Hydrology of Giant Springs Great Falls Montana
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University of Montana ScholarWorks at University of Montana Graduate Student Theses, Dissertations, & Professional Papers Graduate School 1976 Hydrology of Giant Springs Great Falls Montana Garry Ronald Grimestad The University of Montana Follow this and additional works at: https://scholarworks.umt.edu/etd Let us know how access to this document benefits ou.y Recommended Citation Grimestad, Garry Ronald, "Hydrology of Giant Springs Great Falls Montana" (1976). Graduate Student Theses, Dissertations, & Professional Papers. 7343. https://scholarworks.umt.edu/etd/7343 This Thesis is brought to you for free and open access by the Graduate School at ScholarWorks at University of Montana. It has been accepted for inclusion in Graduate Student Theses, Dissertations, & Professional Papers by an authorized administrator of ScholarWorks at University of Montana. For more information, please contact [email protected]. HYDROLOGY OF GIANT SPRINGS, GREAT PALLS, MONTANA By Garry R. Grimestad Petroleum Engineer, Colorado School of Mines, I965 Presented in partial fulfillment of the requirements for the degree of Master of Science in Forestry University of Montana 1 9 7 6 Approved hy: Chairman, Board of Examiners D ^ ^ 3 . I<^7Ù Date Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. UMI Number: EP38144 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a complete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. UMT UMI EP38144 Published by ProQuest LLC (2013). Copyright in the Dissertation held by the Author. Microform Edition © ProQuest LLC. All rights reserved. This work is protected against unauthorized copying under Title 17, United States Code ProQ^st: ProQuest LLC. 789 East Eisenhower Parkway P.O. Box 1346 Ann Arbor, Ml 48106 -1346 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. ABSTRACT Grimestad, Garry R., M.S., December, 1976 Forestry Hydrology of Giant Springs, Great Falls, Montana (57 pp.) Director: Richard L. Konizeski /f? ^ A carbon-14 and geochemical investigation was conducted to de termine the recharge regimen and tra n s it time of water which issues from Giant Springs, near Great F alls , Montana. The source is meteoric and probably stream water which in filtr a te s into carbonate rocks of the Mississippian Age Madison Group: probably those exposed on the north flank of the L ittle Belt Mountains, approximately 40 to 65 kilometers (25 to 40 miles) south of Giant Springs. Transit time is not less than 2900 years, nor more than 6300 years. n Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. ACKNOWLEDGMENTS I sincerely appreciate the advice and help rendered by Dr. Richard L. Konizeski of the University of Montana School of Forestry, Mr. Don L. Coffin of the United States Geological Survey, and others. They made significant contributions to this project. However, they are in no way responsible fo r any shortcomings contained herein. I l l Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. TABLE OF CONTENTS Page ABSTRACT.................................................................................................................i i ACKNOWLEDGMENTS..............................................................................................iÜ LIST OF TABLES .............................................................................................v ii LIST OF FIGURES........................................................................................... v i i i CHAPTER I . INTRODUCTION .................................................................................... 1 Objectives and Techniques ..................................................... 1 Location and Description .......................................................... 1 Previous W ork........................................................................... 2 I I . NATURAL CONTROLS ............................................................................ 3 Regional and Local Geology .................................................. 3 Precipitation and Temperature .......................................... 3 I I I . POTENTIAL SOURCES OF RECHARGE ............................................... 9 Missouri River ........................................................................... 10 Kootenai Formation .................................................................. 10 Madison Group ........................................................................... 11 IV. THEORETICAL CONSIDERATIONS ....................................................... 14 Geochemical Characterization .............................................. 14 Definitions and conventions .......................................... 14 Hydrochemical facies .......................................................... 16 iv Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. TABLE OF CONTENTS (Continued) CHAPTER Page P a rtial pressure of carbon dioxide (PCOg) ................. 16 Calcite saturation index (SIC) ..................................... 17 Dolomite saturation index (SID) ..................................... 18 Total dissolved carbon ( C ^ ) ................................................ 18 Carbon-14 D a t i n g ................................. 19 Formation, decay, and apparent carbon age ................. 19 Incorporation of carbon-14 into ground-water . 21 Dilution of ground-water carbon-14 content .... 22 Correction of apparent carbon age ................................. 22 Related Physical Constants .................................................. 24 V. SAMPLING..............................................................................................27 L o catio n s ..........................................................................................27 Procedure..........................................................................................31 Carbon Extraction ....................................................................... 31 VI. ANALYSIS.............................................................................................. 33 Determination of Dissolved Chemical Species................. 33 Determination of Carbon-14 Activity ................................. 34 Determination of Stable Carbon Isotope Ratios .... 35 Analytical Results .................................................................. 35 Calculated Results ................................................................... 35 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. TABLE OF CONTENTS (Continued) CHAPTER Page V II. INTERPRETATION.....................................................................................45 Geochemical......................................................... 45 Is o to p ic ............................................................................................45 Effects of Possible Contamination ................................. 46 P o ss ib ility of Carbon Exchange ........................................... 47 V III. SUMf'IARY AND CONCLUSIONS................................................................ 52 BIBLIOGRAPHY ...................................................................................................... 55 VI Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. LIST OF TABLES Table Page 1. Values of Debye-Huckel a for Some Io n............................ s 25 2. Values of Debye-Huckel A and B (aqueous solution) . 25 3. Negative Log of Some Equilibrium Constants.................... 26 4. Stable Carbon Isotope Ratios of Some Substances . 26 5. Sampling Locations ...................................................................... 28-29 6 . Results of Chemical Analysis ................................................. 36-37 7. Apparent Ages and Stable Isotope Ratios of Sample Carbon ............................................................................... 38 8 . Ionic Concentration Expressed as Equivalent Fractions 40 9. Carbon Chemistry Calculations ............................................. 43 10. Theoretically Corrected Sample Ages ................................ 44 11. Corrected Age of Contaminated Samples (based on 25-gallon samples) .............................................. 48 12. Time Required fo r Total Exchange of Carbon.................... 51 13. A Range of Calculated Ages Which Probably Include the True Age of Giant Springs Water ................................. 51 14. Metric to English Conversions ............................................. 54 VI1 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. LIST OF FIGURES Figure Page 1. Mountains and Streams in West-Central Montana .................. 4 2. Up-Dip Exposures of the Giant Springs Stratigraphie Column ............................................................................................... 5 3. Geologic Cross-Section (Giant Springs to the Little Belt Mountains) .............................................................. 7 4. Average Annual Precipitation in the Great Falls Area . 8