Results: 1 - 5 of 5
May 31, 2001
Special Report
… geological setting of the mid-Cretaceous Shaftesbury Formation … rocks. During deposition of the Cretaceous Colorado Group … geochemical setting of the mid-Cretaceous Shaftesbury Formation …
Apr 13, 2008
Special Report
… depleted gas reservoirs in the Cretaceous Lower Mannville Group. … long before it may reach the sub-Cretaceous unconformity. Even there, thick overlying Cretaceous shales will impede any …
May 31, 2003
Special Report
… thought to be of middle to upper Cretaceous age and may, therefore, … have occurred during the Upper Cretaceous. … Paganelli, F. … …
Jun 04, 2008
Special Report
… metal deposits hosted within Cretaceous shale bedrock and have …
Feb 28, 2005
Special Report
… in comparison to its Upper Cretaceous host rocks. It produces …