Home Archived Aug 4, 2016
(i)

USGS Geology in the Parks

http://coastal.er.usgs.gov/response/wa-or/locations/98.html
Seastack, Central California
Sea stack along Oregon's northwest coast. Image from USGS Center for Coastal Geology.

Sea Stack

Sea stacks are blocks of erosion-resistant rock isolated from the land by sea. Sea stacks begin as part of a headland or sea cliff. Relentless pounding by waves erodes the softer, weaker parts of a rock first, leaving harder, more resistant rock behind.

Click here to see Jump-off Joe, a sea stack, erode over 100 years.

Return to Where Parks Meet the Sea index

 

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://geomaps.wr.usgs.gov/parks/sea/gseastack.html
Page Contact Information: Webmaster
Page Last Modified: 03-Oct-2014@11:13