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Meander erosional banks of fifth and sixth order southwestern Wisconsin streams having drainage areas of twenty square miles (30 km2) or less frequently reveal three distinct sedimentary sequences. The basal unit of coarse textured debris is thought to represent bed load sediment of a prior channel active near the terminus of a mid-Holocene drought about 6,000 years B. P. A silty clay series over the coarse layer is interpreted to have been derived by vertical accretion on a paleo floodplain during a climatic shift toward more humid conditions of the late Holocene. Distinctly laminated silt loam sediments produced by vertical accretion extend from the middle series to the current surface, and mainly result from increased flooding related to modern land use practices. The recent man-induced change in channel morphology is analogous to natural adjustments produced by Holocene climatic fluctuation, and suggests that temporal aspects of channel and floodplain evolution may be described by a step function model. KEY WORDS: Biogeomorphic response, Climatic change, Floodplain, Holocene, Valley alluviation, Wisconsin.HE morphology of stream channels and T floodplains is controlled by the physical environment of the contributing drainage basin. Maintenance or change of an established system of alluvial morphology is highly regulated by the rates of surface runoff and sediment yield. The purpose of this study is to analyze the fluvial adjustments that have occurred in response to known or presumed changes in surface runoff and sediment yield.The study area is restricted to southwestern Wisconsin valleys of fifth and sixth order having drainage areas of twenty square miles (30 km2) or less. Meander erosional banks of the fifth and sixth order streams frequently reveal three distinct sedimentary sequences : basal coarse gravel overlain by silty clay in turn overlain by recent alluvium. I will attempt to demonstrate that the lower and intermediate series are products of channel and floodplain response to

Structured adsorbents, especially in the form of monolithic contactors, offer an excellent gas-solid contacting strategy for the development of practical and scalable CO capture technologies. In this study, the fabrication of three-dimensional (3D)-printed 13X and 5A zeolite monoliths with novel structures and their use in CO removal from air are reported. The physical and structural properties of these printed monoliths are evaluated and compared with their powder counterparts. Our results indicate that 3D-printed monoliths with zeolite loadings as high as 90 wt % exhibit adsorption uptake that is comparable to that of powder sorbents. The adsorption capacities of 5A and 13X monoliths were found to be 1.59 and 1.60 mmol/g, respectively, using 5000 ppm (0.5%) CO in nitrogen at room temperature. The dynamic CO/N breakthrough experiments show relatively fast dynamics for monolithic structures. In addition, the printed zeolite monoliths show reasonably good mechanical stability that can eventually prevent attrition and dusting issues commonly encountered in traditional pellets and beads packing systems. The 3D printing technique offers an alternative, cost-effective, and facile approach to fabricate structured adsorbents with tunable structural, chemical, and mechanical properties for use in gas separation processes.