New AMS and Paleomagnetic Results of Early Cretaceous Red Beds from Hainan Island
详细信息
- 责任者：Zhang Huodai (Guangzhou Marine Geological Survey ; Guangzhou 510760 ; China) ; Tan Xiaodong
- 刊名：Chinese Journal of Geophysics
- 出版年：2011
- 卷期：54(12)
- 关键词：早白垩世 ; Lower Cretaceous ; 红层 ; red beds ; 磁性组构 ; magnetic fabric ; 海南 ; Hainan Province
- 页码：p.3246-3257
- 图表：9 illus., 4 tables, 47 refs.
- 分类号：0400
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
摘要
In this paper, the authors conducted a joint paleomagnetic and magnetic anisotropy study on 14 sites (132 samples) of the Cretaceous red beds. The results show that the distribution pattern of magnetic particles had likely been changed during tectonic strain. The authors interpret the characteristic remanent magnetic(ChRM) as being carried by detrital hematite particles but changed during deformation because of tectonic strain-induced particle rearrangement. Therefore, the Cretaceous paleomagnetic direction carried by the red beds is unlikely an accurate record of the Cretaceous paleolatitude for the Hainan Island.