. Annual report of the Regents. GEOLOGY OF THE LAKE PLACID REGION 63 map, opposite p. 62, the eastern front of Whiteface for example,tie will be impressed with the amphitheaters, setting backagainst precipitous walls, that are everywhere present. Thesame is true of Sentinel mountain about the headwaters of Clif-ford brook. Ice appears to have stood in these recesses and tohave worked the sides back to the coimparatively steep wallswhich confront us to-day. The open space or bergschrund \ thatusually intervenes as a huge crack between the ice of a glacierand its inclosing w^all, is a place of s
. Annual report of the Regents. GEOLOGY OF THE LAKE PLACID REGION 63 map, opposite p. 62, the eastern front of Whiteface for example,tie will be impressed with the amphitheaters, setting backagainst precipitous walls, that are everywhere present. Thesame is true of Sentinel mountain about the headwaters of Clif-ford brook. Ice appears to have stood in these recesses and tohave worked the sides back to the coimparatively steep wallswhich confront us to-day. The open space or bergschrund \ thatusually intervenes as a huge crack between the ice of a glacierand its inclosing w^all, is a place of specially active disintegrationof rock. The thaw by day is succeeded by freezing during thenight and the walls scale off to a fairly vertical condition with ex-ceptional rapidity. [An amphitheater with steep walls results,which is a favorite form for the Adirondacks, being well shown onGiant, on the Gothics and not a few other peaks. The melting of the ice sheet and its retreat, the temporaryblocking of lines of drainage and per
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Keywords: ., bookauthorne, bookcentury1800, bookdecade1880, booksubjectscience
