Search filters

List of works by Mark A. Engle

A framework for assessing water and proppant use and flowback water extraction associated with development of continuous petroleum resources

article

Advances in self-organizing maps for their application to compositional data

article

Application of environmental groundwater tracers at the Sulphur Bank Mercury Mine, California, USA

Application of near-surface geophysics as part of a hydrologic study of a subsurface drip irrigation system along the Powder River floodplain near Arvada, Wyoming

Assessment of water and proppant quantities associated with petroleum production from the Bakken and Three Forks Formations, Williston Basin Province, Montana and North Dakota, 2016

Atmospheric mercury and fine particulate matter in coastal New England: Implications for mercury and trace element sources in the northeastern United States

article

Atmospheric mercury emissions and speciation at the sulphur bank mercury mine superfund site, Northern California

scientific article

Atmospheric mercury emissions from substrates and fumaroles associated with three hydrothermal systems in the western United States

scientific article published in 2006

Atmospheric particulate matter in proximity to mountaintop coal mines: sources and potential environmental and human health impacts

scientific article

CO(2), CO, and Hg emissions from the Truman Shepherd and Ruth Mullins coal fires, eastern Kentucky, USA.

scientific article published on 13 January 2010

Cadmium isotope fractionation during coal combustion: Insights from two U.S. coal-fired power plants

article

Can we beneficially reuse produced water from oil and gas extraction in the U.S.?

scientific article published on 03 February 2020

Characterization and cycling of atmospheric mercury along the central US Gulf Coast

Comparison of atmospheric mercury speciation and deposition at nine sites across central and eastern North America

scholarly article

Compositional analysis of formation water geochemistry and microbiology of commercial and carbon dioxide-rich wells in the southwestern United States

scientific article published in 2020

Datasets associated with investigating the potential for beneficial reuse of produced water from oil and gas extraction outside of the energy sector

scientific article published on 09 March 2020

Direct Trace Element Determination in Oil and Gas Produced Waters with Inductively Coupled Plasma‐Optical Emission Spectrometry: Advantages of High Salinity Tolerance

Direct estimation of diffuse gaseous emissions from coal fires: Current methods and future directions

Discharges of produced waters from oil and gas extraction via wastewater treatment plants are sources of disinfection by-products to receiving streams

scientific article published on 29 August 2013

Environmental geology and the unconventional gas revolution: Introduction to the Special Issue

scholarly article by Daniel J. Soeder published in June 2014

Gas emissions, minerals, and tars associated with three coal fires, Powder River Basin, USA.

scientific article published on 11 February 2012

Gas emissions, tars, and secondary minerals at the Ruth Mullins and Tiptop coal mine fires

Geochemical and geophysical indicators of oil and gas wastewater can trace potential exposure pathways following releases to surface waters

scientific article published on 14 October 2020

Geochemical and isotopic evolution of water produced from Middle Devonian Marcellus shale gas wells, Appalachian basin, Pennsylvania

Geochemical evolution of produced waters from hydraulic fracturing of the Marcellus Shale, northern Appalachian Basin: A multivariate compositional data analysis approach

article

Geochemistry of formation waters from the Wolfcamp and “Cline” shales: Insights into brine origin, reservoir connectivity, and fluid flow in the Permian Basin, USA

scholarly article

Health effects of energy resources

scientific article published in 2010

High Mercury Wet Deposition at a "Clean Air" Site in Puerto Rico

scientific article

Hydraulic fracturing water use variability in the United States and potential environmental implications

scientific article published on 24 July 2015

Insights on Geochemical, Isotopic, and Volumetric Compositions of Produced Water from Hydraulically Fractured Williston Basin Oil Wells

scientific article published in July 2021

Interpretation of Na–Cl–Br Systematics in Sedimentary Basin Brines: Comparison of Concentration, Element Ratio, and Isometric Log-ratio Approaches

scientific article published in 2012

Linking compositional data analysis with thermodynamic geochemical modeling: Oilfield brines from the Permian Basin, USA

article

Machine Learning Can Assign Geologic Basin to Produced Water Samples Using Major Ion Geochemistry

scholarly article

Mercury distribution in two Sierran forest and one desert sagebrush steppe ecosystems and the effects of fire

scientific article published on 9 January 2006

Mercury exchange between the atmosphere and low mercury containing substrates

Mercury, Trace Elements and Organic Constituents in Atmospheric Fine Particulate Matter, Shenandoah National Park, Virginia, USA: A Combined Approach to Sampling and Analysis

