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Late Archean molecular fossils from the Transvaal Supergroup record the antiquity of microbial diversity and aerobiosis
Abstract Cores recovered during the Agouron Griqualand Drilling Project contain over 2500 m of well-preserved late Archean Transvaal Supergroup sediments, dating from ca. 2.67 to 2.46 Ga. BitumenExpand
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Mass-independent fractionation of mercury isotopes in Arctic snow driven by sunlight
In the Arctic spring, sunlight-induced reactions convert gaseous elemental mercury into compounds that are rapidly deposited on the snowpack. Analysis of the isotopic composition of mercury in snowExpand
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Himalayan Metamorphism and Its Tectonic Implications
The Himalayan range exposes a spectacular assemblage of metamorphic rocks from the midand deep crust that have fostered numerous models of how the crust responds to continental collisions. RecentExpand
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Isotopic composition and fractionation of mercury in Great Lakes precipitation and ambient air.
Atmospheric deposition is a primary pathway by which mercury (Hg) enters terrestrial and aquatic ecosystems; however, the chemical and meteorological processes that Hg undergoes from emission toExpand
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Mercury Isotopes in Earth and Environmental Sciences
Virtually all biotic, dark abiotic, and photochemical transformations of mercury (Hg) produce Hg isotope fractionation, which can be either mass dependent (MDF) or mass independent (MIF). The largestExpand
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Cenozoic topographic and climatic response to changing tectonic boundary conditions in Western North America
Abstract This study presents an oxygen isotopic record from the Paleocene to the Pliocene based on the analysis of predominantly paleosol carbonate from intermontane basins in southwestern MontanaExpand
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Investigation of local mercury deposition from a coal-fired power plant using mercury isotopes.
Coal combustion accounts for approximately two-thirds of global anthropogenic mercury (Hg) emissions. Enhanced deposition of Hg can occur close to coal-fired utility boilers (CFUBs), but it isExpand
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Mercury stable isotopes in sediments and largemouth bass from Florida lakes, USA.
  • L. Sherman, J. Blum
  • Medicine, Chemistry
  • The Science of the total environment
  • 15 March 2013
Humans and wildlife can be exposed to mercury (Hg) through the consumption of fish with elevated concentrations of methylmercury (MeHg). Studies have shown that increased atmospheric deposition of HgExpand
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Assessing Sources of Human Methylmercury Exposure Using Stable Mercury Isotopes
Seafood consumption is the primary route of methylmercury (MeHg) exposure for most populations. Inherent uncertainties in dietary survey data point to the need for an empirical tool to confirmExpand
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Mercury isotopic composition of hydrothermal systems in the Yellowstone Plateau volcanic field and Guaymas Basin sea-floor rift
Abstract To characterize mercury (Hg) isotopes and isotopic fractionation in hydrothermal systems we analyzed fluid and precipitate samples from hot springs in the Yellowstone Plateau volcanic fieldExpand
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