The Himalayan mountain system is a young fold mountain chain formed by the collision between the Indian Plate and the Eurasian Plate during the Cenozoic era. Structurally, the orogenic belt spans an arc of approximately 2,400 kilometres from the Indus Gorge in the west to the Brahmaputra Gorge in the east. Geomorphologically, the system is classified into three longitudinal parallel ranges separated by major tectonic fault lines: the Greater Himalayas (Himadri), the Lesser Himalayas (Himachal), and the Outer Himalayas (Shiwaliks). The Main Central Thrust (MCT) separates the crystalline Himadri from the sedimentary-metamorphic Himachal, while the Main Boundary Thrust (MBT) delineates the Himachal from the molasse deposits of the Shiwalik range. Further south, the Himalayan Frontal Fault (HFF) separates the Shiwaliks from the Indo-Gangetic Plains. The Greater Himalayas host the highest peaks on Earth, including Mount Everest (8,848.86 m) and Kanchenjunga (8,586 m). High-altitude mountain passes maintain historical trade routes and strategic trans-Himalayan connectivity, including Zojila in Ladakh, Shipki La and Rohtang in Himachal Pradesh, Lipulekh and Mana in Uttarakhand, and Nathu La and Jelep La in Sikkim. At both terminals, the ranges undergo sharp southward syntaxial bends at Nanga Parbat and Namcha Barwa.
High-yield conceptual summaries for competitive exams and rapid revision.
Formed by continent-continent collision between the Indo-Australian and Eurasian tectonic plates during the Tertiary period.
Structural longitudinal division: Greater Himalayas (Himadri, average height 6,000 m), Lesser Himalayas (Himachal, 3,700-4,500 m), and Outer Himalayas (Shiwaliks, 900-1,100 m).
Major boundary faults: Main Central Thrust (MCT between Himadri and Himachal), Main Boundary Thrust (MBT between Himachal and Shiwaliks), and Himalayan Frontal Thrust (HFT/HFF).
Notable Himalayan passes: Zojila (Srinagar-Leh highway), Shipki La (Sutlej gorge entry into India), Nathu La (Sikkim-Tibet trade route), and Lipulekh (Uttarakhand-Tibet).
Distinct syntaxial bends terminate the range abruptly around Nanga Parbat in the west and Namcha Barwa in the east.
Showing 25 Curated Questions177 Total in Bank
1ID: GK-DMGT-00543
mediumEarthquakes, Seismic Zonation & Landslides
What slow-moving, large-scale geological process in the Higher Himalayas involves profound gravity creep of entire mountain ridges over millennia without a distinct discrete slip surface?
Verified Explanation
Deep-Seated Gravitational Slope Deformations (DSGSD) are large-scale, very slow rock slope deformational processes affecting entire mountain massifs in high-relief orogenic belts like the Himalayas. Unlike ordinary landslides that fail rapidly along a clear basal shear plane, DSGSD involves profound internal stress relaxation, ridge crest splitting (sackung), uphill-facing scarps, and valley bulging over thousands of years, pre-disposing valley slopes to catastrophic secondary rock avalanches.
2ID: GK-GEOG-00341
hardPhysiography & Mountain Ranges
Which geological fault/thrust separates the Lesser Himalayas (Himachal) from the Siwalik Outer Himalayan ranges?
Verified Explanation
The Main Boundary Thrust (MBT) separates the Lesser Himalayas from the Sub-Himalayas (Siwaliks), while the Main Central Thrust (MCT) separates the Greater Himalayas from the Lesser Himalayas.
3ID: GK-GEOG-00651
easyPhysiography & Mountain Ranges
Which narrow belt of porous pebble deposits runs parallel to the foothills of the Shiwaliks where rivers descending from the Himalayas disappear underground?
Verified Explanation
Bhabar is a narrow porous tract (8 to 16 km wide) along the Shiwalik foothills composed of pebbles and unassorted sediments. Streams descending from the Himalayas seep underground in this porous gravel zone and re-emerge further south in the marshy Tarai belt. Bhangar and Khadar represent older and newer alluvial plains downstream.
4ID: GK-GEOG-00652
easyPhysiography & Mountain Ranges
What geographical term refers to the longitudinal structural valleys lying between the Lesser Himalayas (Himachal) and the Shiwalik Range?
Verified Explanation
Duns (or Doons) are longitudinal synclinal valleys formed between the Lesser Himalayas and the Shiwalik foothills, filled with coarse gravels and alluvium. Prominent examples include Dehradun, Kotli Dun, and Patli Dun. Karewas are lacustrine clay deposits of Kashmir, while Kayals are coastal backwaters in Kerala.
5ID: GK-GEOG-00656
hardPhysiography & Mountain Ranges
Which major regional thrust fault separates the Greater Himalayas (Himadri) from the Lesser Himalayas (Himachal) along the Himalayan arc?
