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Data report for O-NYNEX: The 1988 Grenville-Appalachian seismic refraction experiment in Ontario, New York and New England

1990; United States Department of the Interior; Linguagem: Inglês

10.3133/ofr90426

2332-4899

J. H. Luetgert, Stephen Hughes, John Cipar, S. Mangino, D. A. Forsyth, I. Asudeh,

Geological and Geochemical Analysis

Laboratory (AFGL) , and the Geological Survey of Canada (GSC) conducted a seismic refraction/wide angle reflection experiment in southern Ontario, New York, and New England to investigate the crustal and upper mantle velocity structure and inter-relationships of the North American craton, the Adirondack massif, and the northern Appalachians.The primary line of the experiment extended east from Marmora, Ontario, Canada across the Adirondacks in upstate New York, and the northern Appalachians in Vermont and New Hampshire to Waterville, Maine.Portable seismographs were located along this line at intervals of 750-1000 m.Shotpoints were located at intervals ranging from 30 to 40 km.In addition to the linear profile data, three fan shotpoints, located to the south of the recording array, were fired to image deep crustal structures.A subsidiary line acutely transverse to the primary profile in Vermont was recorded at ~3 km spacing by instruments from AFGL and the USGS.A wide-angle reflection experiment was recorded with a modified cross array of 210 instruments recording shots at distances of 0, 70, and 100 km.Instrument spacing in the cross array was 100 meters.