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Showing 1 to 13 of 13 for “"Department of Earth and Environmental Sciences"”.
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EN PITHO TEN KERAMEIAN. ANALISI TIPOLOGICA, TECNOLOGICA E FUNZIONALE DEL PITHOS NELLA PEUCEZIA PREROMANA: IL CASO DI JAZZO FORNASIELLO (GRAVINA IN PUGLIA - BA)
The cultural importance of the pithos, the large container for foodstuffs, is emphasized both in written sources and in iconographic documents where it appears in scenes of daily life, sacred rituals, as well as in relation to mythical episodes. However, the most significant evidence of its …
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Timing and pattern of valley excavation, Le Sueur River, south-central Minnesota, USA
Strath terraces of the Le Sueur River, south central Minnesota, preserve the record of river incision. A combination of airborne LiDAR (light detection and ranging) and terrace dating through optically-stimulated luminescence (OSL) and radiocarbon methods were used to construct a conceptual model …
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Long-Term Hydrologic Sustainability of Calcareous Fens Along Glacial Lake Agassiz Beach Ridges, Northwestern Mn
Calcareous fens are peat-accumulating wetlands fed by calcium-rich groundwater that support several threatened species of plants that evolved to thrive in these geochemical conditions. Fifty-three of Minnesota’s nearly 300 identified calcareous fens are located in the Glacial Lake Agassiz beach …
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A method for correlation of gravestone weathering and air quality (SO2), West Midlands, UK
From the beginning of the Industrial Revolution through the environmental revolution of the 1970s Britain suffered the effects of poor air quality primarily from particulate matter and acid in the form of NOx and SOx compounds. Air quality stations across the region recorded SO2 beginning in the …
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Characterizing Provenance of the Late Wisconsinan Rainy Lobe Using Fine-Fraction Geochemistry and Detrital Zircon Geochronology
Till of the Late Wisconsin Rainy lobe, which emanated from the Labradoran sector of the Laurentide ice sheet (LIS), is exposed at the surface from SW Minnesota to the extreme NE part of the State. The Rainy lobe advanced to its maximum limit in southwestern Minnesota well prior to the Last Glacial …
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Ravine alluvial fans as records of landscape change in the Le Sueur River Basin, southern Minnesota
… alluvial fans in the Le Sueur River Basin (LSRB) of south-central Minnesota record post-glacial Holocene changes and modern anthropogenic disturbances to land cover and hydrology in high-latitude watersheds. Seventy meters of base-level drop at the end of the last glaciation initiated millennia of …
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An Investigation of Ni and Cu Isotopic Fractionation in Basal Duluth Complex Cu-Ni-PGE Mineralization, Northeastern Minnesota
… mineralization occurs along the western margin of the Duluth Complex in northeastern Minnesota. Previous studies have demonstrated a notable fractionation of 60Ni and 58Ni in terrestrial materials, including both primary and secondary phases, with a total range of up to 2.1 ‰. Other work has …
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The geologic history of Lake of the Woods, Minnesota, reconstructed using seismic-reflection imaging and sediment core analysis
The history of glacial Lake Agassiz is complex and has intrigued researchers for over a century. Over the course of its ~5,000 year existence, the size, shape, and location of Lake Agassiz changed dramatically depending on the location of the southern margin of the Laurentide Ice Sheet (LIS), the …
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Geology and petrogenesis of the Tuscarora Intrusion of the Duluth Complex, Gillis Lake 7.5’ quadrangle, northeastern Minnesota
… is a layered mafic intrusion located at the base of the 1.1 Ga Duluth Complex in northeastern Minnesota. Detailed field mapping (1:12,000) and follow-up petrographic and geochemical analyses were conducted to evaluate the troctolitic igneous stratigraphy of the Tuscarora Intrusion, as well as to …
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Experimentally generated partition coefficients for the first-row transition elements during eclogite partial melting at three gigapascals
The earth’s mantle is primarily composed of a rock called peridotite. Subduction results in the reinjection of basaltic crust into the mantle, which is metamorphosed into a rock called eclogite. The extent of lithological heterogeneity has implications for the rate of convective stirring and …
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U-Pb geochronology of the Duluth Complex and related hypabyssal intrusions: investigating the emplacement history of a large multiphase intrusive complex related to the 1.1 Ga Midcontinent Rift.
Paces and Miller (1993) precisely established the main intrusive periods that created the Duluth Complex and related intrusions associated with the 1.1 Ga Midcontinent Rift in NE Minnesota. They did not, however, resolve differences in emplacement ages within and between major intrusive units due …
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Surface boulder concentrations of the Late Wisconsinan Rainy lobe, Minnesota, USA
Surface boulder concentrations on the surface of till sheets are ubiquitous features of the Late Wisconsinan Rainy lobe. They occur irrespective of topography or position on the landscape and are commonly found littering the surface of uncultivated pastures and wooded areas within the Wadena and …
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Using Water Budgets and Isotope Analysis to Explore Water Availability in Low Flow Conditions: Hartley Pond Case Study
Quantifying seasonal changes to the volume and timing of water flowing through a reservoir provides valuable information for responsible resource management. Hartley Pond is a reservoir in Duluth, Minnesota, that is formed by a dam on Tischer Creek. Solar forcing to the reservoir elevates the …