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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: http://eos.tufts.edu/varves
Description: The North American Glacial Varve Project
Picture:
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
Picture:
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.
Picture:
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.
Location:
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:
Image
![nagvp](/sites/default/files/styles/large/public/2022-12/title_0.jpg?itok=885jQBjH)
Author of Picture 1: http://eos.tufts.edu/varves
Description: The North American Glacial Varve Project
Picture:
Image
![deglac 3](/sites/default/files/styles/large/public/2022-12/geol_deglac3.jpg?itok=zxIR4ExI)
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
Picture:
Image
![varve-chron-1](/sites/default/files/styles/large/public/2022-12/varve_chron1.jpg?itok=jKnWlwOi)
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.
Picture:
Image
![bw comp](/sites/default/files/styles/large/public/2022-12/comp_grayscale_starr.jpg?itok=a8KW02p1)
Location: