[Laboratory analogs of cyanobacterial mats of the alkaline geochemical barrier].
The goal of this work was to illustrate a possible interaction between the "soda continent" and the ocean. A laboratory simulation was undertaken of the development of alkaliphilic mat with calcium carbonate and calcium phosphate interlayers in the zone where ocean waters, containing calcium and manganese, come into contact with carbonate- and phosphate-rich alkaline waters. The macrostructure of the layered cyanobacterial mat turned out to little dependent on the chemical conditions causing sediment formation. The chemical composition of freshly formed mineral interlayers of the mat was found to vary with the medium composition. The mineralogical composition of the sediment is determined by diagenesis conditions in its depth, which can cause mineral phase conversions.
Zavarzin
G A
GA
Institute of Microbiology, Russian Academy of Sciences, pr. 60-letiya Oktyabrya 7, k. 2, Moscow, 117312 Russia.
Orleanskiĭ
V K
VK
Gerasimenko
L M
LM
Pushko
S N
SN
Ushatinskaia
G T
GT
D018533:Biomass; D002119:Calcium Carbonate; D002130:Calcium Phosphates; D000458:Cyanobacteria / Q000737:chemistry / Q000254:growth & development / Q000378:metabolism*; D019015:Geologic Sediments / Q000737:chemistry / Q000382:microbiology*; D009792:Oceans and Seas
D002130:Calcium Phosphates; C485828:alpha-tricalcium phosphate; C485830:tetracalcium phosphate; C485838:calcium phosphate, monobasic, anhydrous; C020243:calcium phosphate; D002119:Calcium Carbonate; C485829:calcium phosphate, dibasic, anhydrous
Laboratornye modeli tsiano-bakterial'nykh matov shchelochnogo geokhimicheskogo bar'era.