IRN FALCoLFrench-Australian Research Network on the study of the Continental Lithosphere
Prof. Olivier VANDERHAEGHE
News & Activities
Workshop GeolAfrica 2021 du 7 décembre 2021 Présentations : VANDERHAEGHE O, Neoproterozoic – IINJITEU C, Bangui anomaly – IMBASSA B, Cameroon volcanic line – GREGOIRE M, Metasomatic mantle – GANNE J, Mantle termal evolution – DJEROSSEM F, Geology South Ouaddai – DAWAI D, Nord Cameroun geology – BOUYO M, Central Africa Fold Belt – BENOIT M, Dunitic Tranisition Zone
Reasonable and durable exploitation or mineral and energetic resources is one of the main challenge for the future of humanity and of the Earth. Addressing these scientific and society issues requires a global knowledge and understanding of element transfers through geological processes such as magmatism and hydrothermalism at depth and weathering, erosion and sedimentation at the surface. Reaching this goal necessitates a multidisciplinary approach integrating scales from the lithosphere to the mineral. We also believe that in order to make progress on issues related to exploitation of natural resources and their impact on the Environment, at the crossroads between fundamental and applied research, implies the development of a network at the interface between Academia and Industry with researchers having diverse and complementary motivations and expertise.
Missions and research themes
The first aim of FALCoL is to formalize and strengthen a more than ten year long collaborative effort joining Australian and French academic and industrial partners on research projects targeting different stages of the evolution of the lithosphere and of the continental crust from the Archean to the Phanerozoic in order to evaluate the impact of geological processes from the deep Earth to the critical zone (geosphere-hydrosphere-biosphere interface). FALCoL has also the ambition to expand ongoing collaborations between participants to a growing team of partners by structuring a network to stimulate discussions and open new routes for future research on the following topics:
See photo below : Peridotite boudin in greenstones
See photos below : Migmatitic TTG San Pedro, Ivory Coast ; Tonalitic gneiss, San Pedro, Ivory Coast
See photo below : Sulfurs in leucosome
- Transfers within the critical zone from primary to secondary ore deposits and impact on the Environment
See photos below : Granitic chaos, Rehoboth Namibie ; Gneiss – Laterite transition San Pedro Ivory Coast
NETWORK ACTIVITIES AND EXPECTED RESULTS
FALCoL is complementary to (i) the LithoSud GDRI (IRD), which corresponds to a North-South network of scientists and dedicated to the formation of the continental lithosphere of the southern hemisphere, (ii) the Labex Ressources 21 held by Université de Lorraine and embracing mineral systems and environmental impacts of mining activities, (iii) the WAXI and SAXI projects funded by a consortium of mining companies with the goal to build a synthesis of geological and geophysical data at the scale of the West African and Guiana cratons, respectively.
The strategy of FALCoL is to offer a space for discussion, valorize existing datasets, support mobility of researchers and students and organize a yearly workshop involving the different partners of FALCoL enlarged to other internationally recognized researchers. During these workshops, the different stages and scales of transfers across the different Earth reservoirs will be treated. Each workshop will be devoted to specific scientific questions and will be fed by reports on different case studies. These discussions will allow to define the state of the art but also to identify debated issues and lead to the elaboration of new projects involving all the facets of mass transfer associated with Earth dynamics.
institutions and laboratories involved
Greenstone – migmatitic TTG transition
Peridotite boudin in greenstones
Migmatitic TTG San Pedro, Ivory Coast
Tonalitic gneiss, San Pedro, Ivory Coast
Sulfurs in leucosome
Granitic chaos, Rehoboth Namibie
Gneiss – Laterite transition San Pedro Ivory Coast
Swimming Pool in the desert Namibia