Geological Papers. 165 



will be made later. The scattered fragments of coal in the sand- 

 stone seem to have been formed from driftwood; each fragment of 

 coal so formed seems to have been a fragment of a log or stump 

 isolated from all other coal-producing material. 



About a half-mile up the Sekiu river, and at several places along 

 the coast from the mouth of that river to Neah Bay, a massive 

 sandstone was observed which contains concretions of fine, very 

 hard, bluish-gray sandstone containing fossils; some of the concre- 

 tions also contain pyrites of iron. The concretions resemble Doctor 

 Newcomb's "boulders" of the Oarmanah Point formation on Van- 

 couver Island adjacent;^^ and as the fossils are similar it is likely 

 that the formations are the same. In the sandstone series here, 

 especially in that exposed along the Sekiu, there are occasionally 

 small veins of coal, a sort of "decayed vegetation.'' The veins ex- 

 posed are too small and the coal is too poor in quality to ever pay 

 to handle. 



The cap-rock from the Sekiu to Neah Bay is very coarse, dark- 

 colored sandstone to a very massive gravelly rock, approaching the 

 conglomerate stage. Underneath it is a gray to yellowish finer- 

 grained sandstone, superimposed upon the shale series previously 

 mentioned. 



West of Waatch Strait to Cape Flattery, on the strait side, the 

 formation is thin-bedded to massive, hard, iron-gray to rusty-browTi 

 slate and sandstone, and on the Pacific side it is mostly dark gray 

 slates and thin- bedded sandsone, while in the central area and ap- 

 parently forming the core of the promontory are coarse sandstones 

 and gravelly and coarse conglomerates. The latter seem to be 

 almost wholly made up of volcanic material. Whether the cement- 

 ing material was volcanic also could not be determined. The bulk 

 of the mass was mostly angular blocks, all of volcanic origin. There 

 were volcanic bombs and basalt fragments that were easily recog- 

 nized. The basalt fragments showed beyond doubt that they had 

 been cooled on a land surface. Almost all had vesicular spaces, 

 some of which are now filled with calcium carbonate. As the vol- 

 canic material of this region seems to have all been ejected in 

 Eocene times, it is quite possible that the shales and sandstones to 

 the westward of this conglomerate series will prove to be Eocene 

 in age. 



Note. — The finding of a fossil, Thyasira hisecta Con., on the 

 Pacific front, as has been previously noted in a foot-note, shows 

 that this formation rims the Qaillayute synclinal trough. 



26. Merriam, Univ. Gal.. Bull. Dept. Geol., vol. 2. No. 3, p. 102. 



