Characteristics of organic geochemistry of sediments in the northern part of the South Huanghai Sea |
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| Authors: | Luan Zuofeng |
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| Institution: | 1. Institute of Oceanology, Academia Sinica, Qingdao
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| Abstract: | It is known that the organic matter in the upper layer of sediments gets lost fast, but not in the South Huanghai Sea (Yellow sea). Some of the major characteristics of organic geochemistry of sediments in the South Huanghai Sea can be summarized as follows: - The contents of organic carbon and bitumen increase with the decrease in grain size.
- Loss of organic matter is closely related to grain size but less so in clay sediments.
- The contents of bitumen and hydrocarbon are low, about n×102 ppm for bitumen and n×10 ppm for hydrocarbon.
A scattered show of organic matter does not necessarily indicate the presence of petroleum in recent marine sediments. In research into the genesis of petroleum, people pay more attention to the study of the organic geochemistry of recent marine sediments. How much organic materials was lost during the deposition up to the diagenesis? The problem is as important as the study on the transformation of organic matter. This study on the organic geochemistry of the sediments is based on surveying data of oil pollution in the northern part of the South Huanghai Sea. |
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