. Annual report. New York State Museum; Science; Science. REPORT OF THE STATE PALEONTOLOGIST I9O3 149 the Blowhole, a sea cavern gnawed out by the ^\?aves. the tinted Perce strata again appear, but here lying at a steep angle, 20° to 40° to the southeast and abutting palpably against the thrust plane of a fault which is well marked in the face of the cliff, sloping obliquely downward and to the north. The line of displacement is well en- forced by the contrast in color between the downthrown yellow and red strata and the more somber grays of the Cap Barre massive. Logan noted the fact that the
. Annual report. New York State Museum; Science; Science. REPORT OF THE STATE PALEONTOLOGIST I9O3 149 the Blowhole, a sea cavern gnawed out by the ^\?aves. the tinted Perce strata again appear, but here lying at a steep angle, 20° to 40° to the southeast and abutting palpably against the thrust plane of a fault which is well marked in the face of the cliff, sloping obliquely downward and to the north. The line of displacement is well en- forced by the contrast in color between the downthrown yellow and red strata and the more somber grays of the Cap Barre massive. Logan noted the fact that these downthrown strata were of equivalent age and probably a part of the Perce rock, and Ells cites the occur-. Section at Blowhole. Cap Barre beds at left, downthrown Perc^ beds at right rence in the rocks at the Blowhole of the fossils Spirifer are- no s u s and S. cyclopterus (probably S . m u r c h i - s o n i ) ; we have also found Dalmanites perceensis Phacops logani Acidaspis sp. Megalanteris plicata Chonetes canadensis Leptocoelia flabellites Leptostrophia irene Chonetes hudsonicus Spirifer arenosus S. murchisoni and a few others, but the specimens are not very well preserved nor are they in any wise so abundant as at Perce rock. These Perce beds about the Blowhole are probably again down- thrown in themselves in their further extension along the Murailles but without essential change of dip, for this same southward dip is well expressed in the angle of the landward slope of the cliff and is apparent as far as Le Coule on Barre brook where Perce fossils were also found. The latter seem to be the summit beds of the limestones and from them the following species were obtained. Spirifer arenosus S. murchisoni Chonetes canadensis C. hudsonicus Megalanteris plicata Leptostrophia irene Coelospira. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not
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