Occurrence of ice-rafted erratics and the petrology of the KR1 seamount trail from the Australian–Antarctic Ridge
A multi-disciplinary study of the KR1 segment of the Australian–Antarctic Ridge has been conducted since 2011. We present geochemical and age dating results for samples dredged from three sites on the KR1 seamount trail. The majority of the samples are alkaline ocean island basalts with subdominant...
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Taylor & Francis
2018
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ftdatacite:10.6084/m9.figshare.7072871 2023-05-15T13:34:46+02:00 Occurrence of ice-rafted erratics and the petrology of the KR1 seamount trail from the Australian–Antarctic Ridge Sang-Bong Yi Lee, Mi Jung Park, Sung-Hyun Seunghee Han Yang, Yun Seok Hakkyum Choi 2018 https://dx.doi.org/10.6084/m9.figshare.7072871 https://tandf.figshare.com/articles/Occurrence_of_ice-rafted_erratics_and_the_petrology_of_the_KR1_seamount_trail_from_the_Australian_Antarctic_Ridge/7072871 unknown Taylor & Francis https://dx.doi.org/10.1080/00206814.2018.1514669 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Genetics FOS Biological sciences Molecular 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 Inorganic Chemistry dataset Dataset 2018 ftdatacite https://doi.org/10.6084/m9.figshare.7072871 https://doi.org/10.1080/00206814.2018.1514669 2021-11-05T12:55:41Z A multi-disciplinary study of the KR1 segment of the Australian–Antarctic Ridge has been conducted since 2011. We present geochemical and age dating results for samples dredged from three sites on the KR1 seamount trail. The majority of the samples are alkaline ocean island basalts with subdominant enriched tholeiites. The samples from the DG05 bathymetric depression include ice-rafted erratics from Antarctica, which consist of gabbro, diabase, various granitoids, volcanic rocks such as trachyte and rhyolite and deformed or undeformed sedimentary rocks. The main provenance of glacial erratics is considered to be the Ross Sea region. However, Carboniferous to Cretaceous ages of erratics indicate that some of these may originate from the western regions of West Antarctica. Based on the size and topography of the volcanic features and geochemical characteristics of the alkaline ocean island basalts (La/Sm N = 2.62–3.88; Tb/Yb N = 1.54–2.67) and the enriched tholeiites, the KR1 seamount trail is interpreted to be a submarine hotspot chain that is the product of alkaline volcanic eruption and seafloor spreading. Dataset Antarc* Antarctic Antarctica Ross Sea West Antarctica Ocean Island DataCite Metadata Store (German National Library of Science and Technology) Antarctic Australian Antarctic Ridge ENVELOPE(110.000,110.000,-50.000,-50.000) Ross Sea West Antarctica |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Genetics FOS Biological sciences Molecular 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 Inorganic Chemistry |
spellingShingle |
Genetics FOS Biological sciences Molecular 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 Inorganic Chemistry Sang-Bong Yi Lee, Mi Jung Park, Sung-Hyun Seunghee Han Yang, Yun Seok Hakkyum Choi Occurrence of ice-rafted erratics and the petrology of the KR1 seamount trail from the Australian–Antarctic Ridge |
topic_facet |
Genetics FOS Biological sciences Molecular 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 Inorganic Chemistry |
description |
A multi-disciplinary study of the KR1 segment of the Australian–Antarctic Ridge has been conducted since 2011. We present geochemical and age dating results for samples dredged from three sites on the KR1 seamount trail. The majority of the samples are alkaline ocean island basalts with subdominant enriched tholeiites. The samples from the DG05 bathymetric depression include ice-rafted erratics from Antarctica, which consist of gabbro, diabase, various granitoids, volcanic rocks such as trachyte and rhyolite and deformed or undeformed sedimentary rocks. The main provenance of glacial erratics is considered to be the Ross Sea region. However, Carboniferous to Cretaceous ages of erratics indicate that some of these may originate from the western regions of West Antarctica. Based on the size and topography of the volcanic features and geochemical characteristics of the alkaline ocean island basalts (La/Sm N = 2.62–3.88; Tb/Yb N = 1.54–2.67) and the enriched tholeiites, the KR1 seamount trail is interpreted to be a submarine hotspot chain that is the product of alkaline volcanic eruption and seafloor spreading. |
format |
Dataset |
author |
Sang-Bong Yi Lee, Mi Jung Park, Sung-Hyun Seunghee Han Yang, Yun Seok Hakkyum Choi |
author_facet |
Sang-Bong Yi Lee, Mi Jung Park, Sung-Hyun Seunghee Han Yang, Yun Seok Hakkyum Choi |
author_sort |
Sang-Bong Yi |
title |
Occurrence of ice-rafted erratics and the petrology of the KR1 seamount trail from the Australian–Antarctic Ridge |
title_short |
Occurrence of ice-rafted erratics and the petrology of the KR1 seamount trail from the Australian–Antarctic Ridge |
title_full |
Occurrence of ice-rafted erratics and the petrology of the KR1 seamount trail from the Australian–Antarctic Ridge |
title_fullStr |
Occurrence of ice-rafted erratics and the petrology of the KR1 seamount trail from the Australian–Antarctic Ridge |
title_full_unstemmed |
Occurrence of ice-rafted erratics and the petrology of the KR1 seamount trail from the Australian–Antarctic Ridge |
title_sort |
occurrence of ice-rafted erratics and the petrology of the kr1 seamount trail from the australian–antarctic ridge |
publisher |
Taylor & Francis |
publishDate |
2018 |
url |
https://dx.doi.org/10.6084/m9.figshare.7072871 https://tandf.figshare.com/articles/Occurrence_of_ice-rafted_erratics_and_the_petrology_of_the_KR1_seamount_trail_from_the_Australian_Antarctic_Ridge/7072871 |
long_lat |
ENVELOPE(110.000,110.000,-50.000,-50.000) |
geographic |
Antarctic Australian Antarctic Ridge Ross Sea West Antarctica |
geographic_facet |
Antarctic Australian Antarctic Ridge Ross Sea West Antarctica |
genre |
Antarc* Antarctic Antarctica Ross Sea West Antarctica Ocean Island |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea West Antarctica Ocean Island |
op_relation |
https://dx.doi.org/10.1080/00206814.2018.1514669 |
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.7072871 https://doi.org/10.1080/00206814.2018.1514669 |
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1766057300464762880 |