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sandstones in the cuts along the road between Mauban 

 and Luc-ban to the east. of Sampaloc, where the road lies 

 in the valley. The highland seems to be largely covered 

 with tuff. These shales, sandstones and limestone ap- 

 parently belong to the Miocene series and have been 

 folded and faulted so that the dips are variable. 



There is evidence of limestone outcrops near Pagbi- 

 lao, since the stream there has brought down limestone. 

 Just before reaching the Bagsabagsan Eiver on the road 

 from Pagbilao to Atimonan, a massive outcrop of lime- 

 stone is exposed near the road and forms a high bluff. 

 Good exposures of sandstones and shales of varying char- 

 acter and in part tufaceous are seen in ascending the 

 zigzag to reach the summit section of the road. In de- 

 scending to the east a massive limestone is found in a 

 ridge striking about 1ST. 30° W. The two limestone out- 

 crops just mentioned are in every way comparable in 

 importance and appearance with the typical massive lime- 

 stone of this cordillera. Other limestones quite similar 

 but not so conspicuous were seen at points about 6 and 

 2 kilometers west of Atimonan. There are additional 

 outcrops of sandstones, conglomerates and shales along 

 the coast at Atimonan, and several occurrences of coal, 

 probably not exploitable, are reported. The structure of 

 the cordillera in this section is that of close folding and 

 faulting. 



Ickis crossed the eastern cordillera from Infanta (Bi- 

 nangonan de Infanta) to Tanay on Bay Lake and con- 

 tributed much to our knowledge of this region, previously 

 geologically unexplored (fig. 5). Leaving Infanta he 

 passed over an area of alluvial deposits. Following up 

 the Agos Biver he crossed a belt of andesites and then a 

 belt of limestones, shales and graywackes in various stages 

 of metamorphism, beginning a short distance above the 

 Macadata Biver and- continuing along his route up the 

 Alas-asin branch. He also reports the occurrence of coal 

 of doubtful economic value found in this belt. The 

 limestone contains, besides other fossils, Orbitoides as 

 determined by Smith. The sedimentaries exhibit steep 

 dips, folding and faulting and the strike is with the 

 cordillera. To the west of this belt Ickis reports ande- 

 sites and basalts probably extending into Jalajala Penin- 

 sula and the basalts and tuff near Tanay. Some lime- 

 stone probably exists to the west of the andesite belt, 

 at Tanay brings down limestone pebbles. 



