Early Diagenesis of Late Pleistocene Aeolian Carbonate Sediment on Shidao Island, Xisha Islands
详细信息
- 责任者：Zhao Qiang (Key Laboratory of Marine Sedimentary and Environmental Geology ; First Institute of Oceanography ; SOA ; Qingdao 266061 ; China) ; Xu Hong
- 刊名：Acta Sedimentologica Sinica
- 出版年：2013
- 卷期：31(2)
- 关键词：碳酸盐岩 ; carbonate rocks ; 成岩作用 ; diagenesis ; 晚更新世 ; Upper Pleistocene ; 南海 ; South China Sea
- 页码：p.220-236
- 图表：illus., 2 tables, 39 refs.
- 分类号：1400
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
The surface sediments on Shi Island of Xisha Islands are aeolian sediments, which have been formed during Late Pleistocene,and they are undergoing early diagenesis.Through the detailed observation of outcrops,sections and SEM,combing with the analysis of stable isotope of carbon and oxygen,major elements and trace elements,the authors found the aeolian sediments had been consolidated mainly in meteoric diagenetic environment,and the evaporation diagenesis might play an important role during the early consolidation of the aeolian sediments.For the pedogenesis,the palaeosols are relative abundant in Al(aluminium),Fe(ferrum),Mn(manganese),Y(yttrium) and Cr(chromium) than the aeolian calcarenite.Nevertheless,the concentration of Y(yttrium) and Cr(chromium) showed little relationship with pedogenesis,and the authors induced that they might come from travel fatigue or volcanic ash during the relatively long term exposure.
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