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Upper Campanian suspected silicified seismite related to the Syrian Arc tectonic system in the Middle East by Zeev Lewy is a Earth and Planetary Sciences article available to read on EtoBox.

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The formation of the rare 'homogenous linear structures' in chert beds in the Phosphate Member of the Mishash Formation in central and southern Israel is reevaluated based on new samples from Har Omer, Arava Valley. These are of 4-6 cm thick chert beds in which the upper and lower surfaces form dense subparallel low ridges in contrast to the planar surfaces of other chert layers alternating with other lithologies. The ridges were suggested to have formed by advancing silicification fronts replacing the original sediment by microquartz without specifying the control on the ridged pattern and its regional orientation. One sample exhibits different color internal folds attesting to a multiple wavy mobilization of the silica-bearing liquid, probably composed of individual tiny crystallites of silicified calcareous micrite dispersed in seawater. This interpreted 'soup' of microquartz crystallites is corroborated by examples of a plastic deformation and mobilization in a muddy state of the siliceous Mishash Formation unconsolidated sediment. E-W dominant orientation of the ridges in central and southern Israel cannot be related to a simple diffusive diagenetic process and probably was in

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Author

Zeev Lewy

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 1464-343X)

Published

2010

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)