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Oxygen isotope compositions of epidote and quartz from chloritic breccias that underlie the detachment fault in the metamorphic core complex of the Whipple Mountains yielded quartz-epidote fractionations that range from 4.1 to 6.4 per mil and increase systematically toward the fault. These fractionations give mean temperatures that decrease from ∼432°C at 50 meters below the fault to ∼350°C at 12 meters below the fault. This extreme thermal gradient of 82°C over 38 meters (2160°C per kilometer) is best explained by advective heat extraction by means of circulating surface-derived fluids. Models of lithospheric extension consider only conductive cooling resulting from tectonic denudation and thus require revision to include fluid-induced fault-zone refrigeration.

We describe the phenotypic characteristics of 25 individuals with oculo-auriculo-vertebral spectrum (OAVS) and its variants, seen in Northern Ireland between 1969-1989, with special reference to cardiovascular defects. We report the type and prevalence of cardiovascular findings and also estimate the minimum prevalence rate of OAVS to be 1 in 45,000.

Five laboratory-acquired brucellosis (LAB) cases that occurred in the United States between 2008 and 2011 are presented. The Centers for Disease Control and Prevention (CDC) reviewed the recommendations published in 2008 and the published literature to identify strategies to further prevent LAB. The improved prevention strategies are described.

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A uranyl triazole (UO(2))(2)[UO(4)(trz)(2)](OH)(2) (1) (trz = 1,2,4-triazole) was prepared using a mild solvothermal reaction of uranyl acetate with 1,2,4-triazole. Single-crystal X-ray diffraction analysis of 1 revealed it contains sheets of uranium-oxygen polyhedra and that one of the U(VI) cations is in an unusual coordination polyhedron that is intermediate between a tetraoxido core and a uranyl ion. This U(VI) cation also forms cation-cation interactions (CCIs). Infrared, Raman, and XPS spectra are provided, together with a thermogravimetric analysis that demonstrates breakdown of the compound above 300 °C. The UV-vis-NIR spectrum of 1 is compared to those of another compound that has a range of U(VI) coordination enviromments.

Oxygen isotope ratios, whole rock major and trace element compositions, and petrological characteristics of 52 samples from nine distinct igneous lithologies in the lower plate of the Whipple Mountain metamorphic core complex of south-eastern California indicate that both mylonitic and non-mylonitic lithologies underwent exchange with surface-derived meteoric waters. Broadly granodioritic lithologies are characterized by whole rock 6 I K 0 values that range from 10.6 to 2.6%. Isotopic compositions of quartz and feldspar mineral separates indicate that quartz has largely retained original igneous compositions but that feldspar has undergone variable and often large "0-depletions (up to 6.5%).Over 4 km of structural relief is exposed in lower plate gneisses below the Whipple detachment fault including non-mylonitic lithologies at shallow structural levels above the mylonite front, and mylonitic gneisses at intermediate to deep levels below the mylonite front. Coupled 61xOo,, -6"0,, systematics of non-mylonitic and mylonitic andesite to rhyolite dykes from shallow and intermediate structural levels of the lower plate document two episodes of hydrothermal alteration: a high-temperature ( A . 600" C) episode involving a metamorphic or magmatic fluid with 6"O values = 7 L and a low-temperature (c. 350" C) episode involving 1 0 w -6~~0 meteoric fluids. All the dykes that document exchange with meteoric fluids are non-mylonitic. Coupled 6 "OOtr -6 "OFSp systematics of non-mylonitic and mylonitic granodioritic gneisses from above and below the mylonite front also document low-temperature (c. 350" C) exchange with meteoric fluids. The data indicate that infiltration of meteoric fluids occurred as lower plate lithologies were juxtaposed against the base of the faulted upper plate. High-angle normal faults in the upper plate served as the conduits for the downward circulation of surface-derived fluids. Meteoric fluids were able to penetrate across the detachment fault into the lower plate.Uplift rates coupled with independent cooling rates indicate that surface-derived fluids penetrated to a depth of c. 4 km and possibly as deep as c . 8 km. Penetration of surface-derived fluid into the ductile deformation regime is not required to explain the low 6I8O values observed in lower plate lithologies of the Whipple Mountain metamorphic core complex.

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