Synonyms for argon_argon or Related words with argon_argon

radiometric_dating              potassium_argon_dating              argon_argon_dating              radiocarbon              uranium_thorium_dating              potassium_argon              geochronology              zircons              isotope_ratios              isotopic              radiometric_dates              oxygen_isotope              rubidium_strontium              cosmogenic              radiocarbon_dating              luminescence_dating              optically_stimulated_luminescence              geochemical_analyses              palaeomagnetic              radiometric_ages              isochron              detrital_zircon              detrital_zircons              authigenic              radiocarbon_dates              petrographic              chamosite              optically_stimulated_luminescence_osl              optically_stimulated_luminescence_dating              microfossils              carbonate_rocks              zircon_crystals              radiometric              isotope_geochemistry              palaeomagnetism              kaiparowits_formation              komatiite              carbonatites              pb_zircon              microfossil              zircon              biostratigraphy              geologic_occurrence              oxygen_isotope_ratios              isotopic_composition              isotopic_ratios              coffinite              melilite              isochron_dating              palynomorphs             



Examples of "argon_argon"
In earth sciences and archaeology, feldspars are used for K-Ar dating, argon-argon dating, and luminescence dating.
Since the early years of the twentieth century, absolute dating methods, such as radiometric dating (including potassium/argon, argon/argon, uranium series, and, for very recent fossils, radiocarbon dating) have been used to verify the relative ages obtained by fossils and to provide absolute ages for many fossils. Radiometric dating has shown that the earliest known stromatolites are over 3.4 billion years old.
Penning mixtures with the formulas of argon-xenon, neon-argon, argon-acetylene, and xenon-TMA are used as filler gases in gaseous ionization detectors.
Common isotopic systems used for thermochronology include fission track dating in zircon and apatite, potassium-argon and argon-argon dating in apatite, uranium-thorium-helium dating in zircon and apatite, and He/He dating.
Analysis of argonargon dating studies indicate that Davidson formed between 9 and 15 million years ago, 5 to 12 million years after the formation of the overlaying oceanic crust.
The northern young lava flow is less than one million years old based on potassium-argon dating, the southern flow is 48,000 ± 12,000 years old based on argon-argon dating on biotite.
Paleomagnetic studies are combined with geochronological methods to determine absolute ages for rocks in which the magnetic record is preserved. For igneous rocks such as basalt, commonly used methods include potassium–argon and argonargon geochronology.
Fieldwork at Hadar was suspended in the winter of 1976–77. When it was resumed thirteen years later in 1990, the more precise argon-argon technology had been updated by Derek York at the University of Toronto. By 1992 Aronson and Robert Walter had found two suitable samples of volcanic ash the older layer of ash was about 18 m below the fossil and the younger layer was only one meter below, closely marking the age of deposition of the specimen. These samples were argon-argon dated by Walter in the geochronology laboratory of the Institute of Human Origins at 3.22 and 3.18 million years.
It is in diameter and its age was determined to be 227.8 ± 1.1 million years (Carnian stage of the Triassic) using the argon-argon dating technique. The crater is well preserved but poorly exposed at the surface as the whole region is covered by glacial drift.
Three different stages of ignimbritic volcanism have been delineated by argon-argon dating. The first and oldest occurred 8.4 million years ago and formed the rhyolitic tuffs. The second 6.8 million years ago also formed a rhyolitic tuff and originated from the Condoriri caldera. The third 6.4 million years ago originated from the Tankha Tankha caldera.
The age of the volcano is equivocal; Oligocene ages of 30±3 mya are found but one biotite was dated by Argon-argon dating to be about 7 mya old. Both dates come from lava flows; the older date would make this volcano one of the oldest in the area. Toconquis group ignimbrites crop out next to the Ratones edifice.
The terrain around Llullaillaco consists of andesite and dacite lavas and pyroclastics of Miocene to Pliocene age. Some Oligocene-Miocene layers are exposed in the Quebrada de las Zorritas. Dates obtained by argon-argon dating range between 11.94 ± 0.13 and 5.48 ± 0.07 million years ago. west of Llullaillaco do Paleozoic granites and volcanites crop out. Elsewhere these layers are buried by Cenozoic rocks.
The age for the Okanagan Highland locations is, in general, Early Eocene, with the sites that have current uranium-lead or argonargon radiometric dates being of Ypresian age, while the undated sites or those given older dates being possibly slightly younger and Lutetian in age.
Argonargon dating of volcanic ash overlying ochre fragments found there has dated what may represent some of the earliest human aesthetic sensibility to 285,000 years ago. The ochre fragments must have been brought to the site by human agency and may have been used as body adornment.
Ages for the Okanagan Highland locations are, in general, Early Eocene, with the sites that have current uranium-lead or argonargon radiometric dates being of Ypresian age, while the undated sites or those given older dates being possibly slightly younger and Lutetian in age.
In a 2013 paper, Paul Renne of the Berkeley Geochronology Center reported that the date of the asteroid event is million years ago, based on argonargon dating. He further posits that the mass extinction occurred within 32,000 years of this date.
The Puripica Chico ignimbrite is known for having formed the Piedras de Dali hoodoos, named like that by tourists because of their surreal landscape. It has a volume of and it was apparently erupted at the hinge of the Guacha caldera. It has been argon-argon dated at 1.72±0.01 mya, making it the youngest Guacha caldera volcanite.
This technique allows the errors involved in K-Ar dating to be checked. Argonargon dating has the advantage of not requiring determinations of potassium. Modern methods of analysis allow individual regions of crystals to be investigated. This method is important as it allows crystals forming and cooling during different events to be identified.
Ages for the Okanagan Highland locations are, in general, Early Eocene, with the sites that have current uranium-lead or argonargon radiometric dates being of Ypresian age, while the undated sites or those given older dates being possibly slightly younger and Lutetian in age.
There are various estimates of the age of the crater. Earlier thermoluminescence analyses gave a result of 52,000 years, while recent Argon-argon dating suggests that the crater is much older; it could be 570 000 ± 47 000 years old. This greater age is in line with the degree of erosion processes of crater rims.