Annual report . imilar rocks in other parts of southeastern Ontario alreadydescribed. The rocks which yielded pebbles of quartz-porphyry and feldspar-porphyry havenot been observed in the Gilmour area, but they are present in the Actinolite-CloyneaTea. Relation of post-Hastings Intrusives to Keewatin, Grenville and Hastings.—Thegranite and gabbro intrude the Hastings, Grenville and Keewatin rocks, and are there-fore younger than these three series. The granite may be observed to intrude the con-glomerate, the crystalline limestone, the garnet-epidote rock and the rusty schist. Thegabbro intrud
Annual report . imilar rocks in other parts of southeastern Ontario alreadydescribed. The rocks which yielded pebbles of quartz-porphyry and feldspar-porphyry havenot been observed in the Gilmour area, but they are present in the Actinolite-CloyneaTea. Relation of post-Hastings Intrusives to Keewatin, Grenville and Hastings.—Thegranite and gabbro intrude the Hastings, Grenville and Keewatin rocks, and are there-fore younger than these three series. The granite may be observed to intrude the con-glomerate, the crystalline limestone, the garnet-epidote rock and the rusty schist. Thegabbro intrudes the conglomerate, the crystalline limestone and the rusty schist. Ital3o invades the greenstone schist; this intrusion may be seen at the southwest cornerof the map, on the south side of the road. The relation of the gabbro to the granite is not always clear. About a quarter ofa mile east of mile-post 92. however, a few granite dikes intrude the gabbro, showingthat the latter rock is older than the
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectminesandmineralresou
