parallel ripple marks

См. также в других словарях:

• Ripple marks — Ripple Rip ple, n. 1. The fretting or dimpling of the surface, as of running water; little curling waves. [1913 Webster] 2. A little wave or undulation; a sound such as is made by little waves; as, a ripple of laughter. [1913 Webster] {Ripple… …   The Collaborative International Dictionary of English

• ripple marks — plural noun a system of parallel wavy ridges and furrows left on sand, mud, or rock by the action of water or wind …   English new terms dictionary

• Ripple — Rip ple, n. 1. The fretting or dimpling of the surface, as of running water; little curling waves. [1913 Webster] 2. A little wave or undulation; a sound such as is made by little waves; as, a ripple of laughter. [1913 Webster] {Ripple grass}.… …   The Collaborative International Dictionary of English

• Ripple grass — Ripple Rip ple, n. 1. The fretting or dimpling of the surface, as of running water; little curling waves. [1913 Webster] 2. A little wave or undulation; a sound such as is made by little waves; as, a ripple of laughter. [1913 Webster] {Ripple… …   The Collaborative International Dictionary of English

• sedimentary 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… …   Universalium

• Sedimentary rock — Middle Triassic marginal marine sequence of siltstones (below) and limestones (above), Virgin Formation, southwestern Utah, USA Sedimentary rock are types of rock that are formed by the deposition of material at the Earth s surface and within… …   Wikipedia

• Geology of the Capitol Reef area — [ Waterpocket Fold is the major geographic feature in the area of the park. This view is from above Capitol Reef Scenic Drive looking back at the west face of the broken and eroded fold.] The exposed geology of the Capitol Reef area presents a… …   Wikipedia

• dating — I In geology and archaeology, the process of determining an object s or event s place within a chronological scheme. Scientists may use either relative dating, in which items are sequenced on the basis of stratigraphic clues (see stratigraphy) or …   Universalium

• Geology of Alderley Edge — Infobox Mountain Name = Alderley Edge Photo = Stormy Point 1993.jpg Caption = Stormy Point Elevation = 183 m (600 ft) Location = Cheshire, ENG Range = Prominence = Coordinates = Topographic OS Landranger 118 Grid ref UK = SJ870760 Grid ref… …   Wikipedia

• Carboniferous Period — Interval of geologic time 354–290 million years ago, marked by great changes in world geography. All the landmasses drew closer together as a result of tectonic plate movements. The supercontinent Gondwana occupied much of the Southern Hemisphere …   Universalium

• Precambrian time — Interval of geologic time from с 3. 8 billion years ago, the age of the oldest known rocks, to 544 million years ago, the beginning of the Cambrian Period. This interval represents more than 80% of the geologic record and thus provides important… …   Universalium