Volume 1

A manual of the geology of India / chiefly compiled from the observations of the Geological Survey.

Date:
1879-1887
Catalogue details

Licence: Public Domain Mark

Credit: A manual of the geology of India / chiefly compiled from the observations of the Geological Survey. Source: Wellcome Collection.

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    CHAPTER XVII. PENINSULAR AREA. POST-TERTIARY AND RECENT FORMATIONS—Continued. — (w. T. B. PAGE Indo-Gangetic alluvium : area and ele- vation . . . . . . .391 Origin of the Gangetic plain : no evi- dence of marine conditions in Upper India 393 Sub-recent marine conditions in the Indus area ..... 394 Character of Indo-Gangetic alluvium . 396 Calcutta borehole .... 397 Umballa borehole . ,. > . . 401 Fossils in Indo-Gangetic alluvium . 402 General surface features of the Indo- Gangetic plan 403 Bliabar, Tarai, Bhangar, and Khadar . 403 Bhur land ' . 404 JrAUB The Brahmaputra valley in Assam . 405 The delta of the Ganges and Brahma- putra 4-05 Mr. Fergusson’s theory '106 The Madupur jungle . 408 Plains of Upper Bengal and North- West Provinces . 410 Kalar or Reh 413 Salt wells .... 415 The Punjab 415 Ancient changes in the course of the Punjab rivers 415 The lost river of the Indian desert 416 The Lower Indus Valley and Delta 417 The Ran of Cutch. . 420 CHAPTER XVIII. PENINSULAR AREA. POST-TERTIARY AND RECENT FORMATIONS—Continued.—(w. T. B. PAGE Alluvium of the East Coast. . • . 422 Estuarine shells in the alluvium . . 423 Alluvium of the west coast of India . 424 Bombay ...... 424 Guzerat ...... 425 Kattywar and Cutch . . . 426 Littoral concrete: shelly grits of Bombay, Kattywar, &c. . . . 426 Lake deposits 427 Soils 427 Red soil 429 Black soil, cotton soil, or regur (regad) 429 Distribution 431 PAGE Origin ' . 432 Peat . 434 Blown sand 435 Indian desert’ . .' . . . 436 Other desert tracts . . . . 439 Sand denudation and stria) on rocks . 439 Pot-holes in river-beds. . . . 439 Pre-historic human implements : stone 410 Palaeolithic 441 Flakes or stone knives and cores . . 441 Neolithic ...... 412 Copper, silver, and bronze implements . 443 Iron implements 443