 ... Raleigh. Strong events are apparently reflected from the M discontinuity at critical distances and beyond, and it is necessary to supplement meager first arrivals with the reflections to arrive at a delineation of the upper mantle. The average velocity...  Geophysical Abstracts - الصفحة 63بواسطة Geological Survey (U.S.) - 1967عرض كامل - لمحة عن هذا الكتاب
 | United States. Congress. Joint Committee on Atomic Energy - 1969 - عدد الصفحات: 764
...delineation of the upper mantle. The average velocity In the upper mantle is 8.4 ± 0.3 km/see, the average crustal thickness is 35 km, and the M discontinuity dips 3° toward the south from Raleigh to Ansley. The complicated crustal structure may be due to the intermingling... | |
 | Geological Survey (U.S.) - 1967 - عدد الصفحات: 904
...3437-34S6, Ulusi, tables. 1966. A refraction survey along a 400 km line indicates complex crustal structure below the Lower Cretaceous. There is a basement trough...kmps, average crustal thickness is 35 km, and the M-discontinuity dips 3° southward from Raleigh to Ansley. Isostatic equilibrium requires increasing... | |
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