File:Green Mountain Laccolith (Little Sundance Dome) (Sundance, Wyoming, USA) 5.jpg

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English: Green Mountain - an igneous laccolith in the Eocene of Wyoming, USA.

Several igneous intrusions occur in the vicinity of the town of Sundance in northeastern Wyoming. The intrusion seen here is Green Mountain. Igneous rocks are not exposed at the surface here - the forested hill consists of Minnelusa Formation sedimentary rocks (Pennsylvanian-Permian in age). Those rocks have been altered by heating as a result of the intrusion of an underlying, Eocene-aged igneous laccolith. Laccoliths are lens-shaped igneous intrusions. The Green Mountain intrusion is circular in map view.

Locality: Green Mountain (also known as Little Sundance Dome), 2 to 3 miles east of town of Sundance, southeast-central Crook County, northeastern Wyoming, USA
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Source https://www.flickr.com/photos/47445767@N05/53172452261/
Author James St. John
Camera location44° 24′ 16.66″ N, 104° 21′ 32.6″ W  Heading=83.573333740234° Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/53172452261. It was reviewed on 11 September 2023 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

11 September 2023

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current07:41, 11 September 2023Thumbnail for version as of 07:41, 11 September 20233,922 × 2,155 (4.22 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/53172452261/ with UploadWizard

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