Turn lead to an overestimation of both orogenic thickening and horizontalĬobalt-, iron- and nitrogen-doped ordered mesoporous carbon (OMC)-based electrocatalysts are prepared, characterized, and used as cathode catalysts in anion-exchange membrane fuel cell (AEMFC). High-temperature records may be misinterpreted as syn-orogenic, which can in Where details of basin evolution are lacking, Interpretation of palaeothermal data when they are used to identify pastĬollisional thermal events. Reconstruction of rift domains and geophysical interpretation of currentĬrustal thickness in the SW Alps. Thermal gradient of 80–90 ∘C km−1 requires a crustal thickness of 8–10 km during the Early Cretaceous, hence placing constraints for tectonic Sediments accreted from the downgoing plate are inherited. Striking new example where mid-crustal palaeotemperatures measured in Thermal relaxation in the Alpine foreland basin. Valaisan–Vocontian rifting, while the lowest Tmax reflect post-rift Modelling shows that the highest palaeotemperatures were achieved during theĮarly Cretaceous (∼ 130 Ma), associated with the Recorded either in the Upper Mesozoic or the syn-orogenic sequence. (2) regionally variable lower temperatures (<150 ∘C) Tmax up to 300–330 ∘C measured in the Jurassic succession and Our results highlight two groups ofĭepth-dependent temperatures: (1) a regionally extensive and constant Stratigraphic sections at the front of the Digne Nappe (SW Alps), from theĭevoluy Massif to the Castellane Arc. The thermal record of Lower Jurassic to Eocene strata exposed along six Using Raman spectroscopy on carbonaceous material (RSCM) to calculate Tmax, we have investigated Of pre-orogenic heating events in mountain belts questions the magnitude of Rocks are accreted from the lower to the upper plate. Temperatures (Tmax) increase towards the internal domains as crustal Our re‐evaluation of the metamorphic history requires revision of the role of magmatism as a source of heat transport in forearc metamorphism and the tectonic assembly in this setting.Ĭonceptual models of orogenic accretionary prisms assume that peak Elevated forearc metamorphism is due to the subcretion at ~ 51 Ma of nascent oceanic crust (and related spreading ridge or hotspot) of the underlying Siletz‐Crescent terrane along the south‐bounding Leech River shear zone. The small‐volume, interfoliated intrusions of Eocene age occurring throughout the terrane show no spatial relation to the isotherms. Isotherms are continuous across the Leech River ‐ Pandora Peak boundary. Pseudosection models (Perple_X), and thermometry using garnet‐biotite Fe‐Mg exchange and Raman Spectroscopy of Carbonaceous Material (RBCM) show a thermal gradient at ~3.8 kbar from ~230 oC in the north to ~600 oC in the south. A local thermal overprint in the Pandora Peak Unit is characterized by replacement of prehnite‐pumpellyite and lawsonite‐bearing assemblages with muscovite +chlorite. Biotite, garnet and staurolite isograds occur concentrically in the Leech River Complex, centered on the Leech River shear zone at its southern boundary. Two units, the Leech River Complex and Pandora Peak Unit, within the terrane were subject to high temperature, medium pressure metamorphism. The Pacific Rim Terrane is of forearc affinity and one of the most recent crustal elements accreted to the North American Cordillera in western Canada. The use of this model for fitting the Raman spectra of deposited AC film, ND, CB and MWCNT films demonstrated its validity and effectiveness for investigating the amorphous carbon in various carbon systems and its applicability in comparative studies of other NCMs. It has been established that the use of the 7-peak model for fitting the Raman spectra makes it possible not only to isolate the contribution of the modes of amorphous carbon but also to improve the accuracy of fitting the fundamental G and D2 (D) modes and obtain a satisfactory convergence between XPS and Raman spectroscopy. In this work, a comparative study of the effect of heat treatment on the structure and content of amorphous carbon in deposited AC film, nanodiamonds, carbon black and multiwalled carbon nanotube samples was carried out by TEM, XPS, XRD and Raman spectroscopy. Thus, the determination of AC in NCMs is extremely important for controlling the properties of a wide range of materials. Amorphous carbon (AC) is present in the bulk and on the surface of nanostructured carbon materials (NCMs) and exerts a significant effect on the physical, chemical and mechanical properties of NCMs.
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