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Crustal heterogeneities and geothermal gradients beneath thrust …

The tectonic framework of northeast India is complex and is seismically one of the active regions of the world. The study region lies between two young orogenic belts – Himalayan arc orogen to the north and N–S trending crescent-shaped Indo-Burmese Ranges to the east (figure 1).It is believed that the Indian plate is under thrusting at low angles beneath the …

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Tectonic evolution of the Early Paleozoic proto-East Asian …

To constrain the incipient Pacific-type orogeny and tectonic processes in the Early Paleozoic proto-East Asian continental margin, the Motai–Matsugadaira–Yamagami (MMY) metamorphic rocks in the South Kitakami belt, northeast Japan were investigated.

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(PDF) Assessment of active tectonics of the Tripura-Mizoram fold belt

Assessment of active tectonics of the Tripura-Mizoram fold belt (Surma Basin), North East India 2 3. August 2023; Authors: ... The tectonic sensitivity is also marked in micro-scale where rivers ...

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Tectonics of the Indian Subcontinent: An Introduction

Geology and Tectonics of the Indian Sub-continent constitute a significant component of the Indian Plate straddling the equator as a part of the Gondwanaland that broke into fragments at ~100 Ma ...

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Cenozoic Tectonic Reconstruction and the Initial Distribution of

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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Jurassic–Early Cretaceous tectonic evolution of the North China …

The NCC, one of the important continental blocks that form the East Asian continent (Davis et al., 2001), is separated from the Siberia Craton by the Central Asian Orogenic Belt in the north and from the South China Block (SCB) by the Qinling-Dabie-Sulu Orogenic belt in the south (Fig. 1).After the Paleoproterozoic cratonization, the tectonic evolution of the NCC is related to …

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Tectonic Evolution of the Thrust-Nappe Belt in the Southwestern …

Our results show that the thrust-nappe belt originated from the south‒north trending aulacogen developed during the Meso-Neoproterozoic age. The main fault in the …

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Tectonic Setting and Petroleum System Significance of Pre …

Schuppen belt on the east and southeast and Arunachal Himalaya to the North and North- East (Fig. 1). Being bounded by eastern Himalayan fold belts on the north and Naga-Patkai fold belts on the east-southeast, it constitutes a vast intermontane basin. Most of its geological features are concealed by the recent alluvial cover. STRATIGRAPHIC OUTLINE

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Seismotectonics in Northeast India: A stress analysis of focal

The Cachar fold belt (CFB) is a part of the Assam-Arakan frontal fold belt in northeast India (Fig. 1) that developed as an accretionary wedge formed on the subducted Indian crust of the eastern ...

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The Junction Between the Mozambique and Zambesi Orogenic Belts; North

Reconnaissance work carried out in north-east Southern Rhodesia has shown that the Umkondo System, previously known in the Mozambique Belt, extends into the Zambesi Belt. It is further demonstrated that the two belts were broadly continuous in structure and metamorphism during the important orogeny c. 500 m·y. The possibility that the mobile ...

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Seismicity of northeast India and surroundings

Based on the distribution of epicentres and geotectonic properties, six seismic tectonic zones were identified in North-East India (Kayal, 1998). This area, which is known as the seismically most ...

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Coupling and transition of Meso–Cenozoic

The Taihang Tectonic Belt (TTB) and the Qinling Orogen (QO) today are in a T-shaped arrangement within the Eurasian Plate, of which the Taihang Mountains is a north-northeast-trending tectonic belt between the Yanshan Orogen to the north and the Qinling Orogen to the south, which is composed of a series of alternating arrangement of uplifts and ...

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Basement-involved tectonics in North Fossa Magna, central …

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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A deep CNN-LSTM model for predicting interface depth

The study area in parts of the northeastern region of India that lies between the spatial coordinates 25–27°N Latitude and 93–95° E Longitude exposed to two young orogenic belts (Fig. 1); E-W trending Himalayan collision tectonic belt in the north and N-S trending Indo-Burmese Ranges (IBR) of subduction zone towards east.

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Gravity distribution characteristics and their relationship with the

The North–South Seismic Belt (NSSB) is a Chinese tectonic boundary with a very complex structure, showing a sharp change in several geophysical field characteristics. To study these characteristics and their relationship with the distribution of earthquakes and faults in the study area, we first analyze the spatial gravity anomaly to achieve ...

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(PDF) ASSAM-ARAKAN BASIN

NE-SW is the older grain whereas east north east- west south west (ENE-WSW) is the . ... TECTONIC MAP OF NORTH-EASTERN INDIA. ... stream and a couple in the push belts, related with Naga-Patkai ...

