Geomorphology

Geomorphology: (geo – earth, morph – form, ology – science)   The systematic study of the earth’s relief features; a science which treats the origin and systematic development of all types of landforms.  Source: Physical Geography, Third Edition, Arthur N Strahler.

There were interesting examples of land formation, both old and new, as we cruised the upper gorges of the lake formed by the Three Gorges Dam. Most of the rock in this area is limestone.

Tilting layers of sediment and caves carved by acidic water (or by recent river-dwellers to hide and get out of the elements?)

Tilting layers of sediment and caves carved by acidic water (or by recent river dwellers to hide and get out of the elements?)

A vertical crack beside a section of sediment that appears to have remained horizontal.

A vertical crack beside a section of sediment that appears to have remained horizontal.

A crevice beginning to form, probably from water dripping from above.  This is how a stream/river/gorge eventually forms.

A crevice beginning to form, probably from water dripping from above. This is how a stream/river/gorge eventually forms.

Are these caves man made or the result of being eaten away by water?

Are these caves man made or the result of being eaten away by water?

A close up of the "caves" from the previous photo.

A close up of the “caves” from the previous photo.

Evidence of twisting and folding of the mountains.  And in the lower half, evidence of river pollution.

Evidence of twisting and folding of the mountains. And in the lower half, evidence of river pollution.

There was twisting in several different directions, moving the sediments into half-circular shapes. You can see it in the upper right of the photo and behind the vegetation at the bottom as well as in the exposed band in the middle.

There was twisting in several different directions, moving the sediments into half-circular shapes. You can see it in the upper right of the photo and behind the vegetation at the bottom as well as in the exposed band in the middle.

Even though I have a degree in Geography, I have to confess to only having studied geomorphology as a small part of an introductory level physical geography course 44 years ago.

Next Post: Ships and boats on the Yangtze River.

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One comment on “Geomorphology

  1. Denis says:

    Well done Joan, you pass…again. Denis

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