LOWER TRANSITION ROCKS. 107 



Correlations, although there is no doubt as to the westward extension 



of the conglomerates and their associated beds. The middle stream of 



three uniting at Joga is not shown on the map : it rises on the main 



range and falls down a splendid gorge with red and grey cliffs 



rising close upon, if not over, 200 feet. The predominant rock is a 



superb variety of banded jaspideous haematite rock, of vivid red and 



dark-grey black or greyish brown in stripes, and often exquisitely 



vandyked. Nowhere else did I see such splendid specimens of 



richly coloured rock as in this great Ramgol ravine. A good deal 



of rich vegetation grows near the top of the ravine, and along 



the steep scarps below it, showing what the soil is capable of bearing, 



and would do so if allowed fair play and a truce from jungle fires and 



goats. The gorge makes a great sweep to the north-west and west, 



and at the top receives two streams which drain a rather deep upland 



basin, of which the map gives no indication. The path leading from 



Joga to Hunshahuti skirts the south side of this basin. The highest 



part of the main range is the haematite bed overlooking the Sandur 



valley : it represents (doubtfully) the Timmappanghar (Timanghur) 



jaspery finely-bedded haematite rock, and is of great thickness. 



Underlying it are, in downward succession (after crossing a rather 



wide gap of 200 to 300 yards, where no rock is seen), a jaspideous 



banded haematite, schists and argillites ; another highly jaspideous 



banded haematite, red argillite, and trap ; below this come three or 



more thick haematites with intercalated schists and trappoid, which 



together form the gorge rocks. They rest on dark banded slatey rock 



(clay-slate ?), the beds of which seem to be inverted and to hang over 



i° or 2° westward. These, again, are underlaid by other dark schists 



and conglomerates to be mentioned presently. 



A considerable thickness of conglomerates with greenish 



Section on Ramgol schisty-looking matrix is seen in the bed of the 



stream * Ramgol torrent underlying the trapflow which 



forms No. 24 of the Joga low-level section. The matrix when freshly 



broken is a dense, silky textured, dark greenish-black chloritic mass. 



„, , It looks very soft externally, but is in reality 



The conglomerates. " J 



very hard and. desperately tough. All the in- 



( 107 ) 



