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Topic: Rhyacian

Related Topics

Tonian

Ediacaran

Geologic time scale

Mesoproterozoic

Paleoproterozoic

Pleistocene

	Rhyacian - Palaeos (Site not responding. Last check: 2007-11-02)
		The Rhyacian (from Greek ῥυαξ, (rhyax), "stream of lava") is the second geologic period in the Paleoproterozoic Era and lasted from 2300 Ma to 2050 Ma (million years ago).
		Huronian glaciation period ended in late Rhyacian 2100 Ma.
		This page was last modified 08:38, 14 October 2006.
	www.palaeos.org /Rhyacian (87 words)

	Siderian - Palaeos (Site not responding. Last check: 2007-11-02)
		Eventually, without an oxygen sink in the oceans, the process created the oxygen-rich atmosphere of today.
		Huronian glaciation began in the Siderian 2400 Ma and ended in the late Rhyacian 2100 Ma.
		This page was last modified 08:39, 14 October 2006.
	www.palaeos.org /Siderian (137 words)

	Pharyngula: Age of the Earth
		Also, the Ediacaran is the most recently fully approved one, but there are a whole passle of new Periods in the works.
		From oldest to youngest, they are: (for the Paleoproterozoic Era) Siderian, Rhyacian, Orosirian, Statherian; (for the Mesoproterozoic Era) Calymmian, Ectasian, Stenian; (for Neoproterozoic Era) Tonian, Cryogenian, Ediacaran.
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	scienceblogs.com /pharyngula/2006/07/age_of_the_earth.php (2739 words)

	Rhyaciano (Site not responding. Last check: 2007-11-02)
		en : Rhyacian it : Rhyaciano pt : Rhyaciano sh : Rhyacij zh :.
		Facts, Information, and Encyclopedia Reference article Rhyacian -
		Siderian, Rhyacian, Calymmian, Ectasian, Stenian, Tonian, Orosirian, Statherian, Ediacaran.
	rhyacianoacfw.exhukixe.info (412 words)

	Geological Society - Teaching Resources - Mnemomania (Site not responding. Last check: 2007-11-02)
		Thomas Holtz (University of Maryland) has created the following mnemonic for the proposed new Proterozoic Periods:
		For: Siderian Rhyacian Orosirian Statherian (Paleoproterozoic); Calymminian Ectasian Stennian (Mesoproterozoic); Tonian Cryogenian Ediacaran (Neoproterozoic).
		Phil Plummer CGeol writes: "During my university days (a quarter of a century ago!) the following mnemonic was used for the mineral hardness scale: The Gem Cutters From Adelaide Must Queue To Cut Diamonds, the minerals, of course, being Talc, Gypsum, Calcite, Fluorite, Apatite, Microcline, Quartz, Topaz, Corundum, Diamond."
	www.geolsoc.org.uk /template.cfm?name=Mnemonics (1169 words)

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