Dennis Shale
Dennis Shale
Dennis Shale (pronunciation: /ˈdɛnɪs ʃeɪl/) is a geological formation that is part of the Green River Formation. It is named after the town of Dennis, where the formation was first discovered.
Etymology
The term "Dennis Shale" is derived from the town of Dennis, where the formation was first identified. The word "shale" is from the Old English scealu, meaning "shell" or "husk", which refers to the layered nature of this type of sedimentary rock.
Description
Dennis Shale is a type of oil shale that is rich in kerogen, a mixture of organic chemical compounds that yield oil and gas upon heating. This makes it a significant source of fossil fuels. The formation is primarily composed of fine-grained sediments, including clay and silt, which have been compacted over millions of years.
Location and Age
The Dennis Shale is located in the Uinta Basin of Utah, USA. It is part of the larger Green River Formation, which spans across Colorado, Wyoming, and Utah. The formation is estimated to be of Eocene age, dating back approximately 50 million years.
Related Terms
- Green River Formation: A geological formation that includes the Dennis Shale.
- Kerogen: The organic material in oil shale that yields oil and gas upon heating.
- Oil Shale: A type of rock that contains significant amounts of kerogen.
- Uinta Basin: A geological basin in Utah, USA, where the Dennis Shale is located.
- Eocene: A geological epoch dating from 56 to 33.9 million years ago.
External links
- Medical encyclopedia article on Dennis Shale
- Wikipedia's article - Dennis Shale
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