Reservoir uncertainty, Precambrian topography, and carbon sequestration in the Mt. Simon Sandstone, Illinois Basin

Leetaru, Hannes E.; McBride, John H.

doi:10.1306/eg.04210909006

Cited by 45 publications

(35 citation statements)

References 8 publications

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“…8B). This is similar in depositional style to other siliciclastic units that mark the basal Sauk Sequence such as the Mount Simon Formation in Ohio (Reuter and Watts, 2004;Leetaru and McBride, 2009), Flathead Sandstone of northern Wyoming (Bell, 1970), and Tapeats Sandstone of northern Arizona (Rose, 2006).…”

Section: Depositional Model For the Van Horn Formation And Implicatiosupporting

confidence: 61%

Detrital zircon geochronology of the Grenville/Llano foreland and basal Sauk Sequence in west Texas, USA

Spencer

Prave

Cawood

et al. 2014

Geological Society of America Bulletin

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Section: Depositional Model For the Van Horn Formation And Implicatiosupporting

confidence: 61%

Detrital zircon geochronology of the Grenville/Llano foreland and basal Sauk Sequence in west Texas, USA

Spencer

Prave

Cawood

et al. 2014

Geological Society of America Bulletin

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“…The thickness of the Mt. Simon Sandstone is variable across the Illinois Basin and, in some cases, is absent, particularly in the western and southern flanks of the Illinois Basin (Leetaru and McBride, 2009). The Mt.…”

Section: Location and Geology Of The Mt Simon Sandstone And Ironton-mentioning

confidence: 99%

Isotopic and geochemical characterization of fossil brines of the Cambrian Mt. Simon Sandstone and Ironton–Galesville Formation from the Illinois Basin, USA

Labotka

Panno

Locke

et al. 2015

Geochimica et Cosmochimica Acta

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Geochemical and isotopic characteristics of deep-seated saline groundwater provide valuable insight into the origin and evolving composition, water-rock interaction, and mixing potential of fossil brines. Such information may yield insight into intra-and interbasinal brine movement and relationships between brine evolution and regional groundwater flow systems. This investigation reports on the d 18 O and dD composition and activity values, 87 Sr/ 86 Sr ratios and Sr concentrations, and major ion concentrations of the Cambrian-hosted brines of the Mt. Simon Sandstone and Ironton-Galesville Formation and discusses the evolution of these brines as they relate to other intracontinental brines. Brines in the Illinois Basin are dominated by Na-Ca-Cl-type chemistry. The Mt. Simon and overlying Ironton-Galesville brines exhibit total dissolved solids concentrations of $195,000 mg/L and $66,270 mg/L, respectively. The dD of brine composition of the Mt. Simon ranges from À34& to À22& (V-SMOW), and the Ironton-Galesville is $À53.2& (V-SMOW). The d 18 O composition of the Mt. Simon brine ranges from À5.0& to À2.8& (V-SMOW), and the Ironton-Galesville brine is $À6.9& (V-SMOW). The 87 Sr/ 86 Sr values in the Mt. Simon brine range from 0.7110 to 0.7116. The less radiogenic Ironton-Galesville brine has an average 87 Sr/ 86 Sr value of 0.7107. Evaluation of d 18 O and dD composition and activities and 87 Sr/ 86 Sr ratios suggests that the Mt. Simon brine is likely connate seawater and recirculating deep-seated brines that have been diluted with meteoric water and influenced by the dissolution of evaporites with a minimal halite contribution based on Cl/Br ratios. The IrontonGalesville brine is also likely originally connate seawater that mixed with other brines and meteoric waters, including possibly Pleistocene glacial recharge. The Ca-excess vs. Na-deficiency comparison with the Basinal Fluid Line suggests the Mt. Simon and Ironton-Galesville brines have been influenced by the effects of albitization and plot very close to the Basinal Fluid Line. These Cambrian-hosted brines appear to have a different albitization history than other regional basin brines and a strong component of seawater. The Ironton-Galesville brine appears more geochemically associated with other Illinois Basin brines than the Mt. Simon brine which appears more geochemically conservative. Comparisons with other extrabasinal North American brines suggest that the Michigan basin brines are geochemically most similar to the Mt. Simon brines with the exception of the influence from carbonates in the Michigan Basin. Analyses of 87 Sr/ 86 Sr values in the Mt. Simon brine suggest that brine Sr has isotopically equilibrated with clay minerals in the Lower Mt. Simon and underlying bedrock formations and not with whole rock suggesting the influence of recirculating brines from the crystalline basement. Overall, the geochemistry of these Cambrian-hosted brines suggests an evolution from original seawater-like compositions. This investigation shows that intracratonic b...

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“…The conceptual model subdivides the relatively thick Mt. Simon sandstone into three stratigraphic units (Leetaru and McBride [15]). The deepest unit was deposited in a braided river setting with some eolian deposition and has the highest porosity and permeability of the three stratigraphic units.…”

Section: Development Of the Geologic Modelmentioning

confidence: 99%

Development of a Basin-scale Model for CO2 Sequestration in the Basal Sandstone Reservoir of the Illinois Basin-issues, Approach and Preliminary Results

et al. 2013

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Numerical modeling of geologic carbon sequestration (GCS) is needed to guide efficient development and to understand potential consequences of its development. The Illinois Basin is a major geologic basin in north-central United States. To evaluate the feasibility of future, commercial-scale GCS within this basin, a basin-scale, flow model is being developed using TOUGH2-MP/ECO2N and refined as new geologic data become available. Current models include the Mt. Simon Sandstone and its caprock (Eau Claire Shale). The project goals are to evaluate the migration of injected CO2 and assess the pressure changes in this open reservoir in response to future GCS developments.

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Reservoir uncertainty, Precambrian topography, and carbon sequestration in the Mt. Simon Sandstone, Illinois Basin

Cited by 45 publications

References 8 publications

Detrital zircon geochronology of the Grenville/Llano foreland and basal Sauk Sequence in west Texas, USA

Detrital zircon geochronology of the Grenville/Llano foreland and basal Sauk Sequence in west Texas, USA

Isotopic and geochemical characterization of fossil brines of the Cambrian Mt. Simon Sandstone and Ironton–Galesville Formation from the Illinois Basin, USA

Development of a Basin-scale Model for CO2 Sequestration in the Basal Sandstone Reservoir of the Illinois Basin-issues, Approach and Preliminary Results

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