نتایج جستجو برای: carbonated serpentinite
تعداد نتایج: 1928 فیلتر نتایج به سال:
Subducted serpentinites have the potential to control exchange of volatile and redox sensitive elements (e.g., Fe, S, C, N) between slab, mantle wedge deep mantle. Here we examine mobility iron zinc in serpentinite-derived fluids by using their stable isotopes (δ56Fe δ66Zn) high-pressure subducted meta-serpentinites from Cerro del Almirez massif (Spain). This preserves a metamorphic front antig...
Palladium, platinum, and gold were analyzed for 20 interstitial water samples from Leg 125. No Pd or Pt was detected in fluids from serpentinite muds from Conical Seamount in the Mariana forearc, indicating that low-temperature seawater-peridotite interaction does not mobilize these elements into the serpentinizing fluids to levels above 0.10 parts per billion (ppb) in solution. However, Au may...
A LENSOID mass of serpentinite is continuously exposed over some 650 m along the trace of the NNE.-trending Waipa Fault at Wairere (38~ 33" S., 175 ~ 2' E.) south of Te Kuiti (Fleming, 1948; O'Brien, I97O). Extensive quarrying of the deposit has revealed the presence of numerous highly-altered xenoliths of gabbro ranging in size from hand specimens to about 12o m a and exhibiting strongly groov...
Geochemical reactions associated with serpentinization alter the composition of dissolved organic compounds in circulating fluids and potentially liberate mantle-derived carbon and reducing power to support subsurface microbial communities. Previous studies have identified Betaproteobacteria from the order Burkholderiales and bacteria from the order Clostridiales as key components of the serpen...
Aqueous copper-mediated radical polymerization of acrylamides and acrylates in carbonated water resulted in high monomer conversions (t < 10 min) before undergoing depolymerization (60 min > t > 10 min). The regenerated monomer was characterized and repolymerized following deoxygenation of the resulting solutions to reyield polymers in high conversions that exhibit low dispersities.
The present case describes the management of significant tooth wear in a 13-year-old boy who presented following excessive consumption of carbonated drinks, accompanied by a “frothing” habit. The case demonstrates an alternative approach to the management of tooth wear, using a double-veneer technique, and emphasises the importance of recognition and early intervention in cases of dental erosion.
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