|Table of Contents|

Geological Characteristics and Geophysical Exploration of Salt Lake-type Lithium Deposits in Qaidam Basin, China(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2022年第01期
Page:
124-131
Research Field:
应用地球物理
Publishing date:

Info

Title:
Geological Characteristics and Geophysical Exploration of Salt Lake-type Lithium Deposits in Qaidam Basin, China
Author(s):
MENG Jun-hai1;  LIN Jia-fu1;  CAI Zhi-jie1;  XUE Guo-qiang2; 3; 4*;  ZHOU Nan-nan2; 3; 4;  LI Hong-pu5;  MA Long1;  WANG Li-jun1
(1. The Third Geological Exploration Institute of Qinghai Province, Xining 810000, Qinghai, China; 2. Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China; 3. Innovation Academy of Earth Science, Chinese Academy of Sciences, Beijing 100029, China; 4. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; 5. Qinghai Provincial Key Laboratory of Exploration and Research of Salt Lake Resources in Qaidam Basin, Golmud 816000, Qinghai, China)
Keywords:
lithium deposit;  metallogenic geological model;  earthquake;  electromagnetic method;  anticline structure;  Jianshishan;  Eboliang;  Qaidam Basin
PACS:
P618.71; P631
DOI:
10.19814/j.jese.2021.08055
Abstract:
The deep brine of Neogene anticline structure in Qaidam Basin is rich in beneficial components such as Li, B, and K. To study the anticline tectonic stratigraphy, structural characteristics, and salt deposition characteristics in the area, a combination of geology and geophysics is of great significance for evaluating the potential of lithium brine in the deep-seated brine in the anticline structure area. Starting with the distribution of lithium resources, types of lithium deposits and metallogenic geological models at home and abroad, the favorable ore forming areas of Jianshishan and Eboliang anticline structures were selected, and the geophysical methods and technologies such as earthquake and wide area electromagnetic method were used to infer the occurrence horizon of brine deposits in the deep part of anticline structures on the basis of identifying anticline structural morphology, analyzing water layer distribution and summarizing the development characteristics of structural fractures occurrence characteristics, grade and thickness, and comprehensively study the layout of borehole location, so as to provide basis for the evaluation of lithium resource potential in this area. The drilling verification results show that the seismic method has large detection depth and high resolution, and has a good effect on stratum stratification and structure identification, but the brine-bearing stratum is difficultly identified by seismic method, because the velocity difference between brine-bearing stratum and barren-brine stratum is little; wide area electromagnetic method has strong horizontal detection ability, and is sensitive to the low resistivity characteristics of brine-bearing structures, although the vertical resolution is limited.

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Last Update: 2022-02-25