STRUCTURAL GEOLOGY OF BRITISH MALAYA 569 



highest point; so here we have a continuous granite outcrop from 

 Gunong Perak to a part of the Kerbau CouHsse where there are two 

 peaks of over 7,000 ft. Between Nos. 9 and 8 the country is fairly- 

 high on the granite outcrop, but between 8 and 7, and 7 and 3, 

 it is only about 300 feet above sea-level. 



The strike of this continuous granite outcrop, across the cou- 

 lisses, is, as can be seen from Figure 2, on which I have shown the 

 granite by a conventional sign, roughly parallel to the axis of the 

 Peninsula, and to the curve of the Peninsular-Bornean arc, and shows 

 the roof of the bathylith (containing near Lenggong, as already 

 noted, isolated blocks of Hmestone from the cover). Between 9 

 and ID, however, the granite dips steeply under the older bedded 

 rocks near the line of highest granite points. The land is not high: 

 Raub is only 462 feet above sea-level, Bentong only 321, but at 

 Raub a shaft 900 feet deep shows no granite, or signs of its proximity, 

 other than the occasional occurrence of scheelite in the gold-bearing 

 veins. In the Benom Coulisse it rises again sharply and falls away 

 sharply on the other side under the Pahang Valley. 



Granite is not entirely confined to the coulisses on the surface. 

 In the low country between them small outcrops are found. Some 

 form distinct landmarks, for instance a hill at the mouth of the 

 Selangor River, and another on the coast near Kuala Lumpur. 



The composition of the granite and other igneous rocks in the 

 coulisses raises interesting problems that would be out of place to 

 discuss here. I will mention one point in this connection only, 

 that the summit of Kinabalu (13,698 ft.) at the far end of the Penin- 

 sular and Bornean arc, is formed of hornblende granite. 



There remains one point in the structure of the Peninsula to be 

 mentioned, the influence of faulting in the cover of stratified rocks 

 on the formation of limestone hills, which sometimes exceed 2,000 

 feet in height. The Hmestone hills I have mentioned in a granite- 

 area near Lenggong, and again at Kanching, and those almost 

 surrounded by granite, Batu Kurau and Gunong Pondok, suggest 

 block faulting; but the majority of the limestone hills are not in 

 the granite-areas. The greatest development of them is found in 

 the Kinta District, where their distribution and height above the 

 limestone floor of this tin-field suggest block-faulting on a large 



