Late Cenozoic landform development in East Africa: The role of near base level planation within the dynamic etchplanation concept

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)

Abstract

The Late Cenozoic landform development history of East Africa is explained insufficiently by the available landform genesis concepts. Although the 'dynamic etchplanation' concept is well able to explain the development of lithologically controlled relief, its explanation of planated areas does not fit reconstructed characteristics of the East African landscape history. Late Cenozoic lain formation in East Africa was an episodic event caused by contemporaneous erosion and deposition near base level. It is therefore proposed to elaborate the etchplanation concept with fluvial dynamics. Late Cenozoic planation events in East Africa were triggered by a major base level rise due to the combined effects of eustatic sea level rise and crustal movements associated with rift valley dynamics. The relative base level rise caused a sequence of active fluvial lateral aggradation and erosion within the landscape followed by lagoonal and sometimes even marine conditions shaping extensive plains. The interacting fluvial and etchplanation dynamics make a more comprehensive theory to explain the Late Cenozoic landscape development in East Africa.

Original languageEnglish
Pages (from-to)25-40
Number of pages16
JournalZeitschrift für Geomorphologie, Supplementbände
Volume106
Publication statusPublished - 1 Dec 1996
Externally publishedYes

Fingerprint

planation
East Africa
landform
erosion
landscape history
episodic event
crustal movement
event
aggradation
history
rift zone
relief

Cite this

@article{26fd3318deaf473284ecef2e483ad6dc,
title = "Late Cenozoic landform development in East Africa: The role of near base level planation within the dynamic etchplanation concept",
abstract = "The Late Cenozoic landform development history of East Africa is explained insufficiently by the available landform genesis concepts. Although the 'dynamic etchplanation' concept is well able to explain the development of lithologically controlled relief, its explanation of planated areas does not fit reconstructed characteristics of the East African landscape history. Late Cenozoic lain formation in East Africa was an episodic event caused by contemporaneous erosion and deposition near base level. It is therefore proposed to elaborate the etchplanation concept with fluvial dynamics. Late Cenozoic planation events in East Africa were triggered by a major base level rise due to the combined effects of eustatic sea level rise and crustal movements associated with rift valley dynamics. The relative base level rise caused a sequence of active fluvial lateral aggradation and erosion within the landscape followed by lagoonal and sometimes even marine conditions shaping extensive plains. The interacting fluvial and etchplanation dynamics make a more comprehensive theory to explain the Late Cenozoic landscape development in East Africa.",
author = "A. Veldkamp",
year = "1996",
month = "12",
day = "1",
language = "English",
volume = "106",
pages = "25--40",
journal = "Zeitschrift f{\"u}r Geomorphologie",
issn = "0372-8854",
publisher = "Schweizerbart'sche Verlagsbuchhandlung",

}

TY - JOUR

T1 - Late Cenozoic landform development in East Africa

T2 - The role of near base level planation within the dynamic etchplanation concept

AU - Veldkamp, A.

PY - 1996/12/1

Y1 - 1996/12/1

N2 - The Late Cenozoic landform development history of East Africa is explained insufficiently by the available landform genesis concepts. Although the 'dynamic etchplanation' concept is well able to explain the development of lithologically controlled relief, its explanation of planated areas does not fit reconstructed characteristics of the East African landscape history. Late Cenozoic lain formation in East Africa was an episodic event caused by contemporaneous erosion and deposition near base level. It is therefore proposed to elaborate the etchplanation concept with fluvial dynamics. Late Cenozoic planation events in East Africa were triggered by a major base level rise due to the combined effects of eustatic sea level rise and crustal movements associated with rift valley dynamics. The relative base level rise caused a sequence of active fluvial lateral aggradation and erosion within the landscape followed by lagoonal and sometimes even marine conditions shaping extensive plains. The interacting fluvial and etchplanation dynamics make a more comprehensive theory to explain the Late Cenozoic landscape development in East Africa.

AB - The Late Cenozoic landform development history of East Africa is explained insufficiently by the available landform genesis concepts. Although the 'dynamic etchplanation' concept is well able to explain the development of lithologically controlled relief, its explanation of planated areas does not fit reconstructed characteristics of the East African landscape history. Late Cenozoic lain formation in East Africa was an episodic event caused by contemporaneous erosion and deposition near base level. It is therefore proposed to elaborate the etchplanation concept with fluvial dynamics. Late Cenozoic planation events in East Africa were triggered by a major base level rise due to the combined effects of eustatic sea level rise and crustal movements associated with rift valley dynamics. The relative base level rise caused a sequence of active fluvial lateral aggradation and erosion within the landscape followed by lagoonal and sometimes even marine conditions shaping extensive plains. The interacting fluvial and etchplanation dynamics make a more comprehensive theory to explain the Late Cenozoic landscape development in East Africa.

UR - http://www.scopus.com/inward/record.url?scp=0002110728&partnerID=8YFLogxK

M3 - Article

VL - 106

SP - 25

EP - 40

JO - Zeitschrift für Geomorphologie

JF - Zeitschrift für Geomorphologie

SN - 0372-8854

ER -