Water plays a critical role in erosion and sediment transport and this relationship is most
evident in the hyperarid Atacama Desert of Northern Chile, a region characterized by …

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 …

Channel ironstone deposits (CID) represent a unique variety of iron-rich sedimentary rocks,
which are mostly found in Northern Kazakhstan and in Western Australia. The origin and the …

Diagenetic alteration of magnetic minerals occurs in all sedimentary environments and
tends to be severe in reducing environments. Magnetic minerals provide useful information …

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 …

The late Quaternary development of the Lower Volga region of Russia is characterized by
an alternating influence of marine and continental environments resulting from fluctuations …

Abstract Interpretation of the paleomagnetic and environmental signals carried by magnetic
iron sulfide minerals depends on the ability to diagnose their magnetic properties and to …

This study investigates the process of formation of ooidal ironstones in the Upper
Cretaceous-Paleogene succession in western Siberia. The formation of such carbonate …

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 …

Greigite forms as an intermediate phase along the pyrite reaction pathway. Despite being
considered metastable, it is observed in numerous shallow natural systems, suggesting it …