L. J. Toolin
University of Arizona
28 Papers
432 Citations
L. J. Toolin is an academic researcher from University of Arizona. The author has contributed to research in topics: Radiocarbon dating & Accelerator mass spectrometry. The author has an hindex of 19, co-authored 28 publications.
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Papers
Preparation of small samples for 14C accelerator targets by catalytic reduction of CO.
TL;DR: Jull et al. as discussed by the authors used an even simpler graphite preparation system, which eliminates hydrogen, where graphite forms away from the iron, by using a higher temperature, and reduction of CO2 to CO over Zn in the presence of H2.
Radiocarbon dating of the Shroud of Turin
Paul E. Damon,Douglas J. Donahue,B. H. Gore,A L Hatheway,A. J. T. Jull,T.W. Linick,P. J. Sercel,L. J. Toolin,C. R. Bronk,E. T. Hall,Robert E. M. Hedges,Rupert A. Housley,I. A. Law,Colin Perry,Georges Bonani,Susan E. Trumbore,W. Woelfli,J. C. Ambers,Sheridan Bowman,M. N. Leese,Michael S. Tite +20 more
TL;DR: Very small samples from the Shroud of Turin have been dated by accelerator mass spectrometry in laboratories at Arizona, Oxford and Zurich as discussed by the authors, and the results provide conclusive evidence that the linen of the Shroud is mediaeval.
Stable isotope evidence for chemosynthesis in an abyssal seep community
TL;DR: In this paper, the authors measured isotope ratios in tissues of organisms which surround these saline seeps to determine the origin of the local food chain and found that these animals contain significant amounts of 14C (∼60% modern), so the source of this fractionated carbon is not predominantly fossil methane.
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Low organic carbon accumulation rates in black sea sediments
Stephen E. Calvert,R. E. Karlin,L. J. Toolin,Douglas J. Donahue,John R. Southon,John R. Southon,John S. Vogel,John S. Vogel +7 more
TL;DR: In this article, the authors used radiocarbon ages obtained using accelerator mass spectrometry for the organic fraction of recent Black Sea sediments to estimate the organic carbon accumulation rates.
154
Old carbon in living organisms and young CaC03 cements from abyssal brine seeps
Charles K. Paull,Christopher S. Martens,Jeffrey P. Chanton,A. C. Neumann,Jennifer A. Coston,A. J. T. Jull,L. J. Toolin +6 more
TL;DR: This article reported that fossil methane is the dominant source of carbon found in living tissues and recent authigenic carbonate minerals associated with abyssal brine seeps at the base of the Florida Escarpment.
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