USGS/Cascades Volcano Observatory, Vancouver, Washington
REPORT:
Geology of Portland, Oregon, and Adjacent Areas
--
Trimble, D.E., 1963,
Geology of Portland, Oregon and Adjacent Areas:
U.S. Geological Survey Bulletin 1119, 119p.
Table of Contents
-
Abstract
- Introduction
- Location and extent of area
- Purpose and scope of work
- Previous work
- Fieldwork and acknowldegments
- Geography
- Sedimentary and volcanic rocks
- General features
- Tertiary system
- Eocene to Miocene (?)
- Oligocene and Miocene series
- Miocene series
- Columbia River basalt
- Rhododendron formation
- Pliocene series
- Sandy River mudstone
- Troutdale formation
- Tertiary and Quaternary systems
- Quaternary system
- Pleistocene series
- Springwater formation
- Loess
- Gresham formation
- Estacada formation
- Lacustrine deposits
- Upper(?) Pleistocene sand and silt deposits
- Recent series
- Recent(?) terrace deposits
- Landslide deposits
- Bob deposits
- Recent alluvium
- Tertiary intrusive rocks
- Structural geology
- Landslides
- Weathering
- Quaternary profiles of weathering
- Laterization
- Laterite profile on Columbia River basalt
- Laterite profile on the Rhododendron formation
- Genesis of laterite
- Time of formation of latrite
- Conclusions on laterite origin
-
Geologic History
- Drainage changes of the Willamette River and the Tualatin River
- Economic resources
- Metals
- Aluminum
- Copper
- Iron
- Mercury
- Nonmetals
- Brick clay
- Sand and gravel
- Stone
- Lightweight aggregate
- Molding sand
- Volcanic ash
- Oil and gas
- Groundwater
- Relation of geology to engineering construction problems
- References cited
- Index
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05/01/07, Lyn Topinka