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ETCHPLAIN

Etchplain

Plain where the bedrock has been subject to considerable subsurface weathering

An etchplain is a plain where the bedrock has been subject to considerable "etching" or subsurface weathering. Etchplanation is the process forming etchplains

Etchplain

Tor (rock formation)

Large, free-standing rock outcrop on a gentle hill summit

100–150,000 years. Bornhardt – Large, dome-shaped, steep-sided, bald rock Etchplain – Plain where the bedrock has been subject to considerable subsurface

Tor (rock formation)

Tor_(rock_formation)

Inselberg

Isolated, steep rock hill on relatively flat terrain

in Africa and South America are assumed to be the vestiges of eroded etchplains. Clusters of inselbergs, called inselberg fields and inselberg plains

Inselberg

Geography of Africa

Africa is made up of plains of the pediplain and etchplain type often occurring as steps. The etchplains are commonly associated with laterite soil and

Geography of Africa

Geography_of_Africa

Glossary of landforms

relief is sharp Erg – Broad area of desert covered with wind-swept sand Etchplain – Plain where the bedrock has been subject to considerable subsurface

Glossary of landforms

Glossary_of_landforms

Sudetes

Mountain range in Germany, Poland and the Czech Republic

Weathering during the Cenozoic led to the formation of an etchplain in parts of Sudetes. While this etchplain has been eroded various landforms and weathering

Sudetes

Planation surface

Large-scale land surface that is almost flat

specific planation surface types and processes remain controversial. Etchplains are weathered planation surfaces. Large planation surfaces, like the African

Planation surface

Planation_surface

Pediplain

Extensive plain formed by the coalescence of pediments

South Sudan Erosion surface – Natural surface created by rock erosion Etchplain – Plain where the bedrock has been subject to considerable subsurface

Pediplain

Ethiopian Highlands

Mountain range in northern Ethiopia

planation surfaces in northern Ethiopia do not appear to be pediplains nor etchplains. Spatial distribution of temperature in Ethiopia is determined primarily

Ethiopian Highlands

Ethiopian_Highlands

Peneplain

Low-relief plain formed by protracted erosion

classification scheme for peneplains: Planation surfaces Pediplain Inselberg plain Etchplain Hilly relief Etched hilly relief Rhodes Fairbridge and Charles Finkl argue

Peneplain

Geography of Zimbabwe

Limpopo river systems. The flattish watershed region is part of an ancient etchplain called the African Surface covers large swathes of the continent. While

Geography of Zimbabwe

Geography_of_Zimbabwe

Glossary of geography terms (A–M)

backwash draining from a beach by material brought ashore by the sea. etchplain A plain beneath which the bedrock has been subjected to considerable subsurface

Glossary of geography terms (A–M)

Glossary_of_geography_terms_(A–M)

African Surface

Land surface formed by erosion covering large swathes of Africa

surface. According to the 2008 study the African Surface is made up by etchplains formed between 70 and 40 million years ago. In this sense the existence

African Surface

African_Surface

Julius Büdel

German geomorphologist

Europe Büdel concluded that in Late Cretaceous to Early Pliocene times etchplains formed. Then in Late Pliocene to Early Pleistocene times a transition

Julius Büdel

Julius_Büdel

Geology of South Africa

deformation. It was during the African cycle, 70–40 million years ago that the etchplains that characterize the African Surface formed. By the Miocene the African

Geology of South Africa

Geology_of_South_Africa

Geology of Ethiopia

Africa planation surfaces in Ethiopia do not appear to be pediplains nor etchplains. In other words, this surface was subsequently buried beneath sediments

Geology of Ethiopia