Abstract Orogenic degassing is emerging as a potentially relevant source of carbon dioxide (CO 2 ) from the continental crust. However, processes mobilization are still poorly explored. Here, we use thermodynamic modeling to investigate decarbonation sediments metamorphosed under high geothermal gradients. Our shows that immiscible CO -rich vapors and hydrosaline brines generated at these condi...

The basis of this study is a new bathymetric map of the northeast Atlantic compiled from previously published maps made from conventional echosounder data, plus all Sea Beam data acquired on board the R/V JEAN CHARCOT since 1977. As most of the Sea Beam data have been obtained on the continental margin from Porcupine Seabight to the south of the Iberian Peninsula, a precise picture of the conti...

Marine siliceous rocks are widely distributed in the central orogenic belt (COB) of China and have a close connection to the geological evolution and metallogenesis. They display periodic distributions from Mesoproterozoic to Jurassic with positive peaks in the Mesoproterozoic, Cambrian--Ordovician, and Carboniferous--Permian and their deposition is enhanced by the tensional geological settings...

Magmatism between 1.3 and 0.9 Ga at the southwestern margin of Fennoscandia, comprising mainly granitic batholiths subordinate bimodal volcanic rocks, provides a nearly continuous magmatic record Fennoscandian tectonic evolution. Here, we present new published zircon Hf, K-feldspar Pb whole-rock Sr isotopic data from rocks. The ?Hf evolution since 1300 Ma starts out as relatively juvenile, with...

The İstanbul-Zonguldak Tectonic Unit is regarded as the easternmost fragment of Avalonia-Carolina and stands for Far East Avalonia. Its stratigraphy also characterized by discontinuous sedimentation from Late Ediacaran to Carboniferous. In western part block, known İstanbul Terrane, Gözdağ Formation represented lagoonal sedimentary rocks consisting shale-sandstone with limestone Middle Ordovici...

The sources of the Paleocene London Basin marine to fluviodeltaic sandstones are currently unclear. High analysis number detrital zircon U-Pb age investigation an early-mid Thanetian sand from East Kent, reveals a large spread peaks indicative range primary sources. In particular, strong Ediacaran peak is associated with Cadomian Orogeny, while secondary represent Caledonian and various Mesopro...