Key;
Laboratory;
of;
Organic;
Geochemistry,;
Guangzhou;
Institute;
of;
Geochemistry,;
Chinese;
Academy;
of;
Sciences,;
Guangzhou;
510640;
China;
of;
Earth;
Science,;
Zhejiang;
University,;
Hangzhou;
310027,;
China;
University;
of;
Chinese;
Academy;
of;
Sciences,;
Beijing;
100049,;
China;
柴达木盆地西部; 湖相烃源岩; 中国西北; 新生代; 盐水湖; 生物地球化学过程; 沉积有机质; 下干柴沟组;