Alluvial slopes are piedmonts characterized by parallel steam channels rather than alluvial fans. They are common landforms in extensional basins of the south-western United States but have received little attention from geomorphologists or sedimentologists. Persistence of channellized flow across piedmonts, as opposed to sheetflooding due to loss of flow confinement on alluvialfan surfaces, di...

Keyword: Mars, surface Mars, climate Geological processes Observations of Mars from the surface and from orbit suggest that erosion rates over the last 3 Gyr (the Amazonian) have been as slow as 10 5 m/Myr and have been dominated by aeolian processes, while ancient (Noachian) erosion rates may have been orders of magnitude higher due to impact bombardment and fluvial activity. Amazonian-aged gl...

We analyze major landforms of the Lut Desert in Iran to provide a comprehensive source-to-sink picture aeolian systems on time scales from decades millions years. map modern sandflows, along which we evaluate volume and chronology associated with excavation mega-yardangs upwind formation giant dunes downwind. Sediment discharges deduced long-term erosion deposition are same order magnitude (105...

aeolian landforms are very sensitive to wind erosion. afforestation of degraded sandy land soils is regarded the most effective strategy against wind erosion. the aim of this study is to estimate decreasing in wind erosion rate by afforestation of these landforms. in this research, geomorphological areas have been used as homogeneous units. research data are including scores of petrology, terra...

Soil degradation is one of the most important obstacles to agricultural development. In past few years, there has been interest from research agencies and relevant ministries control soil in Egyptian lands. This study aims assess , productivity correlation coefficient between them Bilqas District, Dakahlia Governorate. To achieve this goal, data for area were taken a previous (2010) compared wi...

Topography fundamentally influences the distribution and morphology of aeolian landforms via modification surface wind flow creation space for sediment deposition. This has been observed at both landform (individual topographic dune forms) macro-landscape (sand sea) scales. Although previous studies have considered several aspects impact topography on landforms, patterns landscape-scale accumul...

The interaction of wind and water in semiarid and arid areas usually leads to low-frequency flash flood events in desert rivers, which have adverse effects on river systems and ecology. In arid zones, many aeolian dune-fields terminate in stream channels and deliver aeolian sand to the channels. Although aeolian processes are common to many desert rivers, whether the aeolian processes contribut...

HiRISE images of the lower member of the Medusae Fossae Formation (MFF) were used to identify characteristics of two specific landforms that are well expressed in this particular geologic unit; yardangs and sinuous ridges. Yardangs are wind-eroded ridges that are usually confined to arid environments where the bedrock materials can be easily eroded by windblown sand. Yardangs are common in the ...

Permian red beds of the De La Cuesta Formation in the Sierra de Narváez (Paganzo Basin, northwestern Argentina) are essentially composed of sandstones associated with mudstones and subordinate conglomerates. Facies distributions and stacking patterns indicate that these sediments resulted from the interaction between aeolian and ephemeral fluvial systems, and are represented by aeolian dune, dr...