Results 161 to 170 of about 864 (205)
Lithos, 2007 The Indosinian granites in the South China Block (SCB) have important tectonic significance for the evolution of East Asia. Samples collected from Hunan Province can be geochemically classified into two groups. Group 1 is strongly peraluminous (A/CNK > 1.
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Records of Indosinian orogenesis in Lhasa terrane, Tibet
Journal of Earth Science (Wuhan, China), 2009Based on the deformation characteristics of the ductile shear zones in Sumdo (松多) Group, the quartz fabric by EBSD (electron backscatter diffraction), the data of muscovite 40 Ar- 39 Ar geochronology (220-230 Ma) from ductile shear zones and the zircon SHRIMP U-Pb chronology (190 Ma) of granites in Sumdo region, Lhasa (拉萨) terrane is thought to have ...
Huaqi Li, Zhiqin Xu, Jingsui Yang
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Hercynian–Indosinian Sedimento–Tectonic Evolution of the Nanpanjiang Basin
Acta Geologica Sinica - English Edition, 1996Abstract Following the orogeny in the Early Palaeozoic, the tectonic evolution of the Nanpanjiang basin in the Hercynian–Indosinian stage constituted a complete Wilson Cycle, made up of the stages of early rifting (D–P1), late rifting and passive margin developement (P2–T1), and peripheral foreland basin developement (T2–T3).
Qin Jianhua +3 more
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Palaeogeography of Late Triassic red-beds in Singapore and the Indosinian Orogeny
Journal of Asian Earth Sciences, 2013Abstract A red-bed facies of the Upper Triassic Jurong Formation has been logged on Sentosa Island, Singapore. An overall coarsening and thickening-upward pattern is well developed. The lower part of the section is dominated by purple-red, massive to finely laminated illite–smectite–kaolin-rich mudstones containing thin, discontinuous lenses of fine ...
GRAHAME JOHN HENDERSON OLIVER, Prave, A.
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Early Indosinian magmatism in the West Qinling orogen and its tectonic implication
2023The West Qinling Orogen (WQO), which is bounded by the Qilian Orogenic Belt, Qaidam Block and the Songpan-Ganzi Block, is the western extension of the Qinling Orogenic Belt, and experienced complex tectonic evolution processes, involving the opening, subduction and closure history of the Proto- and Paleo-Tethys Oceans.
Meng Wang +7 more
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Distribution and geochemical features of Hercynian-Indosinian granitoids in southeastern China
Chinese Journal of Geochemistry, 1987The tectonic patterns of the Hercynian-Indosinian cycle in southeastern China can be divided into two types. The first type is the Hercynian-Indosinian eugeosynclinal system, which is situated on the outer side of the Caledonian uplift belts. The second type is the Hercynian-Indosinian fault depression zone or superimposed basin system, which is ...
Wang Dezi, Liu ChanGsm
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Mesozoic geology of southwestern China: Indosinian foreland overthrusting and subsequent deformation
Journal of Asian Earth Sciences, 2016Abstract The southwestern part of the South China Block (SCB) records Triassic and subsequent deformations and is a key region that provides evidence of the post-amalgamation tectonic evolution of Southeast Asia. Here, we outline the tectonothermal evolution of early Mesozoic orogenesis in this region using structural analysis and fission track ...
Liang Qiu +6 more
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The Triassic Indosinian orogeny in East Asia - Foreword
2008La tectonique récente, du Tertiaire à l'Actuel, est omniprésente dans l'Est et le Sud-Est asiatique, et s'y manifeste notamment sous la forme de décrochements crustaux de grande ampleur, comme celui du fleuve Rouge. Pour importante qu'elle soit, cette tectonique ne saurait faire oublier les événements orogéniques antérieurs auxquels elle s'est ...
Lepvrier, C., Maluski, Henri
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Indosinian deformation of the Songpan Garzê Fold Belt, northeast Tibetan Plateau
Journal of Structural Geology, 2005Abstract Deformation of the Songpan Garze Fold Belt, southwest China, occurred progressively during the Indosinian orogeny (ca. 230–200 Ma). Two phases of south-directed deformation are identified: D 1 , associated with pervasive thickening of the Songpan Garzi sedimentary pile and detachment of that portion of the fold belt onlapping the Yangtze ...
Mathew J. Harrowfield +1 more
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Dating Tectonism in the Indosinian–Thai–Malayan Orogen by Thermoluminescence
Geological Society of America Bulletin, 1968The thermoluminescence “ages” of a large and representative selection of limestone specimens from the Thai-Malayan geosyncline, ranging in stratigraphic age from Ordovician to Triassic, are related, not to stratigraphic age, but to tectonic and magmatic events in the Mesozoic Indosinian-Thai-Malayan orogeny.
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