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The northwest trending tectonic belt in the middle part of the Mesozoic intraplate Yanshan Orogenic Belt, northeast Hebei Province, is composed of thrusts, extensional faults, strike-slip faults and syntectonic sedimentations as well. The northeastward basement-involved major thrusting deformation occurred between 174Ma and 168MaBP and was followed by an …
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The Kunlun – Qinling – Dabie orogenic belt that extends E–W over 3,000 km across Central China (Figure 1) forms the longest active mountain ranges in East Asia. The …
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The Himalaya is the largest orogenic belt in the world and evolved as a consequence of the collision of the Eurasian and Indian plates about 50 Ma (Valdiya, 1984).The major thrust/fault systems of the Himalaya span the entire 2500 km length of the Himalaya.The Main Central Thrust (MCT) and Main Boundary Thrust (MBT) are the two major tectonic …
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Mesozoic contraction deformation in the Yanshan and Taihang mountains is characterized by basement-involved thrust tectonics, basement-cored buckling anticlines and ductile thrust and nappe tectonics. Most of these deformations are orientated west-east, west-northwest and northeast to north-northeast. The contraction deformations began in the …
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The Haiyuan Arcuate Tectonic Belt (HATB) in the northeastern Tibetan Plateau features the interactions of three intersecting blocks: the eastern Qilian Shan, the Alxa Block, and the Ordos Block.
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The Tripura-Mizoram fold belt is situated in the northeastern part of India. Northeastern Himalaya including this region is tectonically very active, partly petroliferous, and has international ...
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This study area consists of a variety of tectonic units, including the Songpan-Garzê block and Qilian orogenic belt, which are terranes of the northeastern Tibetan Plateau; the Alxa block, the Ordos block and its …
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Tectonic evolution of Mohe area, North‐east China : Evidence from the Early Ordovician to Early Cretaceous magmatism and tectonism ... The Central Asian Orogenic Belt ... Siberian Craton and the ...
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short seismic belt extending northward from the Koman dorskiye islands. This belt is probably related to under thrusting of the Pacific plate [Cormier, 1975]. RECENT TECTONICS A brief review of field geological and geophysical evidence for recent tectonic activity in the Sea of Okhotsk region is a
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Belts of various Paleoproterozoic rock types and shear zones trend dominantly northeast to east-northeast, as does the strike of steeply dipping tectonic foliation in most metamorphic rock units. This tectonic grain reflects the trend of the Laurentian continental margin and the shortening strains resulting from plate-tectonic convergence and ...
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A. TAKEUCHI: BASEMENT-INVOLVED TECTONICS IN NORTH FOSSA MAGNA, CENTRAL JAPAN 1263 Fig. 3. Tectonic provinces of the North Fossa Magna. Distribution of Miocene stratigraphic sequence (after 1:200,000 Geologic Map; GSJ, 2003) and major tectonic zones and belts (after Kosaka, 1999) are compiled and simply reproduced. [Pre-Tertiary Basement] HM: …
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to the north, Indo-Burma ranges to the east, Bangladesh to the south and the Andaman Sumatra region to the southeast. The Shillong Plateau, Mikir hills, Assam valley, Tripura fold belt and the Bengal Basin in the study region jawed between the two tectonic arcs, the Himalayan arc to the north and the Burmese-Andaman arc to the east.
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1. Introduction. The north-east India and adjoining regions lying between latitude 22°–29° N and longitude 88°–98° E having an area of roughly 800,000 km 2 exhibit a complex tectonic framework (figure 1).The north-east India is seismically highly active due to the presence of the eastern Himalayan collision belt to the north and nearly N–S trending Burmese arc to …
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The Northwestern Ordos Terrane (NOT) in the Western North China Craton (W-NCC) comprises the northwestern Ordos Basin in the east and the eastern Alxa Massif in the …
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The Okhotsk-Chukotka Volcanic Belt is the next youngest magmatic belt of NE Russia. It has received the most attention and research and represents one of the world's largest volume ignimbrite "flare-ups" in a continental arc setting.
