Large-scale magnetic susceptibility (MS) variations in ancient sediments are usually interpreted as related to sea-level and climate changes affecting the erosional regime amount of detrital input. To constrain such environmental during Famennian, we compared MS records representative sections pelagic limestones (1) Avalonian margin Laurussia [Sessacker (SES) Beringhauser Tunnel (BHT), Rhenish ...

Abstract ––A large regional-scale Ordovician continental basin has been revealed for the first time in Siberia. Sedimentary structures rocks of Tyva represent deposition environments rivers, oxbow lakes, dunes, river deltas, tidal, and coastal plains. Ichnofossils record a succession from freshwater (limnic-fluvial) to deltaic tidal facies. Integrated studies sedimentary Central show that they ...

The Cenomanian-Turonian period recorded one of the largest disruptions to oxygen and carbon cycles, Oceanic Anoxic Event 2 (OAE2, 94 Ma). This event is global, yet paleo-reconstructions document heterogeneous ocean oxygenation states sedimentary contents, temporally spatially, suggesting that several mechanisms are at play. To better understand long-term controls on oceanic initial conditions p...

The rise of the Andes and associated propagation retroarc foreland basin during Mesozoic Cenozoic in western South America shaped paleogeography paleoenvironmental settings Western Amazonia. Much attention has been paid to Neogene evolution Amazonian Basin, but few studies have investigated detail paleoenvironments Amazonia Paleogene. We present a multi-proxy study that includes new biostratigr...

OVERVIEW On Earth, natural glasses are typically produced by rapid cooling of melts, and as in the case minerals rocks, can provide key information on evolution Earth. However, products not solely terrestrial, different formation mechanisms give rise to a variety amorphous materials. In this chapter, we an overview non-magmatic origin their mechanisms. We focus formed other than magmatic activi...

Tarim Basin is a large, superimposed basin rich in petroleum resources, which has experienced many stages of complex tectonic-sedimentary evolution. As the basic geological study Basin, proto-type and tectono-paleogeographic evolution are great significance for understanding distribution reservoirs provide tectonic background theoretical guidance exploration. According to residual thickness map...