Origin and Evolution of Dry Valleys South of Ronkonkoma Moraine

Glacier advance during Marine Isotope Stage 11 in the McMurdo Dry Valleys of Antarctica

We mapped six distinct glacial moraines alongside Stocking Glacier in the McMurdo Dry Valleys, Antarctica. Stocking Glacier is one of several alpine glaciers in the Dry Valleys fringed by multiple cold-based drop moraines. To determine the age of the outermost moraine, we collected 10 boulders of Ferrar Dolerite along the crest of the moraine and analyzed mineral separates of pyroxene for cosmo...

Pedosedimentary Evolution and Site Formation Processes in Mirak Mound 8, South of Semnan

Mirak is one of the open-air Paleolithic sites in the Iranian Central Plateau and the only Iranian archaeological open-air site which has been excavated extensively. The site is comprised of 8 mounds, located in a dry floodplain some kilometers south of Semnan in the northern fringes of the Iranian Central Desert, aka. Dash-I Kavir. Mirak mound no. 8 was selected for the excavation. The mound i...

The Origin and Evolution of Oriented-network Polygonally Patterned Ground; the Antarctic Dry Valleys as Mars Analogue

Figure 2—Upper Mullins Valley, ADV. Arrows point to oriented polygon fields with radial/orthogonal geometry. Down valley is to image right. THE ORIGIN AND EVOLUTION OF ORIENTED-NETWORK POLYGONALLY PATTERNED GROUND; THE ANTARCTIC DRY VALLEYS AS MARS ANALOGUE. Joseph S. Levy, James W. Head, and David R. Marchant; 1 Dept. Geological Sciences, Brown University, Providence RI, 02912, 2 Department of...

Sources of Water for Gulley Formation in the Antarctic Dry Valleys: Multi- Year Analysis of Precipitation and Temperature in the South Fork of Upper Wright Valley and Implications for the Origin of Gullies on Mars

Misfit Streams and the Possible Glacial Origin of Their Valleys

A study of misfit streams and meandering depressions developed in ground moraine deposits near Dayton, Ohio has indicated that streams are re-establishing old stream courses, which persist as buried channels previously carved into bedrock. The erosion of deep meandering channels in bedrock appears consistent with melt-water streams let down through glacial ice. Such channels would subsequently ...