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The Geology of Russell County, Kansas

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Part I--The Geology of Russell County, Kansas, with special reference to oil and gas resources, by W. W. Rubey and N. W. Bass


Significance of the investigation in Russell County (by Raymond C. Moore)

Methods of field work


Geography and topography

History of oil and gas production

Character of the oil

Rocks exposed



Alluvium, soil and talus material

Lower terrace deposits

Dune sand (?)


Gravel deposits of Saline and Smoky Hill rivers

Subdivisions of the gravels

Lower gravel beds on Saline river

Upper gravel beds on Saline river

Gravel beds near Smoky Hill river

Volcanic ash


Age and correlation

Tertiary (?)

High terrace gravels (*Ogallala? formation)

Uselessness of Cenozoic rocks for structural mapping



Niobrara formation

Smoky Hill chalk member

Character and distribution


Means of recognition

Difficulty of mapping


Fort Hays limestone member

Character and distribution


Topographic prominence

Means of recognition

Unreliability of the Fort Hays member for detailed mapping


The term Benton

Carlile shale

Blue Hill shale member

Upper sandstone division

Lower shale and concretion division


Topographic expression

Soil and vegetation

Means of recognition

Horizons suitable for mapping


Fairport chalky shale member

Character and distribution

Distinctive beds


Means of recognition

Beds useful in detailed mapping

Name and correlation

Greenhorn limestone

Upper member

Jetmore chalk member

Unnamed member

Lincoln limestone member

Distinctive colors of the members


Topographic expression

Soil and vegetation

Resemblance to other Cretaceous strata

Value for detailed mapping

Names of members

Graneros shale




Distinguishing features

Unsuitability for mapping

Name and correlation

Dakota sandstone

Evenly bedded strata

Upper sandstone unit

Lignitic beds

Clay shale beds

Variegated mudstone unit

Rocktown channel sandstone member


Distribution of the sandstone lenses



Fossils in the Dakota sandstone

Varying prominence

Similarity to other strata

Uselessness of the Dakota sandstone for mapping of structure

Rocks concealed


Surface rocks

Structural contour map of the top of the Greenhorn limestone

Prominent north-trending anticlines

The Fairport-Natoma anticline

Lesser folds


Attitude of rocks not exposed

Thinning of shallower rock units northeastward

Map of the elevations of the base of the salt series

Increasing steepness of dip with depth below surface

Origin (by W. W. Rubey)

Conformity of strata to the shape of buried land forms

Effect of buried lenses of sandstone

Structure in surface rocks formed by movement along deep-seated faults

Folds formed by leaching of salt beds

Application of principles to structure of Russell County

Gentle unsystematic folds

Prominent north-trending anticlines

Probable origin of structure of Russell County

Economic significance of method of origin

Part II--A Subsurface Correlation of the Stratigraphic Units from Russell County to Marion County, Kansas, by M. N. Bramlette

Part III--Fossils from Wells in Central Kansas, by Raymond C. Moore


[* Note: In scientific usage, as a geological term, the accepted spelling of this word is "Ogalalla." The spelling used in this bulletin, however, is in conformity to Webster's New International Dictionary.]

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Kansas Geological Survey, Geology
Placed on web March 17, 2014; originally published 1925.
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