December 2018 The Mountain Geologist, Volume 55, Number 4

Geochemical and micropaleontological evidence of paleoenvironmental change in the Late Cretaceous Western Interior Seaway from the Niobrara to the Pierre Shale Formation
Kira K. Timm, Stephen A. Sonnenberg
145

Controls on organic matter distributions in Eocene Lake Uinta, Utah and Colorado 
Ronald C. Johnson, Justin E. Birdwell, Tracey J. Mercier
177

Seismicity in Nebraska and adjacent states: The historical perspective and current trends 
Irina Filina, Kris Guthrie, Mindi Searls, Caroline M. Burberry
217

MEMBER ALERT. The December 2018 issue of The Mountain Geologist will expire from the RMAG website June 30, 2020. If you wish to download this issue, you must do so before this date.


 

July 2018 The Mountain Geologist, Volume 55, Number 3

Subsurface reinterpretation of Ordovician and Devonian strata in southwest Wyoming with implications for upwarping across the Transcontinental Arch
Donna S. Anderson, Mark W. Longman
91

Detrital zircon geochronology of Pennsylvanian-Permian strata in Colorado: evidence for Appalachian-derived sediment and implications for the timing of Ancestral Rocky Mountains uplift
Kajal Nair, John Singleton, Christopher Holm-Denoma, Sven Egenhoff
119

MEMBER ALERT. The July 2018 issue of The Mountain Geologist will expire from the RMAG website January 31, 2020. If you wish to download this issue, you must do so before this date.


April 2018 The Mountain Geologist, Volume 55, Number 2

The Permian Minnekahta Limestone: A Saline Lake Gypsum Replaced by Calcite 
Kathleen C. Benison, Jonathan P. Knapp, Adam Difrisco, E. Troy Rasbury
59

Icacinaceae in the early middle Paleocene Raton Formation, Colorado
Keith Berry
75

MEMBER ALERT. The April 2018 issue of The Mountain Geologist will expire from the RMAG website October 31, 2019. If you wish to download this issue, you must do so before this date.


January 2018 The Mountain Geologist, Volume 55, Number 1

Paleontological evidence against a major geographic barrier at about the paleolatitude of Colorado, USA, during the Late Campanian
Keith Berry
5

Expression of the Colorado Mineral Belt in Upper Cretaceous Niobrara Formation source rock maturity data from the Denver Basin
David J. Thul, Stephen A. Sonnenberg
19

MEMBER ALERT. The January 2018 issue of The Mountain Geologist will expire from the RMAG website July 31, 2019. If you wish to download this issue, you must do so before this date.


October 2017 The Mountain Geologist, Volume 54, Number 4

Stratigraphic Intervals for Oil and Tar Sands Deposits in the Uinta Basin, Utah
Ronald C. Johnson, Justin E. Birdwell, Paul G. Lillis
227

Hanna of Wyoming— The Rockies’ Deepest Basin
Roger M. Matson, W. Jack Magathan
265

MEMBER ALERT. The October 2017 issue of The Mountain Geologist will expire from the RMAG website April 30, 2019. If you wish to download this issue, you must do so before this date.


July 2017 The Mountain Geologist, Volume 54, Number 3

Stratigraphic controls on petrophysical attributes and fluid-flow pathways in an exhumed fluvial reservoir
Timothy A. Cross, Yohan Kusumanegara
129

Low net: gross reservoirs of the transgressive shelf systems in the Upper Mancos Shale, El Vado Sandstone, San Juan Basin, New Mexico
Lesli J. Wood, Tiffany Hedayati Benavidez
147

Petrographic and petrophysical characteristics of the Upper Devonian Three Forks Formation, Southern Nesson Anticline, North Dakota
Rebecca Johnson, Mark Longman, Brian Ruskin
181

Characterization and Origin of Brines from the Bakken-Three Forks Petroleum System in the Williston Basin, USA
Zell Peterman, Joanna Thamke, Kiyoto Futa, Thomas Oliver
203

 

ERRATA 
Please be aware of the following corrections to the version of the manuscript originally posted by RMAG (these notes apply to downloads made between July 31 and August 7, 2017). These changes are based on recommendations from the U.S. Geological Survey's review of the manuscript: 
  • Official address for the U.S. Geological Survey: "Denver Federal Center, Denver, CO 80225". Although the cross streets indicated in the original authors' affiliation line are correct, the official address is not in Lakewood, CO. 
  • Throughout the manuscript, "Exshaw Shale" should be "Exshaw Formation" (for more information on geologic names, visit https://ngmdb.usgs.gov/Geolex/search). 
  • Throughout the manuscript, the three upper members of the Bakken Formation are informal and should be indicated as such (Figure 2) or made lowercase in the text. 
  • The following epochs are formal geologic ages and should be capitalized: Late Devonian, Early Mississippian, and Late Cretaceous. 
  • Wolfcamp-Cline Shale should be separated into the Wolfcamp Shale (Permian) and Cline shale (Upper Pennsylvanian, informal). 
  • In the authors' biographies, "Central Energy Research Science Center" should be "Central Energy Resources Science Center.
 

MEMBER ALERT. The July 2017 issue of The Mountain Geologist will expire from the RMAG website January 31, 2019. If you wish to download this issue, you must do so before this date.