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| Application of teleseismic tomography to the study of shallow structure beneath Shizigou in the western Qaidam basin |
| Xiaoming Xu1, Yinsheng Ma2, Danian Shi1, Xiaofeng Wang2, Chengming Yin3 |
1 Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China
2 Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
3 Research Institute of Petroleum Exploration and Development, Qinghai Oilfield Company, PetroChina, Dunhuang, Gansu 736202, China
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Abstract Teleseismic body wave traveltime tomography is used to inverse the three-dimensional seismic velocity structure beneath Shizigou in the western Qaidam basin. The travel time are picked from the continuous observation data on a small seismic array of stations deployed during 2004–2007. The tomographic results obtained indicate that a NW-trending low velocity anomaly just beneath the target region insert northeastwards with a high dip angle. In the north, northeast and east of the low velocity anomaly, some high-velocity anomalies distribute with the same strike and coverage as those of Shizigou anticline.
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Received: 11 June 2008
Published: 10 April 2009
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| Fund:Special Fund for National Oil and Gas (XQ-2004-01) and International Program for Science and Technology Cooperation (2006DFA21350) |
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Corresponding Authors:
Xiaoming Xu
E-mail: jhlzxxm@163.com
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