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The Tectonic and Structural Classification of the Western Part of the Zagros Fold and Thrust Belt, North Iraq: Review and Discussion. Maher T. Zainy1, Nadhir Al-Ansari1, Tobias E. 1, Maria Ask1. Abstract . The Zagros fold and thrust belt represents a tectonically significant area, one of the and richest areas in oil and gas reservoirs in ...
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It is likely, but not unequivocally demonstrated, that the Archean-floored Yanshan continue farther westward under a cover of Neogene strata to emerge as the Yinshan belt of Inner Mongolia.
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Early Paleozoic tectonic evolution of the North Qinling orogenic belt: Evidence from geochemistry, phase equilibrium modeling and geochronology of metamorphosed mafic …
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This belt trends NNW-SSE to the south (the Arakan Yoma belt), N-S east of Bangladesh (the Chin Hills) and NE-SW to the north (the Naga Hills). Within this active tectonic framework (Le Dain et al. 1984), recent studies highlighted the kinematics of the Indian, Burmese and western Sunda plates (Socquet et al. 2006; Gahalaut & Gahalaut 2007).
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The near east–west tectonic belt in the early Mesozoic was superimposed with the north-northeast tectonic belt in the late Mesozoic and vertical uplifting structures with intermediate-acid intrusive rocks and crystalline basement as the core, which formed the basic Mesozoic tectonic pattern (Wang et al., 2018). A succession of volcanic strata ...
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The study of the spatial distribution of strain and stress accumulation in a continent-continent convergent system is significant for seismic hazard assessment. The Indian Plate is moving towards the north-east at a pace of 5cm/year, according to GPS velocity vectors. Since the Main Central Thrust (MCT) was active from 23 Ma to 12 Ma, when the Eurasian and …
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These new insights into the early Paleozoic tectonometamorphic evolution of the North Wulan metamorphic complex constrain the northward subduction polarity of the South …
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Towards the north side, it is bounded by Dauki fault and in the east side, it is bounded by Haflong-Disang thrust, and on the south side, it is bounded by Arakan-Yoma fold belt, while as on the ...
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The arcuate tectonic belt is located at the north-east margin of the Tibetan Plateau and bears crucial information about the tectonic and geomorphic evolution of north-east Tibetan Plateau. Combined with sedimentary sequence, detrital zircon U–Pb geochronology, and heavy mineral combinations, significant provenance transformation can be ...
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A severely felt earthquake of Mw 5.5 occurred on 22 June 2020, in the Champhai district of Mizoram, North East Region (NER) of India, in the vicinity of the Indo-Myanmar subduction zone.
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Several east-northeast and northeast oriented doubly plunging anticlines form a distinctive tectonic province in north Sinai. These folds are the main topographic highs of the region. The north part of Gebel El Maghara thrust is offset twice by …
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Tectonic geodesy revealing geodynamic ... North East India Bhaskar Kundu and V. K. Gahalaut* CSIR-National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, India The plate boundary between India and Sunda plates ... of fold and thrust belt-associated structures11'12'19, gravity anomalies, tomographic images ' " and palaeo ...
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Shear zones play an essential role in controlling the distribution of ore resources, including Au and associated mineral deposits. Our study integrates aeromagnetic, structural, and remote sensing (RS) data to analyze the geodynamics, tectonics, and mineral potentiality of the Safaga-Semna shear belt (SSSB), Eastern Desert, Egypt. Improved logistic (IL) and Logistic …
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Moreover, a series of north-northeast (NNE)-trending basin–mountain deformations and Meso–Cenozoic magmatism became more intense from west to east in the NCC (Fig. 1 c; ... From the Late Triassic to the Early Jurassic, the tectonic belt on the north side of the QDOB was thrust from south to north, forcing the Proterozoic metamorphic rocks ...
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The purpose of this paper is to present a visual model for the development of the Precambrian core of North America (i.e., Laurentia) via a series of time-slice maps (Figs. 1–20) and animations (Animations 1 and 2 1).These visualizations may be useful both for nongeology audiences and for introductory geology teaching as a graphic display of plate tectonic models …
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