Pacific-type transform and convergent margins: igneous rocks, geochemical contrasts and discriminant diagrams
Transform margins represent lithospheric plate boundaries with horizontal sliding of the oceanic plate, which in time and space replaced the subduction-related convergent margins. This happened due to the following: ridge-crest–trench intersection or ridge death along a continental margin (recent Ca...
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ftdatacite:10.6084/m9.figshare.13358526 2023-05-15T14:06:39+02:00 Pacific-type transform and convergent margins: igneous rocks, geochemical contrasts and discriminant diagrams Grebennikov, Andrei V. Khanchuk, Alexander I. 2020 https://dx.doi.org/10.6084/m9.figshare.13358526 https://tandf.figshare.com/articles/dataset/Pacific-type_transform_and_convergent_margins_igneous_rocks_geochemical_contrasts_and_discriminant_diagrams/13358526 unknown Taylor & Francis https://dx.doi.org/10.1080/00206814.2020.1848646 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Space Science Microbiology FOS Biological sciences Genetics Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology 69999 Biological Sciences not elsewhere classified Marine Biology Cancer Inorganic Chemistry Science Policy dataset Dataset 2020 ftdatacite https://doi.org/10.6084/m9.figshare.13358526 https://doi.org/10.1080/00206814.2020.1848646 2021-11-05T12:55:41Z Transform margins represent lithospheric plate boundaries with horizontal sliding of the oceanic plate, which in time and space replaced the subduction-related convergent margins. This happened due to the following: ridge-crest–trench intersection or ridge death along a continental margin (recent California and Baja California, Queen Charlotte–Northern Cordilleran, west of the Antarctic Peninsula, and probably Late Miocene–Pleistocene southernmost South America); change in the direction of oceanic plate movement (western Aleutian–Komandorsk and southernmost tip of the Andes); and island arc-continent collision (New Guinea Island). Post-subduction magmatism is related to a slab window that resulted from the spreading ridge collision (subduction) with a continental margin or slab tear formation after subduction cessation. Igneous magmatic series formed above the slab window or slab tear are similar in composition and show diversity of tholeiitic (sub-alkaline), alkaline, or even calc-alkaline and peraluminous rocks. The comprehensive geochemical dataset for igneous rocks (more than 2400 analyses) from the recent model geodynamic settings allowed us to build discriminant diagrams for the petrogenic oxides TiO 2 × 10–Fe 2 O 3 Tot –MgO and trace elements Nb*5–Ba/La–Yb*10, which show distinctive rock features present on both convergent and Pacific-type transform margins. The author’s diagrams are capable of distinguishing volcanic and plutonic rocks formed above the subduction zones at an island arc and continental margin (related to convergent margins), from those formed in the strike-slip tectonic setting of transform margins along continents or island arcs. Dataset Antarc* Antarctic Antarctic Peninsula DataCite Metadata Store (German National Library of Science and Technology) Antarctic Antarctic Peninsula Baja Pacific Queen Charlotte ENVELOPE(-132.088,-132.088,53.255,53.255) The Antarctic |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Space Science Microbiology FOS Biological sciences Genetics Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology 69999 Biological Sciences not elsewhere classified Marine Biology Cancer Inorganic Chemistry Science Policy |
spellingShingle |
Space Science Microbiology FOS Biological sciences Genetics Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology 69999 Biological Sciences not elsewhere classified Marine Biology Cancer Inorganic Chemistry Science Policy Grebennikov, Andrei V. Khanchuk, Alexander I. Pacific-type transform and convergent margins: igneous rocks, geochemical contrasts and discriminant diagrams |
topic_facet |
Space Science Microbiology FOS Biological sciences Genetics Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology 69999 Biological Sciences not elsewhere classified Marine Biology Cancer Inorganic Chemistry Science Policy |
description |
Transform margins represent lithospheric plate boundaries with horizontal sliding of the oceanic plate, which in time and space replaced the subduction-related convergent margins. This happened due to the following: ridge-crest–trench intersection or ridge death along a continental margin (recent California and Baja California, Queen Charlotte–Northern Cordilleran, west of the Antarctic Peninsula, and probably Late Miocene–Pleistocene southernmost South America); change in the direction of oceanic plate movement (western Aleutian–Komandorsk and southernmost tip of the Andes); and island arc-continent collision (New Guinea Island). Post-subduction magmatism is related to a slab window that resulted from the spreading ridge collision (subduction) with a continental margin or slab tear formation after subduction cessation. Igneous magmatic series formed above the slab window or slab tear are similar in composition and show diversity of tholeiitic (sub-alkaline), alkaline, or even calc-alkaline and peraluminous rocks. The comprehensive geochemical dataset for igneous rocks (more than 2400 analyses) from the recent model geodynamic settings allowed us to build discriminant diagrams for the petrogenic oxides TiO 2 × 10–Fe 2 O 3 Tot –MgO and trace elements Nb*5–Ba/La–Yb*10, which show distinctive rock features present on both convergent and Pacific-type transform margins. The author’s diagrams are capable of distinguishing volcanic and plutonic rocks formed above the subduction zones at an island arc and continental margin (related to convergent margins), from those formed in the strike-slip tectonic setting of transform margins along continents or island arcs. |
format |
Dataset |
author |
Grebennikov, Andrei V. Khanchuk, Alexander I. |
author_facet |
Grebennikov, Andrei V. Khanchuk, Alexander I. |
author_sort |
Grebennikov, Andrei V. |
title |
Pacific-type transform and convergent margins: igneous rocks, geochemical contrasts and discriminant diagrams |
title_short |
Pacific-type transform and convergent margins: igneous rocks, geochemical contrasts and discriminant diagrams |
title_full |
Pacific-type transform and convergent margins: igneous rocks, geochemical contrasts and discriminant diagrams |
title_fullStr |
Pacific-type transform and convergent margins: igneous rocks, geochemical contrasts and discriminant diagrams |
title_full_unstemmed |
Pacific-type transform and convergent margins: igneous rocks, geochemical contrasts and discriminant diagrams |
title_sort |
pacific-type transform and convergent margins: igneous rocks, geochemical contrasts and discriminant diagrams |
publisher |
Taylor & Francis |
publishDate |
2020 |
url |
https://dx.doi.org/10.6084/m9.figshare.13358526 https://tandf.figshare.com/articles/dataset/Pacific-type_transform_and_convergent_margins_igneous_rocks_geochemical_contrasts_and_discriminant_diagrams/13358526 |
long_lat |
ENVELOPE(-132.088,-132.088,53.255,53.255) |
geographic |
Antarctic Antarctic Peninsula Baja Pacific Queen Charlotte The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Baja Pacific Queen Charlotte The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_relation |
https://dx.doi.org/10.1080/00206814.2020.1848646 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.13358526 https://doi.org/10.1080/00206814.2020.1848646 |
_version_ |
1766278657830027264 |