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Stalagmite
A stalagmite is a type of
speleothem that rises from
the floor of a limestone
cave due to the dripping of
mineralized solutions and
the deposition of calcium
carbonate.
The corresponding formation
... > full story
Stalactite
A stalactite or dripstone,
is a type of speleothem that
hangs from the ceiling or
wall of limestone caves.
Stalactites are formed from
the deposition of calcium
carbonate and other
minerals, which is
... > full story
Cave
A cave is a natural
underground void large
enough for an adult human to
enter. Some scientists
stipulate that it must be
large enough that some
portion of it will not
receive daylight; however,
... > full story
Limestone
Limestone is a sedimentary
rock composed largely of the
mineral calcite (calcium
carbonate: CaCO3).
Limestones often contain
variable amounts of silica
in the form of chert or
flint, as well as varying
... > full story
Browse Reference Articles
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Mole (animal)
Moles are members of the family (Talpidae) of mammals in the order Insectivora that live underground, burrowing holes. They have cylindrical bodies covered in fur with small or covered eyes; the ears ... > more -
Shield volcano
A shield volcano is a wide volcano with shallowly-sloping sides. Shield volcanoes are formed by lava flows of low viscosity - lava that flows easily. Consequently, a volcanic mountain having a broad ... > more -
Shaanxi Earthquake
The Shaanxi earthquake or Hua County Earthquake is the deadliest earthquake on record, killing approximately 830,000 ... > more -
Engineering geology
Engineering Geology is the application of the science of geology to the understanding of geologic phenomena and the engineering solution of geologic hazards and other geologic problems for ... > more -
Groundwater
Groundwater is water located beneath the ground surface in soil pore spaces and in the fractures of geologic formations. A formation of rock/soil is called an aquifer when it can yield a useable ... > more -
Organic lawn management
Organic lawn management is the practice of establishing and caring for a garden lawn without the use of chemical inputs such as pesticides or artificial fertilisers. The garden lawn is a place where ... > more -
Volcanic cone
Volcanic cones are among the simplest volcano formations. They are built by fragments (called ejecta) thrown up (ejected) from a volcanic vent, piling up around the vent in the shape of a cone with a ... > more -
Sedimentary rock
Sedimentary rock is one of the three main rock groups (along with igneous and metamorphic rocks) and is formed in four main ways: by the deposition of the weathered remains of other rocks (known as ... > more -
Moment magnitude scale
The moment magnitude scale was introduced in 1979 by Tom Hanks and Hiroo Kanamori as a successor to the Richter scale and is used by seismologists to compare the energy released by ... > more
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