波痕
波痕（英語：）是由於流體（水或风）的流動在沉积物表面形成的波状起伏的構造。一般由沉积物表层的砂粒在迁移过程中形成在层面上的沙波。 波痕有三種：流水波痕（Current formed ripples）：呈不对称状，波谷与波峰均较圆滑，陡坡倾向与流向一致[1] [2]。浪成波痕（wave-formed ripples）：对称的浪或波痕，波峰尖、波谷圆滑[3]。风成波痕（Wind-formed ripples）：呈不对称状，波谷宽阔，波峰圆滑，陡坡倾向与风向一致[4]。
Capitol Reef National Park猶他州
参考文献
- Boggs Jr., Sam. (2006) Principles of Sedimentology and Stratigraphy, 4th ed
- Easterbrook, Don J. Surface processes and landforms. Upper Saddle River, N.J: Prentice Hall, 1999. Print. ISBN 0-13-860958-6 pp. 479-480
- Nichols, Gary. (2009) Sedimentology and Stratigraphy, Wiley, ISBN 978-1405135924
- Greeley, Ronald, and James D. Iversen. Wind as a Geological Process On Earth, Mars, Venus and Titan (Cambridge Planetary Science Old). New York: Cambridge UP, 1987. ISBN 0-521-35962-7 pp. 153-154
外部链接
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维基共享资源上的相关多媒体资源：波痕 |
- Ripple Marks and Uniformitarianism （页面存档备份，存于）
- Unidirectional flow: Sand ripples and grain distribution 2D model （页面存档备份，存于）
- Unidirectional flow: Sand ripples and topography 2D model （页面存档备份，存于）
- Waves: Sand ripples and grain distribution 2D model （页面存档备份，存于）
- Waves: Sand ripples and topography 2D model （页面存档备份，存于）
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