Snowy River Cave
Encyclopedia
Snowy River Cave is a cave
Cave
A cave or cavern is a natural underground space large enough for a human to enter. The term applies to natural cavities some part of which is in total darkness. The word cave also includes smaller spaces like rock shelters, sea caves, and grottos.Speleology is the science of exploration and study...

 passage within Fort Stanton Cave in Lincoln County, New Mexico
Lincoln County, New Mexico
-2010:Whereas according to the 2010 U.S. Census Bureau:*85.1% White*0.5% Black*2.4% Native American*0.4% Asian*0.0% Native Hawaiian or Pacific Islander*2.5% Two or more races*9.1% Other races*29.8% Hispanic or Latino -2000:...

, obtaining its name from a beautiful stream bed of white calcite
Calcite
Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate . The other polymorphs are the minerals aragonite and vaterite. Aragonite will change to calcite at 380-470°C, and vaterite is even less stable.-Properties:...

.

Geology

The bed of Snowy River is covered with bright white calcite
Calcite
Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate . The other polymorphs are the minerals aragonite and vaterite. Aragonite will change to calcite at 380-470°C, and vaterite is even less stable.-Properties:...

. Over time, ancient, slow moving ground water dissolved the limestone
Limestone
Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate . Many limestones are composed from skeletal fragments of marine organisms such as coral or foraminifera....

 walls of the cave and, with the help of microorganisms, recrystallized limestone into the white-colored mineral. Since prehistoric times, ground water saturated with dissolved calcite has periodically flooded the cave, followed by extended periods of dryness, leaving behind coatings and deposits.

The Bureau of Land Management
Bureau of Land Management
The Bureau of Land Management is an agency within the United States Department of the Interior which administers America's public lands, totaling approximately , or one-eighth of the landmass of the country. The BLM also manages of subsurface mineral estate underlying federal, state and private...

 reports that Snowy River may be the largest continuous cave formation
Speleothem
A speleothem , commonly known as a cave formation, is a secondary mineral deposit formed in a cave. Speleothems are typically formed in limestone or dolostone solutional caves.-Origin and composition:...

 in America.

Hydrology

Discovered in 2001, Snowy River is a section of a much larger cave complex. Researchers and explorers have not yet determined how the formations relate to the geology
Geology
Geology is the science comprising the study of solid Earth, the rocks of which it is composed, and the processes by which it evolves. Geology gives insight into the history of the Earth, as it provides the primary evidence for plate tectonics, the evolutionary history of life, and past climates...

 and hydrology
Hydrology
Hydrology is the study of the movement, distribution, and quality of water on Earth and other planets, including the hydrologic cycle, water resources and environmental watershed sustainability...

. After visits to the dry riverbed in 2001, 2003, 2005, explorers were surprised to find Snowy River flowing with water in 2007 and also in 2010 after a heavy winter snowfall. The non-profit Fort Stanton Cave Study Project group has a long history of work in the cave.

Biology

From crusts on the cave walls, antibiotic-producing actinobacteria
Actinobacteria
Actinobacteria are a group of Gram-positive bacteria with high guanine and cytosine content. They can be terrestrial or aquatic. Actinobacteria is one of the dominant phyla of the bacteria....

 and some 36 strains of manganese-using bacteria have been discovered. New Mexico Institute of Mining and Technology
New Mexico Institute of Mining and Technology
New Mexico Institute of Mining and Technology is a university located in Socorro, New Mexico....

says the organisms live in this isolated environment by chemically breaking down manganese compounds, creating reconstituted mineral byproducts in the process that may have pharmaceutical uses. Scientists anticipate new biological as well as geologic discoveries will be found.

External links

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