Trace elements and their isotopes (TEIs) play a crucial role in the ocean and can be used as tracers for past and modern oceanic processes. Studying their biogeochemical cycles has direct implications in diverse research areas such as carbon cycling, climate, ocean ecosystems and environmental contamination. In this context, GEOVIDE proposes to undertake an integrated oceanographic transect in the North Atlantic and Labrador Sea. This area is crucial for the Earth climate and the thermohaline circulation as it represents a major overturning area of the so-called Meridional Overturning Circulation (MOC). Moreover, TEI distribution is poorly constrained in this area. GEOVIDE is an international collaborative programme which aims at better constraining the uncertainties on water and heat fluxes across the cruise section, notably by adding information on the deep water mass export and circulation, but also in providing new information on chemical element fluxes. GEOVIDE will allow the quantification of processes that influence the distribution of key TEIs in this area, in particular advective and scavenging processes, biological uptake, exchanges with the margins, and atmospheric deposition. The main scientific objectives of GEOVIDE are to: 1- Better know and quantify the MOC and the carbon cycle in a decadal variability context, adding new key tracers 2- Map the TEI distribution with their physical and chemical speciation along a full-depth high resolution ocean section 3- Characterize the TEI sources and sinks and quantify their fluxes at the ocean boundaries 4- Investigate the link between the TEIs, and the production, export and remineralisation of particulate organic matter 5- Better understand and quantify the paleoproxies 231Pa/230Th, Nd isotopes, and Si isotopes. The project is based on a 44-day oceanographic cruise on the R/V “Pourquoi Pas?” (summer 2014). We will use a series of novel techniques and state-of-the-art instrumentation. The strength of the project resides in its interdisciplinarity: physical oceanography, geochemistry and biogeochemistry will be coupled, merging observation and modelling. GEOVIDE gathers highly qualified scientific teams from five different countries. This project will be the French contribution in the North Atlantic to the Global GEOTRACES TEI survey (official GA01 GEOTRACES section) and will provide essential information, notably for the modelling of the present and past ocean, on TEI distributions in this key area of the thermohaline circulation. GEOVIDE will also actively contribute to other international programmes, such as SOLAS, IMBER, CARBOCHANGE and CLIVAR. GEOVIDE is part of the axis 2 of the LabexMER “A changing Ocean” and is linked to the Equipex NAOS “Novel Argo Ocean observing System”, in particular to the WP5 “Deep oxygen floats in the North Atlantic”. GEOVIDE is also a strong international and original action of the UPEE Pole in the framework of the IDEX UNITI in Toulouse. Finally, GEOVIDE has an educational component at various academic levels and the results of the project will be incorporated into materials for web dissemination and public outreach, as well as through scientific publications and presentations at international conferences. Five young scientists (three research associates and two PhD students) will be trained during this project. The results obtained during this project will be available through various databases (SISMER, LEFE-CYBER, and the GEOTRACES International Data Assembly Centre).