A speleothem (/ˈspiːliəθɛm/; from Ancient Greek σπήλαιον (spḗlaion) 'cave' and θέμα (théma) 'deposit') is a geological formation by mineral deposits that...

is an uncommon type of mineral structure, or speleogen (similar to a speleothem, but formed by erosion rather than accretion), occasionally found in caves...

(crystallized urine of pack rats). A stalactite is not necessarily a speleothem, though speleothems are the most common form of stalactite because of the abundance...

A cave pearl is a small, usually spherical, speleothem (cave formation) found in limestone caves. Cave pearls are formed by a concretion of calcium salts...

visitors since its discovery in 1878. The cavern system is adorned with speleothems such as columns, mud flows, stalactites, stalagmites, flowstone, and...

dissolved. The speleothem precipitation sequence is: calcite, Mg-calcite, aragonite, huntite and hydromagnesite. Hence, the most common speleothem (secondary...

earliest primates were discovered. Bolt's Farm was heavily mined for speleothem (calcium carbonate from stalagmites, stalactites, and flowstones) in the...

A soda straw (or simply straw) is a speleothem in the form of a hollow mineral cylindrical tube. They are also known as tubular stalactites. Soda straws...

happen as well. A speleothem is a geological formation by mineral deposits that accumulate over time in natural caves. Speleothems most commonly form...

an architectural feature for handling rain water Dripstone, a type of speleothem (cave formation) that includes for example stalactites Dripstone, a type...

with the late Holocene being called the Meghalayan stage/age, since a speleothem in Mawmluh cave indicating a dramatic worldwide climate event around 2250...

found in "solution caves", in limestone, where they are the most common speleothem. However, they may form in any type of cave where water enters that has...

between 25 and 27 °C, with a humidity higher than 95%. All sorts of speleothems, where numerous endemic troglobionts are living, can be found along the...

tenth the rainfall around 125 kya. Speleothems are detected only in Even-Sid-2. In the southern Negev Desert speleothems did not grow between 185–140 kya...

et al. (1995). "The Hekla 3 volcanic eruption recorded in a Scottish speleothem?". The Holocene. 5 (3): 336–342. Bibcode:1995Holoc...5..336B. doi:10...

the ceiling of a cave is a stalactite. The most common stalagmites are speleothems, which usually form in limestone caves. Stalagmite formation occurs only...

"Climate Dynamics During the Penultimate Glacial Period Recorded in a Speleothem from Kanaan Cave, Lebanon (central Levant)" (PDF). Quaternary Research...

(groundwater) in caves is also sometimes described as travertine. This produces speleothems, such as stalagmites and stalactites. Coquina is a poorly consolidated...

this may often be covered in breakdown from the ceiling. A variety of speleothems may be found in lava tubes including a variety of stalactite forms generally...

cave. In the latter, it can form stalactites, stalagmites, and other speleothems. It is frequently used in Italy and elsewhere as a building material...

straws and columns. These secondary mineral deposits in caves are called speleothems. The portions of a solutional cave that are below the water table or...

(Cantabria), a hand stencil in Maltravieso (Extremadura), and red-painted speleothems in Ardales (Andalucía). Collectively, these results show that cave art...

223–227 (9 October 2014). "using uranium-series dating of coralloid speleothems directly associated with 12 human hand stencils and two figurative animal...

"Gypsum flower" speleothem, Mammoth Cave Kentucky. Orange color is iron oxide from groundwater....

elevation of about 705 m (2,313 ft), distinctly exhibit a variety of speleothems ranging in size and irregularly shaped stalactites and stalagmites. The...

Moonmilk Mondmilch, Montmilch, Cave milk Speleothem rock Moonmilk ostensibly created from Macromonas bipunctata in the cave Bergmilchkammer Composition...

wells were noted by John Rutty on Howth Head, among other locations. Speleothem Stalactite Stalagmite Rutty, John (1757) A Methodical Synopsis of Mineral...

evolution of the Grand Canyon revealed by U-Pb dating of water table-type speleothems" (PDF). Science. 319 (5868): 1377–1380. Bibcode:2008Sci...319.1377P....

or under man-made structures and mimic the shapes and forms of cave speleothems, such as stalactites, stalagmites, flowstone etc. Calthemite is derived...

from some columns. The Hall of the Phantoms is named after an unusual speleothem. At the end of this cavern is a large rockfall which separates it from...