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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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Published in: | International geology review 2019-08, Vol.61 (12), p.1429-1445 |
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creator | Yi, Sang-Bong Lee, Mi Jung Park, Sung-Hyun Han, Seunghee Yang, Yun Seok Choi, Hakkyum |
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. |
doi_str_mv | 10.1080/00206814.2018.1514669 |
format | article |
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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.</description><identifier>ISSN: 0020-6814</identifier><identifier>EISSN: 1938-2839</identifier><identifier>DOI: 10.1080/00206814.2018.1514669</identifier><language>eng</language><publisher>Philadelphia: Taylor & Francis</publisher><subject>Antarctica ; Australian-Antarctic Ridge ; Basalt ; Carboniferous ; Cretaceous ; Deformation ; Dredging ; Gabbro ; Geochemistry ; Geologic depressions ; Glacial erratics ; Hot spots (geology) ; KR1 seamount trail ; Lava ; Magma ; Ocean floor ; ocean island basalt ; Petrology ; Polar environments ; Rhyolite ; Rhyolites ; Seafloor spreading ; Seamounts ; Sedimentary rocks ; Topography (geology) ; Trachyte ; Volcanic eruptions ; Volcanic rocks</subject><ispartof>International geology review, 2019-08, Vol.61 (12), p.1429-1445</ispartof><rights>2018 Informa UK Limited, trading as Taylor & Francis Group 2018</rights><rights>2018 Informa UK Limited, trading as Taylor & Francis Group</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a474t-cf1b7cebac11abb8fb74bc55d7aebc12b8062a62d9044b795ad2356eabeb4bb13</citedby><cites>FETCH-LOGICAL-a474t-cf1b7cebac11abb8fb74bc55d7aebc12b8062a62d9044b795ad2356eabeb4bb13</cites><orcidid>0000-0001-6253-5420</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Yi, Sang-Bong</creatorcontrib><creatorcontrib>Lee, Mi Jung</creatorcontrib><creatorcontrib>Park, Sung-Hyun</creatorcontrib><creatorcontrib>Han, Seunghee</creatorcontrib><creatorcontrib>Yang, Yun Seok</creatorcontrib><creatorcontrib>Choi, Hakkyum</creatorcontrib><title>Occurrence of ice-rafted erratics and the petrology of the KR1 seamount trail from the Australian-Antarctic Ridge</title><title>International geology review</title><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.</description><subject>Antarctica</subject><subject>Australian-Antarctic Ridge</subject><subject>Basalt</subject><subject>Carboniferous</subject><subject>Cretaceous</subject><subject>Deformation</subject><subject>Dredging</subject><subject>Gabbro</subject><subject>Geochemistry</subject><subject>Geologic depressions</subject><subject>Glacial erratics</subject><subject>Hot spots (geology)</subject><subject>KR1 seamount trail</subject><subject>Lava</subject><subject>Magma</subject><subject>Ocean floor</subject><subject>ocean island basalt</subject><subject>Petrology</subject><subject>Polar environments</subject><subject>Rhyolite</subject><subject>Rhyolites</subject><subject>Seafloor spreading</subject><subject>Seamounts</subject><subject>Sedimentary rocks</subject><subject>Topography (geology)</subject><subject>Trachyte</subject><subject>Volcanic eruptions</subject><subject>Volcanic rocks</subject><issn>0020-6814</issn><issn>1938-2839</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp9kFtLxDAQhYMouF5-ghDwuWsmTW9vLuINBUH0OUzSRCvdZp2kyP57W1dffRrmzHfOwGHsDMQSRC0uhJCirEEtpYB6CQWosmz22AKavM5knTf7bDEz2QwdsqMYP6a1VCUs2OeTtSORG6zjwfPOuozQJ9dyR4Sps5Hj0PL07vjGJQp9eNvO4Cw8PAOPDtdhHBJPhF3PPYX1z201xknpOxyy1ZCQ7BTFn7v2zZ2wA499dKe_85i93ly_XN1lj0-391erxwxVpVJmPZjKOoMWAI2pvamUsUXRVuiMBWlqUUosZdsIpUzVFNjKvCgdGmeUMZAfs_Nd7obC5-hi0h9hpGF6qaVUIFUDqp6oYkdZCjGS83pD3Rppq0HouV39166e29W_7U6-y52vG3ygNX4F6ludcNsH8oSD7aLO_4_4BkzGgtE</recordid><startdate>20190813</startdate><enddate>20190813</enddate><creator>Yi, Sang-Bong</creator><creator>Lee, Mi