Methane and Benzene in Drinking-Water Wells Overlying the Eagle Ford, Fayetteville, and Haynesville Shale Hydrocarbon Production Areas.

scientific article published on 31 May 2017

Organic substances in produced and formation water from unconventional natural gas extraction in coal and shale

article

Origin and geochemistry of formation waters from the lower Eagle Ford Group, Gulf Coast Basin, south central Texas

scholarly article

Partitioning of selected trace elements in coal combustion products from two coal-burning power plants in the United States

article

Pore characteristics of Wilcox Group Coal, U.S. Gulf Coast Region: Implications for the occurrence of coalbed gas

Quality assurance and quality control of geochemical data—A primer for the research scientist

scientific article published in 2011

Quantifying chemical weathering rates along a precipitation gradient on Basse-Terre Island, French Guadeloupe: New insight from U-series isotopes in weathering rinds

article

Quantifying greenhouse gas emissions from coal fires using airborne and ground-based methods

article by Mark A. Engle et al published November 2011 in International Journal of Coal Geology

Quantifying natural source mercury emissions from the Ivanhoe Mining District, north-central Nevada, USA

Scaling of atmospheric mercury emissions from three naturally enriched areas: Flowery Peak, Nevada; Peavine Peak, Nevada; and Long Valley Caldera, California

scientific article published on May 2002

Statistical analysis of soil geochemical data to identify pathfinders associated with mineral deposits: An example from the Coles Hill uranium deposit, Virginia, USA

article

Summary of inorganic compositional data for groundwater, soil-water, and surface-water samples collected at the Headgate Draw subsurface drip irrigation site, Johnson County, Wyoming

article

Summary of mercury and trace element results in precipitation from the Culpeper, Virginia, Mercury Deposition Network Site (VA-08), 2002-2006

scientific article published in 2008

Surface disposal of produced waters in western and southwestern Pennsylvania: Potential for accumulation of alkali-earth elements in sediments

article published in 2014

The Role of Water in Unconventional in Situ Energy Resource Extraction Technologies

article

The Tiptop coal-mine fire, Kentucky: Preliminary investigation of the measurement of mercury and other hazardous gases from coal-fire gas vents

article published in 2009

The isometric log-ratio (ilr)-ion plot: A proposed alternative to the Piper diagram

The role of climate in increasing salt loads in dryland rivers

The water-energy nexus: an earth science perspective

article

Three-way compositional analysis of water quality monitoring data

article

Tracking solutes and water from subsurface drip irrigation application of coalbed methane–produced waters, Powder River Basin, Wyoming

USGS investigations of water produced during hydrocarbon reservoir development

article

Using simulated maps to interpret the geochemistry, formation and quality of the Blue Gem coal bed, Kentucky, USA

scholarly article by Nicholas J. Geboy et al published June 2013 in International Journal of Coal Geology

Utica Shale Play Oil and Gas Brines: Geochemistry and Factors Influencing Wastewater Management

scientific article published on 14 October 2020

Volatile-organic molecular characterization of shale-oil produced water from the Permian Basin

scientific article published on 20 January 2016

Wastewater Disposal from Unconventional Oil and Gas Development Degrades Stream Quality at a West Virginia Injection Facility

scientific article published on 9 May 2016

Whole-coal versus ash basis in coal geochemistry: A mathematical approach to consistent interpretations

scholarly article by Nicholas J. Geboy et al published July 2013 in International Journal of Coal Geology