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Latest Speleothem Stories

Harsh Arizona Cave System Home To Hardy Communities Of Bacteria
2013-11-22 10:41:07

Ranjini Raghunath for redOrbit.com - Your Universe Online The Kartchner caverns in southeast Arizona are famous for their spectacular limestone rock formations, created by groundwater seeping and dissolving bedrock compounds over thousands of years. For all their beauty, the caverns are extremely harsh environments with no sunlight and precious little water and air, and have shown very few signs of life – until recently. Amid the quiet and the dark, an entire ecosystem of hardy...

2012-01-25 06:30:00

LAS VEGAS, Jan. 25, 2012 /PRNewswire/ -- UNLV geoscientist Matthew Lachniet and an international team of researchers used stalagmites to unveil a 2,400-year climate history from southwestern Mexico. This discovery, coupled with archaeological evidence, links the rise and fall of ancient Mesoamerican civilizations to changing rainfall. The findings were reported Jan. 23 as a "Pre-Issue Publication" of the journal Geology. Little is known about what contributed to the fate of the...

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2010-01-21 10:09:10

Ice Age climate records from an Arizona stalagmite link the Southwest's winter precipitation to temperatures in the North Atlantic, according to new research. The finding is the first to document that the abrupt changes in Ice Age climate known from Greenland also occurred in the southwestern U.S., said co-author Julia E. Cole of the University of Arizona in Tucson. "It's a new picture of the climate in the Southwest during the last Ice Age," said Cole, a UA professor of geosciences. "When it...

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2008-07-24 13:32:20

At Fort Stanton Cave in New Mexico, hundreds of feet below the Earth's surface, an odd formation made up of an intricate crust of tiny calcite crystals continues to intrigue cave specialists and explorers. The formation is known as "Snowy River", due to its long, flowing presence on the cave's floor. It is thought to be the longest continuous cave formation in the world "” at least 4 miles long "” and explorers have yet to find its end. "I think Snowy River is one of the primo...


Latest Speleothem Reference Libraries

Carlsbad Caverns National Park
2013-04-17 15:30:34

Carlsbad Caverns National Park is located in southeastern New Mexico in the United States. The park holds 46,766 acres of land, of which 2/3 is a designated wilderness, and is thought to have been discovered by Jim White, who entered the Carlsbad Caverns and named many of the areas within the caverns, including Queens Chamber, New Mexico Room, Green Lake Room, Giant Dome, Witch's Finger, and Bottomless Pit. President Calvin Coolidge established the area as a national monument in 1923, but it...

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2005-05-26 11:59:32

he mineral calcite is a calcium carbonate corresponding to the formula CaCO3 and is one of the most widely distributed minerals on the Earth's surface. It is a common constituent of sedimentary rocks, limestone in particular. It is also the primary mineral in metamorphic marble. It also occurs as a vein mineral in deposits from hot springs, and also occurs in caverns as stalactites and stalagmites. Calcite is often the primary constituent of the shells of marine organisms (e.g. plankton,...

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2005-05-26 09:38:30

Limestone is a sedimentary rock composed of the mineral calcite (calcium carbonate). The primary source of this calcite is usually marine organisms. These organisms secrete shells that settle out of the water column and are deposited on ocean floors as pelagic ooze (see lysocline for information on calcite dissolution). Secondary calcite may also be deposited by supersaturated meteoric waters (groundwater that precipitates the material in caves). This produces speleothems such as stalagmites...

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