Preliminary map of diatremes and alkalic ultramafic intrusions in the Missouri River Breaks and vicinity, north-central Montana

B. C. Hearn Jr.

doi:10.3133/ofr791128

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Preliminary map of diatremes and alkalic ultramafic intrusions in the Missouri River Breaks and vicinity, north-central Montana

Open-File Report 79-1128

By: B. C. Hearn Jr.

https://doi.org/10.3133/ofr791128

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Abstract

Additional publication details
Publication type	Report
Publication Subtype	USGS Numbered Series
Title	Preliminary map of diatremes and alkalic ultramafic intrusions in the Missouri River Breaks and vicinity, north-central Montana
Series title	Open-File Report
Series number	79-1128
DOI	10.3133/ofr791128
Year Published	1979
Language	ENGLISH
Description	1 map ;45 x 76 cm.