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Appalachian Basin

News & Recent Publications


Thursday, July 31, 2014

Petrographic maturity parameters of a Devonian shale maturation series, Appalachian Basin, USA. ICCP Thermal Indices Working Group interlaboratory exercise

Outside Publication: International Journal of Coal Geology
This paper presents results of an interlaboratory exercise on organic matter optical maturity parameters using a natural maturation series comprised by three Devonian shale samples (Huron Member, Ohio Shale) from the Appalachian Basin, USA. This work was conducted by the Thermal Indices Working Group of the International Committee for Coal and Organic Petrology (ICCP) Commission II (Geological Applications of Organic Petrology).


Monday, June 02, 2014

The Devonian Marcellus Shale and Millboro Shale

Outside Publication: GSA Field Guides 35, 2014
This field trip will examine a number of natural and engineered exposures in the vicinity of the West Virginia–Virginia state line, where participants will have the opportunity to view a variety of sedimentary facies within the Marcellus shale itself, sedimentary structures, tectonic structures, fossils, overlying and underlying formations, volcaniclastic ash beds, and to view a basaltic intrusion.


Wednesday, March 26, 2014

Characterization of the Marcellus Shale Based on Computer-Assisted Correlation of Wireline Logs in Virginia and West Virginia

USGS Publication: Scientific Investigations Report 2013–5131
In an attempt to determine if this scale of deformation is detectable with conventional wireline logs, petrophysical properties (primarily mineralogy and porosity) were measured by interpretation of gamma-ray and bulk-density logs. The results of performing a statistical correlation of wireline logs from nine wells indicated that there are discontinuities within the Millboro Shale (undifferentiated Marcellus Shale and Mahantango Formation) where there are significant thickness differences between wells. 


Thursday, December 12, 2013

Surface disposal of produced waters in western and southwestern Pennsylvania

Potential for accumulation of alkali-earth elements in sediments

Outside Publication: International Journal of Coal Geology
In this study, we assess whether disposal practices from treatment of produced waters from both shale gas and conventional operations in Pennsylvania could result in the accumulation of associated alkali earth elements. The results from our 5 study sites indicate that there was no increase in concentrations of total Ra (Ra-226) and extractable Ba, Ca, Na, or Sr in fluvial sediments downstream of the discharge outfalls (p > 0.05) of publicly owned treatment works (POTWs) and centralized waste treatment facilities (CWTs). 


Thursday, December 12, 2013

Geochemical evolution of produced waters from hydraulic fracturing of the Marcellus Shale, northern Appalachian Basin

A multivariate compositional data analysis approach

Outside Publication: International Journal of Coal Geology
Multivariate compositional data analysis methods were used to investigate geochemical data for water injected during hydraulic fracturing and for water produced from 19 Marcellus Shale gas wells in the northern Appalachian Basin.


Tuesday, April 02, 2013

Coal Fields of the Conterminous United States

National Coal Resource Assessment Updated Version

USGS Publication: Open-File Report 2012–1205
This map sheet with accompanying Geographic Information System (GIS) project is an update of the existing U.S. Geological Survey (USGS) Conterminous U.S. Coal Fields map. This update was compiled using data primarily from the USGS National Coal Resource Assessment (NCRA) and information from other published maps.


Thursday, December 13, 2012

Interpretation of Na–Cl–Br Systematics in Sedimentary Basin Brines

Comparison of Concentration, Element Ratio, and Isometric Log-ratio

Outside Publication: Mathematical Geosciences
Mathematicians and geochemists have long realized that compositional data intrinsically exhibit a structure prone to spurious and induced correlations. This paper demonstrates, using the Na–Cl–Br system, that these mathematical problems are exacerbated in the study of sedimentary basin brines by such processes as the evaporation or dissolution of salts owing to their high salinities.


Monday, December 03, 2012

Thermal Maturity Map of Devonian Shale in the Illinois, Michigan, and Appalachian Basins of North America

USGS Publication: Scientific Investigations Map 3214
This publication presents a thermal maturity map of Devonian shale in the Illinois, Michigan, and Appalachian basins. The map shows outlines of the three basins (dashed black lines) and an outline of Devonian shale (solid black lines).


Thursday, October 04, 2012

Assessment of undiscovered oil and gas resources of the Ordovician Utica Shale of the Appalachian Basin Province, 2012

Press Release & Publication
The Utica Shale contains about 38 trillion cubic feet of undiscovered, technically recoverable natural gas (at the mean estimate) according to the first assessment of this continuous (unconventional) natural gas accumulation by the U. S. Geological Survey.  The Utica Shale has a mean of 940 million barrels of unconventional oil resources and a mean of 208 million barrels of unconventional natural gas liquids.


