Integration of high- and intermediate-resolution seismic data sets with MCS data to examine the glacial record of Eastern Basin (Ross Sea)

Author(s): De Santis, L.; Anderson, J. B.; Shipp, S. S.; Brancolini, Giuliano; Zayatz, I.
Author Affiliation(s): Primary:
Universita di Parma, Istituto di Geologia, Parma, Italy
British Antarctic Survey, United Kingdom
Ohio State University, United States
Osservatorio Geofisico Sperimentale, Italy
Rice University, United States
State Enterprise Marine Arctic Geological Expedition, Russian Federation
Volume Title: Antarctic continental margin; geophysical and geological stratigraphic records of Cenozoic glaciation, paleoenvironments, and sea-level change
Volume Author(s): Cooper, Alan K., editor; Barker, Peter F.; Webb, Peter N.; Brancolini, Giuliano
Source: Terra Antartica, 1(2), p.359-361; The Antarctic Offshore Acoustic Stratigraphy Project (ANTOSTRAT) symposium, Siena, Italy, Aug. 21-27, 1994, edited by Alan K. Cooper, Peter F. Barker, Peter N. Webb and Giuliano Brancolini. Publisher: Universita degli Studi di Siena, Sezione Scienze della Terra, Siena, Italy. ISSN: 1122-8628
Note: In English. 9 refs.; illus.
Summary: Analysis of the character of the seismic units, their thickness, regional distribution, and type of shelf margin progradation, shows that the continental shelf of the eastern sector of Ross Sea has experienced several ice sheet groundings since the early Miocene. The interaction of several factors, such as the frequency of sea-level change and variations in the volume of ice-sheets, has contributed to the overall seismic pattern of the margin. Lower frequency sea-level change during the Miocene, relative to the Plio-Pleistocene, resulted in greater duration of grounding events on the continental shelf and thicker subglacial and glacial marine sequences. It is suggested that more emphasis should be given to collecting high- to intermediate-resolution seismic reflection records to investigate the Cenozoic glacial history of the antarctic margins.
Year of Publication: 1994
Research Program: DSDP Deep Sea Drilling Project
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; 20 Geophysics, Applied; Cenozoic; Continental margin; Continental shelf; DSDP Site 270; Deep Sea Drilling Project; Eastern Basin; Erosion; Geophysical methods; Geophysical profiles; Geophysical surveys; Glacial environment; Glacial erosion; Glaciation; High-resolution methods; Inner shelf; Leg 28; Oligocene; Paleoenvironment; Paleogene; Progradation; Ross Sea; Seismic methods; Seismic profiles; Seismic stratigraphy; Southern Ocean; Surveys; Tertiary
Coordinates: S772629 S772629 W1783011 W1783011
Record ID: 2013061874
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from the Antarctic Bibliography, United States