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GEOREF RECORD

Les charnockites et les roches associees du Suggarien a facies In Ouzzal (Sahara algerien)

Pierre Giraud
Les charnockites et les roches associees du Suggarien a facies In Ouzzal (Sahara algerien)
Bulletin de la Societe Geologique de France (1961) 3 (2): 165-170

Abstract

Rocks of the In Ouzzal facies in Suggarian (Precambrian) complexes of the Sahara of Algeria comprise a charnockitic complex consisting essentially of pyroxenites, gneisses, plagioclasites, "granites," and "syenites" (lamboanites), with interstratified masses of crystalline limestone with silicate nodules, garnet and graphite gneisses, and "leptynites" with blue quartz. The structural arrangement of the In Ouzzal formations is totally different from that of ordinary Suggarian formations. Their eastern boundary is a large fault, whereas their western boundary is not a clear-cut fracture. Southward there appears to be a gradation into ordinary Suggarian rocks.


ISSN: 0037-9409
Coden: BSGFAE
Serial Title: Bulletin de la Societe Geologique de France
Serial Volume: 3
Serial Issue: 2
Title: Les charnockites et les roches associees du Suggarien a facies In Ouzzal (Sahara algerien)
Author(s): Giraud, Pierre
Pages: 165-170
Published: 1961
Other Date: 1962
Text Language: French
Publisher: Societe Geologique de France, Paris, France
Accession Number: 1962-001909
Categories: Igneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: sk. map
N19°00'00" - N37°00'00", W09°00'00" - E12°00'00"
Source Note: Series 7
Country of Publication: France
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from Bibliography and Index of Geology Exclusive of North America, Geological Society of America, Boulder, CO, United States
Update Code: 1962
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