粘土沉积分布在古代的火山表面和坑坑洼洼的高原地区，其中一些显然是最近才由于侵蚀而暴露出来的。
The clay deposits are scattered all over, in ancient volcanic surfaces and heavily cratered highland regions, some of which have apparently been exposed by erosion only recently.
根据Kemmerling说，在他展开勘查的七十年前，这个隔离岩石壁与围绕火山边缘的岩石一样高，但是在他1929年来此前，岩石壁已经相继被侵蚀了。
According to Kemmerling this separating wall was as high as the surrounding crater rim 70 years before his survey, but it had subsequently eroded down by the time of his visit (Kemmerling, 1929).
这是火星塔尔西斯盾状火山构造地区被风侵蚀的地貌，照片由美国宇航局的高分辨率科学成像实验相机摄于2010年7月31日。
Windblown features are visible on this shield volcano structure in Mars' Tharsis Region seen by NASA's HiRISE camera on July 31st, 2010. (NASA/JPL/University of Arizona)
由于侵蚀和海底的下沉，经过地质时代的变迁，中心的火山已经不见踪影，而只留下珊瑚礁环绕或覆盖在沉入海底的火山岛上。
Over geologic time the central volcano becomes extinct, followed by erosion and subsidence beneath the sea surface, leaving the coral reefs as a ring around (or cap on) the submerged island remnant.
它也是在一个火山穹丘硬化和逐步侵蚀中，剥离出洋葱状岩石层形成的。
It formed when a volcanic dome hardened and gradually eroded, exposing the onion-like layers of rock.
尽管它看起来像是一个陨石撞击坑，它是在一个火山穹丘硬化和逐步侵蚀中，剥离出洋葱状岩石层的结果。
Although it resembles an impact crater, it formed when a volcanic dome hardened and gradually eroded, exposing the onion-like layers of rock.
在干德拉格普1号峰的西北面可以看见一个已经熄灭的泥火山的侵蚀边缘；其东面边缘看起来较西面被侵蚀得更为明显。
To the northwest of Chandragup I, the eroded rim of an extinct mud volcano is visible; its eastern rim is more noticeable than its western rim.
澳大利亚的火山因侵蚀而风化，河流深深地穿过岩石的坡面，冲刷出令人惊叹称奇的沟壑和峡谷。
Australian volcanoes have eroded and rivers have cut deeply through long rocky cliffs, carving great gaps and canyons.
就如我先前所提到的，在公园内有许多独特遭侵蚀的火山岩，这是一串岩石的黑色影像照片。
As I mentioned before there are so many uniquely eroded volcanic rocks in the park and here is one silhouette picture of a bunch of rocks.
要是熔岩不断喷发而出，且累积的速度比侵蚀还快，像奇劳亚这样火山的坡度便会越来越陡峭， 最后势必难以招架这样的坍塌。
The slopes of volcanoes such as Kilauea become steep and vulnerable to this kind of collapse when the lava from repeated eruptions builds them up more rapidly than they can erode away.
形成是侵蚀遗迹是一个火山塔称为凝灰岩锥。
The formation is the eroded remains of a volcanic tower known as a tuff cone.
他们周围的软物质已被侵蚀和吹制出的东北风火山口，现在的形式对周围环境的暗条纹。
The softer material around them has been eroded and blown out of the crater by north-easterly winds and now forms dark streaks on the surroundings.
他们周围的软物质已被侵蚀和吹制出的东北风火山口，现在的形式对周围环境的暗条纹。
The softer material around them has been eroded and blown out of the crater by north-easterly winds and now forms dark streaks on the surroundings.
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