IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Tonian

Hierarchy:Precambrian Proterozoic  Neoproterozoic
   Tonian
Classification:Period (as per International Commission on Stratigraphy)
Top:720 Ma
Base:1000 Ma
Preceeds:Cryogenian
Follows:Mesoproterozoic Stenian
GSSP:Defined chronometrically
Rodinia supercontinent persists. Trace fossils of simple multi-celled eukaryotes. First radiation of dinoflagellate-like acritarchs. Grenville Orogeny tapers off in North America. Pan-African orogeny in Africa. Lake Ruker / Nimrod Orogeny in Antarctica, 1000 ± 150 Ma. Edmundian Orogeny (c. 920 – 850 Ma),Gascoyne Complex, Western Australia. Adelaide Geosyncline laid down on Australian continent, beginning of Adelaide Geosyncline (Delamerian Orogeny) in that continent.
 

Geologic Events

Event NameTypeAgeArea
Rodinia breakup (begins)Continental Breakup750 - 633 MaGlobal
Pannotia supercontinent (begins)Supercontinent750 - 530 MaGlobal
Pan-African orogeny (concludes)Orogeny~870 - ~550 MaAfrica
Zambezi Belt orogeny (early) (concludes)Orogeny~890 - ~880 MaZambia and Zimbabwe
Late Ruker / Nimrod orogenyOrogeny1000 ± 150 MaAntarctica
Grenville orogeny (concludes)Orogeny1250 - 980 MaNorthern America, Scotland
Sveconorwegian orogeny (concludes)Orogeny~1250 - ~900 MaEurope
Rodinia assembly (concludes)Continental Assembly~1300 - ~900 MaGlobal
Kibaran orogeny (concludes)Orogeny1400 - 1000 MaMid to Southern Africa
Great Oxygenation Event (concludes)Major Climatic Event~3500 - ~850 MaGlobal


Overview of geological time

List all geological events
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: September 22, 2018 08:09:48
Go to top of page