Stratigraphy of the Pliocene Sorsdal Formation, Marine Plain, Vestfold Hills, East Antarctica
The Sorsdal Formation and one member, Graveyard Sandstone Member constitute a sedimentary sequence covering approximately 10 km2 of Marine Plain, Vestfold Hills, East Antarctica. The new Formation consists dominantly of friable diatomaceous siltstone and sandstone with dark limestone lenses. It is i...
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ftunivtasecite:oai:ecite.utas.edu.au:20651 2023-05-15T13:59:07+02:00 Stratigraphy of the Pliocene Sorsdal Formation, Marine Plain, Vestfold Hills, East Antarctica Quilty, PG Lirio, JM Jillett, D 2000 https://doi.org/10.1017/S0954102000000262 http://ecite.utas.edu.au/20651 en eng CAMBRIDGE UNIV PRESS http://dx.doi.org/10.1017/S0954102000000262 Quilty, PG and Lirio, JM and Jillett, D, Stratigraphy of the Pliocene Sorsdal Formation, Marine Plain, Vestfold Hills, East Antarctica, Antarctic Science, 12, (2) pp. 205-216. ISSN 0954-1020 (2000) [Refereed Article] http://ecite.utas.edu.au/20651 Earth Sciences Geology Stratigraphy (incl. Biostratigraphy and Sequence Stratigraphy) Refereed Article PeerReviewed 2000 ftunivtasecite https://doi.org/10.1017/S0954102000000262 2019-12-13T21:03:01Z The Sorsdal Formation and one member, Graveyard Sandstone Member constitute a sedimentary sequence covering approximately 10 km2 of Marine Plain, Vestfold Hills, East Antarctica. The new Formation consists dominantly of friable diatomaceous siltstone and sandstone with dark limestone lenses. It is in situ, essentially horizontal, 7.2 m thick in its type section and lies less than 25 m a.s.l. Graveyard Sandstone Member occurs near the top of the formation, is highly lithified sandy diamictite, 30-50 cm thick and widespread through the Marine Plain region. Using diatoms, the Formation is Early Pliocene in age (Fragilariopsis barronii; 4.5-4.1 Ma). The Graveyard Sandstone Member probably was deposited during the Gilbert Chron interval (lower Chron 2Ar or C3n.1r) of reversed magnetic polarity. The Sorsdal Formation contains fossil cetaceans and a diverse and well-preserved invertebrate fauna. Foraminifera are rare partly because of diagenesis, but include Ammoelphidiella antarctica. No evidence of coeval terrestrial vegetation has been recovered. The deposit accumulated in a series of small bays probably in an environment warmer than exists in the region today. There is no lithological evidence of glacial influence except in Graveyard Sandstone Member that may represent local glacial influence in a shallow marine to intertidal environment. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica East Antarctica eCite UTAS (University of Tasmania) East Antarctica Vestfold Hills Vestfold Marine Plain ENVELOPE(78.132,78.132,-68.631,-68.631) Antarctic Science 12 2 205 216 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Geology Stratigraphy (incl. Biostratigraphy and Sequence Stratigraphy) |
spellingShingle |
Earth Sciences Geology Stratigraphy (incl. Biostratigraphy and Sequence Stratigraphy) Quilty, PG Lirio, JM Jillett, D Stratigraphy of the Pliocene Sorsdal Formation, Marine Plain, Vestfold Hills, East Antarctica |
topic_facet |
Earth Sciences Geology Stratigraphy (incl. Biostratigraphy and Sequence Stratigraphy) |
description |
The Sorsdal Formation and one member, Graveyard Sandstone Member constitute a sedimentary sequence covering approximately 10 km2 of Marine Plain, Vestfold Hills, East Antarctica. The new Formation consists dominantly of friable diatomaceous siltstone and sandstone with dark limestone lenses. It is in situ, essentially horizontal, 7.2 m thick in its type section and lies less than 25 m a.s.l. Graveyard Sandstone Member occurs near the top of the formation, is highly lithified sandy diamictite, 30-50 cm thick and widespread through the Marine Plain region. Using diatoms, the Formation is Early Pliocene in age (Fragilariopsis barronii; 4.5-4.1 Ma). The Graveyard Sandstone Member probably was deposited during the Gilbert Chron interval (lower Chron 2Ar or C3n.1r) of reversed magnetic polarity. The Sorsdal Formation contains fossil cetaceans and a diverse and well-preserved invertebrate fauna. Foraminifera are rare partly because of diagenesis, but include Ammoelphidiella antarctica. No evidence of coeval terrestrial vegetation has been recovered. The deposit accumulated in a series of small bays probably in an environment warmer than exists in the region today. There is no lithological evidence of glacial influence except in Graveyard Sandstone Member that may represent local glacial influence in a shallow marine to intertidal environment. |
format |
Article in Journal/Newspaper |
author |
Quilty, PG Lirio, JM Jillett, D |
author_facet |
Quilty, PG Lirio, JM Jillett, D |
author_sort |
Quilty, PG |
title |
Stratigraphy of the Pliocene Sorsdal Formation, Marine Plain, Vestfold Hills, East Antarctica |
title_short |
Stratigraphy of the Pliocene Sorsdal Formation, Marine Plain, Vestfold Hills, East Antarctica |
title_full |
Stratigraphy of the Pliocene Sorsdal Formation, Marine Plain, Vestfold Hills, East Antarctica |
title_fullStr |
Stratigraphy of the Pliocene Sorsdal Formation, Marine Plain, Vestfold Hills, East Antarctica |
title_full_unstemmed |
Stratigraphy of the Pliocene Sorsdal Formation, Marine Plain, Vestfold Hills, East Antarctica |
title_sort |
stratigraphy of the pliocene sorsdal formation, marine plain, vestfold hills, east antarctica |
publisher |
CAMBRIDGE UNIV PRESS |
publishDate |
2000 |
url |
https://doi.org/10.1017/S0954102000000262 http://ecite.utas.edu.au/20651 |
long_lat |
ENVELOPE(78.132,78.132,-68.631,-68.631) |
geographic |
East Antarctica Vestfold Hills Vestfold Marine Plain |
geographic_facet |
East Antarctica Vestfold Hills Vestfold Marine Plain |
genre |
Antarc* Antarctic Science Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Science Antarctica East Antarctica |
op_relation |
http://dx.doi.org/10.1017/S0954102000000262 Quilty, PG and Lirio, JM and Jillett, D, Stratigraphy of the Pliocene Sorsdal Formation, Marine Plain, Vestfold Hills, East Antarctica, Antarctic Science, 12, (2) pp. 205-216. ISSN 0954-1020 (2000) [Refereed Article] http://ecite.utas.edu.au/20651 |
op_doi |
https://doi.org/10.1017/S0954102000000262 |
container_title |
Antarctic Science |
container_volume |
12 |
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2 |
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205 |
op_container_end_page |
216 |
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1766267510095609856 |