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Controls of extreme isotopic enrichment in modern microbialites and associated abiogenic carbonates
(Pergamon-Elsevier Science Ltd, 2020-01)
Microbialites and abiogenic carbonates of the closed-basin hypersaline lake Laguna Negra (Catamarca Province, Argentina) are highly enriched in both 13C and 18O. These carbonates precipitate in the zone of recharge where ...
Microbialites at Gusev Crater, Mars
(Science Editors, 2015-11)
The Mars Exploration Rover Spirit investigated plains at Gusev crater, where sedimentary rocks are present. The Spirit rover’s Athena morphological investigation shows microstructures organized in intertwined filaments of ...
Habitat conditions drive phylogenetic structure of dominant bacterial phyla of microbialite communities from several locations in Mexico
(Universidad de Costa Rica, 2016)
Short-term microbialite resurgence as indicador of ecological resilience against crises (Catamarca, Argentine Puna)
(John Wiley & Sons Inc., 2021-10)
Microbialite-producing microorganisms that inhabit the Puna lakes are traditionally considered constituents of fragile microsystems, unable to resist important environmental variations. Nevertheless, this region has ...
Biotic vs. abiotic signatures in Late Pleistocene lacustrine microbialites of the Maquinchao Basin (Argentina)
(International Association of Sedimentology, 2019)
Identifying and further weighting the role of biotic versus abiotic processes in microbialite formation remain a big challenge. The Maquinchao basin is a closed continental basin in northwestern Patagonia, east of the Andes ...
Characterization of bacterial diversity associated with microbial mats, gypsum evaporites and carbonate microbialites in thalassic wetlands: Tebenquiche and La Brava, Salar de Atacama, Chile
(Springer Tokyo, 2014-03)
In this paper, we report the presence of sedimentary microbial ecosystems in wetlands of the Salar de Atacama. These laminated systems, which bind, trap and precipitate mineral include: microbial mats at Laguna Tebenquiche ...
Tracking organomineralization processes from living microbial mats to fossil microbialites
(Multidisciplinary Digital Publishing Institute, 2020-07-04)
Geneses of microbialites and, more precisely, lithification of microbial mats have been studiedin dierent settings to improve the recognition of biogenicity in the fossil record. Living microbial matsand fossil microbialites ...
Structures/textures of living/fossil microbialites and their implications in biogenicity: An astrobiological point of view
(Trade Science, 2015-10)
Atacama’s microbialites, able to live in such extreme environment, are possible candidates as models for searching life in other planets or moons. At present, little is known about their microstructure and composition. ...
Modern active microbialite-metazoan relationships in peritidal systems on the eastern cape coast of South Africa: ecological significance and implication for the palaeontological record
(Pergamon-Elsevier Science Ltd, 2019-05)
Modern microbialites are useful partial analogues of their ancient counterparts and especially can provide clues on the conditions to which they were once exposed to. One of the conundrums which has been slow to solve is ...