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Contents
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
Acknowledgments
Geography and topography
History of oil and gas production
Character of the oil
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
Fossils
Age and correlation
High terrace gravels (*Ogallala? formation)
Uselessness of Cenozoic rocks for structural mapping
Smoky Hill chalk member
Character and distribution
Fossils
Means of recognition
Difficulty of mapping
Name
Fort Hays limestone member
Character and distribution
Fossils
Topographic prominence
Means of recognition
Unreliability of the Fort Hays member for detailed mapping
Name
Blue Hill shale member
Upper sandstone division
Lower shale and concretion division
Fossils
Topographic expression
Soil and vegetation
Means of recognition
Horizons suitable for mapping
Name
Fairport chalky shale member
Character and distribution
Distinctive beds
Fossils
Means of recognition
Beds useful in detailed mapping
Name and correlation
Upper member
Jetmore chalk member
Unnamed member
Lincoln limestone member
Distinctive colors of the members
Fossils
Topographic expression
Soil and vegetation
Resemblance to other Cretaceous strata
Value for detailed mapping
Names of members
Lithology
Fossils
Exposures
Distinguishing features
Unsuitability for mapping
Name and correlation
Evenly bedded strata
Upper sandstone unit
Lignitic beds
Clay shale beds
Variegated mudstone unit
Rocktown channel sandstone member
Lithology
Distribution of the sandstone lenses
Name
Origin
Fossils in the Dakota sandstone
Varying prominence
Similarity to other strata
Uselessness of the Dakota sandstone for mapping of structure
Surface rocks
Structural contour map of the top of the Greenhorn limestone
Prominent north-trending anticlines
The Fairport-Natoma anticline
Lesser folds
Faults
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
Plates
[* 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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