Although Paleogene warm climatic intervals have received considerable attention for
atmospheric and oceanographic changes, the authigenic mineralization associated with …

Oolitic ironstones are iron-rich and chert-poor sedimentary rocks containing concentrically
coated grains composed of iron (oxyhydr) oxides and iron phyllosilicates that offer a unique …

The oxygen isotope composition (δ18O) of marine sedimentary rocks has increased by 10 to
15 per mil since Archean time. Interpretation of this trend is hindered by the dual control of …

An integrated study involving petrographical, mineralogical and geochemical investigations
proposes the origin of the Bakchar ironstone deposit by upward migration of a mixture of Fe …

Biological and ecological changes across the Paleogene hyperthermal events were
accompanied by dramatic shifts in sedimentation systems in both marine and continental …

This work investigates the usefulness of glauconite as an alternate fertilizer by field
experiments on growing durum wheat. Separate field experiments using glauconitolite and …

A detailed study of cement and matrix of ooidal ironstones of the Bakchar deposit (Western
Siberia) was carried out to assess the factors influencing ore-forming processes. This …

This paper explores suitability of glauconitic rocks in the Upper Cretaceous Bakchar deposit
in Western Siberia as alternate potash fertilizer. The K 2 O content of these glauconitic rocks …

We investigated the mechanochemical synthesis of complex slow release fertilizers (SRF)
derived from glauconite. We studied the effectiveness of the mechanical intercalation of urea …

This study investigates the authigenically formed Late Cretaceous and Paleogene marine
ironstones in Western Siberia (Russia) based on petrographic and spectroscopic …