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Search indexed USGS publications on groundwater, aquifers, geologic maps, mineral resources and earthquakes. Explore source records by subject and place.

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At least 37 records · Page 2Linked to original sources
USGS2010

C is for cactolith

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

Aggregates Manager↗
USGS2010

D is for diamond

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

Aggregates Manager↗
USGS2010

E is for earth

The planet's layers - particularly the earth's crust - provide many of life's essential building blocks.

Aggregates Manager↗
USGS2010

F is for fuller's earth

Before putting on a wool cardigan, make sure you know how the wool was cleaned.

Aggregates Manager↗
USGS2010

G is for gnome

Possibly based on miners from Southeast Germany, ceramic gnomes feature the pointed red hat often worn by these miners.

Aggregates Manager↗
USGS2011

Q is for quartz

This versatile mineral has been used in everything from ceremonial rattles to sonar transducers to quartz watches.

Aggregates Manager↗
USGS2011

S is for sunset crater

A scenic trek always includes an interesting landmark - a volcanic cinder cone.

Aggregates Manager↗
USGS2013

The Nation's top 25 construction aggregates producers

U.S. production of construction aggregates in 2011 was 2.17 billion short tons, valued at $17.2 billion, free on board (f.o.b.) at plant. Construction aggregates production decreased by 37 percent, and the associated value decreased by 25 percent, compared with the record highs reported in 2006. In 2011, construction aggregates production increased for the first time since 2006, owing to a very slight increase in the production of both construction sand and gravel and crushed stone. The average unit value, which is the f.o.b. at plant price of a ton of material, increased slightly, but is still less than the average unit value of two years prior.

Aggregates Manager↗