4. Shonkin Sag and Square Butte Laccoliths, Montana

  1. B. Carter Hearn Jr.,
  2. F. O. Dudas,
  3. D. H. Eggler,
  4. Stewart Mccallum,
  5. Hugh E. O'Brien,
  6. Anthony J. Irving,
  7. Donald W. Hyndman,
  8. David Alt,
  9. Kathy Tureck-Schwartz and
  10. R.B. Berg
  1. Donald W. Hyndman,
  2. David Alt and
  3. Kathy Tureck-Schwartz

Published Online: 19 MAR 2013

DOI: 10.1029/FT346p0037

Montana High-Potassimn Igneous Province: Crazy Mountains to Jordan, Montana

Montana High-Potassimn Igneous Province: Crazy Mountains to Jordan, Montana

How to Cite

Hyndman, D. W., Alt, D. and Tureck-Schwartz, K. (1989) Shonkin Sag and Square Butte Laccoliths, Montana, in Montana High-Potassimn Igneous Province: Crazy Mountains to Jordan, Montana (eds B. C. Hearn, F. O. Dudas, D. H. Eggler, S. Mccallum, H. E. O'Brien, A. J. Irving, D. W. Hyndman, D. Alt, K. Tureck-Schwartz and R.B. Berg), American Geophysical Union, Washington, D. C.. doi: 10.1029/FT346p0037

Author Information

  1. Department of Geology, University Of Montana, Missoula

Publication History

  1. Published Online: 19 MAR 2013
  2. Published Print: 1 JAN 1989

ISBN Information

Print ISBN: 9780875906386

Online ISBN: 9781118667248

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Keywords:

  • Laccolith;
  • Liquid immiscibility;
  • Pegmatite;
  • Shonkin;
  • Syenites

Summary

This chapter contains sections titled:

  • Shonkin Sag Laccolith

  • Square Butte Laccolith

  • The Mottled Rock in Square Butte Laccolith: is it the Product of Incipient Separation of Immiscible Magmas?

  • The Role of Intrusion Size and Water in Differentiation of Shonkin Sag and Square Butte Laccoliths

  • The Weight of the Evidence: Differentiation Through Crystal Fractionation Versus Liquid Immiscibility

  • Acknowledgements

  • Road Log - Day 4: Shonkin Sag and Square Butte Laccoliths

  • Road Log - Fort Benton to Havre (B.C. Hearn, Jr.)