1. Basic structures have Xiyoufang thrusting - nappe ductile shear zone and Jiangjiashan overfault.

2. The pattern of paleofold in Xuefeng thrust nappe was near recumbent fold thrusting toward northwest Caledonian.

3. The structural system of nappe consists of several overthrust fracture belts, thrust sheets and thrust slices, and master fault and secondary fault form an imbricate structure.

4. The over-thrust nappe in the margin of Daba Mountain is a zone with complex structures but fairly good prospects to hydrocarbon exploration.

5. But to the region of nappe structure, by the reason of rising reverse fault top wall, so we just can calculate the fault geometry under the footwall breakpoint.

6. The formation of nappe is related to the tectonic movement of circum - Pacific continental active belt.

7. On the hanging wall of the nappe (thrust), isoclinal folds are developed with the axial planes inclined to the north in association with imbricated thrusts dipping to the south.

8. The over thrust nappe consists of four parts: nappe system, front zone, outer front zone and autochthon.

9. Decollement - nappe structure of the Guanyinping region is a part of nappe structure of Wudang Mountain.

10. Moreover, the back limbs of such folds may become detached along major thrust faults to produce nappes.

11. Based on the summarization of the main types of nappe structure array, this article discusses the main features of the Beishan scaly imbrication nappe structure in Xinjiang.

12. The dip of the minimum reflectance (R_c) in the allochthon turns from NNW to WNW, indicating the state of stresses in the frontal zone of nappe.

13. By use of plate theory and according to the drilling and seismic data of Longmen Mountains'northern sector, the mechanism forming the nappe of Longmen Mountains is discussed.

14. The Luochen Copper Mine is situated at the composite part of the protruding south front of the large scale thrust( slip) nappe and the NNE-trend strike-slip thrust fault in the south edge of Jiuling.

15. According to tectonics deformation, evolution characters and geological conditions, we studied the relationship of between Daba mountain thrust nappe and the formation of oil-gas.

16. It indicates that mylonite in the root zone of nappe in the southern edge of Jiuling is a product resulted from ductile deformation controlled by dislocation in the deep structural level.

17. The most efficient structural assemblage zone for gas accumulation is the thrust fault and nappe thrust belt developed in a variety of salt-related due to tectonic compression and salt flexible fluid.

18. The ductile shearing deformation took place contemporaneously with, but have a wider extent of influence than, the nappe deformation.

19. In view of tectonic deformation assemblages, the paper indicates that the orogenic Belt is dominatly characterized by its fold structural assemblage and dextral ductility shear nappe assemblage.

20. Preliminary research on structural law of coal bed beneath nappe in No.

21. In the piedmont belt of Washixia sag developed thrust nappe which leaded to incrassation of Jurassic source rocks, being favorable for hydrocarbon accumulation in this area.

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22. The high resolution gravity and magnetic survey is one of the effective means in early stage exploration to look for coal series strata under nappe.

23. This paper mainly deals with the characteristics of the thrust na ppe and sliding nappe structures with detailed field first-hand data and prelim inarily analyzes their genetic mechanism.