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The AAPG/Datapages Combined Publications Database
AAPG Bulletin
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During the past 50 years the original formational term "Blakeley" has been employed to denote lithologic, stratigraphic, biostratigraphic, and chronologic
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parameters. The multiplicity of this usage has resulted in considerable confusion with respect to the typical lithologic character, faunal composition, correlation, and time-rock nomenclature. This paper defines and restricts the lithologic character of the Blakeley Formation and records the lithologic and biologic mixing that has taken place during the deposition of this formation.
The uppermost part of Weaver's type Blakeley Formation was deposited in a nonmarine environment and is lithologically distinct from the underlying strata. It appears advisable, therefore, to restrict the Blakeley Formation to the marine-deposited strata and to rename the superjacent unit.
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