During continental extension, thinning of the lithosphere is associated with the generation, migration and emplacement of magma at different lithospheric levels. Therefore, magmatism and tectonics in regions undergoing extension are closely linked and their mutual relationships have been investigated for several decades. Nonetheless, many aspects of these processes are still loosely constrained or widely debated: these include the active or passive role of magma ascent on tectonic processes; the contribution the contribution on magma generation and migration of several parameters, like kinematics and rates of extension, mantle potential temperature and presence of mantle plumes, volatile content in the asthenosphere, characteristics of the lithosphere-asthenosphere boundary; the spatial and temporal variations in magmatic products within a rift; the influence of volcanic unrest or tectonic degassing on local/regional/global climate. Besides the scientific interest, the relations between magmatism and tectonics have potential impacts on other important aspects including seismic and volcanic risks, resources, climatic evolution and (in the East African Rift) hominin evolution.
This special volume aims at providing a better understanding of these processes by collecting a series of papers dealing with both tectonically and volcanically active rifts and ancient extensional areas in different regions of the world. Papers are welcome treating several aspects of rifting and rift-related magmatism, including rift segmentation and segment linkage, temporal evolution of extension, spatial distribution of volcanism, magma geochemistry and tectonics, plume-lithosphere interaction, etc. Contributions are welcome focused on the East African Rift, the classic example of an active continental rift, but also on other regions, including ancient rifts, passive margins and observations from fossil extensional areas preserved in mountain belts.
Call for abstracts: 30 November 2021
Call for full papers: 31 March 2022