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New data on the structure and composition of stromatolite buildups (Northern Anabar Region)

Litvinova, T. V.

Lithology and Mineral Resources, 2009-07, Vol.44 (4), p.389-398 [Periódico revisado por pares]

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Título:
New data on the structure and composition of stromatolite buildups (Northern Anabar Region)
Autor: Litvinova, T. V.
Assuntos: Earth and Environmental Science ; Earth Sciences ; Geology ; Mineral Resources ; Mineralogy ; Minerals ; Regions ; Rocks ; Sedimentology ; Studies
É parte de: Lithology and Mineral Resources, 2009-07, Vol.44 (4), p.389-398
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Lamination, a characteristic feature of stromatolites, is related to thin alternation of mineral and organogenic layers. The present paper is devoted to structures of Lower Riphean stromatolites in the Fomich River area (northern Anabar Uplift) that were described for the first time and studied with an electron microscope. Two Colonnella forms with different microstructures were examined. It has been established that a banded texture is observed if an organogenic layer is mainly composed of tightclusters of filiform (theread like) particles. However, a clotted texture is recorded if the layer is represented by isolated coccomorphic (rounded) particles. The chemical composition of these tiny structures, which can accumulate several elements, is discussed and analyzed. In the past, the organogenic layer represented a biofilm that comprised a complex-function cyanobacterial community.
Editor: Dordrecht: SP MAIK Nauka/Interperiodica
Idioma: Inglês

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