Tags Geologic time scale

Tag: Geologic time scale

Middle Triassic

In the geologic timescale, the Middle Triassic is the second of three epochs of the Triassic period or the middle of three series in...

Upper Triassic

The Late Triassic is in the geologic timescale the third and final of three epochs of the Triassic period. The corresponding series is known...

Triassic Period

The Triassic /traɪˈæsɪk/ is a geologic period and system that extends from about 250 to 200 Ma (252.2 ± 0.5 to 201.3 ± 0.2...

Permian Period

The Permian is a geologic period and system which extends from 298.9 ± 0.2 to 252.2 ± 0.5 (Million years ago). It is the...

Pennsylvanian Period

The Pennsylvanian is, in the ICS geologic timescale, the younger of two subperiods (or upper of two subsystems) of the Carboniferous Period. It lasted...

Carboniferous Period

The Carboniferous is a geologic period and system that extends from the end of the Devonian Period, about 358.9 ± 0.4 million years ago,...

Serpukhovian Epoch

The Serpukhovian is in the ICS geologic timescale the uppermost stage or youngest age of the Mississippian, the lower subsystem of the Carboniferous. The...

Viséan Epoch

The Visean, Viséan or Visian is an age in the ICS geologic timescale or a stage in the stratigraphic column. It is the second...

Tournaisian Epoch

The Tournaisian is in the ICS geologic timescale the lowest stage or oldest age of the Mississippian, the oldest subsystem of the Carboniferous. The...

Mississippian Period

The Mississippian is a subperiod in the geologic timescale or a subsystem of the geologic record. It is the earliest/lowermost of two subperiods of...

Devonian Period

The Devonian is a geologic period and system of the Paleozoic Era spanning from the end of the Silurian Period, about 419.2 ± 3.2...

Pridoli Epoch

Pridoli Series, uppermost of four main divisions of the Silurian System, representing those rocks deposited worldwide during the Pridoli Epoch (423 million to 419.2...

Ludlow Epoch

The Ludlow Group are rocks deposited during the Ludlow period of the Silurian in Great Britain. This group contains the following formations in descending...

Wenlock Epoch

The Wenlock (seldomly also referred to as Wenlockian) is the second series of the Silurian. It is preceded by the Llandovery series and followed...

Llandovery Epoch

In geology, the Llandovery Group refers to the lowest division of the Silurian period (Upper Silurian) in Britain. It is named after the town...

Silurian period

The Silurian is a geologic period and system that extends from the end of the Ordovician Period, about 443.4 ± 1.5 million years ago...

Ordovician period

The Ordovician /ɔrdəˈvɪʃən/ is a geologic period and system, the second of six of the Paleozoic Era, and covers the time between 485.4 ±...

Furongian

The Furongian is the fourth and final series of the Cambrian. It lasted from ~497 to 485.4 ± 1.9 million years ago. It succeeds...

Cambrian Series 3

Cambrian Series 3 is the still unnamed 3rd Series of the Cambrian. It lasted from about ~509 to ~497 million years ago and is...

Cambrian Series 2

Cambrian Series 2 is the unnamed 2nd series of the Cambrian. It lies above the Terreneuvian series and below the Cambrian Series 3. Series...

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