File:Conglomerate (Amargosa Valley Formation, Tertiary; Funeral Mountains, California, USA) 2.jpg

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English: Conglomerate from the Tertiary of California, USA.

Conglomeate is a poorly sorted siliciclastic sedimentary rock with rounded clasts. This sample's clasts vary in lithology and shape (angular to subangular to subrounded). I'm not sure what the cutoff is between conglomerate and breccia, in terms of angular versus rounded clast content. [The British Geological Survey suggests that "breccia" be used for a rock having sharply angular clasts - that definition does not apply to this sample.] The original sediments were deposited in an ancient fluvial (river) setting.

Stratigraphy: Amargosa Valley Formation, Upper Oligocene to Lower Miocene, ~20-25 Ma

Locality: clast in modern fanglomerate, proximal part of an alluvial fan due south of Bat Mountain, southern Funeral Mountains, southeastern Inyo County, southeastern California, USA
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Source https://www.flickr.com/photos/47445767@N05/51188135252/
Author James St. John

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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/51188135252. It was reviewed on 20 May 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

20 May 2021

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current16:49, 20 May 2021Thumbnail for version as of 16:49, 20 May 20213,629 × 2,285 (5.72 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51188135252/ with UploadWizard

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