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Keesville varves

Country: USA
Region: New York
Varve Category: clastic varves
Archive Type: lacustrine sediments
Lake Type: glacial
Elevation: 131.0
DOI / Reference Link: Access Link
Reference: Ridge, J.C. (March 22, 2015) The North American Glacial Varve Project
Picture 1:

Author of Picture 1:
Description: The North American Glacial Varve Project
deglac 3

Description: Basal varves overlying till at Keesville, NY in the Champlain Valley. The bottom three varves resting on till (arrows mark winter layers, right-most core) are very thick and sandy as compared to the sequence immediately above that shows a thinning of annual layers. Varves get progressively younger (right to left) in this sequence of over-lapping cores. Dots show equivalent layers on adjacent cores.
Picture Type: macroscopic

Description: To construct a varve record in glacial lacustrine sediment the thicknesses of annual layers are counted and measured to formulate a time scale of varve years and corresponding varve thickness. The block of sediment shown here is from the deposits of Lake Vermont, a late Pleistocene glacial lake that occupied the Champlain Valley of New York.
bw comp

Description: Left: High resolution color (RGB) image of dried varve core with image sampling profile line that is 20 pixels wide. (W = winter layers). Right: Gray scale version (total RGB values) of high resolution image.