From November 8 to 13th, Rodrigo Riquelme (UCN) and Sébastien Carretier (IRD-GET) gave a lecture to INGEMMET ingeneers about geomorphological control of formation and preservation of salty soils and supergene mineralization. They took advantage of this opportunity to meet the new President of INGEMMET and his collaborators. S. Carretier also… Continue Reading
COPEDIM is an International Joint research Laboratory about « Copper and Pediment »
COPEDIM is an international research group focusing on the development of geological erosion surfaces (pediments) in the Andes and on associated supergene concentration of some metals like copper by weathering processes. Its objectives are improving knowledge of fundamental processes and training students and professionals about the geomorphological control of supergene copper enrichment.
How and when did erosion and weathering surfaces develop in mountain ranges is a crucial issue to reconstruct climatic and tectonic changes through geological times. Understanding the paleo-environmental conditions required to concentrate copper is fundamental to improve prospection models, in particular below gravel. Our goal is to understand and quantify the optimum paleo- uplift, erosion and climate conditions leading to supergene copper enrichment.
We carry out researches based on field works, mostly in northern Chile and southern Perú, innovative datings of copper bearing minerals, thermochronology to reconstruct the exhumation history of ore deposits, new applications of cosmogenic nuclides to date exotic deposits and to characterize their paleoenvironment, magnetic and geochemical signatures of exotic copper bearing sediment, and we develop numerical and experimental models to study landscape evolution and weathering.
This center has been initiated by the Institut de Recherche pour le Développement (IRD) and the Universidad Católica del Norte (UCN). It has the structure of a « virtual laboratory », with directors, executive committee, researchers and technicians belonging to different Chilean, Peruvian, and French institutions and dedicating part of their time to COPEDIM. It is supported by these institutions and industry. Its center of gravity is located at UCN, Antofagasta.
Stephanie Brichau will give an invited talk at the next geological congress of Chile (18-23th Novembre 2018) in Concepción: Keynote Talk, 21/11/2018, RENE-2, 8:30-8:45 pm : Dating technics applied to supergene copper deposit (Stéphanie Brichau, Caroline Sanchez, Zia Steven Kahou, Sébastien Carretier, Rodrigo Riquelme, Eduardo Campos, Thomas Bissig, Marc Poujol, Stéphanie… Continue Reading
Eduardo Campos and Rodrigo Riquelme participated to the Gordon Research Conference (US, August 5 – 10, 2018). Rodrigo Riquelme gave a keynote talk « Geomorphological Constraints on the Origin and Preservation of Supergene Deposits in the Atacama Desert » in the discussion session « Ore Deposit Preservation, Enhancement and Destruction » managed by Eduardo Campos. https://www.grc.org/geochemistry-of-mineral-deposits-conference/2018/
Rodrigo Riquelme has been awarded a competitive grant from the University Paul Sabatier in Toulouse to work at GET with different researchers and students of COPEDIM. He stayed at GET two month from mid May to mid July.
Sébastien Carretier gave an invited talk at the Steepest Descent meeting entitled « Millennial dispersion rate of river pebbles from 10Be and models » (Vienna, 8 April), and then another one entitled « Stochastic transport of pebbles in a Chilean canyon over millennia revealed by 10Be and a simple transport model » in a… Continue Reading
In March 2018, three researchers from GET lab in Toulouse, Stéphanie Brichau, Stéphanie Duchene, Guillaume Estrade, one PhD student from GET, Steven Kia Kahou, and a researcher from Geosciences Rennes, Marc Pujol, met their colleagues Rodrigo Riquelme and Eduardo Campo from UCN, Antofagasta, for a field trip in different mining… Continue Reading
During December 2017, Vincent Regard (Univ. Paul Sabatier, GET, Toulouse), Sébastien Carretier (IRD-GET) and the phD student Valeria Zavala (GET, Univ. Toulouse, Conicyt) went a week on the field in northern Chile to sample for cosmogenic nuclides with Rodrigo Riquelme (UCN), and two UCN students.
Alberto Fernández Mort, phD student of the UCN, in co-supervision with the University of Complutense, Madrid, was awarded the first price of research for his paper entitled « Fernández-Mort, R. Riquelme, A. M. Alonso-Zarza, E. Campos, T. Bissig, C. Mpodozis, S. Carretier, C. Herrera, M. Tapia, H. Pizarro, and S. Muñoz (2018)…. Continue Reading