K-Ar age determination of Paleozoic rock samples from northern Victoria Land, Antarctica ...

K-Ar ages of 82 slate and schist (white-mica-rich whole rock) samples are reported for Late Precambrian-Early Ordovician metamorphic rocks of the Wilson, Bowers and Robertson Bay terranes of northern Victoria Land. These are amalgamated in two vertical sections along composite NE-SW horizontal profi...

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Main Author: Adams, Christopher J
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 2007
Subjects:
Online Access:https://dx.doi.org/10.1594/pangaea.605207
https://doi.pangaea.de/10.1594/PANGAEA.605207
id ftdatacite:10.1594/pangaea.605207
record_format openpolar
spelling ftdatacite:10.1594/pangaea.605207 2024-09-15T17:47:12+00:00 K-Ar age determination of Paleozoic rock samples from northern Victoria Land, Antarctica ... Adams, Christopher J 2007 application/zip https://dx.doi.org/10.1594/pangaea.605207 https://doi.pangaea.de/10.1594/PANGAEA.605207 en eng PANGAEA Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 Outcrop sample article Collection Supplementary Publication Series of Datasets 2007 ftdatacite https://doi.org/10.1594/pangaea.605207 2024-08-01T10:55:41Z K-Ar ages of 82 slate and schist (white-mica-rich whole rock) samples are reported for Late Precambrian-Early Ordovician metamorphic rocks of the Wilson, Bowers and Robertson Bay terranes of northern Victoria Land. These are amalgamated in two vertical sections along composite NE-SW horizontal profiles across (1) Oates Coast in the north, and (2) Terra Nova Bay area in the south. The ages are in the range 328-517 Ma. Both profiles show some age variation with altitude, but more importantly, they define an inverted wedge shaped pattern, reflecting a „pop-up“ strucure. This is oriented NW-SE at the eastern margin of the Wilson terrane, and the edges coincide with the Exiles and Wilson Thrusts which cross the region. Ages inside the "pop-up" structure are younger, ca. 460-480 Ma, than those along its eastern and western flanks, ca. 490-520 Ma. The K-Ar age patterns thus demonstrate a late Ross Orogenic age (ca. 460 Ma) for this structure, which may be associated with assembly of the Wilson and Bowers terranes. ... : Supplement to: Adams, Christopher J (2006): Style of uplift of Paleozoic terranes in northern Victoria Land, Antarctica: Evidence from K-Ar age patterns. In: Fütterer, D K, Damaske, D, Kleinschmidt, G, Miller, H & Tessensohn, F (eds.), Antarctica: contributions to global earth sciences, Springer, Berlin, Heidelberg, New York, 205-214 ... Article in Journal/Newspaper Antarc* Antarctica Victoria Land DataCite
institution Open Polar
collection DataCite
op_collection_id ftdatacite
language English
topic Outcrop sample
spellingShingle Outcrop sample
Adams, Christopher J
K-Ar age determination of Paleozoic rock samples from northern Victoria Land, Antarctica ...
topic_facet Outcrop sample
description K-Ar ages of 82 slate and schist (white-mica-rich whole rock) samples are reported for Late Precambrian-Early Ordovician metamorphic rocks of the Wilson, Bowers and Robertson Bay terranes of northern Victoria Land. These are amalgamated in two vertical sections along composite NE-SW horizontal profiles across (1) Oates Coast in the north, and (2) Terra Nova Bay area in the south. The ages are in the range 328-517 Ma. Both profiles show some age variation with altitude, but more importantly, they define an inverted wedge shaped pattern, reflecting a „pop-up“ strucure. This is oriented NW-SE at the eastern margin of the Wilson terrane, and the edges coincide with the Exiles and Wilson Thrusts which cross the region. Ages inside the "pop-up" structure are younger, ca. 460-480 Ma, than those along its eastern and western flanks, ca. 490-520 Ma. The K-Ar age patterns thus demonstrate a late Ross Orogenic age (ca. 460 Ma) for this structure, which may be associated with assembly of the Wilson and Bowers terranes. ... : Supplement to: Adams, Christopher J (2006): Style of uplift of Paleozoic terranes in northern Victoria Land, Antarctica: Evidence from K-Ar age patterns. In: Fütterer, D K, Damaske, D, Kleinschmidt, G, Miller, H & Tessensohn, F (eds.), Antarctica: contributions to global earth sciences, Springer, Berlin, Heidelberg, New York, 205-214 ...
format Article in Journal/Newspaper
author Adams, Christopher J
author_facet Adams, Christopher J
author_sort Adams, Christopher J
title K-Ar age determination of Paleozoic rock samples from northern Victoria Land, Antarctica ...
title_short K-Ar age determination of Paleozoic rock samples from northern Victoria Land, Antarctica ...
title_full K-Ar age determination of Paleozoic rock samples from northern Victoria Land, Antarctica ...
title_fullStr K-Ar age determination of Paleozoic rock samples from northern Victoria Land, Antarctica ...
title_full_unstemmed K-Ar age determination of Paleozoic rock samples from northern Victoria Land, Antarctica ...
title_sort k-ar age determination of paleozoic rock samples from northern victoria land, antarctica ...
publisher PANGAEA
publishDate 2007
url https://dx.doi.org/10.1594/pangaea.605207
https://doi.pangaea.de/10.1594/PANGAEA.605207
genre Antarc*
Antarctica
Victoria Land
genre_facet Antarc*
Antarctica
Victoria Land
op_rights Creative Commons Attribution 3.0 Unported
https://creativecommons.org/licenses/by/3.0/legalcode
cc-by-3.0
op_doi https://doi.org/10.1594/pangaea.605207
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