Tertiary diachronic extrusion and deformation of western Indochina: Structural and40Ar/39Ar evidence from NW Thailand
作者： Robin Lacassin , Henri Maluski , P Hervé Leloup , Paul Tapponnier , Chaiyan Hinthong
DOI: 10.1029/96JB03831
关键词:
摘要: The Wang Chao and Three Pagodas fault zones cut the western part of Indochina block run parallel to Red River Fault. Evidence intense ductile left-lateral shear is found in Lansang gneisses, which form a 5 km wide elongated core along zone. Dating by 40 Ar/ 39 Ar shows that such deformation probably terminated around 30.5 Ma. faults offset north striking lower Mesozoic metamorphic magmatic belt northern Thailand. results suggest this suffered rapid cooling Tertiary, 23 These imply extrusion southwestern occurred upper Eocene-lower Oligocene. It induced rifting some basins Gulf Thailand Malay Mekong basins. In Oligo-Miocene, continuing penetration India into Asia culminated with all Ailao Shan - fault. This concurrently onset E-W extension more south. Plotting geographical reference frame diachronic time spans movement on east southeast Tibet implies northward Indian indenter successively initiated new strike-slip located farther its path.
harvard.edu
earthobservatory.sg参考文章(56)
Bertrand Meyer, Mécanismes des grands tremblements de terre et du raccourcissement crustal oblique au bord Nord-Est du Tibet Paris 6. ,(1991)
Warren Bell Hamilton, Tectonics of the Indonesian region U.S. Geological Survey Professional Paper. ,vol. 1078, pp. 1- 345 ,(1979) , 10.3133/PP1078
Philippe Patriat, José Achache, India–Eurasia collision chronology has implications for crustal shortening and driving mechanism of plates Nature. ,vol. 311, pp. 615- 621 ,(1984) , 10.1038/311615A0
D. Berthé, P. Choukroune, P. Jegouzo, Orthogneiss, mylonite and non coaxial deformation of granites: the example of the South Armorican Shear Zone Journal of Structural Geology. ,vol. 1, pp. 31- 42 ,(1979) , 10.1016/0191-8141(79)90019-1
David A. Foster, T.Mark Harrison, Peter Copeland, Matthew T. Heizler, Effects of excess argon within large diffusion domains on K-feldspar age spectra Geochimica et Cosmochimica Acta. ,vol. 54, pp. 1699- 1708 ,(1990) , 10.1016/0016-7037(90)90401-6
Robin Lacassin, Maurice Mattauer, Kilometre-scale sheath fold at Mattmark and implications for transport direction in the Alps Nature. ,vol. 315, pp. 739- 742 ,(1985) , 10.1038/315739A0
H Ahrendt, C Chonglakmani, B.T Hansen, D Helmcke, Geochronological cross section through northern Thailand Journal of Southeast Asian Earth Sciences. ,vol. 8, pp. 207- 217 ,(1993) , 10.1016/0743-9547(93)90022-H
John D Pigott, Nares Sattayarak, Aspects of sedimentary basin evolution assessed through tectonic subsidence analysis. Example: northern Gulf of Thailand Journal of Southeast Asian Earth Sciences. ,vol. 8, pp. 407- 420 ,(1993) , 10.1016/0743-9547(93)90042-N
R. Lacassin, P.H. Leloup, P. Tapponnier, Bounds on strain in large Tertiary shear zones of SE Asia from boudinage restoration Journal of Structural Geology. ,vol. 15, pp. 677- 692 ,(1993) , 10.1016/0191-8141(93)90055-F
P. H. Leloup, T. Mark Harrison, F. J. Ryerson, Chen Wenji, Li Qi, P. Tapponnier, R. Lacassin, Structural, petrological and thermal evolution of a Tertiary ductile strike-slip shear zone, Diancang Shan, Yunnan Journal of Geophysical Research: Solid Earth. ,vol. 98, pp. 6715- 6743 ,(1993) , 10.1029/92JB02791