Radiogenic, nucleogenic and fissiogenic noble gas compositions in early Archaean magmatic zircons from Greenland

Date

2004

Authors

Honda, Masahiko
Nutman, Allen
Bennett, Victoria
Yatsevich, Igor

Journal Title

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Publisher

Geochemical Society of Japan

Abstract

We report a full suite of radiogenic, nucleogenic and fissiogenic noble gas compositions obtained by step-heating experiments from early Archaean Greenland zircons. We estimated activation energy (Ea) of diffusion and closure temperatures (Tc) for radiogenic 4He* and fissiogenic 86Kr* and 136Xe* in zircons. These data demonstrate that the combined study of (U-Th)/He and (U-Th)/Kr-Xe can provide powerful geochronological information on cooling ages and crystallization ages from the same samples.

Description

Keywords

Keywords: Archean; closure temperature; geochemistry; noble gas; radionuclide; zircon; Arctic; Greenland Closure temperature; Diffuson; Early Archaean; Noble gas; Zircon

Citation

Source

Geochemical Journal

Type

Journal article

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DOI

Restricted until

2037-12-31