Publication Date

1982

Document Type

Dissertation/Thesis

First Advisor

McGinnis, Lyle D. (Lyle David), 1931-2017

Degree Name

M.S. (Master of Science)

Department

Department of Geology

LCSH

Geophysics--Antarctica||Geology--Antarctica||Seismic reflection method||Seismic refraction method

Abstract

Seismic refraction and reflection data have been used to develop geophysical and geologic profiles across McMurdo Sound, from Cone Hill on Hut Point Peninsula, Ross Island in the east to the Strand Moraines in the west. Reflection stations were placed every 1 km to obtain bathymetric information, and refraction stations were placed every 5 km. Sediment velocities range from 1.8 km/sec for a thin veneer along the bottom of the sound to 4.4 km/sec for sandstone. A basement refractor with velocities ranging from 4.7 to 5.6 km/sec is observed at depths averaging 3 kms; an intrabasement refractor with velocities greater than 6.2 km/sec is found at depths averaging 5.7 km. The latter refractor is interpreted as the upper boundary of the lower crust. A normal fault located between stations Blue West and Yellow offsets all units with the down-faulted block being on the east.

Comments

Includes bibliographical references.||Includes illustrations.

Extent

vi, 57 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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