Technical Report Archive & Image Library (TRAIL) - 36 Matching Results

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Pre-Cambrian Rocks of the Lake Superior Region: A Review of Newly Discovered Geologic Features, with a Revised Geologic Map

Description: From abstract: Detailed knowledge of the geology of the pre-Cambrian rocks of the Lake Superior region has been greatly augmented since the publication of Monograph 52 by the United States Geological Survey in 1911. The authors have attempted in the present report to assemble as much of this new information as possible, and to give the reader a birdseye view of the geology as seen in the light of all studies made there up to the present time. Detailed descriptions are not presented, and the emp… more
Date: 1935
Creator: Leith, C. K.; Lund, Richard Jacob & Leith, Andrew
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Eruptive and Sedimentary Rocks on Pigeon Point, Minnesota, and Their Contact Phenomena

Description: From preface: The preparation of this paper is due to the fact that the eruptive rocks occurring on Pigeon point, Minnesota, may be taken as types of similar eruptives found so widely spread over the Huronian and Keweenawan areas surrounding Lake Superior, and to the peculiar nature of the alteration these have superinduced in the fragmental rocks through which they have broken.
Date: 1893
Creator: Bayley, William Shirley
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Quaternary Geology of Minnesota and Parts of Adjacent States

Description: Description of geology in Minnesota and explanations of glacial drift within the state an immediate surroundings (Wisconsin, Iowa, North Dakota and South Dakota) with sections detailing the movement of each glacier and relevant geological notes. Index starts on page 147.
Date: 1930
Creator: Leverett, Frank, 1859-1943
Item Type: Refine your search to only Report
Location: None
Partner: UNT Libraries Government Documents Department
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Hydrogeologic and Water-Quality Characteristics of the Ironton-Galesville Aquifer, Southeast Minnesota

Description: Introduction: The U.S. Geological Survey began a study in 1980 of the quality of water in the principal aquifers of Minnesota. The U.S. Environmental Protection Agency funded the study as part of the Underground Injection Control Program, which deals with disposal of liquid wastes beneath land surface. The initial report designated 14 aquifers in the State and provided general information about their geologic, hydrologic, and water-quality characteristics (Adolphson and others, 1981). This repo… more
Date: 1982
Creator: Ruhl, J. F. & Wolf, R. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Digital Models of a Glacial Outwash Aquifer in the Pearl-Sallie Lakes Area, West-Central Minnesota

Description: From purpose and scope: The purpose of this investigation is to 1) study the hydrologic system in a glaciated terrain typified by numerous lakes, with particular focus on the effects of lake-ground-water interchange, 2) simulate the natural system by using two digital modeling methods--areal (map view) and vertical section, and 3) evaluate the utility of the models and determine the kinds and amount of basic data needed to obtain reasonable simulations.
Date: November 1975
Creator: Larson, Steven P.; McBride, Mark S. & Wolf, Ronald J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ground-Water Appraisal of the Pineland Sands Area, Central Minnesota

Description: Purpose and scope: The major purpose of this study is to evaluate the ground-water resources in the Pineland Sands area and their potential for development. The study focuses mainly on the surficial aquifer, the single most readily available source of ground water. Primary objectives of the study are (1) map the areal extent and thickness of the surficial aquifer, (2) determine its ability to transmit water to wells and define the availability of the water, (3) describe the chemical quality of … more
Date: 1977
Creator: Helgesen, John O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preliminary Evaluation of the Ground-Water-Flow System in the Twin Cities Metropolitan Area, Minnesota

Description: From abstract: A preliminary quasi-three-dimensional finite-difference ground-water-flow model of the seven-county Twin Cities Metropolitan area was constructed and used to evaluate parameter sensitivity and adequacy of available data.
Date: August 1982
Creator: Guswa, J. H.; Siegel, D. I. & Gillies, D. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preimpoundment Water Quality of the Wild Rice River, Norman County, Minnesota

Description: From abstract: This report uses water samples collected from two sites at the Wild Rice River in Minnesota to "establish baseline water-quality characteristics before construction of a reservoir near Twin Valley, Minnesota for recreation and flood control." It contains a map, graphs, and tables.
Date: June 1980
Creator: Tornes, Lan H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Availability and Chemical Quality of Water From Surficial Aquifers in Southwest Minnesota

Description: From introduction: The objectives of the study were to (1) determine the areal extent, thickness, and water-yielding capability of aquifers in the surficial deposits, (2) estimate the amount of water in storage in the aquifers, (3) determine the chemical quality of water in the aquifers and, (4) establish observation wells to monitor the effects of ground-water development on water levels and storage in the aquifers.
Date: 1983
Creator: Adolphson, D. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ground-Water-Use Trends in the Twin Cities Metropolitan Area, Minnesota, 1880-1980

