics presumably originated in a transform margin setting in local extension zones under influence of mantle diapirs, which caused metasomatism and melting of the lithosphere at different levels, and mixing of melts from different sources in variable proportions. Dataset Bear Island PANGAEA - Data Publisher for Earth & Environmental Science Bear Island ENVELOPE(-67.250,-67.250,-68.151,-68.151) ENVELOPE(134.100000,135.100000,47.000000,46.130000) |
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Open Polar |
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PANGAEA - Data Publisher for Earth & Environmental Science |
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ftpangaea |
language |
English |
topic |
Archive of Ocean Data ARCOD |
spellingShingle |
Archive of Ocean Data ARCOD Simanenko, V P Golozubov, V V Sakhno, V G Composition of volcanic rocks from the Alchan Basin, Northwestern Primorie |
topic_facet |
Archive of Ocean Data ARCOD |
description |
Geological, petrochemical, and geochemical data are reported for volcanic rocks of a Cretaceous pull-apart basin in the Tan Lu strike-slip system, Asian continental margin. A comparison of these volcanic rocks with magmatic rocks from typical Cenozoic transform margins in the western North America and rift zones of Korea made it possible to distinguish some indicator features of transform-margin volcanic rocks. Magmatic rocks from strike-slip extension zones bear island-arc, intraplate, and occasionally depleted MORB geochemical signatures. In addition to calc-alkaline rocks there are bimodal volcanic series. The rocks are characterized by high K2O, MgO, and TiO2 contents. They show variable enrichment in LILE relative to HFSE, which is typical of island-arc magmas. At the same time they are rich in compatible transition elements, which is a characteristic of intraplate magmas. Trace element distribution patterns normalized to MORB or primitive mantle usually show a negative Ta-Nb anomaly typical of suprasubduction settings. Their Ta/Nb ratio is lower, whereas Ba/Nb, Ba/La, and La/Yb ratios are higher than those of some MORB and OIB. In terms of trace element systematics, for example, Ta-Th-Hf, Ba/La-(Ba/La)_n, (La/Sm)_n-La/Hf, and others, they fall within the area of mixing of magmas from several sources (island arc, intraplate, and depleted reservoirs). Magmatic rocks of transform settings show a sigmoidal chondrite-normalized REE distribution pattern with a negative slope of LREE, depletion in MREE, and an enriched or flat HREE pattern. Magmas with mixed geochemical characteristics presumably originated in a transform margin setting in local extension zones under influence of mantle diapirs, which caused metasomatism and melting of the lithosphere at different levels, and mixing of melts from different sources in variable proportions. |
format |
Dataset |
author |
Simanenko, V P Golozubov, V V Sakhno, V G |
author_facet |
Simanenko, V P Golozubov, V V Sakhno, V G |
author_sort |
Simanenko, V P |
title |
Composition of volcanic rocks from the Alchan Basin, Northwestern Primorie |
title_short |
Composition of volcanic rocks from the Alchan Basin, Northwestern Primorie |
title_full |
Composition of volcanic rocks from the Alchan Basin, Northwestern Primorie |
title_fullStr |
Composition of volcanic rocks from the Alchan Basin, Northwestern Primorie |
title_full_unstemmed |
Composition of volcanic rocks from the Alchan Basin, Northwestern Primorie |
title_sort |
composition of volcanic rocks from the alchan basin, northwestern primorie |
publisher |
PANGAEA |
publishDate |
2006 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.788330 https://doi.org/10.1594/PANGAEA.788330 |
op_coverage |
MEDIAN LATITUDE: 46.563567 * MEDIAN LONGITUDE: 134.607200 * SOUTH-BOUND LATITUDE: 46.130000 * WEST-BOUND LONGITUDE: 134.100000 * NORTH-BOUND LATITUDE: 47.000000 * EAST-BOUND LONGITUDE: 135.100000 |
long_lat |
ENVELOPE(-67.250,-67.250,-68.151,-68.151) ENVELOPE(134.100000,135.100000,47.000000,46.130000) |
geographic |
Bear Island |
geographic_facet |
Bear Island |
genre |
Bear Island |
genre_facet |
Bear Island |
op_source |
Far East Geological Institute, Far East Division, Russian Academy of Sciences Supplement to: Simanenko, V P; Golozubov, V V; Sakhno, V G (2006): Geochemistry of volcanic rocks from transform margins: evidence from the Alchan Basin, Northwestern Primorie. Translated from Geokhimiya, 2006, 12, 1251-1265, Geochemistry International, 44(12), 1157-1169, https://doi.org/10.1134/S0016702906120019 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.788330 https://doi.org/10.1594/PANGAEA.788330 |
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.788330 https://doi.org/10.1134/S0016702906120019 |
_version_ |
1766372125383327744 |