Mine detail: Ralph Quad

Previously called ''

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Location

Lat / long:

45.85186, -103.12557

Resource(N)

Secondary:	Lignite
Tertiary:	Natural Gas, Sand and Gravel, Construction, Petroleum (Oil)

Production

Operation type:	Unknown
Production size:	Small
Development status:	Occurrence

Geology

Structure:

THE RALPH QUADRANGLE LIES ON THE SOUTHWEST FLANK OF THE DAKOTA (WILLISTON) BASIN AND IS CHARACTERIZED BY A REGIONAL DIP OF 10 FT/MI (1.89 M/KM). MINOR FAULTS AND SHALLOW FOLDS, AMPLITUDE AND DISPLACEMENT LESS THAN 20 FT (6.10 M), ARE PRESENT, BUT HAVE NO PERSISTENT STRIKE.

References

MRDS	SD00857
DEP	60001100
Reference	STEVENSON, ROBERT E., 1957, RALPH QUAD, SOUTH DAKOTA GEOLOGICAL SURVEY