Stenian in the context of "Tonian"

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⭐ Core Definition: Stenian

The Stenian Period (/ˈstiːni.ən/ STEE-nee-ən, from Ancient Greek: στενός, romanized: stenós, meaning "narrow") is the final geologic period in the Mesoproterozoic Era and lasted from 1200 Mya to 1000 Mya (million years ago). Instead of being based on stratigraphy, these dates are defined chronometrically. The name derives from narrow polymetamorphic belts formed over this period. It is preceded by the Ectasian Period and followed by the Neoproterozoic era and the Tonian period.

The supercontinent Rodinia assembled during the Stenian. It would last into the Tonian period before breaking up in the Cryogenian.

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👉 Stenian in the context of Tonian

The Tonian (from Ancient Greek: τόνος, romanized: tónos, meaning "stretch") is the first geologic period of the Neoproterozoic Era. It lasted from 1000 to 720 Mya (million years ago). Instead of being based on stratigraphy, these dates are defined by the ICS based on radiometric chronometry. The Tonian is preceded by the Stenian Period of the Mesoproterozoic Era and followed by the Cryogenian.

Rifting leading to the breakup of supercontinent Rodinia, which had formed in the mid-Stenian, occurred during this period, starting from 900 to 850 Mya.

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In this Dossier
LINKED FROM (PARENTS)
← Tonian
LINKS TO (CHILDREN)
Ancient Greek language → Romanization of Ancient Greek → Geologic period → Mesoproterozoic → Era (geology) → Annum → Stratigraphy → Absolute dating → Metamorphic rock → Ectasian → Neoproterozoic → Tonian → Supercontinent → Rodinia → Cryogenian →