نتایج جستجو برای: intracontinental belt

تعداد نتایج: 17763  

Journal: :The China Geological Survey Series 2023

As an important tectonic unit of Eastern Tethyan domain, Sanjiang orogenic belt started from the expansion, subduction, subtraction and closure Paleozoic Paleo-Tethys Ocean, went through opening Neo-Tethys Ocean subduction collision process Indian continent ended in Himalayan comprehensive intracontinental convergence uplift orogeny, forming a giant composite composed several island arc belts s...

Journal: :Geological Society of America Bulletin 2021

ABSTRACT The Bikou Terrane, located at the conjunction of Longmenshan fold-thrust belt and west Qinling orogenic in centeral China, was involved Late Triassic collision between South China North blocks. Terrane has preserved crucial information on structural geometry kinematics tectonics, is therefore great importance for reconstructing Paleo-Tethyan evolutionary history. However, multi-phase t...

Journal: :Gondwana Research 2023

This paper present new U–Pb geochronological data (LA-ICP MS on zircon) of granitoids from the Moroccan Meseta Variscan belt. Zircons Oulad Ouaslam granodiorite in Jebilet massif Western highlight a peak magmatic activity at 335.2 ± 0.8 Ma. In Eastern Meseta, ages obtained several facies High Moulouya complex restrained its to early Visean: 339.6 1.9 Ma for Perdreaux granite, 337 1.6 calc-alkal...

2003
Paul Kapp An Yin Craig E. Manning T. Mark Harrison Michael H. Taylor Lin Ding Shuang Hu

[1] A >500-km-long east-west trending metamorphic belt in the Qiangtang terrane of central Tibet consists of tectonic melange that occurs in the footwalls of Late Triassic–Early Jurassic domal low-angle normal faults. The melange is comprised of a strongly deformed matrix of metasedimentary and mafic schists that encloses lesser-deformed blocks of metabasites, Carboniferous–Triassic metasedimen...

Journal: :Geodinamika i Tektonofizika 2021

The Ural mobile belt is an intracontinental epioceanic orogen that has already gone through all stages of the geodynamic development. Igneous rocks formed during each stage are important indicators for understanding evolution this and determining potential ore contents its segments. We consolidated large datasets on petrogeochemistry isotope geochronology Paleozoic (490–250 Ma) granitoids assoc...

Journal: :Geological Society of America Bulletin 2021

Abstract The Longmenshan Thrust Belt in Eastern Tibet resulted from a Mesozoic orogeny and Cenozoic reworking. It is generally believed that the tectonics along are mostly inherited Mesozoic. Reconstructing of therefore important for understanding its evolutionary history. On basis detailed structural analysis, we recognized Main Central Boundary divides into Southeastern Zone Northwestern Zone...

2013
Joshua P. Taylor Laura E. Webb Cari L. Johnson Matthew J. Heumann

The Central Asian Orogenic Belt, or Altaids, is an amalgamation of volcanic arcs and microcontinent blocks that records a complex late Precambrian–Mesozoic accretionary history. Although microcontinents cored by Precambrian basement are proposed to play an integral role in the accretion process, a lack of isotopic data hampers volume estimates of newly produced arc-derived versus old-cratonic c...

1999
K. LI

Intracontinental deformation, caused by plate boundary processes, dominates the past and present tectonics of Syria (Figure 1). This deformation has created structures that form hydrocarbon traps in several different areas of the country. Current production from Syria is around 600 000 b/d and the country hosts ongoing exploratory efforts. Deformation within Syria can be conveniently divided in...

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