Open AccessPore space of carbonate tidalites — paleoclimatic aspect
Author(s) -
V. G. Kuznetsov,
Л. М. Журавлева
Publication year - 2019
Publication title -
litologiâ i poleznye iskopaemye
Language(s) - English
Resource type - Journals
ISSN - 0024-497X
DOI - 10.31857/s0024-497x20194351-363
Subject(s) - geology , evaporite , carbonate , dolomite , transgressive , characterisation of pore space in soil , mineralogy , geochemistry , paleontology , sedimentary depositional environment , chemistry , porosity , sedimentary rock , geotechnical engineering , organic chemistry , structural basin
Carbonate deposits of tidal zones are characterized by micritic structures, considerable content of clay material, wide development of cyanobacterial formations. Under arid climate conditions, dolomite tidalites are formed in association with evaporites, which contain numerous interlayers of stromatolites. Dolomitic tidalites make up the lower and upper elements of three-membered transgressive-regressive cyclites, and talidites deposited in a humid climate lie at the base of two-membered cyclites composed of limestone. The pore space is very specific in both cases, due to the wide development of bacterial formations, and this determines the sharp permeability anisotropy.