The Mashhad ultramafic complex with a Permo-Triassic stratigraphic age is exposed at the NE of Binaloud Mountain and the SW to NW of Mashhad city. This area is mainly composed of mafic and ultramafic rocks, metamorphosed carbonate and pelitic rocks and granitoids in a NW- SE trend. Serpentinized amphibole-peridotites are the main types of ultramafic rocks in this area. Minerals in these rocks i...

Low-grade metamorphic temperature conditions associated with the Sanbagawa event were estimated by Raman spectroscopy of carbonaceous material (RSCM) in pelitic rocks and an electron backscatter diffraction (EBSD) analysis quartz siliceous rocks. Analytical samples collected from complex, Mikabu greenstones, Chichibu accretionary complex eastern Kanto Mountains, central Japan. Previously, low-g...

This study provided data that can be used to discriminate asbestiform and non-asbestiform amphiboles contained in landscaping rocks recreational parks. The length width of fibers being at least 5 μm long with a minimum aspect ratio 3:1 were measured using transmission electron microscope compared an asbestos reference sample. park samples thicker than 1 (average 1.9 μm), while the Health Safe...

In the early 1970s, it became a concern that exposure to the mineral fibers associated taconite ore processed in Silver Bay, Minnesota would cause asbestos-related disease including gastrointestinal cancer. At that time data gaps existed which have now been significantly reduced by further research. To further our understanding of the types of airborne fibers in Silver Bay we undertook a geolog...

Abstract The transfer of material from subducting slabs to the overlying mantle is one most important processes regulating Earth’s geochemical cycles. A major part this cycling involves slab devolatilization and release sediment- slab-derived fluids wedge, triggering melting subsequent arc volcanism. Previous geodynamic, geophysical, studies have revealed many controls on fluid fluxing its mani...

Malignant mesothelioma is a highly aggressive tumor of the serous membranes, which in humans results from exposure to asbestos and asbestiform fibers. Although occupational malignant mesothelioma is still the most common form of this lesion, naturally contaminated soil can play an important role in the development of environmental malignant mesothelioma in some parts of the world. Fifty cases o...

BACKGROUND Inhalation of asbestos and other mineral fibers is known causes of malignant mesothelioma (MM) and lung cancers. In a setting of occupational exposure to asbestos, MM occurs four to eight times more frequently in men than in women, at the median age of 74 years, whereas an environmental exposure to asbestos causes the same number of MMs in men and women, at younger ages. METHODS We...