High-resolution record revealsclimate-driven environmental andsedimentary changes in an active rift

Young rifts are shaped by combined tectonic and surface processes and climate, yet few records exist to evaluate the interplay of these processes over an extended period of early rift-basin development. Here, we present the longest and highest resolution record of sediment flux and paleoenvironmental changes when a young rift connects to the global oceans. New results from International Ocean Discovery Program (IODP) Expedition 381 in the Corinth Rift show 10s–100s of kyr cyclic variations in basin paleoenvironment as eustatic sea level fluctuated with respect to sills bounding this semi-isolated basin, and reveal substantial corresponding changes in the volume and character of sediment delivered into the rift. During interglacials, when the basin was marine, sedimentation rates were lower (excepting the Holocene), and bioturbation and organic carbon concentration higher. During glacials, the basin was isolated from the ocean, and sedimentation rates were higher (~2–7 times those in interglacials). We infer that reduced vegetation cover during glacials drove higher sediment flux from the rift flanks. These orbital-timescale changes in rate and type of basin infill will likely influence early rift sedimentary and faulting processes, potentially including syn-rift stratigraphy, sediment burial rates, and organic carbon flux and preservation on deep continental margins worldwide.publishedVersio

Early syn-rift sedimentation and paleoenvironments in the easternmost end of the Corinth rift (Greece): IODP 381 Hole M0080A.

International audienc

Structural style of the Languedoc Pyrenean thrust belt in relation with Tethysian and Durancian inherited structures, southern France

International audienc

Le bassin sarro-lorrain, témoin de la transition syn- à post- orogénique varisque

National audience- État des connaissances sur le bassin de Lorraine- Nouvelles données issues du retraitement de profils sismiques industriels- Un nouveau modèle structural pour le bassin de Lorrain

Quantifying sedimentation rates during early rifting. Tectonic versus climate controls on alluvial sedimentation in the Plio-Pleistocene Corinth rift (Greece)

International audienc