Developing landslide chronologies using landslide-dammed lakes in the Oregon Coast Range

Geological Society of America Field Guides -1
By: , and 
Edited by: Adam M. Booth and Anita Grunder



The Oregon Coast Range is a dynamic landscape that is continually shaped by shallow and deep-seated landslides that can have disastrous consequences to infrastructure and human lives. Searching for evidence of potentially coseismic mass wasting is incredibly difficult, particularly when historical observations are limited. Landslide-dammed lakes with submerged “ghost forests” in the Oregon Coast Range present the unique opportunity to establish landslide chronologies with subannual accuracy when dendrochronology is applied. This field guide will visit the unique landslide-dammed Klickitat Lake and explore a drowned ‘ghost forest’ to discuss methods used to establish a prehistoric landslide chronology in western Oregon, USA. After exploring the lake and exposing its geomorphic secrets, the guide will end with a stop on Marys Peak, a mafic volcanic intrusion composed of gabbroic dikes and pillow basalt that forms the highest point in the Oregon Coast Range. With the landscape of western Oregon laid out before us, we will discuss short- and long-term geomorphic evolution of the Oregon Coast Range and Willamette Valley.

Study Area

Publication type Book chapter
Publication Subtype Book Chapter
Title Developing landslide chronologies using landslide-dammed lakes in the Oregon Coast Range
Series title Geological Society of America Field Guides
Chapter 1
DOI 10.1130/2021.0062(01)
Volume 62
Year Published 2022
Language English
Publisher Geological Society of America
Contributing office(s) Geology, Minerals, Energy, and Geophysics Science Center
Description 18 p.
Larger Work Type Book
Larger Work Subtype Monograph
Larger Work Title GSA field guide: From terranes to terrains: Geologic field guides on the construction and destruction of the Pacific Northwest
First page 1
Last page 18
Conference Title GSA Connects 2021
Conference Location Portland, Oregon, United States
Conference Date 2021
Country United States
State Oregon
Other Geospatial Coast Range
Google Analytic Metrics Metrics page
Additional publication details