Some conclusions can be made as follows: 1. The relatively high paleogeotemperature during Eogene is of great impo- rtance to the oil generation of lower strata of Sahejie group in depressions.

• 综合地温、古地温资料可作如下结论:(1)早第三纪相对高的古地温对凹陷区沙河街组下部层位生油十分重要。