Januszczak, Nicole N. (2004): Depositional successions on glaciated continental margins; the Cenozoic of Antarctica and the Neoproterozoic of Rodinia

Leg/Site/Hole:
ODP 188
Identifier:
2005-032565
georefid

0-612-91745-2
isbn

Creator:
Januszczak, Nicole N.
author

Identification:
Depositional successions on glaciated continental margins; the Cenozoic of Antarctica and the Neoproterozoic of Rodinia
2004
478 pp.
This thesis is presented in two parts. The first half deals with the Cenozoic glacial record of Antarctica, and the second half focuses on the Neoproterozoic glacial record of Rodinia. The glacially-influenced Cenozoic continental margin of Antarctica shows a large-scale subsurface seismic stratigraphy consisting of flat-lying topsets recording episodic aggradation of the continental shelf, that rest on seaward-dipping, wedge-shaped foresets formed by the progradation of the continental slope. Strata form topsets record aggradation by till deposition alternating with glacial-marine sedimentation. Strata from foresets record bedris flows and turbidity currents on the active slope close to a source of poorly-sorted glacial debris such as an ice sheet margin reaching the shelf break. (modif. auth. abstr.)
English
Thesis or Dissertation
Coverage:Geographic coordinates:
North:-64.0000
West:67.0000East: 81.0000
South:-69.0000

Stratigraphy; Applied geophysics; ancient ice ages; Cenozoic; clastic rocks; depositional environment; diamictite; facies; geophysical methods; geophysical profiles; geophysical surveys; glacial environment; glacial geology; glaciation; Leg 188; Neoproterozoic; Ocean Drilling Program; paleoclimatology; paleoenvironment; plate tectonics; Precambrian; Proterozoic; Prydz Bay; rifting; Rodinia; sedimentary rocks; seismic methods; seismic profiles; seismic stratigraphy; Southern Ocean; surveys; upper Precambrian;

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