Field-trip guide to the vents, dikes, stratigraphy, and structure of the Columbia River Basalt Group, eastern Oregon and southeastern Washington
Links
- Document: Report (13 MB pdf)
- Larger Work: This publication is Chapter N of Field-trip guides to selected volcanoes and volcanic landscapes of the western United States
- Download citation as: RIS | Dublin Core
Abstract
The Columbia River Basalt Group covers an area of more than 210,000 km2 with an estimated volume of 210,000 km3. As the youngest continental flood-basalt province on Earth (16.7–5.5 Ma), it is well preserved, with a coherent and detailed stratigraphy exposed in the deep canyonlands of eastern Oregon and southeastern Washington. The Columbia River flood-basalt province is often cited as a model for the study of similar provinces worldwide.
This field-trip guide explores the main source region of the Columbia River Basalt Group and is written for trip participants attending the 2017 International Association of Volcanology and Chemistry of the Earth’s Interior (IAVCEI) Scientific Assembly in Portland, Oregon, USA. The first part of the guide provides an overview of the geologic features common in the Columbia River flood-basalt province and the stratigraphic terminology used in the Columbia River Basalt Group. The accompanying road log examines the stratigraphic evolution, eruption history, and structure of the province through a field examination of the lavas, dikes, and pyroclastic rocks of the Columbia River Basalt Group.
Suggested Citation
Camp, V.E., Reidel, S.P., Ross, M.E., Brown, R.J., and Self, S., 2017, Field-trip guide to the vents, dikes, stratigraphy, and structure of the Columbia River Basalt Group, eastern Oregon and southeastern Washington: U.S. Geological Survey Scientific Investigations Report 2017–5022–N, 88 p., https://doi.org/10.3133/sir20175022N.
ISSN: 2328-0328 (online)
Study Area
Table of Contents
- Preface
- Contributing Authors
- Introduction
- Physiography and Regional Setting
- Stratigraphy of the Columbia River Basalt Group
- Feeder Dikes
- Physical Volcanology
- Deformation and Crustal Stress During and After the CRBG Eruptions
- Petrogenesis
- Road Log
- References Cited
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Field-trip guide to the vents, dikes, stratigraphy, and structure of the Columbia River Basalt Group, eastern Oregon and southeastern Washington |
| Series title | Scientific Investigations Report |
| Series number | 2017-5022 |
| Chapter | N |
| DOI | 10.3133/sir20175022N |
| Year Published | 2017 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Volcano Science Center |
| Description | Report: x, 88 p. |
| First page | 1 |
| Last page | 88 |
| Country | United States |
| State | Oregon, Washington |
| Online Only (Y/N) | Y |
| Google Analytic Metrics | Metrics page |