Sandstone is a rock that contains of sand sized grains and sandstone is the second most common sedimentary rock on earth and probably the most known. The history and origin of a sandstone can often be told by the sorting of the grains, by the particle size, the particles roundness and mineral composition.
Aquarius Personality: January 20 - February 18. Aquarius is the eleventh sign of the astrological year and is known by its astrological symbol, the Water Bearer. Aquarius individuals are intelligent, progressive and independent. With Uranus as the ruling planet, people born under this sign are free-thinking and unconventional.
For other uses with the term Aquarius, see Aquarius (disambiguation). The Age of Aquarius redirects here. For the song, see Aquarius/Let the Sunshine In. Age of Aquarius is an astrological term denoting either the current or forthcoming astrological age, depending on the method of calculation. Astrologers maintain that an astrological age is a product of the earth's slow precessional rotation and lasts for 2,160 years, on average (26,000-year period of precession / 12 zodiac signs = 2,160 years).