Reliability Comparison of Al-in-Hornblende and Biotite Barometer—A Case Study of Guposhan-Huashan Granite in North Guangxi
详细信息
- 责任者：Kang Zhiqiang (College of Earth Sciences ; Guilin University of Technology ; Guilin 541004 ; China) ; Feng Zuohai
- 刊名：Journal of Guilin University of Technology
- 出版年：2010
- 卷期：30(4)
- 关键词：花岗岩 ; granite ; 地质压力计 ; geologic barometry
- 页码：p.474-479
- 图表：3 illus., 3 tables 14 refs.
- 分类号：0600
- issnNo：1674-9057
- isbnNo：45-1375/N
摘要
For studying the reliability and accuracy of different minerals barometer, data of Al-in-hornblende and biotite barometer from five units of Guposhan-Huashan granite in north Guangxi is reported. Calculated formation pressures of Yangmeishan intrusion based on hornblende and biotite are 3.23×108 and 0.90×108 Pa, the corresponding formation depths are 12.8 and 3.58 km. Lisong unit calculated formation pressures based on hornblende and biotite are 3.47×108 and 1.00×108 Pa, the corresponding formation depths are 14.29 and 4.08 km.The calculated formation pressures of Wanggao unit, Xinlu unit and Huamei unit based on biotite are 1.24×108, 3.49×108 and 2.20×108 Pa, the corresponding formation depths are 5.13, 14.48 and 8.3 km. In the contrast with previous results it is suggested that the hornblende is more suitable for target mineral of Al-barometer than biotite in general.