Geomorphic evolution of Medziphema intermontane basin and Quaternary deformation in the schuppen belt, Nagaland, NE India

Aier, Imtiwapang; Luirei, Khayingshing; Bhakuni, S. S.; Thong, Glenn T.; Kothyari, Girish Ch

doi:10.1127/0372-8854/2011/0055-0048

Cited by 22 publications

(8 citation statements)

References 26 publications

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“…Most displacements observed in the bedrock are normal faults. Aier et al () also reported normal faults from the Medziphema intermontane basin that truncate strath terraces and the overlying fill sediments. Tilted fill sediments are reported from various sections of the study area.…”

Section: Discussionmentioning

confidence: 97%

“…Compression perpendicular to the NT zone has formed small‐scale thrust propagation folds that have crumpled even the overlying Quaternary fill sediments (Figure c). Tectonic activity of the NT is evident from thrusting of Neogene rocks over Quaternary fill sediments along the NT (Aier et al, ). Reactivation of the NT has led to realignment of the pebbles overlying the bedrock along localized thrust planes (Figure c).…”

Section: Discussionmentioning

confidence: 99%

“…The PT separates the Jenam and Renji formations of the Barail Group. The DT separates the hanging wall of the Disang from the footwall of the Barail (Aier et al, ). Kent and Dasgupta () suggested that normal faults were reactivated and inverted by compression, associated with the formation of imbricate structures propagating from the southeast during the Plio‐Pleistocene.…”

Section: Geological Settingmentioning

confidence: 99%

“…During the Alpine orogenesis, the Indian, Eurasian, and Sunda plates began converging, which resulted in the development of a tectonically complicated structural framework of NE India and the adjoining regions (Le Fort, ; Molnar & Tapponnier, ; Tapponnier, Peltzer, & Armijo, ). The N–S compression of the Indian Plate and its anticlockwise rotation along the Indo‐Myanmar Range resulted in the subduction of the Indian Plate under the Burma Plate (Imchen, Thong, & Pongen, ; Mitchell & McKerrow, ); movements are presumably continuing at the present day (Aier, Luirei, Bhakuni, Thong, & Kothyari, ; Bhattacharjee, ; Nandy, ; Verma, ). This region, considered tectonically active (Angelier & Baruah, ; Thingbaijam et al, ), is placed at the highest level of seismic hazard potential (Bhatia, Kumar, & Gupta, ; Srivastava, Misra, Agarwal, Bhakhuni, & Luirei, ).…”

Section: Introductionmentioning

confidence: 99%

“…This structurally complex area (Figure ) is affected by a number of regional thrusts, normal faults, and strike‐slip faults. This study area, considered tectonically active (Aier et al, ), with all thrusts trending approximately NE–SW (Figure ), is part of the Belt of Schuppen (BoS).…”

Section: Introductionmentioning

confidence: 99%

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Late Quaternary deformation in parts of the Belt of Schuppen of Dimapur and Peren districts, Nagaland, NE India

et al. 2019

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Geomorphic evidences and geochronology suggest recent tectonic activity in the Belt of Schuppen of Dimapur and Peren districts of Nagaland. Multiple levels of strath terraces forming remarkable geomorphic expressions are observed along the Chathe and Jharnapani river valleys. They indicate episodic uplift of the hanging-wall blocks of the thrust systems. The major lineaments prominently trend parallel to the NE-SW regional thrusts, some being perpendicular or oblique. Active normal faults displacing bedrock and overlying fill sediments point to recent tectonic activity. The parallel and trellis drainage patterns are lineament-controlled. Uplift of the terrain is evident from successive palaeochannels of the Chathe River younging towards the southwest.Three major aggradational phases of the terrace sediments are inferred from optically stimulated luminescence (OSL) chronology, the oldest beginning around 21 ka, the second around 11-7 ka, and the youngest between 3.5 and 1 ka. A sand lens of a tilted strath terrace exposed between Kukidolong and Chumukedima is dated at 7 ka, indicating tectonic events after 7 ka. Five major phases of bedrock uplift/incision have been estimated during 20 ka (0.13 mm/year), 11 ka (0.92 mm/ year), 9 ka (2.29 mm/year), 6 ka (0.67 mm/year), and 1.8 ka (2.6 mm/year). Transverse topographic symmetry and asymmetry factor data suggest tilting towards the NE and SW. Other morphometric indices, such as channel sinuosity, stream length gradient index, valley floor to valley height ratio, and mountain front sinuosity, suggest that the area is tectonically active, which corroborates field observations.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Late Quaternary deformation in parts of the Belt of Schuppen of Dimapur and Peren districts, Nagaland, NE India

et al. 2019

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Active tectonics and earthquake potential of the Myanmar region

et al. 2014

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This paper describes geomorphologic evidence for the principal neotectonic features of Myanmar and its immediate surroundings. We combine this evidence with published structural, geodetic, and seismic data to present an overview of the active tectonic architecture of the region and its seismic potential. Three tectonic systems accommodate oblique collision of the Indian plate with Southeast Asia and extrusion of Asian territory around the eastern syntaxis of the Himalayan mountain range. Subduction and collision associated with the Sunda megathrust beneath and within the Indoburman range and Naga Hills accommodate most of the shortening across the transpressional plate boundary. The Sagaing fault system is the predominant locus of dextral motion associated with the northward translation of India. Left-lateral faults of the northern Shan Plateau, northern Laos, Thailand, and southern China facilitate extrusion of rocks around the eastern syntaxis of the Himalaya. All of these systems have produced major earthquakes within recorded history and continue to present major seismic hazards in the region.

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Organic geochemistry and petrology of the coals in the Laisong Formation, Naga Schuppen Belt, NE India: Inferences on hydrocarbon potential and depositional environment

et al. 2021

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The Oligocene Laisong Formation in the Naga Schuppen Belt is coal bearing along the Dimapur-Kohima Road section, Nagaland. The coals are sulphurous and classified as lignite to sub-bituminous 'C' based on various rank parameters. The coals are dominantly composed of vitrinite followed by inertinite and liptinite in order of abundance. The coals have high-quality Type III kerogens derived mainly from angiosperm plants. The richness and quality of organic matter in the coal is excellent to act as a petroleum source rock. Most of the maturity parameters indicate that maturity ranges from immature to early mature. The biomarker parameters and facies critical maceral associations point to deposition of the coal-bearing strata in non-marine/ terrestrial depositional environment under moist hydrodynamic conditions, possibly in an upper delta plain environment. However, the high sulphur content of the coal points to deposition in a lower delta plain environment. Comparison with other Palaeogene coal deposits of the same sedimentary basin shows that the Laisong coals contain lesser amount of liptinite macerals and much higher amount of sulphur than these deposits. All these deposits are of similar rank, however, the Laisong coals show marginally low thermal maturity from the viewpoint of hydrocarbon generation.

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Geomorphic evolution of Medziphema intermontane basin and Quaternary deformation in the schuppen belt, Nagaland, NE India

Cited by 22 publications

References 26 publications

Late Quaternary deformation in parts of the Belt of Schuppen of Dimapur and Peren districts, Nagaland, NE India

Late Quaternary deformation in parts of the Belt of Schuppen of Dimapur and Peren districts, Nagaland, NE India

Active tectonics and earthquake potential of the Myanmar region

Organic geochemistry and petrology of the coals in the Laisong Formation, Naga Schuppen Belt, NE India: Inferences on hydrocarbon potential and depositional environment

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