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The AAPG/Datapages Combined Publications Database

AAPG Special Volumes

Abstract


Pub. Id: A139 (1990)

First Page: 13

Last Page: 29

Book Title: SG 31: Antarctica as an Exploration Frontier--Hydrocarbon Potential, Geology, and Hazards

Article/Chapter: Sequence Stratigraphy of the Bransfield Basin, Antarctica: Implications for Tectonic History and Hydrocarbon Potential: Chapter 2

Subject Group: Basin or Areal Analysis or Evaluation

Spec. Pub. Type: Studies in Geology

Pub. Year: 1990

Author(s): John D. Jeffers (*), John B. Anderson

Abstract:

Application of sequence stratigraphic concepts to seismic reflection profiles from the Bransfield Basin indicates that this modern backarc basin began to form during the waning stages of subduction at the South Shetland Trench at about 4 Ma. Two distinct systems tracts stack to form depositional sequences; organic-rich hemipelagic sediments drape the basin during highstands/interglacial periods, whereas large volumes of glacially eroded terrigenous sediments prograde into the basin during lowstands/glacial maxima. Although the juxtaposition of organic-rich diatomaceous muds with the high heat flow of the backarc spreading system is favorable for the generation of hydrocarbons, reservoir quality sands and suitable traps have yet to be identified.

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