Seismic velocity determinations over Precambrian outcrops indicate that several different rock types have sufficient velocity contrast to make reflection mapping possible. Stratigraphic and fault contacts between metasedimentary and metavolcanic rocks have been mapped at some depth. A multifold reflection survey attemped to trace the depth extension of an ore-bearing (Pb-Zn) rhyolite horizon within the metavolcanic rocks. A synthetic seismogram was produced from a 10,000-ft sonic log and provides means of comparing seismic records with the local geology. From this the optimum frequency spectrum and the maximum resolution of the seismic signals are estimated.
|Number of pages||8|
|Journal||Trans Soc Min Eng AIME|
|Publication status||Published - Jan 1 1977|
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