id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
59611	Various	The Journal of Geology, January-February 1893 A Semi-Quarterly Magazine of Geology and Related Sciences			.txt	text/plain	41313	3300	71	between beds of drift is therefore no proof of distinct ice epochs. Such ore beds, buried by the drift of a later ice advance, of drift were deposited by ice sheets which extended great distances evidence of separate ice epochs. ice-epochs, its continuity for great distances between beds of till, can not be brought in evidence against separate ice epochs. ice epochs, for the same reason that weathered zones and forest beds mark the limit of a sheet of drift belonging to a later ice epoch, be reference of the drift of the two areas to distinct ice epochs, if drift sheets would be presumptive evidence of distinct ice epochs. succession, without being evidence of separate ice epochs. the reference of the two beds of till to distinct ice epochs would be later time of drift deposition the glacial drainage in the same region deposits of this ice epoch.	./cache/59611.txt	./txt/59611.txt