The Tonian (from Greektonas, "stretch") is the first geologicperiod in the NeoproterozoicEra and lasted from 1000 Ma to 850 Ma (million years ago). Instead of being based on stratigraphy, these dates are defined by the ICS based on radiometric chronometry. Geology (from Greek γη- (ge-, the earth) and λογος (logos, word, reason)) is the science and study of the Earth, its composition, structure, physical properties, history, and the processes that shape it. ... In geology, a period or age is a time span of many millions of years that are assumed to have had similar characteristics. ... The Neoproterozoic is the geological era from 1000 Ma to 542 Ma (million years ago). ... A geologic era is a subdivision of geologic time that is a separate classification that divides the Phanerozoic Eon into three parts timeframes. ... Annum is a Latin noun meaning year. ... Stratigraphy, a branch of geology, is basically the study of rock layers and layering (stratification). ... The International Commission on Stratigraphy concerns itself with stratigraphy on a global scale. ... Radiometric dating is a technique used to date materials based on a knowledge of the decay rates of naturally occurring isotopes, and the current abundances. ...
Events leading to the breakup of supercontinentRodinia started in this period. In geology, a supercontinent is a land mass comprising more than one continental core, or craton. ... Depiction of Rodinia at time of initial breakup. ...
The first radiation of acritarchs occurred during the Tonian. Acritarchs are small organic structures found as fossils. ...
Categories: Geology stubs | Proterozoic January 5 is the 5th day of the year in the Gregorian calendar. ... 2006 (MMVI) is a common year starting on Sunday of the Gregorian calendar. ... In geology, the Proterozoic is an eon before the first abundant complex life on Earth. ... The Paleoproterozoic is the first of the three sub-divisions of the Proterozoic occurring between 2500 to 1600 million years ago. ... The Mesoproterozoic era is a geologic period that occurred between 1600 and 900 million years ago. ... The Neoproterozoic is the geological era from 1000 Ma to 542 Ma (million years ago). ... The Siderian (from Greek sideros, iron) is the first geologic period in the Paleoproterozoic Era and lasted from 2500 million years ago to 2300 million years ago. ... From the GeoWhen Database: Rhyacian Period From 2300 +/- 0 To 2050 +/- 0 Ma Start Defined By: Fixed Date End Defined By: Fixed Date Start Based On: Gradstein, Ogg, Smith, et. ... The Orosirian (from Greek orosira, mountain range) is the third geologic period in the Paleoproterozoic Era and lasted from 2050 million years ago to 1800 million years ago. ... The Statherian (from Greek statheros, stable, firm) is the final geologic period in the Paleoproterozoic Era and lasted from 1800 million years ago to 1600 million years ago. ... The Calymmian (from Greek calymma, cover) is the first geologic period in the Mesoproterozoic Era and lasted from 1600 million years ago to 1400 million years ago. ... The Ectasian (from Greek ectsis, extension) is the second geologic period in the Mesoproterozoic Era and lasted from 1400 million years ago to 1200 million years ago. ... The Stenian (from Greek stenos, narrow) is the final geologic period in the Mesoproterozoic Era and lasted from 1200 million years ago to 1000 million years ago. ... The Cryogenian Period (from Greek cryos ice and genesis birth) is the second geologic period of the Neoproterozoic Era, followed by the Ediacaran Period. ... The Ediacaran Period is the last geological period of the Neoproterozoic Era, just before the Cambrian. ...
Tonian Labs' Tony Minasian is of the opinion that there's nothing mystical or supernatural about super tweeters.
The Tonian Labs TL-R1 is essentially half of the TL-R2 that Michael Lavorgna reviewed in May. Where the R2 used a 5" pure ribbon tweeter, the R1 uses a 2.5-inch ribbon of the same design.
When using the resistor to attenuate the Tonian's tweeter, you connect the amplifier to the bottom dummy post and then use the resister to bridge across to the upper post, thereby completing the connection.
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