Oil's origin Crude oil -- properly called petroleum -- includes natural gas, a flammable fluid usually found with oil. Petroleum is the remains of organic material that was deposited, usually in marine environments, millions of years ago. One seep, in Michigan's Upper Peninsula, comes from billion-year-old rocks, although most commercial petroleum was generated from rocks that are between 65 million and 213 million years old. Plants use photosynthesis to fix ...

Back to the Oil Shale Homepage. Estonian oil shale Compiled by Mihkel Koel in 1999 1. Resources There are two types of oil shales in Baltic Basin: the Middle Ordovician kukersite mined in the Estonia and St.Petersburg fields (Russia), and lower Ordovician Dictyonema shale. The Dictyonema shale occurs on an area of about 11000 km2 in the northern and north-western parts of the republic at a depth of 10-90 m; the thickness of the seam is 1-8 m. Reserves of this shale considerably surp ...

Hubbert Peak of Oil Production Bulletins 60 Minutes on Sunday, February 19 on climate change and global warming, on CBS stations at 7:00 ET/PT. (more) News Schoolhouse Overview Summary Editorials Experts Bartlett Campbell Cleveland Deffeyes Duncan Hubbert Ivanhoe Laherrère Reynolds Swenson Youngquist Debate Scenarios Nations & Regions • California • Germany • UK Natural Gas Alternatives Environment History Politics Transport ...

Issues Index First Section Geological Settings Origins of Oil and Gas Migration Trapping Oil and Gas Forces that shape the Earth's crust The Crust around Britain Foundations Forces Western Basins North Sea Basins The North Sea - The Southern Gasfields Oil and Gas from the Buried Rift Valley A closer look at some North Sea fields Oil and Gas from the Western Basins Exploration Discovering the Underground Structure Drilling Getting the ...