M
Mark A. Engle
Researcher at University of Texas at El Paso
Publications - 109
Citations - 3779
Mark A. Engle is an academic researcher from University of Texas at El Paso. The author has contributed to research in topics: Mercury (element) & Coal. The author has an hindex of 32, co-authored 95 publications receiving 3235 citations. Previous affiliations of Mark A. Engle include Tetra Tech & University of Texas at Austin.
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Journal ArticleDOI
Organic substances in produced and formation water from unconventional natural gas extraction in coal and shale
William H. Orem,Calin A. Tatu,Matthew S. Varonka,Harry E. Lerch,Anne L. Bates,Mark A. Engle,Lynn M. Crosby,Jennifer C. McIntosh +7 more
TL;DR: In this paper, the authors examined organic substances in produced and formation water from coalbed methane (CBM) and gas shale plays from across the USA and found that a myriad of organic compounds are present in the produced water.
OtherDOI
Radium content of oil- and gas-field produced waters in the northern Appalachian Basin (USA): Summary and discussion of data
TL;DR: In this article, the authors presented radium activity data for waters co-produced with oil and gas in New York and Pennsylvania from publicly available sources and together with new data for six wells, including one time series.
Journal ArticleDOI
Hydraulic fracturing water use variability in the United States and potential environmental implications.
TL;DR: In this article, water volumes used (injected) to hydraulically fracture over 263,859 oil and gas wells drilled between 2000 and 2014 were compiled and used to create the first U.S. map of hydraulic fracturing water use.
Journal ArticleDOI
Quantifying natural source mercury emissions from the Ivanhoe Mining District, north-central Nevada, USA
TL;DR: In this article, in situ mercury emission measurements were used, along with data from laboratory studies and statistical analysis, to scale up mercury emissions for the naturally enriched Ivanhoe Mining District, Nevada.
Journal ArticleDOI
Geochemical and isotopic evolution of water produced from Middle Devonian Marcellus shale gas wells, Appalachian basin, Pennsylvania
Elisabeth L. Rowan,Mark A. Engle,Thomas F. Kraemer,Karl T. Schroeder,Richard Hammack,Michael W. Doughten +5 more
TL;DR: In this paper, geochemical and isotopic analyses of produced water for 3 time-series and 13 grab samples from Marcellus Shale gas wells in southwest and north central Pennsylvania (PA) were used to address the origin of the water and solutes produced over the long term (>12 months).