ESTUDOS GEOFÍSICOS NA FAIXA SEDIMENTAR COSTEIRA RECIFE - JOÃO PESSOA

HELMO M. RAND

Resumo


A geophysical survey of a part of the coastal sedimentary strip of Pernambuco was carried out. One objective was to determine the areal extent, depth, and heavy mineral content (monazite and ilmenite) of beach placers by radioactivity and magnetic methods. It was concluded that placers in Itamaraca, N of Recife, are economically barren, whereas those in Gaibu, S of Recife, merit further study. The second objective was to elucidate the structure of the crystalline basement by magnetic method, and that of the sedimentary cover by seismic refraction. The magnetic anomalies indicate a blockfaulted basement, probably a graben parellel to the coast. The seismic velocities reveal a sandstone occurring in hitherto unsuspected places.

Texto completo:

PDF

Apontamentos

  • Não há apontamentos.