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Crustal structure of Northeast India as evidenced by

Northeast India is a mosaic of complex tectonic blocks, i.e. Brahmaputra River Valley (BRV), Shillong Plateau (SP), Bengal Basin (BB) and Indo-Burmese Wedge (IBW), bounded by the eastern Himalayan collision zone to the north and the oblique Indo-Burmese subduction zone to the east (Chen and Molnar 1990; Nandy 2001).The SP flanking the …

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Geologic History of the Northeastern United States

The Big Picture. The geologic history of the northeastern United States is a story of active mountain building and the quieter processes of weathering, erosion, and deposition of sediments.The Northeast is at the edge of a continent (North America), but in the middle of a plate (the North American plate), which extends from the mid-Atlantic ridge to the West Coast.

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3D electrical structure and crustal deformation of the Lajishan

1. Introduction. The Lajishan tectonic belt (LTB) is the most-recently active orogenic belt in the northeastern Tibetan Plateau, and has experienced many episodes of strong tectonism (Clark and Royden, 2000, Lease et al., 2011, Lease et al., 2012, Zuo et al., 2001, Yuan et al., 2013).The northern bounding thrust fault placed early Paleozoic–Mesozoic basement rocks …

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Tectonic affinity of the west Qinling terrane (central China): North

1. Introduction [2] The Qinling orogen separates the north China block from the south China block and links the Kunlun and Qilian orogens to the west, with the Dabie-Sulu orogen to the east (Figures 1a and 1b).These terranes make up an important tectonic zone in eastern Asia [Zhang et al., 1995, 1996, 2004; Meng and Zhang, 2000; Ratschbacher et al., 2003].

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Paleoproterozoic Gneissic Granites in the Liaoji Mobile Belt, North

The Liaoji orogenic belt is one of the three Paleoproterozoic mobile belts on the NCC, located in the eastern part of the Eastern Block (Fig. 7.1; Luo et al. 2008; Zhao et al. 2005).The belt consists of greenschist to lower amphibolite facies metasedimentary, metavolcanic successions, meta-granitic and mafic intrusions with metamorphic age of ca. 1.9 Ga (Yin and …

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Significance of neotectonics in assessing the relative tectonic

Significance of neotectonics in assessing the relative tectonic activity in and around the Mat Fault of Eastern Himalayan Fold Belt, Mizoram, north‐east India February 2022 Geological Journal 57(6)

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Tectonic evolution of the Sevier and Laramide belts within the …

Generalized map of the North American Cordilleran system shows current distribution of major tectonic elements, including Jurassic–Eocene accretionary complexes, …

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Map showing the tectonic setting of North-east India. Inset map

Download scientific diagram | Map showing the tectonic setting of North-east India. Inset map represents the location of the study area. The study area is divided into four blocks A (89°E–95°E ...

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The Tectonic and Structural Classifications of the Western Part of …

Zagros fold and thrust belt locate to the north and northeast of the Arabian Plate and is part of the Alpine- Himalayan belt. ... (Fig.5). Figure 4: Tectonic settings of the Zagros fold and thrust belt showing the major tectonic belts [modified after 16] 76 Maher T. Zainy et al. Figure 5: Simplified transverse cross section of the Zagros active ...

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The Tectonic and Structural Classifications of the Western …

Zagros fold and thrust belt locate to the north and northeast of the Arabian Plate and is part of the Alpine- Himalayan belt. Zagros fold and thrust belt extends more ... Figure 4: Tectonic settings of the Zagros fold and thrust belt showing the major tectonic belts …

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Tectonic framework of the high‐pressure metamorphic rocks of …

In this study, we made a review of the published metamorphic and geochronological data of an array of high-pressure metamorphic rocks from the Nagaland Ophiolite Complex, North-east India, and present them in the tectonic framework of two temporally separate subduction systems within the eastern arm of the Neo-Tethys.

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Nature and tectonic setting of the Paleotethyan giant igneous belt …

Summary of the reported ages and frequencies for the Late Paleozoic–Early Mesozoic igneous rocks along the giant igneous belt in (a) SW China, NW Laos, East …

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A Reappraaisal of the Geology, Geochemistry, Structures and Tectonics

The largest segment of the Neoproterozoic Mozambique belt in Kenya occurs east of the north-south oriented Rift system. Geological works carried out in the country during the last few decades have progressively revealed the complexity of the geology, structures and tectonics of the Mozambique belt in the region.

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The Tectonic and Structural Classification of the Western …

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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