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Cryogenian
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The Cryogenian is a geologic period that lasted from 720 to 635 million years ago. It is the second of the three periods of the Neoproterozoic era, preceded by the Tonian and followed by the Ediacaran
Diamictite of the Elatina Formation in South Australia, formed during the Marinoan glaciation of the late Cryogenian
Diamictite of the Elatina Formation in South Australia, formed during the Marinoan glaciation of the late Cryogenian
Ediacaran
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The Ediacaran is a geological period of the Neoproterozoic Era that spans 96 million years from the end of the Cryogenian Period 635 million years ago to the beginning of the Cambrian Period 538.8 mil
Cryogenian
…lasted from 720 to 635 million years ago. It is the second of the three periods of the Neoproterozoic era, preceded by the Tonian and followed by the Ediacaran. The Cryogenian was a time of drastic climate changes. After the long environmental stability/stagnation during the Boring Billion, the Sturtian…
The 'golden spike' (bronze disk in the lower section of the image) or 'type section' of the Global Boundary Stratotype Section and Point (GSSP) for th
The 'golden spike' (bronze disk in the lower section of the image) or 'type section' of the Global Boundary Stratotype Section and Point (GSSP) for the base of the Ediacaran System
The 'golden spike' marking the GSSP
The 'golden spike' marking the GSSP
Outcrops of micaschists and marble of the Groupe de Canaveilles [fr] (Ediacaran, c. 580 Ma) in the eastern Pyrenees (commune of Fontpédrouse, France)
Outcrops of micaschists and marble of the Groupe de Canaveilles [fr] (Ediacaran, c. 580 Ma) in the eastern Pyrenees (commune of Fontpédrouse, France)
Groupe de Canaveilles exposure (Piton de Castell Vidre) in the eastern Pyrenees (commune of Llo, France). 1 - Very silicious schist. 2 - Marble. 3 - L
Groupe de Canaveilles exposure (Piton de Castell Vidre) in the eastern Pyrenees (commune of Llo, France). 1 - Very silicious schist. 2 - Marble. 3 - Limestone and dolomite. 4 (& inset) - "Barégiennes" (thin, deformed, alternating calcareous/siliceous beds).