NDLI: Source rock geochemistry of the southern Tyee Basin, southwest Oregon

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Source rock geochemistry of the southern Tyee Basin, southwest Oregon

Content Provider	Semantic Scholar
Author	Long, David E.
Copyright Year	1994
Abstract	An abstract of the thesis of David E. Long for the Master of Science in Geology presented May 12, 1994. Title: Source Rock Geochemistry of the Southern Tyee Basin, Southwest Oregon. This study examined source rock geochemistry of the southern Tyee Basin. Total organic carbon, rock-eval pyrolysis, vitrinite reflectance, thermal alteration index and visual assessments were performed on splits from cutting samples from five wells and on outcrop samples from four measured sections. Organic matter was found to be dispersed, averaging about 0.5 weight percent. The organic matter is primarily terrestrial in origin, or type Ill, with low potential for gas production and no oil potential. Three coal samples are clearly the richest sources of organic matter examined in this study. Maturity of all samples is low. The most mature samples are near or possibly just within the gas production window. Maturation indices indicate that most of the basin cannot be expected to contain sedimentary rocks that have matured to the point of producing hydrocarbons. There is a possibility of deeply buried sediments containing more mature organic matter in the southeastern part of the basin, based on the latest tectonic and stratigraphic models of the basin. While these results do not preclude the discovery of oil or gas in the Tyee basin, the encouragement they offer is limited. SOURCE ROCK GEOCHEMISTRY OF THE SOUTHERN TYEE BASIN, SOUTHWEST OREGON
File Format	PDF HTM / HTML
DOI	10.15760/etd.5924
Alternate Webpage(s)	https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=5049&context=open_access_etds
Alternate Webpage(s)	https://doi.org/10.15760/etd.5924
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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