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Altitude and lithology of Churiya, Fore and Trans Himalaya

Short answer

The Churiya (Siwalik) range has altitude 300-1500 m and consists of poorly consolidated sandstone, mudstone, and conglomerate. The Fore Himalaya (Mahabharat, Midland) spans 1000-3000 m with phyllite, slate, schist, quartzite, limestone, and granite. The Trans Himalaya (Tethys) lies at 2500-5000 m with fossiliferous Palaeozoic-Cretaceous limestone, shale, sandstone.

Describe the altitude and lithology of the Churiya range, Fore Himalaya and Trans Himalaya.

Churiya (Siwalik) range

  • Altitude: about 300-1500 m (up to 2000 m).
  • Lithology: sandstone, mudstone, siltstone and conglomerate (Lower, Middle and Upper Siwalik); soft, poorly consolidated.

Fore Himalaya (Midland / Mahabharat region)

  • Altitude: roughly 1000-3000 m (about 2000-3000 m in the Mahabharat range).
  • Lithology: phyllite, slate, schist, quartzite, limestone, dolomite, gneiss and granite (Lesser Himalayan rocks).

Trans Himalaya (Tibetan-Tethys, Inner Himalaya)

  • Altitude: about 2500-5000 m (rain-shadow plateau).
  • Lithology: Palaeozoic to Cretaceous fossiliferous sedimentary rocks: limestone, shale, sandstone, slate and quartzite.

The altitude limits are approximate textbook values, and vary between authors.

✓ Answer checked by Claude Opus 5.5 (high effort)

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