Surface deformation in the Himalaya and adjoining piedmont zone of the Ganga Plain, Uttarakhand, India: Determined by different radar interferometric techniques

Yhokha, Akano; Chang, Chung Pai; Goswami, Pradeep K.; Yen, Jiun-Yee; Lee, Szu I.

doi:10.1016/j.jseaes.2015.02.032

Cited by 16 publications

(8 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Goswami (2012) recognized that the Dhikla and the Pawangarh thrusts produced a piggy-back basin in Kota Dun. Several unnamed active faults of unknown absolute ages are also present in this region (review in Yhokha et al 2015). As Goswami (2012) also reported that the Tanakpur and Kalaunia faults of unknown timing cut the Bastia Fault, the former two are also out-of-sequence thrusts.…”

Section: Uttarakhand Garhwal and Kumaun (India)mentioning

confidence: 93%

“…Goswami (2012) suspected, based on crosscutting relationships, that the NNE-dipping Bastia Thrust within Uttar Pradesh and Uttarakhand Himalaya, a splay of the MBT, could be an out-ofsequence thrust. Likewise, the longitudinal Dhikla and Pawalgarh thrusts and the transverse Baru Fault that displaced the Pawalgarh Fault, the Nihal Fault and Chorgalli Fault that slipped the MFT, and the Haldwani Fault were also recognized (Yhokha et al 2015). However, the absolute timing of these faults/thrusts is not known.…”

Section: Uttarakhand Garhwal and Kumaun (India)mentioning

confidence: 99%

“…As Goswami (2012) also reported that the Tanakpur and Kalaunia faults of unknown timing cut the Bastia Fault, the former two are also out-of-sequence thrusts. Yhokha et al (2015), based on remote sensing studies, have reported the approximately northand NNE-trending Garampani -Kathgodam Fault that underwent deformation during 2008 -2010.…”

Section: Uttarakhand Garhwal and Kumaun (India)mentioning

confidence: 99%

“…The Garampani -Kathgodam Fault seems to be an oblique-slip fault with variable slip along its length (Yhokha et al 2015). It extends .100 km, passes through both the LH and SH, and has displaced the Ramgarh Thrust, the MBT and the MFT (Yhokha et al 2015).…”

Section: Uttarakhand Garhwal and Kumaun (India)mentioning

confidence: 99%

“…It extends .100 km, passes through both the LH and SH, and has displaced the Ramgarh Thrust, the MBT and the MFT (Yhokha et al 2015). Its eastern block subsided compared with the western block (Yhokha et al 2015). Mishra et al (2013) reported c. 5 -4 Ma reactivation of the Kumaun MBT based on deformation in the SH.…”

Section: Uttarakhand Garhwal and Kumaun (India)mentioning

confidence: 99%

See 4 more Smart Citations

A review on out-of-sequence deformation in the Himalaya

Mukherjee

2015

View full text Add to dashboard Cite

show abstract

Section: Uttarakhand Garhwal and Kumaun (India)mentioning

confidence: 93%

Section: Uttarakhand Garhwal and Kumaun (India)mentioning

confidence: 99%

Section: Uttarakhand Garhwal and Kumaun (India)mentioning

confidence: 99%

Section: Uttarakhand Garhwal and Kumaun (India)mentioning

confidence: 99%

Section: Uttarakhand Garhwal and Kumaun (India)mentioning

confidence: 99%

See 3 more Smart Citations

A review on out-of-sequence deformation in the Himalaya

Mukherjee

2015

View full text Add to dashboard Cite

show abstract

Controls of basin margin tectonics on the morphology of alluvial fans in the western Ganga foreland basin's piedmont zone, India

