Cadzi Fm
Period:
Permian, Triassic
Province:
Moatize-Minjova Basin
Type Locality and Naming
Tete Province (Lower Zambezi Basin)
Synonym: Cadzi Sandstone Formation
Lithology and Thickness
The Cadzi (Sandstone) Formation comprises arkosic sandstones with conglomerate horizons and cross-stratication and, in places, limestones and carbonated sandstone strata (the former Tete Sandstone Fm). Significant exposures of the Cadzi Formation are seen along the southern shores of Cahora Bassa Lake, where they form long, gently south-dipping ridges on top of the subdued Matinde Fm. E most prominent ridge, situated north of Magoe and separated by a NWW-trending fault from sediments of the Mágoè Fm, comprises light yellowish or reddish brown to coarse clastic sandstones with interbeds of pebbly sandstones or quartz pebble conglomerates.
On the northern lakeshore, sediments of the Cadzi (Sandstone) Formation occur randomly. A coarse clastic variety of the unit, composed mostly of pebbly sandstones with thin, conglomeratic interbeds, is exposed in the basal part of an open, east-vergent fold structure on the north shore of the lake, south of Cone Negose Mountain. Coarse, clastic sediments of the fault-bounded Cadzi Formation form an over 50 m high escarpment north of Monte Metafuro, with scattered, rounded quartz pebbles, up to 8–10 cm in diameter, in a quite massive, coarse-grained sandstone matrix.
Lithology Pattern:
Relationships and Distribution
Lower contact
Upper contact
Regional extent
GeoJSON
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Fossils
Rhexoxylon africanum, Rhexoxylon cf. priestheyi and Dadoxylon sp.
Age
Late Permian (250) to Early Triassic (-180)
Age Span:
Beginning stage:
Wuchiapingian
Fraction up in beginning stage:
0.9
Beginning date (Ma):
254.77
Ending stage:
Olenekian
Fraction up in the ending stage:
1.0
Ending date (Ma):
246.70
Depositional setting
Continental
Depositional pattern:
Additional Information
Compiler:
Jamal, Daúde; Sitoe, Sandra; Siquela, Eduardo; Venâncio, Jazilo; Lourenço, Ester (2024), Stratigraphic Lexicon: The Sedimentary Formations of the Republic of Mozambique, Africa.