Fluvial Architecture of the Lower Cretaceous Lakota Formation, Southwestern Flank of the Black Hills Uplift, South Dakota (open access)

Fluvial Architecture of the Lower Cretaceous Lakota Formation, Southwestern Flank of the Black Hills Uplift, South Dakota

From introduction This report describes large-scale depositional units referred to as architectural elements, interpreted from outcrops of three distinct fluvial sandstone units of the Lakota Formation in the southwestern Black Hills area of Custer and Fall River Counties, South Dakota. These fluvial deposits formed near the end of an episode of continental deposition that began when the Jurassic Sundance sea regressed from the region and ended when the Early Cretaceous Skull Creek sea encroached from the north in Albian time.
Date: 1995
Creator: Dahlstrom, David J. & Fox, James E.
System: The UNT Digital Library
Gravity and Aeromagnetic Studies of the Powder River Basin and Surrounding Areas, Southeastern Montana, Northeastern Wyoming, and Western South Dakota (open access)

Gravity and Aeromagnetic Studies of the Powder River Basin and Surrounding Areas, Southeastern Montana, Northeastern Wyoming, and Western South Dakota

From abstract: This report contains complete Bouguer anomaly, isostatic residual anomaly, and horizontal gradient anomaly gravity maps of the Powder River Basin and surrounding areas in southeastern Montana, northeastern Wyoming, and western South Dakota were compiled using gravity data from 21,528 stations. A total-intensity anomaly aeromagnetic map with 3 mile spaced east-west flight-lines is also presented. Also included is an analysis of these maps and data, focusing on gravity and aeromagnetic studies.
Date: 1994
Creator: Robbins, Stephen L.
System: The UNT Digital Library
Genetic Analysis of Paddlefish: A Comparison of Individuals from Missouri, South Dakota and Texas (open access)

Genetic Analysis of Paddlefish: A Comparison of Individuals from Missouri, South Dakota and Texas

Report examining cultured paddlefish, their muscle proteins, and their eyes to see if protein electrophoresis is a useful way to study stock dynamics. The report indicates this is an inadequate means of study.
Date: February 1993
Creator: Fries, Loraine T. (Loraine Thomas), 1956- & Hutson, Pat L.
System: The Portal to Texas History