A PRELIMINARY SURVEY BY A SEISMIC PROFILING ACROSS THE GUNNERUS RIDGE OFF THE RIISER-LARSEN PENINSULA, ANTARCTICA

The following conclusion can be drawn from the interpretation of sparker sonic prospecting records obtained on the Gunnerus Ridge, off the Riiser-Larsen Peninsula, East Antarctica. 1) The Gunnerus Ridge may be a horst composed of a continental crust, 2) a graben-like depression lies to the east of t...

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Bibliographic Details
Main Authors: モリワキ キイチ, マツオカ ノリカズ, ヨシダ ヨシオ, Kiichi MORIWAKI, Norikazu MATSUOKA, Yoshio YOSHIDA
Format: Report
Language:English
Published: National Institute of Polar Research 1987
Subjects:
East Antarctica
Riiser-Larsen
Gunnerus Ridge
Riiser-Larsen Peninsula
Antarc*
Antarctica
Ice Sheet
Online Access:https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2531
http://id.nii.ac.jp/1291/00002531/
https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2531&item_no=1&attribute_id=18&file_no=1
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Summary:The following conclusion can be drawn from the interpretation of sparker sonic prospecting records obtained on the Gunnerus Ridge, off the Riiser-Larsen Peninsula, East Antarctica. 1) The Gunnerus Ridge may be a horst composed of a continental crust, 2) a graben-like depression lies to the east of the ridge, and it seems to be connected with the inferred fault system in the central part of Lutzow-Holm Bay, 3) topography or sediments on the ridge appear not to have been deformed by glaciation, suggesting that the maximum expansion of the past ice sheet might not have reached so far as 67°45'S in latitude on the Gunnerus Ridge 725m in present depth.

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