Pamukkale , turkey
Pamukkale, meaning "cotton castle" in Turkish, is a natural site in Denizli
Province in southwestern Turkey Pamukkale's terraces are made of travertine, a
sedimentary rock deposited by water from the hot springs.Travertine is a
form of limestone deposited by mineral
springs, especially hot springs.Travertine often has a fibrous or concentric appearance and exists in white, tan, and
cream-colored varieties
Aurora borealis
An aurora (plural: aurorae or auroras; from the Latin word aurora,
"sunrise") is a natural light display in the sky particularly in the
high latitude (Arctic and Antarctic) regions, caused by the collision of energetic
charged particles with atoms in the high altitude atmosphere (thermosphere).
WHITE SANDS DESERT,NEW MEXICO
Its white sands
are not composed of quartz, like most desert sands, but of gypsum and calcium
sulfate. Unlike other desert sands, it is cool to the touch, due to the
high rate of evaporation of surface moisture and the fact that the sands
reflect, rather than absorb, the sun's rays. At 1185 meters above sea level,
there are approximately 442 total square kilometers of dune fields and is known
to be the world's largest surface deposit of gypsum.
Gypsum is one of the most common
mineral compounds found on Earth but is rarely seen on the surface, as it
dissolves easily in water. The origin of this desert dates back to around 100
million years ago, during which it was covered by a shallow sea. As its waters
gradually receded, saltwater lakes were left behind, which eventually
evaporated in the sun. In addition to the salt, gypsum was also laid down in
thick deposits on the old seabed.
Rann of kutch, chir batti
Rann of Kutch (Gujarati: કચ્છનું
મોટું રણ Sindhi: رڻ ڪڇ) is a salt marsh located in the
western tip of Gujarat (primarily the Kutch
district), India. Chir Batti, Chhir
Batti or Cheer batti is a ghost
light reported in the Banni
grasslands, a seasonal marshy wetlands[1] and adjoining desert of the marshy salt flats of the Rann
of Kutch .
It is described as an
unexplained light occurring on dark nights as bright as a mercury lamp that
changes its colour to blue, red and yellow and resembles a moving ball
(reported also pear shaped form) of fire, which may moves as fast as an arrow
but may also stop. In modern science, it is generally accepted that most ignes
fatui are caused by the oxidation of phosphine (PH3),
diphosphane (P2H4), and methane (CH4). These compounds, produced by organic
decay, can cause photon emissions. Since phosphine and diphosphane mixtures
spontaneously ignite on contact with the oxygen in air, only small quantities
of it would be needed to ignite the much more abundant methane to create
ephemeral fires. Furthermore, phosphine produces phosphorus pentoxide as a
by-product, which forms phosphoric acid upon contact with water vapor.
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