Applications of High Precision Gravity and Magnetic Survey to CO<sub>2</sub> Gas Pool Exploration in Shangdu Area

WEI Xian-yang; LU Jin-cai; WEI Jian-she

2008 Vol. 41, No. 4

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WEI Xian-yang, LU Jin-cai, WEI Jian-she. Applications of High Precision Gravity and Magnetic Survey to CO2 Gas Pool Exploration in Shangdu Area[J]. Northwestern Geology, 2008, 41(4): 111-117.

Citation:

WEI Xian-yang, LU Jin-cai, WEI Jian-she. Applications of High Precision Gravity and Magnetic Survey to CO₂ Gas Pool Exploration in Shangdu Area[J]. Northwestern Geology, 2008, 41(4): 111-117.

Applications of High Precision Gravity and Magnetic Survey to CO₂ Gas Pool Exploration in Shangdu Area

Xi'an Institute of Geology and Mineral Resources, Xi'an 710054, China

Received Date: 09 April 2008

Revised Date: 17 July 2008

Publish Date: 15 December 2008

Abstract

Abstract

Through the high precision gravity in Shangdu area,the cognition of basement structure, structure,fault charact eristics,fault distribution,and the distribution of Hannuoba formation basalts has been improved.Shangdu depression has the mono-faulted structural characteristics,that is west-faulting east-overlapping.The sag is north-west trend,which is the components of north-west and south-east secondary sag.There are two northwest-southeast deep-large faults in this area,the faults can be the migration pathway of mantle-derived CO₂,the distribution of CO₂ gas pool is controlled by the faults.The reflection characteristics of basalts of Hannuoba formation is the anomaly of strong magnetism and high density,the basalts can be the good caprock of Xiaodandai formation CO₂ gas pool,which control the distribution of Xiaodandai formation CO₂ gas pool.
- Shangdu area /
- gravity and magnetic survey /
- deep-large fault /
- basalt /
- mantle-derived gas pool