Verified Explanation
The Main Central Thrust (MCT) is a major tectonic boundary fault that separates the crystalline high-grade metamorphic rocks of the Greater Himalayas from the sedimentary and low-grade metamorphic rocks of the Lesser Himalayas. The Main Boundary Thrust (MBT) separates the Lesser Himalayas from the Shiwaliks, while the Himalayan Frontal Thrust (HFT) bounds the Shiwaliks against the Indo-Gangetic Plains.
6ID: GK-GEOG-00757
easyPhysiographic Divisions & Geomorphology of India
Longitudinal structural valleys formed between the Lesser Himalayas and the Shiwalik Range, such as Dehradun and Kotli Dun, are termed what?
Verified Explanation
Duns are flat-bottomed, longitudinal structural depressions and synclinal valleys situated between the Himachal (Lesser Himalayas) and the Shiwalik foothill ranges. Dehra Dun, Kotli Dun, and Pinjore Dun are prominent examples characterized by thick gravelly alluvium. Duars are the alluvial floodplains and piedmont tracts in the Eastern Himalayas.
7ID: GK-GEOG-00758
mediumPhysiographic Divisions & Geomorphology of India
Which major tectonic thrust plane separates the high-grade metamorphic Greater Himalayas (Himadri) from the Lesser Himalayas (Himachal)?
Verified Explanation
The Main Central Thrust (MCT) is a major north-dipping regional fault zone separating the high-grade metamorphic crystalline rocks of the Greater Himalayas from the sedimentary and low-grade metasedimentary rocks of the Lesser Himalayas. The Main Boundary Thrust (MBT) separates the Lesser Himalayas from the Shiwaliks, and the Himalayan Frontal Thrust (HFT) marks the boundary with the Indo-Gangetic Plains.
8ID: GK-GEOG-00856
mediumPhysiographic Divisions & Geomorphology of India
Which structural tectonic fault zone marks the direct boundary between the Lesser Himalayas and the outer Shivalik foothills?
Verified Explanation
In the longitudinal tectonic framework of the Himalayas, the Main Boundary Thrust (MBT) separates the Lesser Himalayas from the sub-Himalayan Shivalik zone. The Main Central Thrust (MCT) separates the Higher (Greater) Himalayas from the Lesser Himalayas, the Himalayan Frontal Thrust (HFT) demarcates the Shivaliks from the Indo-Gangetic Alluvial Plain, and the Indus-Tsangpo Suture Zone (ITSZ) separates the Eurasian Plate from the Indian Plate.
9ID: GK-GEOG-00878
hardIndian River Systems & Drainage Basins
Which antecedent Himalayan river originates from the Mapchachungo Glacier near Mansarovar Lake, cuts a transverse gorge across the Greater Himalayas, and joins the Ganga at Revelganj in Bihar?
Verified Explanation
The Ghaghara (known as the Karnali in Nepal) rises in the glaciers of Mapchachungo on the Tibetan plateau south of Lake Mansarovar. It traverses the Himalayas through deep gorges at Shisapani, enters the plains of Uttar Pradesh as the Sarda/Ghaghara, gathers major tributaries like the Rapti and Seti, and meets the Ganga at Revelganj near Chhapra in Bihar.
10ID: GK-GEOG-00954
easyPhysiographic Divisions & Geomorphology of India
What geographical term refers to the flat-bottomed longitudinal structural valleys formed between the Lesser Himalayas and the Shivaliks?
Verified Explanation
Duns are longitudinal valleys created by tectonic depressions between the Lesser Himalayas (Himachal) and the outer Shivalik Range, filled with coarse alluvial detritus. Notable examples include Dehra Dun, Kotli Dun, and Patli Dun. Bugyals are alpine meadows, Karewas are lacustrine terraces, and Kayals are coastal backwaters.
11ID: GK-GEOG-00960
mediumPhysiographic Divisions & Geomorphology of India
Which major tectonic discontinuity separates the Higher (Greater) Himalayas from the Lesser (Lower) Himalayas along the entire Himalayan arc?
Verified Explanation
The Main Central Thrust (MCT) is a major ductile shear zone and thrust fault separating the high-grade metamorphic rocks of the Higher Himalayas (Central Crystallines) from the low-grade metasedimentary rocks of the Lesser Himalayas. The MBT separates the Lesser Himalayas from the Sub-Himalayas (Shivaliks), HFT separates Shivaliks from the Indo-Gangetic Alluvium, and ITSZ marks the collision suture between the Indian plate and Eurasian plate.
12ID: GK-GEOG-00961
hardPhysiographic Divisions & Geomorphology of India
According to the regional classification of the Himalayas by Sir Sidney Burrard, which two rivers demarcate the boundaries of the Kumaon Himalayas?
