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GEOREF RECORD

Microstromatolitic deposits on granitic monuments; development and decay

Francesca Blazquez, Maite Garcia Valles, Wolfgang E. Krumbein, Katja Sterflinger and Mario Vendrell Saz
Microstromatolitic deposits on granitic monuments; development and decay
European Journal of Mineralogy (August 1997) 9 (4): 889-901

Abstract

Biocolonization and colour change, patina and microstromatolite formation on two Mediterranean granites (a wall on Delos and a cathedral in the Catalan Pyrenees) were studied using SEM and XRD techniques. Black yeasts and meristematically growing black fungi develop on and within the granite and are the same genera and species associated with both marble and limestone monuments. On sheltered but episodically wet surfaces, a surface biofilm or microbial mat gives rise to mineral deposition which traps airborne dust giving a mono-or multilayered patina that can be regarded as a micro-stromatolite or monument stromatolite. The main minerals in this patina are calcite, Ca-oxalate, gypsum and Ca-phosphate, none of which is influenced by the substrate and which must be taken as the product of the stromatolite forming micro-flora.


ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 9
Serial Issue: 4
Title: Microstromatolitic deposits on granitic monuments; development and decay
Affiliation: University of Barcelona, Department of Crystallography and Mineralogy, Barcelona, Spain
Pages: 889-901
Published: 199708
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 24
Accession Number: 1997-070813
Categories: Environmental geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N30°00'00" - N47°30'00", W05°00'00" - E38°00'00"
Secondary Affiliation: Carl von Ossietzky Universitaet, DEU, Federal Republic of Germany
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 199723
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