As a result, shales are typically deposited in very slow moving water and are often found in lakes and lagoonal deposits, in river deltas, on floodplains and offshore below the wave base.

citation

Wikipedia contributors. (2023, December 13). Shale. In Wikipedia, The Free Encyclopedia. Retrieved March 5, 2024, from https://en.wikipedia.org/w/index.php?title=Shale&oldid=1189741853

1974 (Wikipedia) 1974 (MCMLXXIV) was a common year starting on Tuesday of the Gregorian calendar, the 1974th year of the Common Era (CE) and Anno Domini (AD) designations, the 974th year of the 2nd millennium, the 74th year of the 20th century, and the 5th year of the 1970s decade.

Shale (Wikipedia) Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2Si2O5(OH)4) and tiny fragments (silt-sized particles) of other minerals, especially quartz and calcite. Shale is characterized by its tendency to split into thin layers (laminae) less than one centimeter in thickness. This property is called fissility. Shale is the most common sedimentary rock.