Oligocene: The Oligocene epoch is a division of the geologic time scale and the third and final epoch of the Paleogene period. It extends from about 34 million to 23 million years before the present. The Oligocene follows the Eocene epoch ... [100%] 2023-02-04
Oligocene: The Oligocene (IPA: /ˈɒlɪɡəsiːn, -ɡoʊ-/ OL-ə-gə-seen, -goh-) is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present (33.9±0.1 to 23.03±0.05 Ma). As ... (Earth) [100%] 2023-12-30 [Oligocene] [Paleogene geochronology]...
Oligocene: The Oligocene is a theorized geologic period that those who hold an old earth view believe extended from 34 to 23 million years ago. Young earth creationist scientist state that there are numerous lines of evidence pointing to a young ... [100%] 2023-03-04 [Geologic Systems]
Geochronology: Geochronology is the science of determining the absolute ages of rocks, fossils, and sediments found on Earth. This field of science relies on a variety of dating methods, including those that are classified under the larger groupings of radiometric dating ... [96%] 2023-02-04
Geochronology: Geochronology is the science of determining the age of rocks, fossils, and sediments using signatures inherent in the rocks themselves. Absolute geochronology can be accomplished through radioactive isotopes, whereas relative geochronology is provided by tools such as paleomagnetism and stable ... (Science of determining the age of rocks, sediments and fossils) [96%] 2024-01-06 [Geochronology] [Radiometric dating]...
Geochronology: Geochronology is the branch of stratigraphy aimed at determining and dating the time sequence of events in the Earth's history. Geochronology deals thus with geologic time, in opposition to chronostratigraphy which rather deals with rock bodies. [96%] 2023-07-03
Geochronology: Geochronology is the science of determining the age of rocks, fossils, and sediments, using signatures inherent in the rocks themselves. Def. [96%] 2023-12-25 [Geology resources] [Geochronology]...
Geochronology: Geochronology is the science of determining the age of rocks, fossils, and sediments using signatures inherent in the rocks themselves. Absolute geochronology can be accomplished through radioactive isotopes, whereas relative geochronology is provided by tools such as paleomagnetism and stable ... (Physics) [96%] 2023-11-12 [Geochronology] [Radiometric dating]...
Gyrochronology: Gyrochronology is a method for estimating the age of a low-mass (cool) main sequence star (spectral class F8 V or later) from its rotation period. The term is derived from the Greek words gyros, chronos and logos, roughly translated ... (Astronomy) [81%] 2023-11-12 [Space science]
Gyrochronology: Liberal astronomers have searched for ways to accurately determine the age of a star in keeping with their cosmology. A new technique called gyrochronology, which works this out based on the star’s rate of rotation, has just been announced ... [81%] 2023-03-17 [Astronomy]
Gyrochronology: Gyrochronology is a method for estimating the age of a low-mass (cool) main sequence star (spectral class F8 V or later) from its rotation period. The term is derived from the Greek words gyros, chronos and logos, roughly translated ... [81%] 2023-12-20 [Space science]
Geochronologie: Geochronologie (von altgriechisch γῆ ge, deutsch ‚Erde‘ und χρὁνος chronos, deutsch ‚Zeit‘, ‚Zeitdauer‘ und -logie) ist die Wissenschaftsdisziplin, die Ereignisse der Erdgeschichte und sekundär die Entstehungszeit von Gesteinen und Sedimenten (siehe Chronostratigraphie) absolut-zeitlich datiert. Unter anderem erstellt sie aus den ermittelten ... [81%] 2025-07-04
Oligocene System: Oligocene System, in geology, the name given to the second division of the older Tertiary rocks, viz. those which occur above the Eocene and below the Miocene strata. These rocks were originally classed by Sir C. [70%] 2022-09-02
Monazite geochronology: Monazite geochronology is a dating technique to study geological history using the mineral monazite. It is a powerful tool in studying the complex history of metamorphic rocks particularly, as well as igneous, sedimentary and hydrothermal rocks. (Dating technique to study geological history using nuclear decay of the mineral monazite) [68%] 2023-12-20 [Geochronological dating methods]
Monazite geochronology: Monazite geochronology is a dating technique to study geological history using the mineral monazite. It is a powerful tool in studying the complex history of metamorphic rocks particularly, as well as igneous, sedimentary and hydrothermal rocks. (Earth) [68%] 2023-11-13 [Geochronological dating methods]
Detrital zircon geochronology: Detrital zircon geochronology is the science of analyzing the age of zircons deposited within a specific sedimentary unit by examining their inherent radioisotopes, most commonly the uranium–lead ratio. Zircon is a common accessory or trace mineral constituent of most ... (Earth) [55%] 2023-12-29 [Sediments] [Geochronological dating methods]...
Berkeley Geochronology Center: The Berkeley Geochronology Center (BGC) is a non-profit geochronology research institute in Berkeley, California. It was originally a research group in the laboratory of geochronologist Garniss Curtis at the University of California, Berkeley. (Physics) [55%] 2025-07-09 [Mass spectrometry]
Eocene–Oligocene extinction event: The Eocene–Oligocene extinction event, also called the Eocene-Oligocene transition or Grande Coupure, is the transition between the end of the Eocene and the beginning of the Oligocene, an extinction event and faunal turnover occurring between 33.9 and ... (Mass extinction event 33.9 million years ago) [50%] 2023-03-26 [Extinction events] [Eocene extinctions]...
Eoseen-Oligoseen-uitwissing: Die Eoseen-Oligoseen-uitwissing van 33,7 miloen jaar gelede is een van kleiner uitwissingsvoorvalle in die Aarde se geskiedenis. Dit is nogtans een van die grootste uitwissings van die weekdiere en ander ongewerweldes van die Senosoïkum. [44%] 2023-08-09
List of geochronologic names: This is a list of official and unofficial names for time spans in the geologic timescale and units of chronostratigraphy. Since many of the smallest subdivisions of the geologic timescale were in the past defined on regional lithostratigraphic units, there ... (none) [40%] 2023-11-12 [Geochronology] [Geologic time scales of Earth]...
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