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Overview

A fully loaded coal train winds through scenic Appalachia
Photo: A fully loaded coal train winds
through scenic Appalachia.

The Appalachian Basin Region is a physiographic province extending from Alabama to Maine and encompasses the eastern seaboard of the United States. Evidence suggests the complex geology of the region was formed by a series of continental plate collisions and deformation resulting in the Appalachian Mountains and large areas of elongated, faulted, and deformed ridges and valleys. Over time erosion has carried sediments seaward to the continental shelf and modified the landscape to the more familiar piedmont terraine. The region contains large amounts of natural resources and a long history of oil, gas, and coal production. The first oil wells in the U.S. were discovered in this province and research and assessments continue on these prolific coal and oil and gas deposits. This web site provides access to the diverse Energy Resources Program research activities and products within the Appalachian Basin Region.

Research

National Oil and Gas Assessments: Appalachian Basin Focus Area
National Oil and Gas
Assessments

National Oil and Gas Assessments

The USGS has completed several assessments of the Appalachian Basin. This information is summarized on the Oil and Gas Assessment Appalachian Basin page.


National Coal Resource Assessment: Appalachian Basin Focus Area
National Coal Resource
Assessment

National Coal Resource Assessment

The National Coal Resource Assessment (NCRA) project was a multi-year effort by the U.S. Geological Survey (USGS) Energy Program to identify, characterize, and assess the coal resources that will supply a major part of the Nation’s energy needs during the next few decades. NCRA data and publications are available on the NCRA Appalachian Basin page.


Coalbed Methane Assessment: Appalachian Basin Focus Area
Coalbed Methane Assessment

Coalbed Methane Assessment

There are coalbed methane assessments for the Appalachian Basin currently available.

 

 

 

Data

Reports

Coal and Petroleum Resources Data Report

Regional Cross-section Maps

An example of a cross-section map
An example of a cross-section map that documents and improves understanding of the geologic framework and petroleum systems of the Appalachian basin.

Ryder, R.T., Trippi, M.H., Swezey, C.S. Crangle, R.D., Jr., Hope, R.S., Rowan, E.L., and Lentz, E.E., 2012, Geologic cross section C–C’ through the Appalachian basin from Erie County, north-central Ohio, to the Valley and Ridge province, Bedford County, south-central Pennsylvania: U.S. Geological Survey Scientific Investigations Map 3172, 2 sheets, 70-p. pamphlet.
Available at: http://pubs.usgs.gov/sim/3172/

Trippi, M.H., and Crangle, R.D., Jr., 2009, Log ASCII Standard (LAS) files for geophysical (gamma ray) wireline well logs and their application to geologic cross section C-C’ through the central Appalachian basin: U.S. Geological Survey Open File Report 2009-1021, 13 p., 20 LAS files.
Available at: http://pubs.usgs.gov/of/2009/1021/

Ryder, R.T., Crangle, R.D., Jr., Trippi, M.H., Swezey, C.S., Lentz, E.E., Rowan, E.L., and Hope, R.S., 2009, Geologic cross section D–D’ through the Appalachian basin from the Findlay arch, Sandusky County, Ohio, to the Valley and Ridge province, Hardy County, West Virginia: U.S. Geological Survey Scientific Investigations Map 3067, 2 sheets, 52-p. pamphlet.
Available at: http://pubs.usgs.gov/sim/3067/
Also Available: Downloadable Corresponding LAS Files 

Ryder, R.T., Swezey, C.S., Crangle, R.D. Jr., and Trippi, M.H., 2008, Geologic Cross Section E-E' through the Appalachian Basin from the Findlay Arch, Wood County, Ohio, to the Valley and Ridge Province, Pendleton County, West Virginia: U.S. Geological Survey Scientific Investigations Map 2985.
Available at: http://pubs.usgs.gov/sim/2985/
Also Available: Downloadable Corresponding LAS Files

Ryder, R.T, 2008, Stratigraphic Framework of Cambrian and Ordovician Rocks in the Appalachian Basin from Sequatchie County, Tennessee, through Eastern Kentucky, to Mingo County, West Virginia: U.S. Geological Survey Scientific Investigations Map 2994.
Available at: http://pubs.usgs.gov/sim/2994/

Crangle, R.D., 2007, Log ASCII Standard (LAS) files for geophysical wireline well logs and their application to geologic cross sections through the central Appalachian basin: U.S. Geological Survey Open-File Report 2007-1142.
Available at: http://pubs.usgs.gov/of/2007/1142/

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Page Last Modified: Tuesday, June 10, 2014

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