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Ice and water on Newberry Volcano, central Oregon

By:  and 
Edited by: Jim O'ConnorIan P. Madin, and Rebecca Dorsey

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Abstract

Newberry Volcano in central Oregon is dry over much of its vast area, except for the lakes in the caldera and the single creek that drains them. Despite the lack of obvious glacial striations and well-formed glacial moraines, evidence indicates that Newberry was glaciated. Meter-sized foreign blocks, commonly with smoothed shapes, are found on cinder cones as far as 7 km from the caldera rim. These cones also show evidence of shaping by flowing ice. In addition, multiple dry channels likely cut by glacial meltwater are common features of the eastern and western flanks of the volcano. On the older eastern flank of the volcano, a complex depositional and erosional history is recorded by lava flows, some of which flowed down channels, and interbedded sediments of probable glacial origin. Postglacial lava flows have subsequently filled some of the channels cut into the sediments. The evidence suggests that Newberry Volcano has been subjected to multiple glaciations.

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Additional publication details

Publication type Book chapter
Publication Subtype Book Chapter
Title Ice and water on Newberry Volcano, central Oregon
Series number 15
Subseries Field Guide
ISBN 9780813700151 0813700159
Volume 15
Year Published 2009
Language English
Publisher Geological Society of America
Publisher location Boulder, Colorado
Description 10 p.
Larger Work Type Book
Larger Work Subtype Monograph
Larger Work Title Volcanoes to vineyards: geologic field trips through the dynamic landscape of the Pacific Northwest
First page 81
Last page 90
Country United States
State Oregon
Other Geospatial Newberry Volcano
Online Only (Y/N) N
Additional Online Files (Y/N) N