Core- and log-based investigations of Neogene deposition on continental margins of the Southern Ocean

Author(s): Handwerger, David Allen
Source: 234p. Institution: University of Utah, Salt Lake City, UT, United States
Note: In English. Doctoral dissertation
Summary: Geophysical studies were undertaken during two Ocean Drilling Program cruises in and around the Southern Ocean. Log data were collected during Legs 181 and 188, and rock-magnetic data were collected from samples taken during Leg 181. A combination of downhole logging and continuous-core geophysical measurements was used to create synthetic seismograms to ground-truth seismic profiles recorded in Prydz Bay, Antarctica, and to derive high-resolution mass accumulation rate (MAR) curves of Neogene deposition around the margins of the Southern Ocean. The results of this study were used to document changes in the intensity of the Deep Western Boundary Current east of New Zealand, expansion of the East Antarctic ice sheet and acceleration of the tectonic uplift of the Southern Alps. (modified jour. abstr.)
Year of Publication: 2003
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; 20 Geophysics, Applied; Antarctic ice sheet; Antarctica; Australasia; Australia; Cenozoic; Continental drift; Continental margin; Geophysical methods; Geophysical profiles; Geophysical surveys; Grain size; Leg 181; Leg 188; Magnetization; Marine sediments; Neogene; New Zealand; Ocean Drilling Program; Paleo-oceanography; Paleoclimatology; Paleogeography; Paleomagnetism; Prydz Bay; Sediments; Seismic methods; Seismic profiles; Seismograms; Southern Ocean; Statistical analysis; Surveys; Synthetic seismograms; Tertiary; Well logs
Coordinates: S674500 S640000 E0750000 E0670000
Record ID: 2004005506
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute.