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Subdivision of the Cretaceous according to the ICS, as of 2023. [1] ... Millions of years ago. References This page was last edited on 16 December ...
Subdivision of the Permian according to the ICS, as of 2023. [1] Vertical axis scale: Millions of years ago. References This page was last edited on 16 December ...
In addition to publishing paper and document (PDF) versions of the International Stratigraphic Chart, the ICS also provides a machine-readable version of the chart formulated using the Web Ontology Language (OWL) and, in particular, Time Ontology in OWL. The ICS' chart web page also provides an interactive version of the chart, based on the OWL ...
Subdivision of the Phanerozoic according to the ICS, as of 2023. [1] Vertical axis scale: Millions of years ago. Template documentation. Phanerozoic eon divisions ...
Archived from the original on 2023-11-30. "GSSPs and Continental drift 3D views". ghkclass.net. Archived from the original on 2023-12-08. "Geotime chart displaying geologic time periods compared to the fossil record – Deals with chronology and classifications for laymen (not GSSPs)". rocksandminerals.com. Archived from the original on 2023-12-07.
In chronostratigraphy, a stage is a succession of rock strata laid down in a single age on the geologic timescale, which usually represents millions of years of deposition.A given stage of rock and the corresponding age of time will by convention have the same name, and the same boundaries.
The geologic time scale is a way of representing deep time based on events that have occurred throughout Earth's history, a time span of about 4.54 ± 0.05 Ga (4.54 billion years). [3]
The Kasimovian is a geochronologic age or chronostratigraphic stage in the ICS geologic timescale.It is the third stage in the Pennsylvanian (late Carboniferous), lasting from 307 to 303.7 Ma. [3]