This report presents deep-crustal wide-angle seismic reflection and refraction data obtained in the vicinity of Cape Blanco, southern Oregon, in October 1994. As part of a larger U.S. Geological Survey (USGS) initiative to better understand lateral variations in crustal structure along the Cascadia margin, the USGS acquired 760 km of deep-crustal multichannel seismicreflection profiles .on the continental margin of southern Oregon using the R/V Ewing from October 3 to October 7, 1994. Prior to this reflection survey, we deployed two temporary, linear arrays of seismic recorders along east-west transects across the Oregon Coast Ranges; each array contained 10 matched REFTEK recorders and stretched landward about 80 km from the coast. Each REFTEK recorder .contained an oriented 3-component seismometer and recorded digital data on a large-capacity hard disk. By recording signals generated by the Ewing's marine air gun array, having a total volume of 137.7 liter (8400 cu. in.), the arrays of land recorders were designed to (1) image the lower crustal structure near the coast to the north and south of Cape Blanco, (2) determine whether any significant differences in crustal structure exist across a postulated eastwest trending major crustal shear zone in the vicinity of Cape Blanco, and (3) image the subducting Gorda and Juan de Fuca plates. Nearly 12,300 air gun shots along 7 reflection lines were recorded by 18 land recorders. Air gun signals were recorded at ranges as close as 5 km and as far as 160 km. In this report, we describe the land recording of the air gun signals, discuss the processing of the land recorder data into common receiver gathers, and illustrate the processed wide-angle seismic data. Data quality is generally high; in addition to refractions from the upper crust, Pg, refractions from the upper mantle, Pn, were observed at almost all recorders at sufficient offsets from the Ewing. Reflections from within the crust and from the top of the upper mantle, PmP, were also observed.
Conflict of laws theory explores how courts should decide which law governs a dispute or transaction when more than one legal authority has a legitimate connection with the dispute, and thus a legitimate claim to having its law applied to it.1 Conflict of laws theory, thus, explains the delicate balancing act in which courts engage to allocate power among sovereigns with overlapping authority. It seeks to promote and accommodate a variety of goals in achieving this end: respect for sovereignty, respect for legitimate governmental policies and the interests they serve, predictability, certainty, and uniformity in the application of law, among others.
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