Abstract Extreme precipitation events are challenging to local and regional stakeholders across the United States. The Missouri River Basin (MoRB), covering an area over 1.29 million km 2 , is prone extreme events. These exacerbated by complex terrain in west numerous weather climate features which impact region on a seasonal/annual basis (low-level jets, mesoscale convective systems, cold air ...

The Southwest Indian Ridge (SWIR) at 9^168E and 52^538S is characterized by ultra-slow, oblique spreading and contains one of the few documented occurrences of pyroxenite veins associated with abyssal peridotites. The origin of these uncommon lithologies is still debated.We present a detailed study (including electron microprobe and laser ablation inductively coupled plasma mass spectrometry) o...

Evidence from abyssal peridotites suggests that significant chemical reaction with peridotite can occur during the early stages of cooling and crystallization of mid-ocean ridge basalt (MORB) magmas. We evaluate the hypothesis that reactive crystallization (crystallization influenced by such melt^rock reaction) could cause magma compositions to evolve along a different chemical trajectory than ...

Abstract The phenomena of reactive percolation enriched asthenospheric melts and pervasive melt-rock interactions at mid oceanic ridge-rift systems are the principal proponents for mantle refertilization compositional heterogeneity. This study presents new mineralogical geochemical data abyssal peridotites exposed along Vema Vityaz fracture zones Central Indian Ridge (CIR) to address factors co...

[1] Abstract: We studied trace element geochemistry and petrology of the crust-mantle transition zone (MTZ) in the Samail massif of the Oman ophiolite to constrain the location where different primitive magmas mix beneath an oceanic spreading ridge. The MTZ is the deepest location where crystallization took place and thus is an ideal place to determine the compositional diversity of melts leavi...

www.thelancet.com Vol 383 May 17, 2014 1697 10 WHO. IHR Emergency Committee concerning Middle East respiratory syndrome coronavirus (MERS-CoV). July 9, 2013. http://www.who.int/ihr/ ihr_ec_2013/en/ (accessed May 6, 2014). 11 Independent Monitoring Board of the Global Polio Eradication Initiative. Sixth Report. London: Independent Monitoring Board, November, 2012. 12 WHO. International travel an...

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A fundamental challenge in modern mantle geochemistry is to link geochemical data with geological and geophysical observations. Most of the early geochemical models involved a layered mantle and the concept of geochemical reservoirs. Indeed, the two layer mantle model has been implicit in almost all geochemical literature and the provenance of oceanic island basalt (OIB) and mid-ocean ridge bas...

Earth’s dominant form of magmatism occurs at mid-ocean ridges (MORs), producing the igneous crust for two-thirds of the planet’s surface and conveying significant heat and material fluxes from the mantle to the world’s oceans. Mid-ocean-ridge basalt (MORB) magmas form from upwelling compositionally heterogeneous mantle1 by aggregation of near-fractional melts beneath spreading centres2. Multipl...