CGRG Bibliography of Canadian Geomorphology
Search Results
Author : Dionne, J.C.
Date : 2000.
Title : Additional data on the Holocene relative sea-level fluctuations at Anse de Bellechasse, south shore of the middle St. Lawrence estuary.
Publication : Geographie physique et Quaternaire
Issue : 54(1):
Page(s) : 119-122.
Abstract
Additional data on the Holocene relative sea-level fluctuations at Anse de Bellechasse, south shore of the middle St. Lawrence estuary. During spring 1998, three small landslides exposed the deposits forming the 10 m terrace at the outlet of the Bellechasse Creek. An organic layer 30-35 cm thick and many tree logs were observed in vertical exposures. This unit is interlayered between an underlying thick marine clay deposit (rythmithes dated about 10 ka), and an overlying fine grained intertidal deposit about 2-3 m thick. The peat layer and logs released C-14 dates (6 to 7 ka) similar to those of the Montmagny and Cap-Saint-Ignace exposures, indicating that the geological events (low stand followed by a transgression) reported at these two localities, respectively at 15 and 25 km downstream, have a wider geographic extension on the south shore of the St. Lawrence estuary than previously known.
Bibliography of Canadian Geomorphology