Tectonic history of mid-Miocene to present southern Victoria Land Basin, inferred from seismic stratigraphy in McMurdo Sound, Antarctica

New and existing seismic reflection data in southern McMurdo Sound have been used to investigateNeogene tectonic history of the Terror Rift adjacent to the Transantarctic Mountains and along the western margin of the West Antarctic Rift System. Seismic data image a young rifting episode that is larg...

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Bibliographic Details
Published in:Tectonic History of Mid-Miocene to Present Southern Victoria Land Basin, Inferred from Seismic Stratigraphy in McMurdo Sound, Antarctica
Main Authors: Henrys, S, Wilson, T, Whittaker, J, Fielding, C, Hall, J, Naish, T
Format: Conference Object
Language:English
Published: US Geological Survey 2007
Subjects:
Earth Sciences
Geology
Marine Geoscience
Antarctic
McMurdo Sound
Ross Island
Transantarctic Mountains
Victoria Land
Antarc*
Antarctica
Online Access:http://pubs.usgs.gov/of/2007/1047/srp/srp049/of2007-1047srp049.pdf
https://doi.org/10.3133/of2007-1047.srp049
http://ecite.utas.edu.au/84453
Description
Summary:New and existing seismic reflection data in southern McMurdo Sound have been used to investigateNeogene tectonic history of the Terror Rift adjacent to the Transantarctic Mountains and along the western margin of the West Antarctic Rift System. Seismic data image a young rifting episode that is largely unsampled by CRP and CIROS drill holes. Data reveal up to 3.5 km of post middle Miocene strata deposited in this part of the NNW-SSE trending Terror Rift basin. Mapped fault trends in the southern Terror Rift parallel the axis of the basin and areprominent in a 40 km wide zone north of Ross Island. Displacement on individual faults in this zone can exceed 100m and faults collectively accommodate approximately 10-15 km of middle Miocene to recent extension.

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