Jung</creator><creator>Park, Sung-Hyun</creator><creator>Han, Seunghee</creator><creator>Yang, Yun Seok</creator><creator>Choi, Hakkyum</creator><general>Taylor & Francis</general><general>Taylor & Francis Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7TN</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0001-6253-5420</orcidid></search><sort><creationdate>20190813</creationdate><title>Occurrence of ice-rafted erratics and the petrology of the KR1 seamount trail from the Australian-Antarctic Ridge</title><author>Yi, Sang-Bong ; Lee, Mi Jung ; Park, Sung-Hyun ; Han, Seunghee ; Yang, Yun Seok ; Choi, Hakkyum</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a474t-cf1b7cebac11abb8fb74bc55d7aebc12b8062a62d9044b795ad2356eabeb4bb13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Antarctica</topic><topic>Australian-Antarctic Ridge</topic><topic>Basalt</topic><topic>Carboniferous</topic><topic>Cretaceous</topic><topic>Deformation</topic><topic>Dredging</topic><topic>Gabbro</topic><topic>Geochemistry</topic><topic>Geologic depressions</topic><topic>Glacial erratics</topic><topic>Hot spots (geology)</topic><topic>KR1 seamount trail</topic><topic>Lava</topic><topic>Magma</topic><topic>Ocean floor</topic><topic>ocean island basalt</topic><topic>Petrology</topic><topic>Polar environments</topic><topic>Rhyolite</topic><topic>Rhyolites</topic><topic>Seafloor spreading</topic><topic>Seamounts</topic><topic>Sedimentary rocks</topic><topic>Topography (geology)</topic><topic>Trachyte</topic><topic>Volcanic eruptions</topic><topic>Volcanic rocks</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yi, Sang-Bong</creatorcontrib><creatorcontrib>Lee, Mi Jung</creatorcontrib><creatorcontrib>Park, Sung-Hyun</creatorcontrib><creatorcontrib>Han, Seunghee</creatorcontrib><creatorcontrib>Yang, Yun Seok</creatorcontrib><creatorcontrib>Choi, Hakkyum</creatorcontrib><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environment Abstracts</collection><jtitle>International geology review</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yi, Sang-Bong</au><au>Lee, Mi Jung</au><au>Park, Sung-Hyun</au><au>Han, Seunghee</au><au>Yang, Yun Seok</au><au>Choi, Hakkyum</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Occurrence of ice-rafted erratics and the petrology of the KR1 seamount trail from the Australian-Antarctic Ridge</atitle><jtitle>International geology review</jtitle><date>2019-08-13</date><risdate>2019</risdate><volume>61</volume><issue>12</issue><spage>1429</spage><epage>1445</epage><pages>1429-1445</pages><issn>0020-6814</issn><eissn>1938-2839</eissn><abstract>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.</abstract><cop>Philadelphia</cop><pub>Taylor & Francis</pub><doi>10.1080/00206814.2018.1514669</doi><tpages>17</tpages><orcidid>https://orcid.org/0000-0001-6253-5420</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | Antarctica Australian-Antarctic Ridge Basalt Carboniferous Cretaceous Deformation Dredging Gabbro Geochemistry Geologic depressions Glacial erratics Hot spots (geology) KR1 seamount trail Lava Magma Ocean floor ocean island basalt Petrology Polar environments Rhyolite Rhyolites Seafloor spreading Seamounts Sedimentary rocks Topography (geology) Trachyte Volcanic eruptions Volcanic rocks |
title | Occurrence of ice-rafted erratics and the petrology of the KR1 seamount trail from the Australian-Antarctic Ridge |
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