Intercalibration of standards, absolute ages and uncertainties in 40Ar/39Ar dating

  title={Intercalibration of standards, absolute ages and uncertainties in 40Ar/39Ar dating},
  author={Paul R. Renne and Carl C. Swisher and Alan L. Deino and Daniel B. Karner and Thomas L. Owens and Donald J. DePaolo},
  journal={Chemical Geology},

A metrological approach to measuring 40Ar* concentrations in K‐Ar and 40Ar/39Ar mineral standards

In geochronology, isotopic ages are determined from the ratio of parent and daughter nuclide concentrations in minerals. For dating of geological material using the K‐Ar system, the simultaneous

Intercalibration of international and domestic 40 Ar/ 39 Ar dating standards

Four international standards, Ga1550, MMhb-1, Lp-6, Bem 4M, and one domestic standard BT-1 have been intercalibrated. The repeated measurements on MMhb-1 with different mass demonstrate that MMhb-1

Perspectives on 40Ar/39Ar dating

Abstract Isotopic dating of geological samples using the K/Ar method and its variant, the 40Ar/39Ar dating technique, provides ages that in favourable circumstances are precise and accurate to within



Intercalibration of astronomical and radioisotopic time

The 40Ar/39Ar radioisotopic dating technique is one of the most precise and versatile methods available for dating events in Earth's history, but the accuracy of this method is limited by the

Direct comparison of astronomical and 40Ar/39Ar ages of ash beds: Potential implications for the age of mineral dating standards

We present first results of 40Ar/39Ar multiple single fusion datings on biotites and feldspars from two volcanic ash beds found on Crete, Gavdos and Koufonisi (Greece). Preferred 40Ar/39Ar

Total fusion 40Ar/39Ar ages using Hifar reactor

Abstract Total fusion 40Ar/39Ar ages have been determined on 22 samples, including biotite, muscovite, sanidine, hornblende, plagioclase, pyroxene, and whole rock samples of volcanics. The samples

Incremental heating of hornblende in vacuo: implications for 40Ar/ 39Ar geochronology and the interpretation of thermal histories

Increasing evidence of the incompatibility between the geologic thermal histories deduced from the {sup 40}Ar/{sup 39}Ar incremental-heating technique and those derived form other methods have

A radiometric age for the Cretaceous-Tertiary boundary based upon K-Ar, Rb-Sr, and U-Pb ages of bentonites from Alberta, Saskatchewan, and Montana

Bentonites associated with coal seams at the North American Cretaceous–Tertiary (K–T) boundary in the Red Deer Valley of Alberta, in the Frenchman Valley of Saskatchewan, and near Hell Creek,

40Ar/39Ar geochronology of Roman volcanic province tephra in the Tiber River valley: Age calibration of middle Pleistocene sea-level changes

The close proximity of the Roman volcanic province to the Tyrrhenian Sea coastline provides a unique opportunity to combine clastic stratigraphy with 40 Ar/ 39 Ar geochronology to constrain the