Big Draw, an abandoned outlet (Tertiary) of Flathead basin. Flathead County, Montana. 1930.
Dates
Date Taken
1930
Summary
Big Draw, an abandoned outlet (Tertiary?) of Flathead basin now blocked by a terminal moraine (not in photo) west of the Big Arm of Flathead Lake. A filling of outwash gravel extends westward from the moraine to the valley of Sullivan Creek (foreground) where there is a whitish silt deposit of glacial Lake Missoula. Lake shore lines are well marked on the grassy hill slopes for hundreds of feet above the bottom land. View east from the hill north of Niarada. Flathead County, Montana. August 26, 1930. Figure 23, in U.S.Geological Survey Professional paper 231. 1953.
Summary
Big Draw, an abandoned outlet (Tertiary?) of Flathead basin now blocked by a terminal moraine (not in photo) west of the Big Arm of Flathead Lake. A filling of outwash gravel extends westward from the moraine to the valley of Sullivan Creek (foreground) where there is a whitish silt deposit of glacial Lake Missoula. Lake shore lines are well marked on the grassy hill slopes for hundreds of feet above the bottom land. View east from the hill north of Niarada. Flathead County, Montana. August 26, 1930. Figure 23, in U.S.Geological Survey Professional paper 231. 1953.
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