Laser fusion argon-40/argon-39 ages of Darwin impact glass
Resource
Meteoritics & Planetary Science 37: 1555-1562
Journal
Meteoritics and Planetary Science
Journal Volume
37
Journal Issue
11
Pages
1555-1562
Date Issued
2002
Author(s)
Abstract
Abstract— Three samples of Darwin Glass, an impact glass found in Tasmania, Australia at the edge of the Australasian tektite strewn field were dated using the 40 Ar/ 39 Ar single‐grain laser fusion technique, yielding isochron ages of 796–815 ka with an overall weighted mean of 816 ± 7 ka. These data are statistically indistinguishable from those recently reported for the Australasian tektites from Southeast Asia and Australia (761–816 ka; with a mean weighted age of 803 ± 3 ka). However, considering the compositional and textural differences and the disparity from the presumed impact crater area for Australasian tektites, Darwin Glass is more likely to have resulted from a distinct impact during the same period of time.
Type
journal article
File(s)![Thumbnail Image]()
Loading...
Name
19.pdf
Size
790.15 KB
Format
Adobe PDF
Checksum
(MD5):e8e4923e97e61898d0294c55dc018728