Construction Conditions, Natural Hazards Map, Villa Grove Quadrangle, Douglas County, Illinois

Computer generated mapIncludes text, engineering materials map, 3 tables, index to adjoining 7.5-minute quadrangles, and location mapIncludes bibliographical reference

Remote sensing and three-dimensional photogrammetric analysis of glaciofluvial sand and gravel deposits for aggregate resource assessment in McHenry County, Illinois, USA

Sand and gravel deposits, one of the most common natural resources, are used as aggregates mostly by the construction industry, and their extraction contributes significantly to a region\u27s economy. Thus, it is critical to locate sand and gravel deposits, and evaluate their quantity and quality safely and quickly. However, information on aggregate resources is generally only available from conventional two-dimensional (2-D) geologic maps, and direct field measurements for quality analysis at outcrops are time consuming and are often not possible due to safety concerns, or simply because exposures are too difficult to access. In this study, we presented a methodology to locate and evaluate aggregate resources, including the traditional methods of field surveying and borehole investigation for the entire McHenry County, Illinois, USA and new three-dimensional (3-D) photogrammetric models and remote sensing technologies at an active gravel pit. Thus acquired data sets allowed us to obtain key information for successful aggregate resource management: spatial occurrence, thickness, texture, paleocurrents, lithology and land use compatibility. In addition, remote sensing and photogrammetric techniques allowed for very quick and safe assessment of fundamental properties like particle size, paleocurrent direction and sorting, especially in inaccessible and/or unsafe outcrops. In summary, this paper demonstrated how remote sensing and photogrammetric technology can improve the efficiency and safety in resource assessment strategies, and the methodology used in our study can be applied to the development of autonomous mining and resource asset management elsewhere

Post-closure monitoring of surface settlement at a hazardous-waste landfill in West Central Illinois

Cover title."February 1990."Includes bibliographical references (p. 29-30)

Remote sensing and three-dimensional photogrammetric analysis of glaciofluvial sand and gravel deposits for aggregate resource assessment in McHenry County, Illinois, USA

Sand and gravel deposits, one of the most common natural resources, are used as aggregates mostly by the construction industry, and their extraction contributes significantly to a region\u27s economy. Thus, it is critical to locate sand and gravel deposits, and evaluate their quantity and quality safely and quickly. However, information on aggregate resources is generally only available from conventional two-dimensional (2-D) geologic maps, and direct field measurements for quality analysis at outcrops are time consuming and are often not possible due to safety concerns, or simply because exposures are too difficult to access. In this study, we presented a methodology to locate and evaluate aggregate resources, including the traditional methods of field surveying and borehole investigation for the entire McHenry County, Illinois, USA and new three-dimensional (3-D) photogrammetric models and remote sensing technologies at an active gravel pit. Thus acquired data sets allowed us to obtain key information for successful aggregate resource management: spatial occurrence, thickness, texture, paleocurrents, lithology and land use compatibility. In addition, remote sensing and photogrammetric techniques allowed for very quick and safe assessment of fundamental properties like particle size, paleocurrent direction and sorting, especially in inaccessible and/or unsafe outcrops. In summary, this paper demonstrated how remote sensing and photogrammetric technology can improve the efficiency and safety in resource assessment strategies, and the methodology used in our study can be applied to the development of autonomous mining and resource asset management elsewhere

Holocene loess in Illinois revealed by OSL dating: Implications for stratigraphy and geoarchaeology of the Midwest United States

Most uplands in Illinois are blanketed by late-Wisconsinan Peoria Loess, and the conventional wisdom is that little or no dust accumulation occurred during the Holocene (11.7 ka to present). In a recent effort to investigate if Illinois Holocene loess was deposited and preserved, we applied optically stimulated luminescence (OSL) dating to seven locations where loess is thick. These include four sites along the Mississippi River in westernmost Illinois, and three loess bluffs south of the Illinois River in central Illinois. Our results suggest that Holocene-aged loess is preserved along the Mississippi River in the state of Illinois; in contrast, no Holocene loess was found south of the Illinois River in the central portion of the state. In addition to its spatially limited distribution, Holocene loess thicknesses range only up to 1 m. Nevertheless, loess stratigraphy and OSL dating results provide the first Holocene loess reported east of the Missouri River. Our new finding also resolves the long-time archeological puzzle that a number of artifacts of several thousand years old were buried by upland loess along the Mississippi River. (C) 2018 Elsevier Ltd. All rights reserved

Evidence supporting Holocene loess in Illinois with new proxy data and historical, regional perspectives on loess deposition in the upper Mississippi River Valley

We thank Grimley et al. (2019) for their constructive comments on our publication on Holocene loess in Illinois revealed by Optically Stimulated Luminescence (OSL) dating (Miao et al., 2018) in the journal Quaternary Science Reviews. Their skepticism on the preservation of Holocene loess in Illinois provides us with a good opportunity to clarify several key issues: pedoturbation (including bioturbation), the methodology of soil research and our OSL dating results. In addition, we will discuss the more fundamental issue behind this debate: what controls loess deposition in the Midwestern USA, direct glacial sediment supply or broader-scale climate change? Finally, we also report new high-resolution grain size, magnetic susceptibility and color data from one of our Holocene loess sites. (C) 2019 Elsevier Ltd. All rights reserved

Stereophotographic Measurement of Joint and Bedding Orientation at Thornton Quarry, Illinois

Ope

Illinois pilot erosion-rate data study

"Submitted to: Federal Emergency Management Agency, Office of Risk Assessment, Federal Insurance Administration, Washington, D.C.""Final contract report for: FEMA Assistance Award No. EMW-91-K-3575, Report 1 of 2"Cover title."Accompanies Report 2 entitled: Inventory of federal and state historical maps, charts, and vertical aerial photographs applicable to erosion-rate studies along the Illinois coast of Lake Michigan""January 1993"Includes bibliographical references (leaves 136-141)