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Updated: May 27, 2025
The rock has probably been derived by dynamic metamorphism, from a coarse igneous rock like a gabbro. 7 Epidotic Sericitic Schist. Washkagama Lake. A fine grained compact gray rock, of aggregate structure, consisting chiefly of quartz, plagioclase and biotite, and the alteration products epidote and sericite.
From Nipishish to Washkagama we had passed through a burned and rocky country where no new growth save scant underbrush and a few scattering spruce, balsam and tamarack trees had taken the place of the old destroyed forest.
Its course was in a northerly direction through the valley of a small river that emptied into the lake. This valley was inclosed by low hills, and the country, like that between Washkagama and Lake Minisinaqua, was well covered with the same varieties of small trees that were found there.
But this unregenerated district ended at Washkagama; and below it Nipishish, with its green-topped hills, seemed almost homelike.
To the north lay a great rolling country covered with a limitless forest of firs, with here and there a bit of sparkling water. A mile from our camp a creek, now and again losing itself in the green woods, rushed down to join Washkagama, anxious to gain the repose of the lake.
The one exception is on Caribou Ridge, which is capped by a much altered gabbro. The first noticeable change in the character of the country rock is a Washkagama Lake, where a fine grained epidotic schist was observed, having a dip 82 degrees W. and a strike S. 78 degrees E. At Otter Lake a much foliated and weathered phyllite was found. Strike N. 73 degrees E. and a dip of 16 degrees.
First portage opposite Red River S. 45 degrees E. On Caribou Ridge E. At Washkagama Lake S. 70 degrees E. Near Seal Lake N. 85 degrees E. At Wuchusk Nipi S. 75 degrees E. Thirty-two miles above Wuchusk Nipi S. 70 degrees E. By G. M. Richards, Columbia University 1 Pegmatite-Grand Lake. The specimen was taken from a pegmatite dike at its contact with an amphibolite.
A stream flowed into Washkagama near the place where we went ashore, and it seemed to me probable that our route might be along this stream, which it was likely drained lakes farther up; but a search in the vicinity failed to uncover any signs of the trail, and the irregu- lar shape of the lake suggested several other likely places for it.
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