...Lindrith Cordell; Daniel H. Knepper Abstract Aeromagnetic data from the Rolla 1 degrees X2 degrees quadrangle, Missouri, displayed as a small-scale, grey-tone image, provide a lucid picture of basement features beneath sedimentary-rock cover. Late-stage "tin" granite plutons of the Proterozoic St...

...L. Cordell Abstract Regional geologic, stratigraphic, geochemical, remote sensing, and geophysical studies of the Rolla 1 degrees X 2 degrees quadrangle, Missouri, are in progress by the U. S. and Missouri Geological Surveys. Reconnaissance gravity data are available throughout the quadrangle...

... derived from aerial gamma-ray data covering the Rolla Quadrangle were color coded and digitally overlaid onto a Landsat image, a shaded relief image of topography, and the geologic map of Missouri. Cambrian Lamotte Sandstone and Bonneterre Dolostone, which crop out adjacent to the Precambrian exposures...

... lake was established using 1964 and 1971 USDA aerial photos accessed at the Missouri Geological Survey in Rolla, MO, (inventory numbers ASCS 5-64DC and ASCS 4-71DC, respectively) for Pine Forest Lake, and United States Geological Survey Rolla Quadrangle maps for Bray Area Lake (USGS 1938 , 1951...

... correlations are approximately the same as those used by Wallace Lee (1913) in his study of the formation in the Rolla Quadrangle. The Roubidoux formation has been divided into two zones on the basis of type of residues and facies sedimentation. Locally, in the area of the type Roubidoux section, more zones...

... Resources Rolla, MO In. 146 – 153 . Schultz , A.P , 1993 , Map Showing Surficial Geology of the St. Louis 30×60 Minute Quadrangle , U.S. Geological Survey Open-File Report 93-288, scale 1:100,000 . Shirley , D.J , and Hampton , L.D , 1978 , Shear wave measurements in laboratory...

... assessment in the midcontinent. © 1997 by the Seismological Society of America 1997 Missouri Department of Natural Resources University of Missouri-Rolla Missouri Department of Natural Resources University of Missouri-Rolla Missouri Department of Natural Resources...

... measurements and more than 1400 SPT profiles (taken from engineering borings), surficial and bedrock geologic maps, and the depth‐to‐bedrock maps. The study area encompasses 12 U.S. Geological Survey ( USGS ) 7.5 minute quadrangles (a land area of 1800  km 2 ) in the greater St. Louis area...

.... Francois Mountains terrane. Cordell (1979) presented results of a geophysical study of ground gravity and aeromagnetic data over the Rolla 1° × 2° quadrangle, which covers most of the exposed parts of the basement terrane. In his research, Cordell recognized a major NW-trending gravity low...

... situation, such as that on Little Tom Sauk Creek in the southeastern corner of the Edgehill Quadrangle, also no longer seem bizarre. In the Rolla Quadrangle, Phelps County, in the central Ozark region of Missouri, Lee (1913) described several large rock masses, locally called “blossom rocks...

... of three major Mississippi Valley districts , in International Conference on Mississippi Valley Type Lead-Zinc Deposits , G. Kisvarsanyi , S.K. Grant , W.F. Pratt , and J.W. Koenig , eds., University of Missouri-Rolla , 27 – 60 . Hildenbrand , T.G. , and J.D. Hendricks...

... April 2004. The proceedings consist of an abstract volume and two CD-ROM's containing 331 papers and 12 general reports. Dr. Shamsher Prakash, University of Missouri, 1870 Miner Circle, 308 Civil Engineering, Rolla, MO 65409, USA; telephone +1-573-341-4489; +1-573-341-4489/4729; e-mail [email protected]...

... . Brown , V.M. ( 1983 ): The Precambrian Volcanic Stratigraphy and Petrology of the Des Arc NE 7 1/2 Minute Quadrangle, South Central St. Francois Mountains, Missouri . Ph.D. dissertation, Univ. Missouri–Rolla , Rolla, Missouri . Brown , V.M. ( 1984 ): Chemical signatures...

... of Geology and Land Survey , Rolla, MO , scale 1: 24,000. Gaunt D. Carr T. Starbuck E. 2009b , Surficial Geologic Map of the Grafton 7.5-Minute Quadrangle St...

... Geological Survey Open File Report OFR-01-98-GS . Pratt , W.P , Middendorf , M.A , Satterfield , I.R , and Gerdemann , P.E , 1992 , Geologic Map of the Rolla 1° by 2° Quadrangle , U.S. Geological Survey Map I-1998 . Thacker , J.L , 1979 , Preliminary Isopach Maps...

... that on the pre-Pennsylvanian erosion surface around Rolla, on which steep hills, with a local relief of more than 150 feet, have been described, there is clear evidence of contemporaneous landsliding, with the production of peculiar sharp local crumpling. The next younger formation, the Van Buren, rests...

... in the Rolla quadrangle and the southeast Missouri lead district , Economic Geology 74 , 1,383 – 1,394 . Cox , R.T. ( 1995 ). Intraplate Deformation during the Appalachian-Ouachita Orogeny as Recorded by Mesoscale Structures on the Ozark Plateau of North America , Ph.D. Dissertation, University...

.... , and Whitney , H. , 1988 , Tectonic and stratigraphic control of regional subsurface geochemical patterns, midcontinent, U.S.A : in Kisvarsanyi , G. , and Grant , S.K. , eds., Tectonic control of ore deposits and the vertical and horizontal extent of ore systems : Rolla , University...

.... (Modified from Carpenter Ridge Quadrangle, USGS, 1954 ) The active failure is approximately 1,000 ft (300 m) in width across the slope and is estimated to be between 1,500 and 2,000 ft (450–600 m) in length along the slope, with approximately half of the landslide mass submerged below the reservoir...