File:Cinder cone volcanoes (late Pleistocene & Holocene; Crescent Butte & Half Cone & Broken Top & Big Cinder Butte, Craters of the Moon Lava Field, Snake River Plain, Idaho, USA).jpg

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English: Cinder cones in the Quaternary of Idaho, USA.

Seen here are several dormant cinder cone volcanoes in Idaho's Craters of the Moon Lava Field. Cinder cones are relatively small, steep-sided cones of loose igneous debris. They have few eruptions and a relatively large summit crater. Cinder cones are principally composed of scoria and vesicular basalt.

In the distance at left is Crescent Butte, which was active in the late Pleistocene. It erupted basaltic lava having pahoehoe flow tops. The volcano itself is composed of a mix of lava flows, volcanic ash, lapilli, spatter, and ~fresh to oxidized cinders.

The tallest peak at right is Big Cinder Butte, which has an estimated volume of 0.2 cubic kilometers. It was active in the Holocene and also consists of a mix of basaltic lava flows and various-sized mafic tephra.

The wide, moderately low hill at ~center is Broken Top. It erupted pahoehoe basalt lava flows in the Holocene. The volcano itself is composed of ash and lapilli deposits.

The small hill between Crescent Butte and the left edge of Broken Top (click on the photo 1 or 2 times to zoom in) is Half Cone.

Locality: Crescent Butte & Half Cone & Broken Top & Big Cinder Butte (view from the summit of Inferno Cone), Craters of the Moon National Monument, Snake River Plain, southern Idaho, USA

Site-specific info. from:

Kuntz et al. (2007) - Geologic map of the Craters of the Moon 30' x 60' quadrangle, Idaho. United States Geological Survey Scientific Investigations Map 2969. 1 map. 64 pp. pamphlet.
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Source https://www.flickr.com/photos/47445767@N05/49441630236/
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@N05/49441630236 (archive). It was reviewed on 27 January 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

27 January 2020

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