508 E. S. Willboum — The Pahang Volcanic Series — 



No. 



Locality. 



1. Near Kuala Tekai, 

 Tembeling River. 



Pulau Guai 

 (Pahang Eiver). 



3. 114^ mile, railway. 



Tanjong Lindong 

 to Pulau Prias 

 (Pahang Eiver). 



Nature of 

 Boulders. 



Remarks as to Associated 

 Rocks, etc. 



Tuffs andesite. 

 Quartz -porphyry (?) 



Rhyolite - andesite - 

 tuff. Rhyolite-lava, 

 andesite - lava. 

 Quartz - porphyry 

 and porphyrite. 



Much weathered, no 

 specimens collected. 



Rhyolite, andesite, 

 and perhaps quartz- 

 porphyry. 



Country rock is Gondwana quartzites, 

 etc., yet the boulder deposits contain 

 much calcite. 



Up-stream from here the nearest sedi- 

 mentary rock in situ is Gondwana 

 quartzite 1$ miles away. 



Quartzite near 115th mile. Exposures 

 too much weathered at and near 

 114 J mile to say whether Raubs or 

 Gondwanas. 



An outcrop of Gondwana quartzite 

 occurs near Bulau Prias. 



5. 105th mile, railway. 



Andesite, trachyte, 

 rhyolite or quartz- 

 porphyry, grano- 

 phyre. 



At boundary of Gondwanas and Raubs. 

 Granophyre is in situ in Raub Series 

 rocks within 3 miles of this place. 



Kuala Jeransong 

 to Lubok Plang 

 (Pahang River). 



Rhyolite and perhaps 

 quartz-porphyry. 



Chert is interstratified with the tuffs 

 at Lubok Plang, also rhyolite-lava 

 flows. The surrounding country 

 rocks are Raubs. 



Batu Redap 

 (Pahang River). 



Felspathic grits, per- 

 haps volcanic. 



The railway is within a mile or so and 

 core-boulders of quartzite are lying 

 on limestone, so there may be a 

 junction of Gondwanas and Raubs 

 near here. 



Pulau Chengai 

 (Chengali), 

 Pahang River. 



Rhyolite and perhaps 

 rhyolite-tuff. 



Probably near boundary of Gondwana 

 and Raub rocks. 



Kuala Tekal, 87th 

 mile, railway. 



Rhyolite quartz-por- 

 phyry, and porphy- 

 rite. 



Cuttings too much weathered to deter- 

 mine whether the sedimentary rocks 

 belong to the Raub Series or whether 

 they are Gondwanas. 



