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The geologic time scale or geological time scale (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochronology (a scientific branch of geology that aims to determine the age of rocks).
13 wrz 2024 · Geologic time, the extensive interval of time occupied by the geologic history of Earth. Formal geologic time begins with the Archean Eon (4.0 billion to 2.5 billion years ago) and continues to the present day. Modern geologic time scales also include the Hadean Eon (4.6 billion to 4.0 billion years ago).
6 gru 2023 · The Geologic Time Scale is a standardized system for organizing the history of the Earth into specific time intervals, while the Geologic Column is a representation of the vertical sequence of rock layers that make up the Earth’s crust.
Interactive Geological Timescale. This visualisation of the International Commission on Stratigraphy 's Chronostratigraphic Chart uses the SKOS & Time Ontology in OWL representation of it as the Geological Timescale (2020) for its data.
Today, the geologic time scale is divided into major chunks of time called eons. Eons may be further divided into smaller chunks called eras, and each era is divided into periods . Figure 12.1 shows you what the geologic time scale looks like.
11 kwi 2024 · The geological time scale provides a global summary of countless small-scale temporal correlations of rock layers made at local and regional scales. It is based almost entirely upon careful observations of the distributions of fossils in time and space.
The BGS geological timechart is based on The Geologic Time Scale 2012. BGS © UKRI. Cenozoic Era. In the Palaeogene Period, Britain had a very warm climate, but it gradually cooled as Britain drifted northwards. By the Quaternary, glaciers covered the middle and north of Britain, shaping the landscape we see today.
