﻿REPORT OF THE DIRECTOR I9IO 1 27 



sils and the deposition of secondary calcite. There is no breccia 

 formed as the sediments were not sufficiently hardened at the 

 time of the outpours to produce a breakage of this character. 



Back on the heavily wooded mountain there are no traces of 

 any other rock than the eruptive and the only clues that I have 

 obtained as to the inward extension of these almost ruined 

 masses of Devonic rocks are located along the road southward 

 to Eel river, which runs with some deviation parallel to the coast 

 but at a distance of three-fourths to one mile back. The rock 

 cuts along this road complete without simplifying the relations 

 of the sedimentaries and eruptives. 



Sediments and eruptives in the Eel river road section. On 

 consulting the adjoining sketch map there will be seen an east 

 and west crossroad reaching from the shore to the Eel river road 

 and passing along the main eruptive mass. Turning south on the 

 Eel river road the remaining width of the volcanic is soon passed 

 and the road cuts a series of red sandstones, followed by dark 

 reddish shale and yellow decomposed limestone. The shale has 

 produced a peculiar fishplate which competent authority has 

 thought may be Pteraspis or an ally, and the decomposed limestone is 

 profuse in Ostracodes, of which there is abundance in similar 

 position on the shore section. The shore, however, has produced 

 no red sandstone, no reddish shale and no fish remains. The out- 

 crop of the sedimentaries is here not more than 50 feet in entire 

 length ; then follows the eruptive which is not interrupted until 

 the road crosses the bridge over Stewart's brook and in a west 

 curve takes the next rise. In a position which corresponds to the 

 lower or south section on the shore there is shown in this road a 

 slight extent of similar Devonic shale. From this point on, all 

 correspondence in the shore and road section is lost, for on the 

 shore the sediments have ended. One continues on the highway, 

 however, over the hill, crossing the second bridge beyond the 

 house of James Stewart and here begins the section which is seen 

 in diagram on the following plate. Here the outcrop face is 202 

 feet long ; its sediments are all normally and steeply inclined to the 

 north as on the shore and are crossed by five distinct beds of con- 

 temporaneous lavas, tuffs and ashes. The contacts of the sedi- 

 mentaries with these thin ejections are absolutely unaltered; indeed 

 here, as on the shore section, there are ash beds in which the fossils 

 lie unaffected. Evidently the thin volcanic masses carried too 

 little heat to effect any change in the sediments lying in cool 



