Sedimentary Thickness Variations in the Indo-Gangetic Foredeep from Inversion of Receiver Functions

Srinivas, D.; Srinagesh, D.; Chadha, R. K.; Kumar, M. Ravi

doi:10.1785/0120120046

Cited by 49 publications

(35 citation statements)

References 12 publications

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“…The average sedimentary layer velocities for the most of the stations of our study region of western part of Siwalik Himalaya and Indo-Gangetic Plain are 1.6-2.0 km/s. This is in agreement with the results obtained by Srinivas et al (2013) and Hetenyi et al (2006) (Fig. 1).…”

Section: Discussionsupporting

confidence: 93%

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Sediment thickness beneath the Indo-Gangetic Plain and Siwalik Himalaya inferred from receiver function modelling

Borah

Kanna

Rai

et al. 2015

Journal of Asian Earth Sciences

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Section: Discussionsupporting

confidence: 93%

“…1). Recent receiver function (RF) study (Srinivas et al, 2013) over the IndoGangetic Plain (between 79-81°E and 26-29°N) shows sediments with Vs of 0.72-2.5 km/s and thicknesses varying from 0.7 to 3.7 km (magenta triangle in Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

Sediment thickness beneath the Indo-Gangetic Plain and Siwalik Himalaya inferred from receiver function modelling

Borah

Kanna

Rai

et al. 2015

Journal of Asian Earth Sciences

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“…1) further south have basement depths of 443.18 m and 296.49 m, respectively. Seismological results (Table 1) yield a basement depth of 500 m at Hamirpur (Srinivas et al, 2013), which is about 2.5 times more than that obtained by extrapolating the borehole data southward. Seismological data are probably not able to resolve fine layering within the sedimentary layer.…”

Section: Resultsmentioning

confidence: 71%

“…The groundwater bore well at the northeastern part of Lucknow district, shown in the district resource map (GSI, 2001b) could not reach the bedrock up to the drilled depth of 637 m indicating that the basement is certainly deeper than this depth. The seismological receiver function model (Srinivas et al, 2013) reveals a 1-kmthick layer of soft sediments at Lucknow (LUC) having abnormally low shear-wave velocity of 0.85 ± 0.15 km/s and high Vp/Vs (Table 1). This layer is underlain by a 0.2 km thick layer of shear wave velocity 2.34 ± 0.02 km/s.…”

Section: Resultsmentioning

confidence: 99%

“…Recently, Srinivas et al (2013) estimated the thicknesses of sedimentary layers, shear wave velocities, and Vp/Vs at ten broadband seismic stations located along a profile between 79°E-81°E and 24°N-29°N within the Indo-Gangetic plains. Their results reveal a single sedimentary layer of less than 1 km thickness and Vp/Vs of about 2.7 before Lucknow and a two-layered model for the sites further north.…”

Section: Geophysical Studiesmentioning

confidence: 99%

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Thick sedimentary sequence around Bahraich in the northern part of the central Ganga foreland basin

et al. 2015

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Geometry of the Main Himalayan Thrust and Moho beneath Satluj valley, northwest Himalaya: Constraints from receiver function analysis

et al. 2017

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Crustal configuration beneath the Satluj valley region of the northwest Himalaya has been studied with the help of receiver function analysis of teleseismic earthquakes recorded by 18 broadband seismological stations. These stations were located on diverse geotectonic units from the Himalayan foreland basin in the south to the Tethyan Himalaya (TH) in the north. A gentle north dipping structure of the Main Himalayan Thrust (MHT) is imaged between the Sub and Higher Himalaya in contrast to the reported ramp structure of the MHT beneath the Garhwal and Nepal Himalaya. The ramp structure is, however, identified further north, beyond the South Tibetan Detachment in Satluj valley. The depth of the MHT varies from ~16 to 27 km across the Sub, Lesser, and Higher Himalaya, and it increases to ~38 km beneath the TH forming a ramp. This is significantly a different structure of the MHT beneath the Satluj valley, which is attributed to the effect of underthrusting Delhi‐Hardwar Ridge, a transverse structure to the Himalayan arc. Conspicuously, no strong or large earthquake is observed during 1964–2015 in this segment of the Himalayan Seismic Belt. The RF modeling, on the other hand, shows ~44 km crustal thickness beneath the Himalayan Frontal Thrust (HFT), and it gradually increases to ~62 km beneath the TH. Low shear wave velocity (~0.8–1.8 km s−1) is observed in the uppermost 3–4 km of the crust beneath the stations near the HFT, which may be the effect of the sedimentary column of the Indo‐Gangetic Plain.

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Sedimentary Thickness Variations in the Indo-Gangetic Foredeep from Inversion of Receiver Functions

Cited by 49 publications

References 12 publications

Sediment thickness beneath the Indo-Gangetic Plain and Siwalik Himalaya inferred from receiver function modelling

Sediment thickness beneath the Indo-Gangetic Plain and Siwalik Himalaya inferred from receiver function modelling

Thick sedimentary sequence around Bahraich in the northern part of the central Ganga foreland basin

Geometry of the Main Himalayan Thrust and Moho beneath Satluj valley, northwest Himalaya: Constraints from receiver function analysis

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