About: http://webisa.webdatacommons.org/235277946

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	(2 million years ago), laid on top of ancient rocks such as granites, schists and other crystalline rocks.
http://www.w3.org/ns/prov#wasQuotedFrom	gpo.gov