Goswami

2017

Geological Journal

Self Cite

View full text Add to dashboard Cite

Six distinct alluvial fans have developed in the western Ganga basin's piedmont zone between the Ganga (aka Ganges) River in the west and the Sarda River in the east. The basin margin is demarked by the active Himalayan Frontal Thrust along which the Siwalik ranges are uplifted and placed over the alluvia of the Ganga basin. The 6 alluvial fans show marked morphological variances, but their morphometric parameters exhibit proportionality relationships with the “mountain‐front sinuosity index (Smf),” “stream‐gradient index (SL),” and “valley‐floor width to height ratio (Vf)” of the adjoining mountain‐front segments. Correlation and regression analyses reveal that these relationships are statistically significant. The size of the fan is directly proportional to the magnitude of Smf and inversely proportional to the magnitude of SL, whereas the fan gradient is inversely proportional to Smf. The higher the Smf and the lower the SL values, the larger and gentler is the alluvial fan. Given that the studied alluvial fans have developed in the same climatic zone and their drainage basins have similar physiographic, geologic, and climatic conditions, the morphological diversities among the alluvial fans are attributed to the tectonics of the basin margin. Moreover, statistical analyses further rule out any significant relationships of the fan size with area, or drainage density of the drainage basin. The lower values of Smf and Vf and higher values of SL indicate a more active nature and, thus, greater/faster uplift of the mountain‐front and expected deepening of the accommodation space in the adjoining basin, which favoured vertical aggradation and development of smaller and steeper alluvial fans. Conversely, the higher values of Smf and Vf and lower values of SL indicate a less active nature and, thus, relatively lower/slower uplift of the mountain‐front and thus creation of shallower accommodation space in the adjoining basin, favouring the development of larger and gentler alluvial fans.

show abstract

Evaluation of neotectonic variability along major Himalayan thrusts within the Kali River basin using geomorphic markers, Central Kumaun Himalaya, India

2019

View full text Add to dashboard Cite

We have analysed the geomorphic signatures in aggregation with the geomorphic indices with respect to hinterland and foreland neotectonic variability across the major Himalayan thrust system along the Kali River valley of eastern Kumaun Himalaya. The valley floor morphology in the vicinity of the major thrust gave rise to the accommodation space for the aggradation of the recent fluvial sediments. For a longitudinal distance of 212 km between the South Tibet Detachment (STD)and Himalayan Frontal Thrust (HFT), the valley has preserved significant aggradational landforms. These landforms have been physically examined to explain the spatial and temporal variability in phases of aggradation/incision in response to the tectonic activity during the late Quaternary. Fossil valleys and associated epigenetic gorges, cut-and-fill terraces with thick alluvial cover, debris-flow terraces, bedrock strath terraces, and alluvial fan terraces are the significant aggradational landforms observed within the valley. They provide signatures of tectonic activity and past climatic records. We have analysed various geomorphic indices, namely, stream-gradient index (SL), steepness index (Ks), hypsometric curve and index (HI), and asymmetric factor (AF) to map the spatial variability in tectonic processes across the major thrusts. The channel morphology (depth and width) of a river becomes adjusted in geological time because of long-term tectonic and erosional processes. However, the channel geometry and deviations can be highly adjustable in a tectonically disturbed mountainous region. The deviations along the river course can be attributed to active tectonic movement along thrusts/faults or because of erosion/sedimentation processes. We applied a novel method called the river Gradient Length Anomaly (GLA) for 37 subbasins of the Kali River to deduce active deformation (uplift/subsidence) corresponding to the increased sedimentation and erosional rates, both from the upstream and downstream parts of the thrusted blocks, from where river flows through. The results of basin-wise morphometric indices were corroborated with GLA anomaly and field observations, which suggests that the area has undergone active deformation between the Main Central Thrust (MCT) and Himalayan Frontal Thrust (HFT), which is attributed to the regional compression. The results of geomorphic and morphometric data are validated with the focal mechanisms of moderate earthquakes. The geomorphic analysis suggests that the hinterland part of eastern Kumaun is more active than the foreland region.

show abstract

Surface deformation in the Himalaya and adjoining piedmont zone of the Ganga Plain, Uttarakhand, India: Determined by different radar interferometric techniques

Cited by 16 publications

References 44 publications

A review on out-of-sequence deformation in the Himalaya

A review on out-of-sequence deformation in the Himalaya

Controls of basin margin tectonics on the morphology of alluvial fans in the western Ganga foreland basin's piedmont zone, India

Evaluation of neotectonic variability along major Himalayan thrusts within the Kali River basin using geomorphic markers, Central Kumaun Himalaya, India

Contact Info

Product

Resources

About