USGS/Cascades Volcano Observatory, Vancouver, Washington
REPORT:
Geologic History of Mount Hood Volcano, Oregon --
A Field-Trip Guidebook
--
Scott, W.E.,
Gardner, C.A.,
Sherrod, D.R.,
Tilling, R.I.,
Lanphere, M.A.,
and Conrey, R.M., 1997,
Geologic History of Mount Hood Volcano, Oregon -- A Field-Trip Guidebook:
U.S. Geological Survey Open-File Report 97-263, 38p.
Table of Contents
- Beginning
- Overview of Mount Hood Volcano
- Rock and Deposit Terminology
- Record before 0.5 Ma
- 500 to 200 Ka
- 200 to 50 Ka
- Since 50 Ka
-
Historical Record
- Field Guide
-
Stop 1: Panorama Point overlook of Cascade Range, Mount Hood,
and Hood River Valley
- Stop 2: Hood River lahar
- Stop 3: Lahar deposits of Polallie eruptive period
- Stop 4: Basaltic andesite of Cloud Cap and discussion of
Quaternary mafic lavas near Mount Hood
- Stop 5: Bennett Pass glacial deposits
- Stop 6: Pyroclastic-flow deposit of Old Maid eruptive period
along White River
- Stop 7: Mount Hood andesite lava flow along U.S. Highway 26
- Stop 8: Overlook of the upper south flank of Mount Hood
- Stop 9: Pyroclastic-flow and lahar deposits of Timberline
eruptive period along Little Zigzag River
- Stop 10: Upper Sandy overlook
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07/28/00, Lyn Topinka