Phased cooling of the Siang antiform, Eastern Himalaya: Insight from multi-thermochronology and thermal studies

Salvi, Dnyanada; Mathew, George; Pande, Kanchan; Kohn, Barry P.

doi:10.1007/s12040-020-01541-7

Cited by 8 publications

(2 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This unequivocal increase in Trans-Himalayan Arc grains is balanced by a decrease in the proportion of GHS + THS + uLHS grains from ∼50% to 60% in the Barail and lower Surma Groups to ∼10% in the upper Surma and Tipam Groups. LHS sources do not contribute significantly to the IBR basin, perhaps because large parts of this terrane may not have been exhumed until the late Miocene or later (DeCelles et al, 2016;Long et al, 2012;Salvi et al, 2021;.…”

Section: Delineation Of Himalayan Source Terranes and Their Stratigraphic Trendsmentioning

confidence: 99%

Provenance Shifts During Neogene Brahmaputra Delta Progradation Tied to Coupled Climate and Tectonic Change in the Eastern Himalaya

Betka

Thomson

Sincavage

et al. 2021

Geochem Geophys Geosyst

View full text Add to dashboard Cite

Peripheral foreland basins and flanking remnant ocean basins preserve stratigraphic and structural records of continental collisions (Beaumont, 1981), where the rates of sediment accumulation and foredeep delta progradation depend on the erosional response to both tectonic and climatic processes (e.g., Clift & Jonell, 2021;Raymo and Ruddiman, 1992). The Siwalik, Indus, and Bengal basins of the Himalayan foreland preserve more

show abstract

Section: Delineation Of Himalayan Source Terranes and Their Stratigraphic Trendsmentioning

confidence: 99%

Provenance Shifts During Neogene Brahmaputra Delta Progradation Tied to Coupled Climate and Tectonic Change in the Eastern Himalaya

Betka

Thomson

Sincavage

et al. 2021

Geochem Geophys Geosyst

View full text Add to dashboard Cite

show abstract

“…This syntaxial bend contains north-trending eastern and western flanking belts cored by Siang antiform while the Namche-Barwa Massif forms the northernmost extremity of the Siang antiform. Most of the geological investigations in this region have been focused on the Namche-Barwa Massif and the Siang Antiform (Burg et al, 1998;Burg, Davy, Nievergelt, & Oberli, 1997;Choudhuri, Gururajan, & Bikramaditya, 2009;Ding, Zhong, Yin, Kapp, & Harrison, 2001;Salvi, Mathew, Pande, & Kohn, 2021;Tu et al, 2015;Tu, Ji, Gong, Yan, & Han, 2016) with only a few recent investigations of exhumation histories of the western and eastern flanking belts (Haproff et al, 2020;Kumar, Lal, Singh & Jain, 2007;Pebam, Jain, Kumar, Singh, & Lal, 2008;Salvi et al, 2020;Figure 1b). Thus, the lack of complete knowledge of the exhumation record has inhibited us from hypothesizing a complete evolutionary model of the easternmost sector of the Himalayan-Tibetan Orogenic Belt.…”

mentioning

confidence: 99%

Tectonothermal evolution of the Lohit Valley, Eastern Himalaya: New low‐temperature thermochronological constraints

et al. 2022

View full text Add to dashboard Cite

The present contribution provides the first low-temperature thermochronological record from the Lohit Valley, Eastern Himalaya, presenting eight ZHe and two AHe cooling ages across the major tectonic boundaries. The ZHe cooling ages range from 6.94 ± 1.17 Ma to 12.51 ± 2.84 Ma, whereas AHe ages vary between 1.73 ± 0.15 Ma and 3.56 ± 0.42 Ma. The ZHe cooling ages suggest that the Mishmi Crystallines exposed at the southwestern mountain front are the slowest exhuming domain since ~12 Ma. The ZHe ages are youngest in the Demwe Thrust (DT) zone, and the contact between the frontal low-grade metamorphic rocks of Mishmi Crystalline and high-grade gneissic rocks of the Mayodia Group. The rapid exhumation in the DT zone as obtained from the ZHe cooling ages suggests an out-of-sequence thrusting at ~7 Ma. The QTQt thermal history modelling of the co-genetic pairs of ZHe and AHe cooling ages of the northeasternmost Lohit Plutonic Complex suggests that the exhumation rates in this region were as high as ~3.7 mm/year during the Pliocene-Quaternary. These high exhumation rates are in good correlation with the local topographic relief, hill slopes, and channel steepness, which suggests the establishment of the present-day topography of the Lohit valley region at the latest by Pliocene-Quaternary. Variation in exhumation rates does not correlate with the present-day precipitation pattern. Tectonics appears to be the prime driver for exhumation rates of the Lohit valley region of the easternmost Himalaya.

show abstract

Seismotectonics of Siang Valley and Adjoining Region Inferred from Focal Mechanism Solutions Using Waveform Inversion

Pal,

Yadav,

Gupta

et al. 2024

Pure Appl. Geophys.

View full text Add to dashboard Cite

Phased cooling of the Siang antiform, Eastern Himalaya: Insight from multi-thermochronology and thermal studies

Cited by 8 publications

References 48 publications

Provenance Shifts During Neogene Brahmaputra Delta Progradation Tied to Coupled Climate and Tectonic Change in the Eastern Himalaya

Provenance Shifts During Neogene Brahmaputra Delta Progradation Tied to Coupled Climate and Tectonic Change in the Eastern Himalaya

Tectonothermal evolution of the Lohit Valley, Eastern Himalaya: New low‐temperature thermochronological constraints

Seismotectonics of Siang Valley and Adjoining Region Inferred from Focal Mechanism Solutions Using Waveform Inversion

Contact Info

Product

Resources

About