Publications

Real diamonds are a girl's best friend, but synthetic ones opened up a whole new world for granite.

Geologic jargon - though handy for triple-word scores - should be used in moderation.

An enterprising operator finds a solution to a geologic problem that had been in the making for 1.4 million years.

No abstract available.

From cow paths to freeways, we seldom appreciate what went into America's highway system.

K - the chemical symbol for the element/metal potassium.

From Mt. Vesuvius to Hawaii, molten rock continues to leave its mark.

The early days of drilling created a test of strength and endurance for miners.

Once commonly used in coal and wood-burning stoves, U.S. production of mica has all but ceased.

The Lake Mead fault system is a northeast-striking, 130-km-long zone of left-slip in the southeast Great Basin, active from before 16 Ma to Quaternary time. The northeast end of the Lake Mead fault system in the Virgin Mountains of southeast Nevada and northwest Arizona forms a partitioned strain field comprising kinematically linked northeast-striking left-lateral faults, north-striking normal fa

Phosphorite from the Meade Peak Phosphatic Shale member of the Permian Phosphoria Formation has been mined in southeastern Idaho since 1906. Dumps of waste rock from mining operations contain high concentrations of Se which readily leach into nearby streams and wetlands. While the most common mineralogical residence of Se in the phosphatic shale is elemental Se, Se(0), Se is also an integral compo

No abstract available.