RM2AFT3BB–. Geological magazine. the Mediterranean, the ice and snowaccumulated during the Glacial period began to melt, producing animmense quantity of water, which, running down to rejoin the sea,caused a considerable erosion of the plain above mentioned, and ex-cavated the Valley of the Tiber, leaving the alluvial deposits uponthe sides of the Pliocene hills. The direction of the channel wasfacilitated by a fault, the effect of a violent earthquake at the closeof the Pliocene period. (See the annexed Diagram, p. 434). Thus the geological structure of the hills has actually initiated thisprimitive val
RF2BEGMAX–Glacial Melt
RMRGGPK4–. Bulletin of the Geological Society of America. Geology. CLINTON AND MEDINA LEDGES 125 of the plain, and their configuration is in all respects characteristic of glacial erosion. They range in depth from 10 to 30 feet, are usually several hundred feet broad, and the longest probably extends more than a half mile into the plain. The diagram in figure 4 shows the general character of the rock contours, but without representing any individual contour at equal height above the sea. The equivalent topographic out- line is less sinuous, because the rock furrows are largely filled by drift. UWISTON.
RF2BEGMCF–Glacial Melt
RF2BEGMBX–Glacial Melt
RMG15602–An illustration depicting a glacier melting on the left and forming a glacial lake on the right. The arrows indicate the flow of melting ice.
RMG15603–An illustration depicting a glacier melting on the left and forming a glacial lake on the right. The arrows indicate the flow of melting ice.
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