In sand-bedded rivers, dunes dominate sediment transport and flow resistance. Dunes are
also commonly preserved in fluvial deposits as cross-stratified units that record their size …

Ripples arise spontaneoulsy from sandy beds subjected to winds sufficient to cause the
saltation of surficial grains. While the initially fastest growing wavelengths are 4–6 times the …

INTRODUCTION Remote observational data suggest that large bodies of standing water
existed on the surface of Mars in its early history. This would have required a much wetter …

It is more than half a century since the publication of RA Bagnold's classic book The physics
of blown sand and desert dunes, and it is a tribute to the quality of Bagnold's work that many …

The study and interpretation of the textures, sedimentary structures, fossils, and lithologic
associations of sedimentary rocks on the scale of an outcrop, well section, or small segment …

Now enhanced with colour photographs and illustrations, this thoroughly revised fourth
edition of Sedimentary Structures enhances its status as a major textbook in geology. Since …

Sedimentary rocks at Eagle crater in Meridiani Planum are composed of fine-grained
siliciclastic materials derived from weathering of basaltic rocks, sulfate minerals (including …

Untitled Page 1 Page 2 GEOMORPHOLOGY OF DESERT DUNES Sand dunes cover up to a
quarter of many desert regions. Determining the factors that determine their shape, size and …

Nonrenewable energy resources, comprising fossil fuels and uranium, are not ran domly
distributed within the Earth's crust. They formed in response to a complex array of geologic …

Three well-exposed outcrops in the Kayenta Formation (Lower Jurassic), near Dove Creek
in southwestern Colorado, were studied using lateral profiles, in order to test recent …