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International Journal on Algae
SJR: 0.216 SNIP: 0.322 CiteScore™: 0.4

ISSN Imprimir: 1521-9429
ISSN On-line: 1940-4328

International Journal on Algae

DOI: 10.1615/InterJAlgae.v1.i3.110
pages 108-114

A living laboratory model - an analogue of passive-branching columnar stromatolites

V. K. Orleansky
Interinstitute Laboratory of the Paleontology Institute of RAS, 123, Profsoyuznaya St., 117997; S.N. Vinogradskiy Institute of Microbiology, Russian Academy of Sciences, 7, 60 Let Oktiabria Square, Mosсow
E. A. Raaben
Institute of Geology of the Russian Academy of Sciences, 7, Pyzhevsky Per., 109017 Moscow, Russia

RESUMO

A model, an analog of a passive-branching stomatolite, was obtained for the first time under laboratory conditions. The branching of a laboratory stomatolite occurs due to uneven distribution of a mineral sediment over the algobacterial mat surface. In sites of high concentration of the sediment the growth of stromatolite-forming blue-green algae (Cyanobacteria) was retarded and ceased. In sites where sedimentation was less active, the growth of mat continued, and new layers were formed. In the course of time the latter gradually built up and then were buried, one above the other, forming bundles or piles of layers in the shape of columns. This is seen well on vertical sections.


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