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The geology of the Permian Carbon Ridge Formation, east-central Nevada
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Mackay632_StrawsonJr.pdf
Date
1981Type
ThesisDepartment
Geological Sciences and Engineering
Degree Level
Master's Degree
Degree Name
Geology
Abstract
Wolfcampian carbonate sediments of the Carbon Ridge Formation, near Eureka, Nevada, and unnamed Wolfcampian to late Leonardian carbonate and clastic sediments in the northern Diamond Range were studied. Numerous species of fusulinids of the genera Triticites, Schwagerina, Paraschwagerina, Pseudo schwagerina, Boultonia, and Parafusulina provided stratigraphic control. The lateral and vertical extent of the Carbon Ridge Formation have been revised. Wolfcampian sediments of the Carbon Ridge Formation consist of silty lime mudstones, siltstones, fossiliferous wackestones, and bio- clastic packstones. Deposition of marine sediments on a carbonate ramp of normal marine salinity, generally below wave base, is indicated. To the south, marine deposition was overwhelmed by terrigenous elastics of the Garden Valley Formation during early Leonardian time. In the northern Diamond Range a shoaling upward cycle of carbonate deposition continued into middle Leonardian time. By late Leonardian time carbonate deposition was overwhelmed by sandstones and conglomerates of the Garden Valley Formation.
Description
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Permanent link
http://hdl.handle.net/11714/1732Subject
Wolfcampian carbonate sedimentsCarbon Ridge Formation
Eureka, Nevada
Leonardian carbonate sediments
Leonardian clastic sediments
Wolfcampian clastic sediments
Diamond Range
fusulinids
genera triticites
Schwagerina
Paraschwagerina
Pseudo Schwargerina
Boultonia
Parafusulina
lime mudstones
siltstones
fossiliferous wackestones
bio-clastic packstones
marine sediments
carbonate ramp
marine salinity
terrigenous elastics
Garden Valley Formation
Leonardian time
carbonate deposition
sandstones
Mackay Science Project
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