However,because exploration degree is generally low,exploration horizons are limited and main emphasis is put on the Cenozoic(especially Paleogene)basins.

 
  • 但由于目前总体勘探程度比较低,勘探层位也比较单一,以前主要将勘探目的层瞄准新生界(尤其是下第三系)。
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