Verified Explanation
Sir Sidney Burrard classified the Himalayas regionally based on river gorges: Punjab/Kashmir Himalayas (between Indus and Satluj, 560 km), Kumaon Himalayas (between Satluj and Kali, 320 km), Nepal Himalayas (between Kali and Teesta, 800 km), and Assam Himalayas (between Teesta and Brahmaputra/Dihang, 720 km).
13ID: GK-LANG-00600
hardBrahmi, Kharosthi, Devanagari & Ancient Scripts
Which historical script of the Western Himalayas, derived from Sharada, was the official court and trade script used across the princely states of Himachal Pradesh, Jammu, and Garhwal?
Verified Explanation
Takri (or Tankri) evolved from the Sharada script and served as the administrative, legal, and commercial script for Western Pahari languages (Kangri, Mandeali, Chambeali, Dogri, Jaunsari) for centuries.
14ID: GK-RECD-00533
easyWorld Superlatives Geo
What is the highest mountain peak above sea level on Earth, situated in the Mahalangur Himal sub-range of the Himalayas with an officially surveyed elevation of 8,848.86 metres?
Verified Explanation
Mount Everest, located on the border of Nepal and China (Tibet), is Earth's highest mountain above sea level, jointly measured at 8,848.86 m in December 2020.
15ID: GK-GEOG-00088
easyRivers Drainage
Which river is known as the Yarlung Tsangpo in Tibet before it cuts through the eastern Himalayas into India?
Verified Explanation
The Yarlung Tsangpo flows eastwards through southern Tibet before turning sharply around Mount Namcha Barwa into India.
16ID: GK-GEOG-00091
mediumPhysiography
Which mountain pass connects the Kashmir Valley with the Ladakh region across the Great Himalayas?
Verified Explanation
Zoji La pass (approx 3,528 m) on NH-1 connects Srinagar with Kargil and Leh in Ladakh.
17ID: GK-GEOG-00139
hardForests Wildlife
Which endemic conifer tree species found in the temperate forests of the Western Himalayas is revered for high-grade timber and aromatic resin?
Verified Explanation
Cedrus deodara grows at elevations between 1,500 and 3,000 meters and has historically been used for temple architecture, railways, and construction.
18ID: GK-GEOG-00171
mediumPhysiography & Mountain Ranges
Which high-altitude mountain pass connects the Kashmir Valley with the Kargil and Leh districts in Ladakh across the Great Himalayas?
Verified Explanation
Zoji La (elevation 3,528 m) on National Highway 1 is the vital strategic mountain pass linking Srinagar with Kargil and Leh in Ladakh.
19ID: GK-GEOG-00220
easyTransport & Ports
Which mountain pass connects Srinagar with Leh in Ladakh across the Great Himalayas?
Verified Explanation
Zoji La is a strategic high-altitude mountain pass at 3,528 metres (11,575 ft) connecting the Kashmir Valley with the Ladakh plateau along NH-1.
20ID: GK-GEOG-00223
mediumClimate & Monsoon
The 'Western Disturbances' that cause critical winter precipitation in Northwest India and snowfall in the Himalayas originate over which water body?
Verified Explanation
Western Disturbances are extra-tropical storms originating in the Mediterranean region that travel eastwards guided by the subtropical westerly jet stream.
21ID: GK-GEOG-00235
mediumPhysiography & Mountain Ranges
Which pass located on the Greater Himalayas connects the state of Sikkim with the Tibet Autonomous Region of China?
Verified Explanation
Nathu La is a Himalayan mountain pass in East Sikkim district at 4,310 metres (14,140 ft) that was an offshoot of the ancient Silk Road and reopened for border trade in 2006.
22ID: GK-GEOG-00309
easyRiver Systems & Drainage
Which major tributary of the Ganga originates from the Yamunotri Glacier on the Banderpooch peak in the Garhwal Himalayas?
Verified Explanation
The Yamuna River originates at an elevation of 6,387 metres from the Yamunotri Glacier on the southwestern slopes of the Banderpooch peak.
23ID: GK-GEOG-00321
mediumPhysiography & Mountain Ranges
Which mountain pass connects the Kashmir Valley with Ladakh and is located on the Great Himalayas along NH 1?
Verified Explanation
Zoji La is a high mountain pass situated at an elevation of 3,528 metres, providing a vital strategic link between Srinagar and Leh.
24ID: GK-GEOG-00324
mediumState Facts, Capitals & UTs
Which mountain pass in the Greater Himalayas connects the Kashmir Valley with the Ladakh region at an altitude of 3,528 meters?
Verified Explanation
Zojila Pass on National Highway 1 connects the Kashmir Valley with Dras and Ladakh.
25ID: GK-GEOG-00348
hardPhysiography & Mountain Ranges
Which strategic mountain pass in the Himalayas connects Srinagar and the Kashmir Valley with Dras, Kargil, and Leh in Ladakh?
Verified Explanation
Zoji La is a high mountain pass at an altitude of 3,528 metres that connects the Kashmir Valley with the Ladakh region.