Death of a Sand Sea: An active erg systematically buried by the Etendeka flood basalts of NW Namibia.

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autor(en): Jerram DA, Mountney N, Howell J, Long D, Stollhofen H
Zeitschrift: Journal of the Geological Society
Verlag: Geological Society
Jahr der Veröffentlichung: 2000
Heftnummer: 157
Seitenbereich: 513-516
ISSN: 0016-7649


Abstract


Here we report on a 'fossilized' sand sea that was progressively engulfed by the basal Etendeka flood basalts in NW Namibia. Preserved relict aeolian landforms include transverse barchanoid dunes and isolated barchan dunes. Present-day preferential erosion of the lava flows exhumes relict aeolian bedforms preserved in the position in which they were migrating at the time of burial (c. 133 Ma). A passive eruption style of inflated pahoehoe flows has preserved the bedforms without significant deformation. The sediment interlayers record a decrease in sand supply and a change in palaeowind direction, which may have been driven by the ongoing break-up of west Gondwana, or may be a direct result of the widespread volcanism itself.



FAU-Autoren / FAU-Herausgeber

Stollhofen, Harald Prof. Dr.
Lehrstuhl für Geologie (Exogene Dynamik)


Autor(en) der externen Einrichtung(en)
The University of Liverpool
University of Oslo


Zitierweisen

APA:
Jerram, D.A., Mountney, N., Howell, J., Long, D., & Stollhofen, H. (2000). Death of a Sand Sea: An active erg systematically buried by the Etendeka flood basalts of NW Namibia. Journal of the Geological Society, 157, 513-516. https://dx.doi.org/10.1144/jgs.157.3.513

MLA:
Jerram, Dougal A., et al. "Death of a Sand Sea: An active erg systematically buried by the Etendeka flood basalts of NW Namibia." Journal of the Geological Society 157 (2000): 513-516.

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