Open Access Articles- Top Results for Tonian
Journal of Applied Mechanical EngineeringPeriodic Solution for Vibration of Euler-Bernoulli Beams Subjected to Axial Load Using DTM and HA
Journal of Physical MathematicsNewtons laws for a biquaternionic model of the electro-gravimagnetic eld, charges, currents, and their interactions
Journal of Physical MathematicsModels of damped oscillators in quantum mechanics
Journal of Food Processing & TechnologyPhysicochemical and Rheological Behavior of African Star Apple Chrysophyllum Albidium) Juice as Affected by Concentration and Temperature Variation
Journal of Proteomics & BioinformaticsDNA Computation: Applications and Perspectives
|This article appears to contradict the articles Rodinia and Stenian.|
1000–850 million years ago
The Tonian (from Greek tonas, "stretch") is the first geologic period in the Neoproterozoic Era and lasted from 1000 Mya to 850 Mya (million years ago). Instead of being based on stratigraphy, these dates are defined by the ICS based on radiometric chronometry.
The first radiation of acritarchs occurred during the Tonian.
- "Tonian Period". GeoWhen Database. Archived from the original on May 12, 2006. Retrieved January 5, 2006.
- James G. Ogg (2004). "Status on Divisions of the International Geologic Time Scale". Lethaia 37 (2): 183–199. doi:10.1080/00241160410006492.
|Preceded by Archean Eon||Proterozoic Eon||Followed by Phanerozoic Eon|
|Paleoproterozoic Era||Mesoproterozoic Era||Neoproterozoic Era|