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Zaida area, Midelt Province, Drâa-Tafilalet Region, Morocco

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Latitude & Longitude (WGS84): 32° 48' 9'' North , 4° 52' 15'' West
Latitude & Longitude (decimal): 32.80260,-4.87090
Other regions containing this locality:Atlas Mountains, North Africa
Köppen climate type:BSk : Cold semi-arid (steppe) climate


Zaida is a town, more precisely a rural commune, near at Al Bab, Tarba’t Sidi I’ich and Sidi I’ich, in Midelt Province, Drâa-Tafilalet, Morocco. Part of Khénifra Province before 2009.
According to the 2004 census it has a population of 9920 in 2062 households and an elevation of 1,503 meters.

Latitude: 32 ° 48 '9.2 "(32.8026 °) north
Longitude: 4 ° 52 '15.1 "(4.8709 °) west

The mining sector of Zaida is located in the upper Moulouya, about thirty kilometers west of Midelt, and exactly on the national road No. 13. We are there in a zone of basin border where arkoses and pelites Permo-Triassic rocks unconformably rest directly on granite and more or less metamorphic shales of the ancient massif of Aouli, which outcrops to the north.
These are continental formations more or less coarse or fine depending on the circumstances and some of which may even be sub-autochthonous because the arkoses resting on the granite contain exactly the same minerals, fresh and apparently little rolled, that this granite under- underlying. Thus, the crystallophyllian basement of Aouili, the triassic series, begins with a conglomerate of shale pebbles and on the granitic substratum by arkoses, arenites and feldspathic rudites. This first detrital detrital term of the trias can locally reach twenty meters of power but is frequently absent. In that case. The "pelites" that make up the next term are based directly on the base. These are poorly stratified argillites, with a remarkably monotonous red brick color (thesis of J.M. SCHMITT in 1976).

The study of Zaida's stratiform lead-bearing deposit shows that galena (PbS) and most of the cerusites (PbCO3) deposited late, at temperatures close to 100 ° C and in an extremely reducing atmosphere. the extent and characteristics of these deposits and the surrounding rocks lead to the conclusion that the ores formed in the mixing zone of deep water tables (hot, mineralized and rich in hydrocarbons) and of shallow groundwater (cold and oxidizing) , that is to say in the emergence zone (or "spillway") of these deep aquifers where the partial oxidation of hydrocarbons provided abundantly nascent hydrogen, the only one capable of reducing Fe3 + in Fe2 + rocks in these natural conditions and on a semi-regional scale.


Mineral List


2 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Jurassic
145 - 201.3 Ma



ID: 1382725
Jurassic sedimentary rocks

Age: Jurassic (145 - 201.3 Ma)

Lithology: Sedimentary rocks

Reference: Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d. [18]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



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