Skip Navigation

Geophysical Investigations, Tri-State District

Prev Page—Start || Next Page—Introduction


Contents

Foreword

Introduction

Purpose of the investigation

Acknowledgments

Previous geophysical investigations in the Tri-State area

Geography

Location of the area

Topography

Zinc and lead production in the Tri-State district

Geology

General geologic setting

Method of selecting areas for geophysical investigations

Geologic description of the areas studied in geophysical investigations

Neutral area

Mullen area

Jarrett area

Walton area

Karcher area

Swalley area

Greenback area

McBee-Martin area

Geophysical Survey

Instruments, field procedure, and presentation of data

Introduction

Magnetic survey

Instruments

Field procedure

Correction of field measurements

Temperature corrections

Diurnal corrections

Latitude and longitude corrections

Datum correction

Accuracy of data

Presentation of data

Gravity survey

Instruments

Field procedure

Computation and correction of field measurements

Calibration of the instrument

Elevation correction

Latitude correction

Regional gradient

Accuracy of data

Presentation of data

Natural potential survey

Instruments

Field procedure

Computation and correction of field measurements

Accuracy of data

Presentation of data

Resistivity survey

Instruments and measurement technique

Field procedure

Computation of field measurements

Factors influencing interpretation

Presentation of data

Geothermal survey

Instruments and equipment

Field procedure

Computation and correction of field measurements

Accuracy of data

Presentation of data

Geochemical survey

Instruments and procedure

Discussion of elements

Relation between spectral intensity and sample composition

Accuracy of data

Sources of analytical error

Errors due to variations in arcing conditions

Errors due to variations in visual determination of spectral intensity

Errors due to impurities in the electrodes

Errors due to interfering lines

Errors due to contamination of samples

Errors due to sampling

Errors due to variations in method of developing spectrograms

Errors due to variations in exposure time

Validity of readings

Validity of soil analyses

Mullen area

Walton area

Karcher area

Swalley area

Greenback area

Validity of Cherokee shale analyses

Validity of Mississippian limestone analyses

Presentation of data

Geological basis for geophysical interpretations

Magnetic anomalies

Gravity anomalies

Natural potential anomalies

Resistivity anomalies

Geothermal anomalies

Geochemical anomalies

Geophysical interpretations and geological correlations

Geological correlations in different areas

Regional survey

Magnetic survey

Gravity survey

Comparison and correlation of magnetic and gravity results

Geochemical survey

Shale samples

Limestone samples

Shale and limestone samples

Neutral area

Magnetic survey

Gravity survey

Natural potential survey

Resistivity survey

Profile

Depth stations

Geothermal survey

Geochemical survey

Conclusions

Mullen area

Magnetic survey

Gravity survey

Natural potential survey

Resistivity survey

Profiles

Depth stations

Geothermal survey

Geochemical survey

Jarrett area

Walton area

Magnetic survey

Gravity survey

Natural potential survey

Resistivity survey

Profiles

Depth stations

Geothermal survey

Geochemical survey

Summary

Karcher area

Magnetic survey

Gravity survey

Natural potential survey

Resistivity survey

Profiles

Depth stations

Geothermal survey

Geochemical survey

Summary

Swalley area

Gravity survey

Resistivity survey

Geochemical survey

Greenback area

Gravity survey

Resistivity survey

Geothermal survey

Geochemical survey

McBee-Martin area

Results of gravity, resistivity, and temperature measurements

Summary and coordination of geophysical results

Factors influencing interpretations

Regional magnetic and gravity investigations

Investigations in local areas

Magnetic survey

Gravity survey

Natural potential survey

Resistivity survey

Geothermal survey

Geochemical survey

Conclusions

Evaluation of geophysical prospecting as an aid to ore exploration in the Tri-State district

References


Prev Page—Start || Next Page—Introduction

Kansas Geological Survey, Geology
Placed on web Oct. 29, 2018; originally published December, 1942.
Comments to webadmin@kgs.ku.edu
The URL for this page is http://www.kgs.ku.edu/Publications/Bulletins/44/01_contents.html