Fig. 6—Raised Beach (a) and Native Middens (b)
Torquay, Victoria.
(Original).
Fig. 7—Marine Fossils (Orthis flabellulum, Sowerby.)
About nat. size. In Volcanic Tuff of Ordovician Age. From the Summit of Snowdon, North Wales, at an elevation of 3571 feet above sea level.
(F.C. Coll.)
Sea-beds far from the Present Coast.—
Marine beds of deeper water origin may be found not only close to the coast-line, but frequently on the tops of inland hills some miles from the sea-coast. Their included sea-shells and other organic remains are often found covered by fine sediment forming extensive beds; and they may frequently occur in the position in which they lived and died ([Fig. 7]). Although it is well known that sea-birds carry shell-fish for some distance inland, yet this would not account for more than a few isolated examples.
Raised Beaches as Distinct from Middens.—