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aragonite
Natural environment; Speleology
A relatively rare form of calcium carbonate (CaCO3), chemically identical to the more common calcite but of orthorhombic crystal form. Its pure form is metastable in the cave ...
mineral
Natural environment; Speleology
Mineral components of a rock, often in macrocrystalline form.
dry valley
Natural environment; Speleology
Valley that lacks a permanent surface stream. Dry valleys are common on carbonate rocks with good primary permeability and occur on other permeable rocks such as sandstone. Dry ...
through cave
Natural environment; Speleology
Cave through which a stream runs from entrance to exit or formerly did so.
limestone
Natural environment; Speleology
Sedimentary rock containing at least 50% calcium carbonate by weight. The purer limestones consist almost entirely of calcite; less pure rocks may be referred to as, for example, ...
bolt
Natural environment; Speleology
A high tensile steel bolt used as an anchor; either a conical bolt screwed into a metal holder in a hole drilled in rock, causing expansion for grip, or a bolt with partially ...
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