CGRG Bibliography of Canadian Geomorphology
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Author : Bik, M.J.J.
Date : 1968
Title : Morphoclimatic observations on Prairie mounds
Publication : Zeitschrift fur Geomorphologie
Issue : 12(4):
Page(s) : 409-469
Abstract
By detailed sedimentary analysis of two prairie mounds in the Foremost-Cypress Hills till area, southern Alberta, their depressed and rim-breached features appear modified by morphogenetic events of the last 10,000 years. 'Bedded niveo-aeolian deposits are assigned to the Earlier Dryas Period,' apparently periglacial, and cessation of this deposition in the central fill identifies the semi-arid Allerod Period. Upper niveo-aeolian deposits, placed in the Younger Dryas Period, post-date the Allerod. Slope stability and soil formation followed the second periglacial phase and ended with a thin cover of Mazama? volcanic ash; slope instability, under conditions more arid than now, produced thick colluvium, Xerothermal (or Altithermal) by analogy with deposits in Waterton Park. The characteristic stoney cover may also be Xerothermal.
Bibliography of Canadian Geomorphology