Browsing by Subject "2014 Precambrian Field Camp"

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    2014 Precambrian Field Camp
    (2014-08) University of Minnesota Duluth. Precambrian Research Center
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    2014 Precambrian Field Camp Capstone Mapping Projects Map
    (2014) University of Minnesota Duluth. Precambrian Research Center
    This map shows the locations of the capstone mapping projects for the 2014 Precambrian Field Camp sponsored by the Precambrian Research Center. It also indicates who participated in which project.
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    Bedrock Geologic Map of a Portion of the South Kawishawi Intrusion, Lake County, Minnesota
    (2014-08) Branham, Jesse; Dove, Andrea; Ferry, Carlos; Gorlick, Jacob; Hoeft, Erin; Pysher, Aaron; Mulcahy, Connor; Peterson, Dean M
    This map is the result of a six day mapping project in the South Kawishiwi Intrusion, which took place from August 3rd through the 8th of 2014. This map was created on a 1:5000 scale by Precambrian Research Center field camp students at the University of Minnesota Duluth under the supervision of Dr. Dean Peterson. Data for this project was compiled from Peterson (2014) and Phinney (1966) and combined with the data that was collected over the mapping period. The purpose of this project was to create a more detailed and accurate geological map of this locality on the Duluth Complex, as well as a better understanding of possible glacial till deposits in the area. This project was also performed to test the conceptual model of this location, which inferred that the lineaments seen on LIDAR of the area consisted of mainly fault-like features and that the area was primarily covered by glacial water table through these fractures/faults due to mining operations and tailings processes. This capstone area was selected under the idea that the proposed conceptual model for the lineaments in the mapping area were incorrect. After six days of mapping and data collection on this location it is accurate to conclude that this area consists of almost entirely bedrock composed of large amounts of varying types of troctolite and anorthosite, with a sparse amount of localized till piles that consist of small pebbles to large boulders. The 1227 outcrops that were mapped in this area were not found to be fractured/faulted but instead broke apart due to frost wedging. This is the dominant type of mechanical weathering in the area. of this area was found to be false and the local water table and aquifers in this area would not be in jeapordy by consequence of mining operations.
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    Bedrock Geologic Map of the Central Part of Knife Lake, Boundary Waters Canoe Area Wilderness, Northern Minnesota
    (2014-08) Krogmeier, Ben; McKevitt, Dylan; Roepke, Liz; Sara, Michael; Szkilnyk, Paul; Jirsa, Mark J
    This map of the central Knife Lake area in the Boundary Waters Canoe Area Wilderness (BWCAW, Fig. 1) is the result of six days of bedrock mapping in August, 2014 by PRC Field Camp students under the guidance of Mark Jirsa, Minnesota Geological Survey, along with information gathered from Jirsa and Miller (2004), Gruner (1941), and Mulcahy and others (2013). The geology in this area has not been mapped in detail due to its remote location. The authors conducted extensive canoe shoreline mapping and inland traverses in an attempt to better define geologic contacts, structural features, and depositional facies for an improved understanding of the region. The relationships between mafic metavolcanic rocks, diverse metasedimentary units, and various intrusions were better characterized. Mineralized shear zones and locally intense sulfide mineralization may be indicators of economic significance within this complex Neoarchean terrane. Field mapping was conducted using 1:24,000 scale maps, and digitally compiled at 1:12,000 scale.
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    Bedrock Geology Map of the Granophyre Transition Zone into the North Shore Volcanic Group, Cook County, Minnesota
    (2014-08) Kramer, Meredith; Sauer, Sarah; Gordee, Sarah M; Boerboom, Terrence J
    This map represents a compilation of data taken in the southern half of the Lima and Pine Mountain Quadrangles between August 4 and 9, 2014 by a PRC field camp student under the direction of Terrence Boerboom. It is part of a broad scale goal by the Minnesota Geological Survey to map in detail the geology of Minnesota’s north shore. While the shoreline quads are mostly completed, this is one of the first inland sections to be mapped at a detailed scale. The 347 outcrops were accessed by either using an all terrain vehicle on the trails or traversing areas in the bush by foot. Statewide 1 meter LiDAR elevation maps were used as a tool to search for outcrop while in the bush.
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    Bedrock Geology of the Esther Lake Area, Cook County, Minnesota
    (2014-08) Clark, Jonathan A; Eshler, Kristyn; Groff, Patrick; Rode, Alexander G; Salings, Emily; Vander Wyst, Kyle; Larson, Phillip
    Six students from the 2014 Precambrian Research Center Field Camp spent five days, from August 3-9, mapping the Esther Lake area in northeast Minnesota. Dr. Phillip Larson, an adjunct assistant professor at University Minnesota Duluth and senior geologist for Duluth Metals Limited, oversaw the work and directed students to better cover the area. In total, about four square miles were mapped at 1:10,000 scale using mapping techniques of land traverse, shoreline traverse around lakes, and outcrop sampling. A total traverse distance of about 45 kilometers was traveled in the mapping of 247 outcrop around 6 lakes. The purpose of the map was to build upon Grout and other (1959) reconnaissance-level mapping from the1930s and create the first detailed map of the Esther Lake Area including the North Shore Volcanic Group, Cucumber Lake granophyre intrusion, and three other intrusive dikes displaying similar characteristics to the Beaver Bay Complex along with several sills similar to the Crocodile Lake gabbro intrusion. The primary objectives were to outline contacts of the sequences and differentiate the intrusive bodies along with lithological emplacement.
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    Bedrock Geology of the North and South Temperance Lakes Area, Boundary Waters Canoe Area Wilderness, Cook County, Minnesota
    (2014-08) Beaver, Christopher; Hahn, Timothy, Jr; Miller, Nikolas; Pugliese, Joseph; Wright, Erick; Miller, James
    This map was compiled based on the mapping of over 850 outcrops over the course of 5 days under the supervision of Dr. Jim Miller. Five students, along with Dr. Miller, mapped outcrop along the shorelines of North Temperance Lake and South Temperance Lake, in order to better understand the lithostratigraphy, contact relationships, and other features comprising an as yet unnamed ma c layered intrusion that forms the footwall to the Sawbill Lake intrusion mapped in previous capstone projects (Brooker and Miller, 2013).