On the Evidences of a Submergence of Western Europe, and of the Mediterranean Coasts, at the Close of the Glacial or So-Called Post-Glacial Period, and Immediately Preceding the Neolithic or Recent Period . R a. Brick-earth or Rubble-drift or head. c. Raised beaches. E. Slates and granite rocks. The arrows represent the direction of the effluent currents as the land emergedfrom beneath the waters, leaving portions of the fine sediment on the plateaux, butsweeping it off the slopes and down the valleys. Jersey.—In this island there are the remains of a low-level Raised beach at FortReg
On the Evidences of a Submergence of Western Europe, and of the Mediterranean Coasts, at the Close of the Glacial or So-Called Post-Glacial Period, and Immediately Preceding the Neolithic or Recent Period . R a. Brick-earth or Rubble-drift or head. c. Raised beaches. E. Slates and granite rocks. The arrows represent the direction of the effluent currents as the land emergedfrom beneath the waters, leaving portions of the fine sediment on the plateaux, butsweeping it off the slopes and down the valleys. Jersey.—In this island there are the remains of a low-level Raised beach at FortRegent, St. Clements, La Motte, Mont Orgueil, Anns Port, St. Catherines Bay,Rozel Bay, and Boulay Bay.# They are covered as in Guernsey by a rubble-drift or Head, and are about 5 to 15 feet above the They are well seenat Anns Port and St. Catherines Bay; the section at the former place is as under. Fig. 8.—Section of the Raised Beach and Head on the north side of Port Ann Bay. i/rfl/l\\\ I /,. a. Head, largely composed of loam roughly bedded, with, fragments, and a few angular blocks, of the rocks from the hills above, 12 Raised beach, chiefly of diorite pebbles, 2 feet. R, Diorite rock. In none of these beaches have there been found any pebbles of foreign origin, withthe exception of fragments of chalk flints, as in the beaches on the Devon andCornish coasts ; nor did I see any shells, nor have any been recorded, except by W. Danby, who discovered in a Raised Beach on the Hermitage Rock, St. AubynsBay, an abundance of shells of species now flourishing on the adjacent shore. TheBeach, which was about 6 feet above high water mark, has since been concealed by theharbour In Jersey, as in Guernsey, brick-earth or Loess is widely spread * Professor Notjry mentions besides, Portelet Bay, Crabbe, Petit Port (Vicard) : he assigns a differentorigin to the beaches, Geologie de Jersey, p. 162, 1886. f Dr. Dunlop informs me that there are some beaches con
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