|
A blue hole is a submarine cave or sinkhole. They also called black holes, or vertical caves. Lechuguilla Cave, New Mexico A cave is a natural underground void large enough for a human to enter. ...
Devils Hole near Hawthorne, Florida, USA. A sinkhole, also known as a sink, shake hole, swallow hole, swallet, doline (in the Slovene language dolina means valley) or cenote, is a natural depression or hole in the surface topography caused by the removal of soil or bedrock, often both, by...
Blue holes are roughly circular, steep-walled depressions, and so named for the dramatic contrast between the dark blue, deep waters of their depths and the lighter blue of the shallows around them. Their water circulation is poor, and they are commonly anoxic below a certain depth; this environment is unfavorable for most sea life, but nonetheless can support large numbers of bacteria. Asphyxia is a condition of severely deficient supply of oxygen to the body. ...
Phyla Actinobacteria Aquificae Chlamydiae Bacteroidetes/Chlorobi Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Lentisphaerae Nitrospirae Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Verrucomicrobia Bacteria (singular: bacterium) are unicellular microorganisms. ...
Formation
Blue holes formed during past ice ages, when sea level was as much as 100-120 meters lower than at present. At those times, these formations were subjected to the same chemical weathering common in all limestone-rich terrains; this ended once they were submerged at the end of the ice age. Variations in CO2, temperature and dust from the Vostok ice core over the last 400 000 years For the animated movie, see Ice Age (movie). ...
For considerations of sea level change, in particular rise associated with possible global warming, see sea level rise. ...
The metre, or meter (symbol: m) is the SI base unit of length. ...
This is a drainage basin developed in response to a steady rate of lowering of the local base level, which is the lower boundary. ...
-1...
Blue holes are typically found on shallow carbonate platforms, exemplified by the Bahama Banks, as well as on and around the Yucatán Peninsula, such as at the Great Blue Hole at Lighthouse Reef Atoll, Belize. A carbonate platform is a geologic structure composed of carbonate sediments that have accumulated and lithified over a long period of time. ...
The Bahama Banks; the northern one is the Little Bahama Bank, and the southern the Great Bahama Bank. ...
The Yucatán peninsula as seen from space The Yucatán Peninsula separates the Caribbean Sea from the Gulf of Mexico. ...
The Great Blue Hole, located near Ambergris Caye, Belize. ...
See also Karst topography is a three-dimensional landscape shaped by the dissolution of a soluble layer or layers of bedrock, usually carbonate rock such as limestone or dolomite. ...
Sacred Cenote, Chichén Itzá Cenote in Quintana Roo, Mexico Cenote (pronounced in Spanish seh-no-teh and in English say-no-tay, plural: cenotes) is the name given in Central America and southern Mexico to a type of freshwater-filled limestone sinkhole. ...
Reference - Stephanie Schwabe and James L. Carew. "Blue Holes: An Inappropriate Moniker for Scientific Discussion of Water-Filled Caves in the Bahamas" (Accessed 3/8/06)PDF (652 KiB)
Portable Document Format (PDF) is a file format created by Adobe Systems in 1993 for desktop publishing use. ...
A kibibyte (a contraction of kilo binary byte) is a unit of information or computer storage, commonly abbreviated KiB (never kiB). 1 kibibyte = 210 bytes = 1,024 bytes The kibibyte is closely related to the kilobyte, which can be used either as a synonym for kibibyte or to refer to...
External links |
Feeds |
Contact