| Title | Ice and water on Newberry Volcano, central Oregon |
| Author | Donnelly-Nolan, J.M.; Jensen, R.A. |
| Author Affil | Donnelly-Nolan, J.M., U. S. Geological Survey, Menlo Park, CA. Other: University of Oregon; Oregon Department of Geology and Mineral Industries; U. S. Forest Service |
| Source | Volcanoes to vineyards; geologic field trips through the dynamic landscape of the Pacific Northwest, edited by J.E. O'Connor, R.J. Dorsey and I.P. Madin. GSA Field Guide, Vol.15, p.81-90, . Publisher: Geological Society of America, Boulder, CO, United States |
| Publication Date | Dec. 2009 |
| Notes | In English. 18 refs. GeoRef Acc. No: 300139 |
| Index Terms | channels (waterways); erosion; geomorphology; glacial erosion; glaciation; glaciers; meltwater; volcanoes; United States- -Oregon--Cascade Range; United States--Oregon- -Newberry Volcano; calderas; Cascade Range; channels; cinder cones; Deschutes County Oregon; glacial features; glaciated terrains; lava flows; Newberry Volcano; Oregon; United States; volcanic features |
| 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. |
| URL | http://hdl.handle.net/10.1130/2009.fld015(04) |
| Publication Type | journal article |
| Record ID | 64004781 |