geochronological , also: geochronologic

Recent geochronological dates suggest that the age of the impact event lies in the range between 1.6 and 2.5 Ga.

The geochronological data document a long and complicated evolution of the belt:

Data from the geochronological analysis of amino acid racemization has been building for thirty-five years.

Like other geochronological divisions, epochs are normally separated by significant changes in the rock layers they correspond to.

Potassium is common in rocks and minerals, allowing many samples of geochronological or archeological interest to be dated.

Geochronological units are periods of time and take the same name as standard stratigraphic units but replacing the terms upper/lower with late/early.

Paleomagnetic studies are combined with geochronological methods to determine absolute ages for rocks in which the magnetic record is preserved.

Collection of samples for petrological, geochronological, geochemical, palaeontological, sedimentological and palaeomagnetic studies.

Geochronological synthesis and time-space plots for Proterozoic Australia.

Surface exposure dating is a collection of geochronological techniques for estimating the length of time that a rock has been exposed at or near Earth's surface.

Geochronological units are periods of time, thus it is correct to say that Tyrannosaurus rex lived during the Late Cretaceous Epoch.

The geochronological scale takes the Precambrian-Cambrian boundary at 540Myr ago and the Ediacaran faunas as 580-560Myr ago.

Argon, being a noble gas, is a minor component of most rock samples of geochronological interest: it does not bind with other atoms in a crystal lattice.

The Riphean geochronological period was also named after the Riphean Mountains, referring to the Ural Mountains.

No clear geochronological data exist for CIDs, as no radioisotope methods are applicable to directly date CID deposits.

Augmented and reassessed U-Pb geochronological data from the Labradorian-Grenvillian front in the Smokey archipelago, eastern Labrador.

Graduate studies use neutron beams for neutron radiography, neutron diffraction, prompt gamma NAA and geochronological techniques.

They are commonly younger than the volcanic rocks with local unconformable relationships and geochronological constraints indicating deposition between ca. 2.711 and 3 Ga indicate old components in source regions.

Kuna Crest Granodiorite - quartz diorite and granodiorite This magmatic sequence shows the following geochronological and geochemical trends:

Basement framework and geodynamic evolution of the Palaeoproterozoic superbasins of north-central Australia: an integrated review of geochemical, geochronological and geophysical data.

The corresponding geologic time (geochronological) units of the two Hesperian series are the Early Hesperian and Late Hesperian Epochs.

The branch is based upon deriving geochronological data for rock units, both directly and inferentially, so that a sequence of time-relative events of rocks within a region can be derived.

Tephrochronology is a geochronological technique that uses discrete layers of tephra-volcanic ash from a single eruption-to create a chronological framework in which paleoenvironmental or archaeological records can be placed.

The Early Cretaceous (geochronological name) or the Lower Cretaceous (chronostratigraphic name), is the earlier or lower of the two major divisions of the Cretaceous.

The Late Pleistocene is a geochronological age of the Pleistocene Epoch and is associated with Upper Pleistocene or Tarantian stage Pleistocene series rocks.