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Showing 1 to 5 of 5 for “"Novaculite"”.
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Geochemical Analysis of Mississippian Cherts and Devonian-Mississippian Novaculites, Southern Midcontinent Region
… and the Devonian-Mississippian Arkansas Novaculite in the southern midcontinent. Mississippi Valley-type Pb-Zn ore deposits in the Tri-State District and the Northern Arkansas District were deposited by hydrothermal fluids, and highly radiogenic Pb isotope ratios suggest a genetic …
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Structural Geology of the Caddo Gap Area, Ouachita Mountains, Arkansas
… (Lower, Middle and Upper) of the Arkansas Novaculite. Major folds within the study area include the Nelson Mountain Anticline and two synclinal folds (“South Caddo Mountain” and “Arrowhead Mountain”) where south-dipping Novaculite has been folded around very sharply in map view, resulting …
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Investigating the Mechanics and Chemistry of Sickle Polish Development
… Five experimental sickles containing flint and novaculite blades were used to harvest high and low moisture content rye and common fescue and associated field weeds. The differences in the development of sickle gloss were examined. High moisture content plants create thick, smooth fields of …
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A case study in application of robust design methods to waterjet processes in overhaul and repair of jet engine components
… in place of a wet abrasive blast using a novaculite slurry solution. The process used to develop high-pressure waterjet cleaning procedures was based on Robust Design methodology. Robust Design uses orthogonal arrays which allow a large number of variables to be studied with a small number …
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Field-based Constraints on the Origin of the Benton Uplift, Ouachita Mountains
… by asymmetric z-folds defined by the Arkansas Novaculite and thrust-duplication of north-dipping Paleozoic strata. Out-of-sequence backthrusting is attributed to internal wedge thickening as explained by the critical taper model (Davis et al., 1983; Dahlen, 1990). The Ouachita Mountains …