Abstract
The Quaternary sediments of the Chiawobao basin in the Xinjiang Autonomous Region, represented by cores from drill wells, were studied to understand their amino acids, fatty acids, sterols, steranes, terpanes and alkanes. As a result, it has been recognized that the organic matter in sediments were mainly derived from zooplankton and phytoplankton, as well as high plnat debris. During early diagenesis, the amino acid content had dropped sharply, and n-alkane with a low molecular weight had been generated from fatty acids through decarboxylic function, whereas sterols seemed to be more stable as compared with fatty acids, and the odd carbon preference in n-alkanes may have remained until the late diagenesis stage. The results from this study have provided valuable data for understanding the evolution of organic matter at the early diagenesis stage.
Published Version
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