GENERAL GEOLOGY

Detailed explanation-1: -The theory, developed in the late 1830s and 1840s by Venetz, de Charpentier, and Agassiz, that most of Northern Europe, N.

Detailed explanation-2: -The theory of glacial ages states that at times in the past, colder climates prevailed during which much more of the land surface of the earth was glaciated than at present. Alpine glaciation is found in mountainous regions, while continental glaciation exists where large part of a continent is covered by glacial ice.

Detailed explanation-3: -Glacial troughs and fjords are deep erosional features calved into bedrock marking glacial activity [1, 2]. The most characteristic difference between a trough and a fjord, is that a fjord ends in a coastal region, and is flooded by sea water [3].

Detailed explanation-4: -Cirque [French, Cirque; German, Kar; Norwegian, Botn; Welsh, Cwm; Scottish, Corrie; Spanish, Hoyo and Circo ] as a term in geomorphology was introduced by Charpentier (Brothers), Jean pr Vol. VIII Charpentier (1823) for basins of semicircular form found in the Pyrenees.