Mathematics – Logic
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufm.v43b1370m&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #V43B-1370
Mathematics
Logic
7203 Body Waves, 7218 Lithosphere (1236), 7270 Tomography (6982, 8180)
Scientific paper
Northwestern Canada is a unique collage of different geologic domains that accreted together at different stages in the planet's history. In this region the rock record spans close to 4.0 Ga, from Early Archean to the present day, over a distance of three thousand kilometers. This mosaic represents the most nearly complete and continuous sampling of geological time on the surface of the Earth. The IRIS-PASSCAL/Lithoprobe-sponsored Canada NOrthwest Experiment (CANOE) experiment was designed to address fundamental questions on the variation in structure and geometry of the lithosphere from early Archean to present. Nearly 60 broadband, three-component instruments were deployed during a period of over two years between June 2003 to September 2005 along aY-shaped array with over 1000km aperture. The three legs of the array radiate away from Fort Nelson, the array center, to termini at Yellowknife, Whitehorse and Edmonton. In this poster, we present P and S body-wave travel-time tomography images of upper mantle velocity structure beneath the array using 675 earthquakes of magnitude 5 and above in the epicentral range of 30° to 100° recorded by the CANOE array.
Bostock Michael G.
Gaherty James B.
Garnero Edward J.
Mercier Jacques
Revenaugh Justin
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