Possibilities for geologic events that may have created Sithylemenkat Lake
Primary means of identifying: shocked quartz; shatter cone. To date, none found.
Primary means of identifying: similar lakes in other northward facing valleys. Absent; ruled out by looking at air photos.
Is there a fault? Yes! This becomes the probable cause of the lake. Identified by looking at air photos.
Is there rubble in the "pass" area, closing off the lake? No; this precludes landslide. See field notes for April 22-23, Note D.
Is there rubble in the "pass" area, closing off the lake? No; this precludes landslide. See field notes for April 22-23, Note D.
No evidence.
No evidence. There is some volcanic material in Fault Bluff, but the SE edge of the lake is plutonic.
Are there other causes? Must think on it.
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Written Spring 1999