Sessions > Symposium C: Geodynamics

Session C1: Oceans and continents in time and space - everything around paleogeography and tectonic reconstructions during the Paleozoic

This session welcomes all contributions dealing with palinspastic, paleogeographic and paleoenvironmental reconstructions of the earth surface configuration during the Paleozoic, from the regional to the global scale. Topics include, but are not restricted to, (i) the evolving nature of oceanic domains, continental margins, continental masses and their topography, and the distribution of igneous and sedimentary rocks, (ii) their relations to core/mantle dynamics and/or climate evolution, (iii) the role of paleogeographic/structural inheritance in Late Paleozoic orogenies, or (iv) the surface evolution of Late Paleozoic orogens and continents.

Session C2: Rifting, convergence, mountain building and late- to post-orogenic evolution: views from the magmatic systems

Magmatism is a key indicator of plate interactions, providing essential insights into the nature and timing of geodynamic processes, the thermal state of the lithosphere, and the formation and differentiation of the oceanic and continental crusts. This session invites contributions focusing on magmatism associated with the development of peri-Gondwanan margins, pre-collision convergence leading to the assembly of Pangea, and syn- to post-orogenic processes operating through Late Paleozoic belts formed after the closure of the Rheic, Paleo-Tethys? and other ocean basins. Submissions exploring the relationships among magmatism, tectonics, and sedimentary basins evolution are also highly encouraged.

Session C3: Structure and evolution of ocean basins, continental margins and orogens: constraints from tectonic and geophysical studies

The session welcomes contributions investigating the crustal/lithospheric architecture and tectonic evolution of continental domains at all scales, with bearing on Late Paleozoic orogens, and their precursor continental margins and ocean basins. Geological approaches may include, but are not restricted to, structural geology, geochronology, metamorphic/igneous petrology, basin/sediment provenance analysis or paleo-altimetry.

Session C4: Unraveling metamorphism in Late Paleozoic orogens: new tools, new timelines, new tangles

Understanding the evolution of orogens requires using a broad toolbox able to operate from atomic to lithospheric scales. Petrochronology has established as a decisive tool that bridges the gaps between natural observations and analytical results among mineral phases and tectonic interpretations. Recent advances in analytical techniques, thermodynamic modelling and experimental petrology are designing new avenues to test and refine timing, duration and pressure - temperature - composition conditions of geological processes in Late Paleozoic orogenic systems. This session proposes to: (1) present new findings in the P-T-t evolution of metamorphic terranes, (2) explore case studies in which cutting-edge techniques lead to great leaps and (3) venture overviews of new metamorphic research that help (re)shaping our ideas of orogeny. We welcome contributions using metamorphic geology to unravel the Late Paleozoic orogens timeline and dynamics. Moreover, as with great resolution comes great complications, this session also aims to provide an opportunity to shed light on the tangles encountered and to promote refreshing and forward-driven discussions.

Session C5: From rift to collision: paleogeography and geodynamic evolution of the Iberian Variscides

Special session promoted by the Geological Society of Portugal (SGP) interest groups GGET and GRESBASE

The focus of this session is the evolution of the Iberian Massif of the Variscan belt, from the Early Paleozoic rifting of the Rheic Ocean to the continental collision in the Carboniferous. What implications did the rifting process have on the architecture of the Iberian crust, and on paleogeography, sedimentation and magmatism of northern Gondwana? What is the relationship between the Upper Devonian-lower Carboniferous basins and the lithosphere evolution, and the role of Mississippian high temperature-low pressure metamorphism and related structures? What modifications were imposed on Devonian and Carboniferous sedimentation and ecosystems during the accretionary and collisional orogenic stages? We welcome contributions combining a wide-range of disciplines and approaches at multiple scales, from field-based observations to the microscale, and employing various analytical techniques. We are keen to have ECR works featuring in this session.

Session C6: Late Paleozoic sedimentary basins: from paleoenvironments to geodynamics

This session aims at gathering scientists working on syn to post orogenic sedimentary basins associated with the Late Paleozoic orogens (Devonian, Carboniferous and Permian). We are expecting contributions in the fields of structural geology, tectonics-sedimentation relationships, basin dynamics and paleoenvironmental reconstructions, as well as their links with internal and external forcing factors. This session also deals with sedimentology, geochemistry, geochronology, tectonics, sediment sources tracing, paleoenvironmental and climate proxies. It aims to better understand the links between first-order factors and their retroactions governing surface processes and the preservation of sedimentary systems, as well as those controlling syn- to post-collision processes and long-term climate change.