波痕
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波痕(英语:ripple marks)是由于流体(水或风)的流动在沉积物表面形成的波状起伏的构造。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。 波痕有三种: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]。
参考文献
编辑- ^ 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
编辑- Ripple Marks and Uniformitarianism (页面存档备份,存于互联网档案馆)
- Unidirectional flow: Sand ripples and grain distribution 2D model (页面存档备份,存于互联网档案馆)
- Unidirectional flow: Sand ripples and topography 2D model (页面存档备份,存于互联网档案馆)
- Waves: Sand ripples and grain distribution 2D model (页面存档备份,存于互联网档案馆)
- Waves: Sand ripples and topography 2D model (页面存档备份,存于互联网档案馆)