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Metadata
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ID
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E-1-94-AN
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Also Known As
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94039
ACRUP
EXPLPRNA-94
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Abstract
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Osservatorio Geolisco Sperimentate, Italy. Chief Scientists:
Alan Cooper, G. Brancolini. Geophysical data
(bottomseismometer, 48channel) of field activity E-1-94-AN in
Ross Sea and adjacent Transantarctic Mountains, Antarctica
from 01/07/1994 to 03/03/1994
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Organization
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Osservatorio Geolisco Sperimentate, Italy
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Project/Theme
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Antarctic Crustal Profile Seismic Project (ACRUP)
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Chief Scientist
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Alan Cooper
G. Brancolini
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Activity Type
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Geophysical
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Platform
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Explora
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Area of Operation
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Ross Sea and adjacent Transantarctic Mountains, Antarctica
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Location map
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Bounding Coordinates
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-77.07168
-179.93667 -169.22550
-77.12175
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Dates
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01/07/1994 (JD 007) to 03/03/1994 (JD 062)
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Analog Materials
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list
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Index map
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Crew
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Alan Cooper
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Chief Scientist, USGS Western Region
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G. Brancolini
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Chief Scientist, Osservatorio Geolisco Sperimentate, Italy
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M. Bahnhoff
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Unspecified, Inst. Geophys., University of Hamburg, Germany
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G. Pellis
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Unspecified, University of Trieste, Italy
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Greg Miller
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Unspecified, USGS Woods Hole
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Equipment Used
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bottomseismometer
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48channel
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Purpose
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The objective of the ACRUP project is to study the structure of the
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crust and upper mantle of the Ross Sea region using geophysical measurements
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along onshore and offshore transects. The Ross Sea is part of the West Antarctic
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Rift system (WRS). The WRS has a 2500 to 5000-m-high rift shoulder
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(Transantarctic Mountains (TAM)) on the west, and is underlain in the Ross Sea
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by numerous large rift basins now filled with thick sedimentary sections. A deep
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sedimentary basin, the Victoria Land basin, and an active rift (Terror rift) are
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mapped along the western side of the Ross Sea adjacent to the TAM. The rift
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structures of the Ross Sea are believed to have formed initially with the
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Mesozoic breakup of Gondwana, and later with late Mesozoic and Cenozoic
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extension across the Ross Sea and uplift of the Transantarctic Mountains. The
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age of the Mesozoic and Cenozoic rifting is poorly known because rocks from deep
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within the rift basins have not been sampled . Also, the crustal structure and
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mechanism(s) of rifting are not known because few refraction data exist,
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although many models for the evolution of the WRS and uplift of the TAM have
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been proposed. The ACRUP experiments are designed to determine deepcrustal
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structures in the Ross Sea region to help resolve the mechanisms, and relative
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timings, of rifting events.
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Notes
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See online cruise report at http://obs.er.usgs.gov/acrup94.html#data
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Publications
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Cruise Report exists at Woods Hole
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Got Help?
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For E-1-94-AN, we would appreciate any information on -- contract, days at sea, dive count, funding, information specialist, information to be derived, kms of navigation, national plan, NGDC Info, owner, ports, project number, scanned materials, seismic description, station count, station description, submersible, summary, tabulated info.
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