Chapter XII—POST-PLIOCENE PERIOD, continued.—GLACIAL CONDITIONS,

concluded.

Glaciation of Scandinavia and Russia. — Glaciation of Scotland. —

Mammoth in Scotch Till. — Marine Shells in Scotch Glacial Drift. —

Their Arctic Character. — Rarity of Organic Remains in Glacial

Deposits. — Contorted Strata in Drift. — Glaciation of Wales, England,

and Ireland. — Marine Shells of Moel Tryfaen. — Erratics near

Chichester. — Glacial Formations of North America. — Many Species of

Testacea and Quadrupeds survived the Glacial Cold. — Connection of the

Predominance of Lakes with Glacial Action. — Action of Ice in

preventing the silting up of Lake-basins. — Absence of Lakes in the

Caucasus. — Equatorial Lakes of Africa.

The Student's Elements of Geology · 第 12 / 47 章