. Annual report . Fig. 47.—Holy Cross Cathedral, Haileybury, built of Niagara limestone, quarried near the town. Per cent. Insoluble residue Ferric oxide and alumina .66 Lime Magnesia Carbon dioxide Sulphur trioxide 70 108 Bureau of Mines No. 4 This limestone formation extends northward, although overlain by clay and similardeposits in many places, and has been observed by the writer along the south branchof the Blanche river below what is known as the Mountain portage. Considerable attention has been paid to the limestone area, Sir William Loganhaving first descr
. Annual report . Fig. 47.—Holy Cross Cathedral, Haileybury, built of Niagara limestone, quarried near the town. Per cent. Insoluble residue Ferric oxide and alumina .66 Lime Magnesia Carbon dioxide Sulphur trioxide 70 108 Bureau of Mines No. 4 This limestone formation extends northward, although overlain by clay and similardeposits in many places, and has been observed by the writer along the south branchof the Blanche river below what is known as the Mountain portage. Considerable attention has been paid to the limestone area, Sir William Loganhaving first described it years ago. It has been shown that the series here is moreclosely related to the Niagara of Southern Ontario than it is to the Niagara areas tothe north and west. The cobalt-silver deposits being of pre-Cambrian age, the Paleozoic limestone is oflittle interest in connection with the ores. It is of course possible that ore-bearingrocks underlie the Fig. 48.—Contact of quartzite of the Cobalt series witb Niagara limestone, on the east shore of Lake Temiskaming, north of Piche point. The fragments of quartzite are cemented together by limestone. Along the wagon road, in lots 5 and 6 in the third concession of the townshipof Dymond, to the northwest of the town of New Liskeard, the limestone cliff presentsa striking face, indicating faulting. The fault line is continuous with the westernshore of lake Temiskaming, and furnishes still further evidence confirmatory of thetheory that the lake lies along a great northwest-southeast fault. Additional notes on the Silurian, taken from Dr. A. E. Barlows valuable report,are given in appendix I, on a following page.* •Geo. Sur. Can., Vol. X., 1897, p. 123 I. See also Geology of Canada, 1863, p. 134. 1913 Cobalt=l\ickel Arsenides and Silver 100 PLEISTOCENEGlacial and Recent Immediately preceding the Glacial period, doubtless the surface of what is nowthe productive cobalt-silver area was
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