That a glacier once flowed down the King Valley is shown by glacial deposits in t,his valley and in the adjacent Nelson, Comstock and Linda Valleys. East of Mt. Lyell iL was at least 1,000 feet thick, but south of this point it decreased rapidly in thiekness due to widening of the valley and to loss of ice to the distributary glaciers in the Linda and Nelson Valleys. During a brief maximum phas...

[1] Restoration of the dichotomy boundary to its original position to assess its origin requires a thorough knowledge of processes responsible for its degradation and retreat. The unique fretted terrain, located along the DeuteronilusProtonilus Mensae northern mid-latitude portion of the boundary, has been long held to provide clues to dichotomy degradation processes. We use new spacecraft data...

The meteorological characteristics and hydrological response of an extreme warm, and cold summer in the McMurdo Dry Valleys are compared. The driver behind the warmer summer conditions was the occurrence of down-valley winds, which were not present during the colder summer. Occurrence of the summer down-valley winds coincided with lower than typical mean sea level pressure in the Ross Sea regio...

A numerical model was developed for simulating the formation of U-shaped glacial valleys by coupling a two-dimensional ice flow model with an erosion model for a transverse cross section. The erosion model assumes that the erosion rate varies quadratically with sliding speed. We compare the two-dimensional model with a simple shallow-ice approximation model and show the differences in the evolu...

Detailed field mapping of moraines in the Sagarmatha (Everest) region of the Nepal Himalayas indicates that there are four stages of glacial advance. The Lobuche stage moraines are fresh and sparsely covered with vegetation, which contact the dirty terminus of glaciers. The Thuklha stage moraines which are covered with soil and vegetation are located just outside of the Lobuche stage moraines. ...

The development of relief in glaciated landscapes plays a crucial role in hypotheses relating climate change and tectonic processes. In particular, glaciers can only be responsible for peak uplift if they are capable of generating significant relief in formerly nonglaciated landscapes. Previous work has suggested that relief in glaciated landscapes should scale with the thickness of the ice. He...

Introduction: Fretted terrain and fretted channels are very well developed in the northern part of Arabia Terra [1] and are the site of development of lineated valley fill (LVF) and lobate debris aprons (LDA) [2-3]. The detailed geological history and chronology of this region provide [4] a framework for the interpretation of modification processes operating on and near the dichotomy boundary. ...

The Rivoli-Avigliana end moraine system (Italian Western Alps) hosts an important stratigraphic archive of Pleistocene glaciations. A new geological map provides a 3D architecture the that reveals complex glacial, alluvial and lacustrine units. Six glacial units were recognized. During deposition four older (Early-Middle Pleistocene) morphology valley outlet had different drainage pattern from ...