AR-40 AR-39 DATING INTO THE HISTORICAL REALM - CALIBRATION AGAINST PLINY-THE-YOUNGER/

Authors
RENNE PR SHARP WD DEINO AL ORSI G CIVETTA L
Citation
Pr. Renne et al., AR-40 AR-39 DATING INTO THE HISTORICAL REALM - CALIBRATION AGAINST PLINY-THE-YOUNGER/, Science, 277(5330), 1997, pp. 1279-1280
Citations number
22
Categorie Soggetti
Multidisciplinary Sciences
Journal title
Science → ACNP
ISSN journal
00368075
Volume
277
Issue
5330
Year of publication
1997
Pages
1279 - 1280
Database
ISI
SICI code
0036-8075(1997)277:5330<1279:AADITH>2.0.ZU;2-1
Abstract
Laser incremental heating of sanidine from the pumice deposited by the Plinian eruption of Vesuvius in 79 A.D. yielded a Ar-40/Ar-39 isochro n age of 1925 +/- 94 years ago. Close agreement with the Gregorian cal endar-based age of 1918 years ago demonstrates that the Ar-40/Ar-39 me thod can be reliably extended into the temporal range of recorded hist ory. Excess Ar-40 is present in the sanidine in concentrations that wo uld cause significant errors if ignored in dating Holocene samples.