About: http://webisa.webdatacommons.org/347567722

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	...thousand years is a figure which falls within the estimates made by...limestone' and Helderberg group'; the rocks contain a great...Coast Ranges, including the Klamath Miountains of California and...rise to the sur-face.
http://www.w3.org/ns/prov#wasQuotedFrom	osti.gov