bed formation thickness
1Formation evaluation gamma ray — In the field of formation evaluation, gamma ray log records natural radioactivity emission of formation. Measurement of natural emission of gamma rays in oil and gas wells are particularly helpful because shales and sandstones typically have… …
2Bed (geology) — In geology a bed is the smallest division of a geologic formation or stratigraphic rock series marked by well defined divisional planes (bedding planes) separating it from layers above and below. A bed is the smallest lithostratigraphic unit,… …
3Marcellus Formation — Stratigraphic range: Middle Devonian …
4Doig Formation — Stratigraphic range: middle Anisian to Ladinian …
5Clearwater Formation — Stratigraphic range: Albian …
6Fernie Formation — (Group) Stratigraphic range: Jurassic Fernie shales exposed in the mountains near Fernie …
7Llewellyn Formation — Infobox Rockunit name = Llewellyn Formation type = Geological formation prilithology = Sandstone otherlithology = Shale, Conglomerate, Coal namedfor = Llewellyn, Pennsylvania namedby = G. Wood, 1964 region = Appalachian Basin of eastern North… …
8Denmark Hill Insect Bed — Stratigraphic range: Carnian Type Geological formation Unit of Blackstone Formation Underlies Bluff coal seam Overlies Aberdare coal seam …
9Chinle Formation — Stratigraphic range: Triassic Chinle Badlands, Grand Staircase Escalante National Monument, Utah, US. Type Geological formation The Chinle is a geologic formation tha …
10Naturita Formation — The Naturita Formation was named by Robert G. Young (1960, 1965) for Cretaceous sedimentary rocks exposed near Naturita, Colorado. Naturita Formation exposed above the town of Naturita Colorado. The formation lies between the Cedar Mountain… …
