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File:Blackhawk-Mancos.jpg

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Summary

Description
English: Schematic showing the relationship of the Blackhawk Formation to the Mancos Shale. The regression of the Cretaceous Seaway (represented by the Mancos Shale) was irregular, with several minor transgressions of the sea over coastal lands. This created thin wedges of coastal deposits that have been named as members (abbreviated as Mbr,). These members containing economically important coal seams, such as the Sunnyside Coal in the Sunnyside Member. Adapted from Chan et al. 1991.
Date
Source Own work
Author Carpenter, Kenneth

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Captions

Schematic showing the relationship of the Blackhawk Formation to the Mancos Shale.

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31 March 2021

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Date/TimeThumbnailDimensionsUserComment
current14:36, 31 March 2021Thumbnail for version as of 14:36, 31 March 20211,601 × 329 (231 KB)Carpenter, KennethUploaded own work with UploadWizard

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