Apparent K---Ar dates on cores and excess Ar in flanges of australites

Details Apparent K---Ar dates on cores and excess Ar in flanges of australites Apparent K---Ar dates on cores and excess Ar in flanges of australites

Sep 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969gecoa..33.1057m&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 33, Issue 9, pp.1057-1070

Mathematics

Logic

11

Scientific paper

Potassium and radiogenic argon contents have been measured on 13 australite cores from widely separated regions in Australia. The apparent K-Ar dates average 0.86 ± 0.06 m.y. (standard deviation), approximately 0.15 m.y. older than found by previous workers. The internal consistency of the K-Ar dates on the australite cores, which have potassium contents ranging from 1.61 to 2.18 per cent, suggests that the dates are geologically meaningful, and probably record the time of primary melting. Studies of flanged australites confirm that potassium is depleted in the flanges relative to the associated cores, and show that the flanges have considerably older apparent K-Ar dates than the cores. Because it is agreed that the flanges were formed by subsequent ablation of the primary australite cores, it must be concluded that the flanges contain excess radiogenic argon.

Affiliated with

Also associated with

No associations

Rating

Apparent K---Ar dates on cores and excess Ar in flanges of australites does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Apparent K---Ar dates on cores and excess Ar in flanges of australites, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparent K---Ar dates on cores and excess Ar in flanges of australites will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1426173