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Chronostratigraphy is the branch of stratigraphy that studies the ages of rock strata in relation to time. The ultimate aim of chronostratigraphy is to arrange the sequence of deposition and the time of deposition of all rocks within a geological region, and eventually, the entire geologic record of the Earth .
Chronostratigraphy is the branch of stratigraphy that places an absolute age, rather than a relative age on rock strata. The branch is concerned with deriving geochronological data for rock units, both directly and inferentially, so that a sequence of time-relative events that created the rocks formation can be derived. The ultimate aim of ...
Chronostratigraphy is the element of stratigraphy that deals with the relation between rock bodies and the relative measurement of geological time. [14] It is the process where distinct strata between defined stratigraphic horizons are assigned to represent a relative interval of geologic time.
The associated period is a chronological time unit, a part of the geological time scale, while the system is a unit of chronostratigraphy. Systems are unrelated to lithostratigraphy, which subdivides rock layers on their lithology. Systems are subdivisions of erathems and are themselves divided into series and stages.
The science of geochronology is the prime tool used in the discipline of chronostratigraphy, which attempts to derive absolute age dates for all fossil assemblages and determine the geologic history of the Earth and extraterrestrial bodies.
In the stratigraphy sub-discipline of geology, a Global Standard Stratigraphic Age, abbreviated GSSA, is a chronological reference point and criterion in the geologic record used to define the boundaries (an internationally sanctioned benchmark point) between different geological periods, epochs or ages on the overall geologic time scale in a chronostratigraphically useful rock layer.
Mark Kistler's Imagination Station is a public television series where artist Mark Kistler taught children and adults to draw using techniques such as perspective and shading. The program was originally presented by TV station KIXE in the Redding and Chico areas of the U.S. state of California .
The measurement of geologic time is a long-standing problem of geology. [1] When geology was at its beginnings, a major problem for stratigraphers was to find a reliable method for the measurement of time.