The Kinnaur earthquake, Himachal Pradesh, India, of 19 January, 1975

Khattri, K. N.; Rai, K.; Jain, Arvind K.; Sinvhal, H.; Gaur, V. K.; Mithal, Rakesh

doi:10.1016/0040-1951(78)90095-1

Cited by 38 publications

(11 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An earthquake of M s 6.8 with shallow focal depth occurred on this rift on 19 January 1975, referred as the Kinnaur earthquake, which is the largest earthquake that has occurred on any of these rifts of the Tethys Himalaya in the past 50 years. The earthquake involved normal motion on the north‐south oriented steep plane [ Khattri et al ., ]. Since 1973, more than 50 earthquakes of M w > 4.5 have occurred along this rift, and the focal mechanisms of these earthquakes are similar to that of the Kinnaur earthquake.…”

Section: Discussionmentioning

confidence: 97%

Oblique convergence and slip partitioning in the NW Himalaya: Implications from GPS measurements

et al. 2014

View full text Add to dashboard Cite

We report GPS measurements of crustal deformation across the Kashmir Himalaya. We combined these results with the published results of GPS measurements from the Karakoram fault system and suggest that in the Kashmir Himalaya, the motion between the southern Tibet and India plate is oblique with respect to the structural trend. We estimated this almost north-south oblique motion to be 17 ± 2 mm/yr, which is partitioned between dextral motion of 5 ± 2 mm/yr on the Karakoram fault system and oblique motion of 13.6 ± 1 mm/yr with an azimuth of N198°E in the northwest-southeast trending Kashmir Himalayan frontal arc. Thus, the partitioning of the India-Southern Tibet oblique motion is partial in the Kashmir Himalayan frontal arc. However, in the neighboring Nepal Himalaya, there is no partitioning; the entire India-Southern Tibet motion of 19-20 mm/yr is arc normal and is accommodated entirely in the Himalayan frontal arc. The convergence rate in the Kashmir frontal Himalaya is about 25% less than that in the Nepal Himalayan region. However, here the Karakoram fault system accommodates about 20% of the southern Tibet and Indian plate convergence and marks the northern extent of the NW Himalayan arc sliver. The Kaurik Chango rift, a north-south oriented seismically active cross-wedge transtensional fault appears to divide the sliver in two parts causing varying translatory motion on the Karakoram fault on either side of the Kaurik Chango rift.

show abstract

Section: Discussionmentioning

confidence: 97%

Oblique convergence and slip partitioning in the NW Himalaya: Implications from GPS measurements

et al. 2014

View full text Add to dashboard Cite

show abstract

“…This swath of seismicity stretches from the Tso Morari in the north close to the MCT in the south. The largest earthquake in this seismic belt was the Kinnaur Earthquake (19 January 1975, Ms = 6.8) [ Khattri et al , 1978], which ruptured the KNCF close to the Leo Pargil gneiss dome [ Singh et al , 1975]. Importantly, since the installation of the worldwide seismic network in the 1960s, several similar major earthquakes have been located in the Sutlej region, with focal mechanisms providing additional evidence for ongoing E–W directed extension associated with these fault systems [e.g., Molnar and Chen , 1983].…”

Section: Geological Setting Of the Nw Indian Himalayamentioning

confidence: 99%

The role of extension during brittle deformation within the NW Indian Himalaya

2011

View full text Add to dashboard Cite

[1] Synorogenic extension has been recognized as an integral structural constituent of mountain belts and high-elevation plateaus during their evolution. In the Himalaya, both orogen-parallel and orogen-normal extension has been recognized. However, the underlying driving forces for extension and their timing are still a matter of debate. Here we present new fault kinematic data based on systematic measurements of hundreds of outcrop-scale brittle fault planes in the NW Indian Himalaya. This new data set, as well as field observations including crosscutting relationships, mineral fibers on fault planes, and correlations with deformation structures in lake sediments, allows us to distinguish different deformation styles. The overall strain pattern derived from our data reflects the large regional contractional deformation pattern very well but also reveals significant extensional deformation in a region, which is dominated by shortening. In total, we were able to identify six deformation styles, most of which are temporally and spatially linked, representing protracted shortening. Our observations also furnish the basis for a detailed overview of the younger deformation history in the NW Himalaya, which has been characterized by extension overprinting previously generated structures related to shortening. The four dominant deformation styles are (1) shortening parallel to the regional convergence direction; (2) arc-normal extension; (3) arc-parallel extension; and finally, (4) E-W extension. This is the first data set where a succession of both arc-normal and E-W extension has been documented in the Himalaya. Importantly, our observations help differentiate E-W extension triggered by processes within the Tibetan Plateau from arc-parallel and arc-normal extension originating from the curvature of the Himalayan orogen.Citation: Hintersberger, E., R. C. Thiede, and M. R. Strecker (2011), The role of extension during brittle deformation within the NW Indian Himalaya, Tectonics, 30, TC3012,

show abstract

“…The study of neotectonic stress patterns is important because the Himalaya is seismically active and earthquakes have occurred along different types of faults. For example, thrust (Uttarkashi earthquake, 20 October 1991, Ms 7.0, Gupta & Gupta 1995; Kangra earthquake, 4 April 1905, Mw 7.0, Middlemiss 1910; Molnar 1987), oblique‐slip normal fault (Kinnaur earthquake, 19 January 1975, Ms 6.8, Khattri et al . 1978), strike‐slip fault (a large number of low magnitude earthquakes, Khattri & Tyagi 1983; Gaur et al .…”

Section: Discussionmentioning

confidence: 99%

Anisotropy of magnetic susceptibility and petrofabric studies in the Garhwal synform, Outer Lesser Himalaya: Evidence of pop‐up klippen

Devrani¹,

Dubey²

2009

Island Arc

View full text Add to dashboard Cite

Geological field, petrographic, and anisotropy of magnetic susceptibility studies help in understanding the evolutionary history of the Garhwal synform that lies in the western Outer Lesser Himalaya. Orientations of the magnetic susceptibility axes reveal large variations at short distances as a result of superimposed deformation, and predominant stress conditions favorable for normal faulting. Rocks forming the outer limbs of the Garhwal Synform are metamorphosed up to the lower greenschist facies. The metamorphic grade increases to chlorite zone in the inner limb and the core is characterized by chlorite-biotite to garnet zones. The different grades of metamorphism are separated by thrusts and the structure is described as a pop-up klippen.i ar_628 428..443

show abstract

The Kinnaur earthquake, Himachal Pradesh, India, of 19 January, 1975

Cited by 38 publications

References 13 publications

Oblique convergence and slip partitioning in the NW Himalaya: Implications from GPS measurements

Oblique convergence and slip partitioning in the NW Himalaya: Implications from GPS measurements

The role of extension during brittle deformation within the NW Indian Himalaya

Anisotropy of magnetic susceptibility and petrofabric studies in the Garhwal synform, Outer Lesser Himalaya: Evidence of pop‐up klippen

Contact Info

Product

Resources

About