Geologic History

General Information

Lake Bonneville: A Brief History
Flash-animated Lake Bonneville through time.

What is an unconformity?
from Survey Notes, January 2018

How can sedimentary rocks tell you about Utah’s history?
from Survey Notes, January 2014

Utah’s Sevier Thrust System
from Survey Notes, January 2000

Site-Specific Information

Update on the Markagunt gravity slide: Utah’s largest landslide just got bigger – a lot bigger
from Survey Notes, January 2016

The Early Miocene Markagunt Megabreccia: Utah’s Largest Catastrophic Landslide
from Survey Notes, May 2013

Ancient Landslides of the Beaver Dam Mountains, Washington County, Utah
from Survey Notes, May 2009

Ancient Exhumed River Channels of the Morrison and Cedar Mountain Formations
from Survey Notes, September 2008