Man and the Glacial PeriodWright, G. Frederick (George Frederick)
History
Man and the Glacial Period
Wright, G. Frederick (George Frederick)
Glacial epoch; Prehistoric peoples
Terracing of river Including a stage of Erosion and terracing
valleys. Northward rise considerable uplift, of stratified drift in
of area of Lake Agassiz with return of humid river valleys. Land
nearly complete before conditions, Alpine passage of European
the ice was melted on glaciation (third flora to Greenland;
the country crossed by Glacial epoch), and succeeded by subsidence
Nelson River; but rise the second great rise there, admitting warm
about Hudson Bay is still of Lakes Bonneville currents to Arctic Sea.
going on; 7,000 to 8,000 and Lahontan. Very Minor climatic changes,
years since ice-melting recent subsidence including a warmer
uncovered Niagara and and change to present stage than now. Upper
falls of St. Anthony. aridity. and outer portions of
Indo-Gangetic alluvial
plain; extensive
deposits of Hwang Ho,
and destructive changes
of its course.
Abundant deposition of Depression probably Final departure of the
englacial drift. Stone almost to the present ice-sheets; glacial
implements in river level. Restoration of rivers forming eskers
gravels of Ohio, Ind., arid climate; nearly or and kames. Loess
and Minn. Laurentian quite complete deposited while the
lakes held at higher evaporation of Lakes region of the Alps was
levels, and Lake Bonneville and Lahontan.depressed lower than
Agassiz formed in Red Formation of the "adobe"now. Upper (englacial)
River basin, by continuing through the till, and asar, of
barrier of retreating second Glacial, Sweden. Marine
ice, with outlets over Champlain, and Recent submergence 500 to 600
lowest points of their epochs. feet in Scotland,
present southern Scandinavia, and
water-shed. Marine Spitzbergen.
submergence 300 to 500
feet on southwest
side of Hudson Bay.
Public-domain text, read in full here on John Shaqi.
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