Description: From purpose and scope: The purpose of this report is to describe trends in ground-water use in the Twin Cities metropolitan area, Minnesota, from 1880 to 1980. Water-use trends are discussed in terms of use category, volume of water used over time, aquifer, and well location.
Date: 1983
Creator: Horn, M. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogeology of the Buffalo Aquifer, Clay and Wilkin Counties, West-Central Minnesota

Description: From introduction: The objective of this study are to (1) determine the areal extent and thickness of the Buffalo aquifer and the general occurrence of deeply buried aquifers, (2) determine the potential for development of water supplies from wells in the Buffalo aquifer, (3) investigate and discuss annual recharge to the Buffalo aquifer and the potential for artificially recharging the aquifer, (4) determine the chemical quality of water in the aquifer and in area streams, (5) establish a netw… more
Date: February 1981
Creator: Wolf, Ronald J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hydrology of Lakes in the Minneapolis-Saint Paul Metropolitan Area: A Summary of Available Data Stored -- Using a Data-Base Management System

Description: Abstract:Data were collected and summarized on the hydrology and hydrogeology of 949 lakes, 10 acres (4 hectares) or larger, in the Minneapolis-St. Paul metropolitan area, Minnesota. Eight tables totaling over 100 pages present data on location, depth, area, lake level, ecological and game-management classification, inflowing and outflowing streams, soils, bedrock type, water added to or take from lake, and reported lake-related problems. SYSTEM 2000, a generalized computer data-base management… more
Date: September 1976
Creator: McBride, Mark S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hydrogeologic and Water-Quality Characteristics of the St. Peter Aquifer, Southeast Minnesota

Description: From abstract: This report is one of a series on the hydrogeology and water quality of the 14 principal aquifers in Minnesota prepared by the U.S. Geological Survey. The U.S. Environmental Protection Agency requested these studies because of the need for information to develop its Underground Injection Control Program.
Date: 1983
Creator: Ruhl, J. F. & Wolf, R. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogeologic and Water-Quality Characteristics of the Upper Carbonate Aquifer in Minnesota

Description: Introduction: The U.S. Geological Survey began a study in 1980 of the quality of water in the 14 principal aquifers in Minnesota. The U.S. Environmental Protection Agency funded the study as part of the Underground Injection Control Program, which deals with disposal of liquid wastes beneath land surface. The initial report designated the 14 aquifers and provided general information about their geologic, hydrologic, and water-quality characteristics (Adolphson and others, 1981). This report, on… more
Date: 1984
Creator: Ruhl, J. F. & Wolf, R. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogeologic and Water-Quality Characteristics of the Prairie du Chien-Jordan Aquifer, Southeast Minnesota

Description: From abstract: This report is one of a series on the hydrogeology and water quality of the 14 principal aquifers in Minnesota prepared by the U.S. Geological Survey. The U.S. Environmental Protection Agency requested these studies because of the need for information to develop its Underground Injection Control Program.
Date: 1983
Creator: Ruhl, J. F.; Wolf, R. J. & Adolphson, D. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ground Water for Irrigation in the Viking Basin, West-Central Minnesota

Description: Abstract: The Viking Basin consists of six glacial outwash areas in Douglas, Ottertail, and Todd Counties, west-central Minnesota. Total area is 340 square miles (880 square kilometers). Soils are sandy and excessively well-drained. Crops grown on the outwash would benefit from supplemental irrigation. Irrigation supplies can be obtained from wells in the surface outwash aquifer in significant parts of the large outwash areas near Carlos and Parkers Prairie and the small outwash area near Cloth… more
Date: October 1975
Creator: McBride, M. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Graphic and Analytical Methods for Assessment of Steam-Water Quality -- Mississippi River in the Minneapolis-St. Paul Metropolitan Area, Minnesota

Description: From Purpose and Objectives: This study was made primarily to provide a means to depict and forecast stream quality based on known causative or apparent correlative factors.
Date: July 1976
Creator: Larson, Steven P.; Mann, William B., IV; Steele, Timothy Doak & Susag, Russell H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Baseline Water Quality of Schmidt, Hornbeam and Horseshoe Lakes, Dakota County, Minnesota

Description: This report presents the results of water sampling from three lakes in Dakota County over an eighteen-month period. The author determined that "the lakes were shallow, non-stratified, and nutrient-enriched." It includes tables and other figures.
Date: January 1980
Creator: Payne, Gregory A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogeologic and Water-Quality Characteristics of the Mount Simon-Hinckley Aquifer, Southeast Minnesota

Description: From abstract: This report is one of a series on the hydrogeology and water quality of the 14 principal aquifers in Minnesota prepared by the U.S. Geological Survey. The U.S. Environmental Protection Agency requested these studies because of the need for information to develop its Underground Injection Control Program.
Date: 1983
Creator: Wolf, R. J.; Ruhl, J. F. & Adolphson, D. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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