Results: 1 - 3 of 3
Dec 31, 1970
Bulletin
… of the Porcupine Hills Formation sandstone is characterized by a low …
Aug 31, 1977
Open File Report
… Formation (oil impregnated sandstone), the Cretaceous … the Grand Rapids Formation (sandstone) and younger …
Mar 31, 1949
Information Series
… too small. In 1946 a deposit of sandstone was found near the town …