Crossword clues for precambrian
Douglas Harper's Etymology Dictionary
also Pre-Cambrian, 1861, from pre- + Cambrian.
Wikipedia
The Precambrian or Pre-Cambrian, sometimes abbreviated pЄ, is the largest span of time in Earth's history before the current Phanerozoic Eon, and is a supereon divided into several eons of the geologic time scale. It spans from the formation of Earth about 4.6 billion years ago ( Ga) to the beginning of the Cambrian Period, about million years ago ( Ma), when hard-shelled creatures first appeared in abundance. The Precambrian is so named because it preceded the Cambrian, the first period of the Phanerozoic Eon, which is named after Cambria, the classical name for Wales, where rocks from this age were first studied. The Precambrian accounts for 88% of geologic time.
Precambrian is the third studio album by the German metal band The Ocean, released on November 5, 2007 through Metal Blade Records. It features several guest musicians, including Caleb Scofield ( Cave In, Zozobra, Old Man Gloom), Nate Newton ( Converge, Doomriders), Dwid Hellion ( Integrity), Tomas Hallbom ( Breach), Erik Kalsbeek ( Textures) and musicians from the Berlin Philharmonic Orchestra.
Usage examples of "precambrian".
Others divide the Precambrian into two eras, the very ancient Archean and the more recent Proterozoic.
The chamber was typical of Hebridean sea-caves, a simple excavation in Precambrian gritstone accomplished by wave action, having no stalactites or other picturesque features.
The National Research Council of Canada operated a forty-six-meter radio telescope at Lake Traverse in Algonquin Park, a huge area of untamed forest and Precambrian shield in northern Ontario.