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The chronology of the earth's history as determined by geologic events.

ge′o·chron′o·log′ic (-krŏn′ə-lŏj′ĭk), ge′o·chron′o·log′i·cal adj.
ge′o·chron′o·log′i·cal·ly adv.
ge′o·chro·nol′o·gist n.


(Geological Science) the branch of geology concerned with ordering and dating of events in the earth's history, including the origin of the earth itself
geochronological, geochronologic adj


(ˌdʒi oʊ krəˈnɒl ə dʒi)

the chronology of the earth, as based on both absolute and relative methods of age determination.
ge`o•chron`o•log′ic (-ˌkrɒn lˈɒdʒ ɪk) ge`o•chron`o•log′i•cal, adj.
ge`o•chro•nol′o•gist, n.


the branch of geology that describes the past in terms of geologic rather than human time. — geochronologist, n. — geochronologic, geochronological, adj.
See also: Earth
the chronology of the earth as induced from geologic data. — geochronologist, n.geochronologic, geochronological, adj.
See also: Time


earth's history
References in periodicals archive ?
2008), but new geochronological data suggest that granitoids of similar compositions were also emplaced into the Palaeoproterozoic crust much later, at ca 1620 Ma (Vejelyte 2012).
Geochronological and geochemical analyses to provenance the Sembiran and Pacung pottery assemblages are currently underway.
Geochronological analyses of detrital zircon grains in clastic sedimentary rocks offer important information about potential source regions for sedimentary basin fill.
We want to include it all within a more solid geochronological framework.
Future studies, possibly including isotopic and geochronological data, would shed more light on the evolutionary history of the metacarbonate deposit.
2, a consequence attributable to (1), the taxonomically coarse-grained nature of holometabolous lineages present during the Pennsylvanian; and (2), the geochronological stability of supraordinal ranks within the Holometabola that extend to the earliest Pennsylvanian.
The supposition has "quite independently found its expression in a new geochronological scale of Azerbaijan".
Fifth, the Pratt--Welker (or Bowie--Kodiak) seamount chain in the Gulf of Alaska is recognized to be partly of intraplate origin, and geochronological data from the chain were used to constrain the motion of the Pacific Plate in the hotspot reference frame (Turner et al.
Recently acquired geochronological and lithogeochemical data now provide strong evidence to show that these deposits were formed as part of a single magmatic event of regional extent which also was responsible for the formation of the McFauld's Lake VMS deposits and for the intrusion of similar ultramafic and mafic bodies around the entire extent of the Ring of Fire.
of Ulster) provides an exhaustive and current history of regional geological, geomorphological, and geochronological evidence used in ice sheet reconstruction.
Our report carefully applies accepted geochronological practices, discovers new evidence for rapid nuclear decay, points out inconsistencies in conventional interpretations, and calculates alternative, young-earth dates.