Copyright (c) 2013 University of Nebraska - Lincoln All rights reserved. http://digitalcommons.unl.edu/diffendal Recent documents in Robert F. Diffendal, Jr., Publications en-us Thu, 24 Jan 2013 13:59:55 PST 3600 http://digitalcommons.unl.edu/diffendal/2 http://digitalcommons.unl.edu/diffendal/2 Fri, 26 Oct 2012 14:22:47 PDT This section of the Steamboat Trace Trail from markers 16 through 20 (Figure 1) offers especially good examples of geologic features in this part of Nebraska (Figure 2). These include: • The Missouri River, its valley, river cuts into the valley side, tributaries to the river, and flood control structures; • Sites of active and potential landslides; • Wind-deposited silts (called loess by geologists and soil scientists); • Glacial deposits; • Bedrock exposures of ancient sandstone, shale, conglomerate, and limestone; • Fossils of ocean- and land dwelling plants and animals; • Coal deposits.

]]> Robert F. Diffendal, Jr. http://digitalcommons.unl.edu/diffendal/1 http://digitalcommons.unl.edu/diffendal/1 Mon, 25 Jun 2012 13:21:54 PDT Armored mud balls and friable sand megaclasts occur in exposures of a complex Early Pleistocene sand and gravel alluvial fill which caps a strath terrace in southwestern Morrill County, Nebraska. The mudballs are limited to a tributary arroyo. The sand megaclasts occur in sediments deposited along a trunk stream. It is possible that the sand megaclasts were transported to the site in a frozen condition.

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