Astronomical Time Scale of Middle Miocene Hanjiang Formation in Pearl River Mouth Basin, South China Sea
详细信息
- 责任者：Tian Shifeng (School of Geosciences ; China University of Petroleum ; Qingdao 266555 ; China) ; Chen Zhongqiang
- 刊名：Journal of China University of Petroleum
- 出版年：2012
- 卷期：36(1)
- 关键词：旋回地层学 ; cyclostratigraphy ; 地质年代表 ; geologic time scale ; 珠江口盆地 ; Zhujiangkou Basin
- 页码：p.27-32
- 图表：5 illus., 31 refs.
- 分类号：1200
- issnNo：ISSN1673-5005
- isbnNo：CN37-1441/TE
摘要
Cyclostratigraphic analysis was undertaken with several different spectral analysis methods on the Hanjiang Formation of Langhian age (Middle Miocene) in the Pearl River Mouth Basin of South China Sea,which consists of deltaic siliciclastic and neritic shelf carbonate rhythmic alternations.Within biochronological constraint,a high-resolution astronomical time scale was constructed.The results show that the Hanjiang Formation cycles are controlled by variation of the earth’s orbital period.The astronomically tuned time scale can be used to calculate astronomical ages for geological events and bioevents recognized throughout the period,and the results are only slightly different from earlier estimates in South China Sea.
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