Rock-Magnetic Characteristics of the Late Cretaceous-Early Miocene Sediments on the Kuzigongsu Section of the Northwestern Tarim Basin
详细信息
- 责任者：Zhang Zhigao (Laboratory of Western China’s Environmental Systems ; Ministry of Education of China ; Research School of Arid Environment and Climate Change ; Lanzhou University ; Lanzhou 730000 ; China) ; Chi Yunping
- 刊名：Acta Sedimentologica Sinica
- 出版年：2012
- 卷期：30(5)
- 关键词：晚白垩世 ; Upper Cretaceous ; 古近纪 ; Paleogene ; 中新世 ; Miocene ; 岩石磁学 ; rock magnetism ; 塔里木盆地 ; Tarim Basin
- 页码：p.919-927
- 图表：4 illus., 1 table, 37 refs.
- 分类号：1200,0803
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
The authors carried out a rock magnetism investigation and thermal demagnetization for the Late Cretaceous to Early Miocene sediments on Kuzigongsu section from the Northwestern Tarim Basin, Western China.The results indicate that thermal demagnetization and rock magnetic characteristics of rocks can be divided into three types specifically.Rocks from sublittoral zone,shallow of platform edge are dominated by the pseudo-single domain (PSD) magnetite with a little amount of goethite and maghematite.Rocks from intertidal zone and supratidal zone are dominated by pseudo-single domain and multi-domain (PSD﹢MD) magnetite generally,with a little amount of goethite,maghematite and hematite.Rocks from the fluvial and lacustrine facies are dominated by the pseudo-single domain (PSD) magnetite,the hematite,with a little amount of maghemite,the goethite,So investigation of rock magnetism on sediments from different sedimentary environments is important for the paloemagnetic research.
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