About: http://webisa.webdatacommons.org/111883495

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	Upon the basalt rests the so-called Coal formation, 35 to 50 ft. thick; the lower part of this is mainly fireclay and sandstone, the upper part is weathered clay with thin layers of brown coat and shale.
http://www.w3.org/ns/prov#wasQuotedFrom	wikisource.org