May 3, 2008 Willapa Hills-Mima Mounds field trip
On this trip we will examine the
effects of the December 2007 flood along the
STOP 1: FLOOD DAMAGE ALONG
STOP 2: QUARRY EXPOSURE OF
STOP 3. EXPOSURE
STOP 4. COLUMBIA RIVER BASALT ALONG ELK CREEK ROAD (Drive by no stop).
STOP 5. LANDSLIDE IN LINCOLN CREEK FORMATION SANDSTONES ALONG SR6 WEST OF PE ELL.
STOP 6. FLOOD DAMAGE AND
DEPOSITS OF SEDIMENT, LOGS, AND DEBRIS ALONG THE
STOP 7A. LANDSLIDE
OF SEDIMENTARY ROCKS AND COLUMBIA RIVER BASALTS ALONG NORTH VALLEY WALL OF
STOP 7B. DEPOSITS OF GLACIALLY-DERIVED SANDS AT ABOVE SITE.
STOP 8. MIMA MOUNDS NATURAL RESOURCE CONSERVATION AREA.
Washburn, A. L., 1988, Mima mounds--An evaluation of proposed origins with special reference to the Puget Lowlands: Washington Division of Geology and Earth Resources Report of Investigations 29, 53 p.