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Clay mineralogy of Triassic sediments in southern Israel and Sinai
Author(s) -
HELLERKALLAI L.,
NATHAN Y.,
ZAK I.
Publication year - 1973
Publication title -
sedimentology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.494
H-Index - 108
eISSN - 1365-3091
pISSN - 0037-0746
DOI - 10.1111/j.1365-3091.1973.tb01628.x
Subject(s) - geology , chlorite , illite , clay minerals , kaolinite , geochemistry , montmorillonite , sedimentary rock , vermiculite , mineral , diagenesis , evaporite , mineralogy , paleontology , quartz , materials science , chemical engineering , engineering , metallurgy
The clay mineral composition of Triassic sediments in the Negev and Sinai depends upon the environment of deposition. Kaolinite predominates in continental and epicontinental sediments. The mineralogical composition of the marine clays resembles that of corresponding samples from North Africa and Europe, which comprise various mixtures and interstratifications of illite, montmorillonite, vermiculite and chlorite. Evaporitic sediments are poor in clay minerals and those present are largely detrital. The results presented suggest that chlorite was formed diagenetically by prolonged percolation of seawater through pervious layers overlying impervious ones (hard beds).