cross-bedded structure
1cross-bedding — a) Cross stratification in which the cross beds are more than 1 cm in thickness. b) A cross bedded structure; a cross bed. Compare: cross lamination. GG …
2ebb-and-flow structure — noun : stratified rock structure characterized by alternating horizontal and cross bedded layers thought to be produced by tidal ebb and flow …
3Intermontane Plateaus — Physiographic regions of the U.S. Interior See:legend For purposes of description, the physical geography of the United States is split into several major physiographic divisions, one being the Intermontane Plateaus. Please refer to the Geography …
4sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …
5Geology of Mars — Mars   Mars as seen by the Hubble Space Telescope Designations …
6glacial landform — ▪ geology Introduction any product of flowing ice and meltwater. Such landforms are being produced today in glaciated areas, such as Greenland, Antarctica, and many of the world s higher mountain ranges. In addition, large expansions of present… …
7Geology of the Canyonlands area — The exposed geology of the Canyonlands area is complex and diverse; 12 formations are exposed in Canyonlands National Park that range in age from Pennsylvanian to Cretaceous. The oldest and perhaps most interesting was created from evaporites… …
8Geology — Oceanic crustContinental Crust] Geology (from Greek: γη, gê , earth ; and λόγος, logos , speech lit. to talk about the earth) is the science and study of the solid and liquid matter that constitute the Earth. The field of geology encompasses the… …
9Ripple marks — Ancient wave ripple marks in sandstone, Moenkopi Formation, Capitol Reef National Park, Utah …
10Messinian salinity crisis — Events of the Cenozoic view • discuss •  …
