(冰川)[1],这这种情况下,[巴托罗冰川][2]在喀喇昆仑,巴基斯坦。道路像模式形成的冰川慢慢流向低海拔从附近的冰帽或[堆积区][3]。岩石和泥土被冰内和表面。仔细一看,才发现很少表面光滑,但往往深沟,[cravasses][4],和融水频道是随着冰川形成的。在人类时间尺度,冰川慢慢爬,但从地质角度看他们快[5]。[! [https://en.wikipedia.org/wiki/Glacier /媒体/文件:GornerGlacier_002.jpg] [6]] [6] _Closeup冰川的冰隙。(通过Roylindman en。维基百科,CC冲锋队3.0)_在冰川下,形成一个u型的山谷冰川侵蚀的基石。根据动力学的冰川侵蚀,冰川也显得干净,没有表面沉积物。[![Private photo][7]][7] _Large glacier without sediments, but also with a very uneven surface due to the movements of the glacier (Wilkes Land)._ [1]: https://nsidc.org/cryosphere/glaciers/questions/what.html [2]: https://en.wikipedia.org/wiki/Baltoro_Glacier [3]: http://www.antarcticglaciers.org/modern-glaciers/introduction-glacier-mass-balance/ [4]: https://en.wikipedia.org/wiki/Crevasse [5]: https://www.youtube.com/watch?v=RXROvFbEXKE [6]: https://i.stack.imgur.com/s7QLn.jpg [7]: https://i.stack.imgur.com/omQa1.jpg