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Knetsch, G. 1938. 15. Aus dem Sedimentstammbaum eines Trockengebietes (Beobachtung aus der südlichen Namib, Südwestafrika). Geologische Rundschau, 29(3-5): 334-347


Description:

From the sedimentation history of a dry area (Oberservations from the southern Namib/South West Africa).

Summary / Notes:

Seit dem Ende der Kreide bilden sich als Folgenerscheinung vertikaler Krustenbewegungen im südlichen Afrika Erosionsgürtel aus, die teilweise entlang ortsfremden Entwässerungssystemen liegen, zum anderen sich entlang der Hauptverbiegungszonen am Kontinentrand erstrecken. Aus einem Teilgebiet der Westküste Südafrikas wurden etwa 4500 cbkm Material entfernt, vom gleichzeitig gebildeten Sediment lassen sich unmittelbar etwa 15,5 cbkm, mittelbar etwa 600 cbkm nachweisen. Besondere Erscheinungsformen dieses Sediments sind durch örtliche Faktoren bedingt. Sie werden ausschnittsweise vom Gesichtspunkt der Betrachtungsweise bei der Untersuchung fossiler Sedimente beleuchtet. So besonders die Färbung des neugebildeten Gesteins in ihrer Abhängigkeit von minimalen Klimaunterschieden, das Vorkommen von Schwermineralien, Krustenbildungen und Verwitterungsformen. Zum Schluß ist eine Tabelle des Ausräumungs- und Sedimentationsvorganges im Trockengebiet im Vergleich mit entsprechenden Vorgängen im humiden Gebiet gegeben.

Year: 1938

Type: Journal Article

URL: http://link.springer.com/article/10.1007/BF01806893#


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Knetsch, G. 1938. 15. Aus dem Sedimentstammbaum eines Trockengebietes (Beobachtung aus der südlichen Namib, Südwestafrika). Geologische Rundschau, 29(3-5): 334-347
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