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Stratigraphy

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2016

Hydrogeology

Articles 1 - 2 of 2

Full-Text Articles in Earth Sciences

Three-Dimensional Architecture And Hydrostratigraphy Of Cross-Cutting Buried Valleys Using Airborne Electromagnetics, Glaciated Central Lowlands, Nebraska, Usa, Jesse T. Korus Dr., Robert Matthew Joeckel, Dana P. Divine, Jared D. Abraham Jul 2016

Three-Dimensional Architecture And Hydrostratigraphy Of Cross-Cutting Buried Valleys Using Airborne Electromagnetics, Glaciated Central Lowlands, Nebraska, Usa, Jesse T. Korus Dr., Robert Matthew Joeckel, Dana P. Divine, Jared D. Abraham

Conservation and Survey Division

Buried valleys are characteristic features of glaciated landscapes, and their deposits host important aquifers worldwide. Understanding the stratigraphic architecture of these deposits is essential for protecting groundwater and interpreting sedimentary processes in subglacial and ice-marginal environments. The relationships between depositional architecture, topography and hydrostratigraphy in dissected, pre-Illinoian till sheets is poorly understood. Boreholes alone are inadequate to characterize the complex geology of buried valleys, but airborne electromagnetic surveys have proven useful for this purpose. A key question is whether the sedimentary architecture of buried valleys can be interpreted from airborne electromagnetic profiles. This study employs airborne electromagnetic resistivity profiles to …

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Three-Dimensional Geologic Modeling And Groundwater Flow Modeling Above A Co2 Sequestration Test Site, Eric Wade Peterson, David H. Malone Jun 2016

Three-Dimensional Geologic Modeling And Groundwater Flow Modeling Above A Co2 Sequestration Test Site, Eric Wade Peterson, David H. Malone

Eric Wade Peterson

As temperatures rise and climate change becomes an increasingly important issue, geologic carbondioxide (CO2) sequestration is a viable solution for reducing greenhouse gas emissions. Subsurface3-D modeling and groundwater flow modeling were completed as a component of a CO2sequestration feasibility study in the city of Decatur, Illinois. The Decatur Archer Daniels MidlandCompany Ethanol Plant (ADM) serves as the injection site for a CO2 sequestration project within adeep saline reservoir. Petrel was successfully used to model the glacial deposits in the area. The3-D geologic model shows the Peoria Silt, Wedron Formation, and Cahokia Formation at the surface …

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