In this study, we conducted a comprehensive investigation of rock magnetic, mineralogical, and sedimentological records sediment cores supplemented by high resolution seismic data to elucidate the controls structural diagenetic ( early vs. late ) processes on magnetism in active relict cold seep sites Bay Bengal. Two distinct magnetic zones (Z-I Z-II) are defined based down-core variations prop...

The oxygen content of the atmosphere is thought to have increased in two steps: the Paleoproterozoic Great Oxidation Event and the Neoproterozoic Oxidation Event. The younger event is still a matter of debate (Och and Shields-Zhou, 2012). Macouin et al. (2015) suggest that it may have been triggered by volcanic degassing from unusually oxidized magmas occurring in a subduction ring surrounding ...

Abstract We report paleomagnetic records of Matuyama–Brunhes geomagnetic polarity reversal and associated key tephra layers from the Early–Middle Pleistocene marine sedimentary succession in Boso Peninsula. The outcrop is Terasaki, Chiba, Japan ~ 25 km northeast Chiba section. sediment consists a massive siltstone layer Kokumoto Formation, Kazusa Group. A was identified middle with chemical com...

Paleomagnetic studies in the Lachlan Orogen have indicated rotation of elements within it, but evidence for is limited and has significant statistical uncertainty. This study presents a detailed paleomagnetic investigation, assisted by X-ray analysis magnetic mineralogy middle Cambrian to lower Silurian sedimentary igneous rocks Victoria New South Wales. Four demagnetisation behaviours (types A...

Oxides are ubiquitous. The Earth’s crust and mantle are largely made up of compounds of metal cations and oxygen anions. Looking at the composition of the crust in Figure 1.1, we see that oxygen is the most abundant element and the most common metals are aluminum and silicon. Most rocks are therefore aluminosilicates. The next most abundant element, and the only transition metal other than tita...