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Seismic Project Information EW0007
SCREECH

This ODP site survey on the Newfoundland margin was a joint project, SCREECH (Studies of Continental Rifting and Extension on the Eastern Canadian SHelf), between the University of Wyoming, WHOI, Dalhousie University, and Danish Lithosphere Centre scientists. The Ewing acquired MCS, magnetic, gravity, and multibeam bathymetric data while the Oceanus acquired wide-angle reflection/refraction data via ocean-bottom seismometers/hydrophones (OBS/Hs). This cruise was to provide a critical dataset for testing models of continental rifting, breakup, and initiation of seafloor spreading in a non-volcanic rifted environment. Its objectives were to: 1) characterize the nature of the crust transitional between oceanic and continental crust in the region; 2) provide a comparison with the Iberian margin, thereby allowing testing of models of pure-shear vs. simple-shear during rifting; and 3) determine the amount of igneous material intruded and extruded during rifting, providing comparative data with other volcanic rifted margins, such as the East Greenland margin.

Brian E. Tucholke
W. Steven Holbrook
Chief Scientists:
W. Steven Holbrook (NSF 9819599,0241940)
Brian E. Tucholke (NSF 9819053)
John Hopper
Keith Louden
Hans Christian Larsen
Sharon Deemer
Charles Hurich
Jeremy Hall
Principal Investigators:
National Science Foundation
Dalhousie University
Geological Survey of Denmark and Greenland
Memorial University of Newfoundland
Data Originating Institutions:
National Science Foundation
Dalhousie University
Geological Survey of Denmark and Greenland
Danish National Research Foundation (Danmarks Grundforskningsfond)
Natural Sciences and Engineering Council of Canada
Funding Agencies:
Unrestricted access.
Access:
MCS
Seismic Data Types Acquired:
Field, Processed
Seismic Data Classes at UTIG:
MCS
Seismic Data Types at UTIG:
Seismic Data Classes at LDEO:
Seismic Data Set DOI(s) at LDEO:
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Cruise(s)

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