The preparation of methyl-isopropyl-anthraquinone

Abstract

Throughout the Cenozoic, the southern Andes have had a distinctive feature when compared to the central Andes. The presence of a continuous batholith belt that starts at nearly 39o S and ends in Cape Horn Islands in the southernmost tip of the Andes at about 52o S is evident. This chapter focuses on the importance of the different geological and tectonic processes that have uplifted the Andes at these latitudes and the ways in which the climate has had an important role not only in carving the landscape but also in controlling the uplift mechanisms through time. The Patagonian Cordillera records a complex Pre-Cenozoic history that controls the Andean structures. During the Cenozoic, the interaction of spreading ridges and subduction at the trench controlls the main deformation episodes, the volcanic arc gaps and the eruption of foreland plateau basalts. As a result, most of the Patagonian Cordillera south of the Aysén triple junction had an abnormal heat flux through time, which substantially decreases the viscosity of the underlying mantle. This fact enhanced the structural response to different climatic changes that affected the area since the Late Miocene.