Mark D. Barton

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NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information,(More)
Shirley P. Dutton is a senior research scientist at the Bureau of Economic Geology with research interests in sedimentology, reservoir characterization , sedimentary petrology, and clastic dia-genesis. She received a B.A. degree from the University of Rochester and an M.A. degree and Ph.D. from the University of Texas at Austin, all in geology. William A.(More)
The Eureka district hosts mid-Cretaceous (~106 Ma), igneous-related, polyme-tallic carbonate replacement deposits that have subsequently been overprinted by Eocene(?) Carlin-type gold mineralization, including the Archimedes deposit. This study presents (1) results of new Anaconda-style outcrop geologic map of a structurally complex area measuring 4.5 km 2(More)
In recent years there has been considerable interest in the possibility of improving healthcare by using ideas from manufacturing and engineering, such as lean thinking. In this paper we describe a lean systems framework for healthcare improvement, where we propose to discover high-level patient pathways using a Markov phase-type model that employs readily(More)
This study assessed the relationship of non-injected illicit drug use and infectious disease seropositivity for human immunodeficiency virus (HIV-1), hepatitis B virus (HBV), hepatitis C virus (HCV), and Syphilis. In a retrospective review of 986 donor charts recovered from 2009 to 2011 at a single tissue bank, the absence of reported non-injected illicit(More)
Carbonate ores of cobalt are a significant but under-recognized fraction of the global Co resource. Cobalt forms spherocobaltite (CoCO 3 , calcite group), whose complete solid solution with isostructural magnesite, MgCO 3 , is described here for the first time. Cobalt-rich dolomite, Ca(Mg,Co)(CO 3) 2 , and Co-rich calcite, (Ca,Co)CO 3 , can accommodate up(More)
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