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CONTRIBUTION DES S.I.G. À L ÉTUDE DES MINÉRALISATIONS DE LA PARTIE CENTRO-ORIENTALE DU NORD ALGÉRIEN

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B. NAïTAMARA-BENHAMMOUCHE ETDj.-E. AïSSA

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The aim of our study is to better understand the mineralization genesis and their relation- ship with geological and structural factors and highlight the metallotects. For this, we have ac- complished a datation basis taking into account the following factors:

- ore deposits coordinates;

- the geological and structural context;

- the specific nomenclature of host rocks;

- magnetic field anomalies;

- relationship between the ore deposit and the tectonic phases;

- regional magmatic events;

- geothermal flow context;

- thermal and hot springs data,;

- hydrothermal alterations of the host rocks;

- aspect of the mineralization and of the ore deposit morphology;

- the mineral paragenesis and the mineralogical composition.

The data processing requires making use of Geographical Information system (GIS). As results, this work highlights the spatio-temporal relationship between the mineralizations and the various factors controlling them.

Keywords - Northern Algeria - Ore deposits and mineral occurences- GIS - Databasis.

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