Berthierine and chamosite are iron-rich clay minerals that share similar chemical
compositions. Berthierine forms at low temperature (25–45° C) during early diagenesis and …

The exceptionally glauconite-rich Miocene strata, superbly exposed throughout the front of
the nappes zone of northern Tunisia, show marked contrast in Fe-silicate authigenesis …

Early Jurassic climate is characterized by alternating cold and warm periods highlighted by
studies based notably on oxygen isotopes measured on belemnite guards and other marine …

Snowball Earth glaciations are the most extreme climate perturbations recorded in Earth's
history. It has been argued that the termination of these events was characterized by a single …

Exceptional fossil preservation is defined by the preservation of soft to lightly sclerotized
organic tissues. The two most abundant types of soft-tissue preservation are carbonaceous …

Sedimentary records suggest that the mid-Proterozoic (ca. 1.8–0.8 Ga) was persistently
characterized by a greenhouse climate despite significantly lower solar luminosity compared …

Major phosphogenic events took place in the late Paleoproterozoic and the Ediacaran, both
of which followed an episode of atmospheric oxygenation. These apparent coincidences …

This study presents detailed sedimentological, geochemical, and mineralogical evidence of
green clay formation at the basal part of the early Maastrichtian Kallankurichchi Formation …

The aim of the present study is to reconstruct sedimentary conditions of Middle Jurassic
rocks that contain siderites to identify the mineral composition of the inserbeds and to …

The present study assesses the physico-chemical character of the fluids responsible for the
genesis of carbonate minerals in the Middle Jurassic sideritic rocks at the northeastern …