User profiles for Joel D. Blum

Joel Blum

Professor of Earth and Environmental Sciences, University of Michigan
Verified email at umich.edu
Cited by 28510

Mercury isotopes in earth and environmental sciences

JD Blum, LS Sherman… - Annual Review of Earth …, 2014 - annualreviews.org
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 (…

Mycorrhizal weathering of apatite as an important calcium source in base-poor forest ecosystems

JD Blum, A Klaue, CA Nezat, CT Driscoll, CE Johnson… - Nature, 2002 - nature.com
The depletion of calcium in forest ecosystems of the northeastern USA 1 , 2 , 3 is thought to
be a consequence of acidic deposition and to be at present restricting the recovery of forest …

Methylmercury production below the mixed layer in the North Pacific Ocean

JD Blum, BN Popp, JC Drazen, C Anela Choy… - Nature …, 2013 - nature.com
Mercury enters marine food webs in the form of microbially generated monomethylmercury.
Microbial methylation of inorganic mercury, generating monomethylmercury, is widespread …

The middle Pleistocene transition: characteristics, mechanisms, and implications for long-term changes in atmospheric pCO2

PU Clark, D Archer, D Pollard, JD Blum, JA Rial… - Quaternary Science …, 2006 - Elsevier
The emergence of low-frequency, high-amplitude, quasi-periodic (∼100-kyr) glacial variability
during the middle Pleistocene in the absence of any significant change in orbital forcing …

Mass-dependent and-independent fractionation of Hg isotopes by photoreduction in aquatic systems

BA Bergquist, JD Blum - Science, 2007 - science.org
Mercury (Hg) isotopes can be used as tracers of Hg biogeochemical pathways in the environment.
The photochemical reduction of aqueous Hg species by natural sunlight leads to both …

Recent developments in mercury stable isotope analysis

JD Blum, MW Johnson - Reviews in Mineralogy and …, 2017 - pubs.geoscienceworld.org
Isotopes was compiled before it was appropriate to include a chapter on mercury (Hg)
stable isotope geochemistry. At that time there were only a few papers on this new topic (Jackson …

Reporting of variations in the natural isotopic composition of mercury

JD Blum, BA Bergquist - Analytical and bioanalytical chemistry, 2007 - Springer
High-precision measurements of natural variations in the stable isotopic composition of mercury
show great promise as a new tracer of mercury sources and chemical transformations in …

87Sr/86Sr ratios of Sierra Nevada stream waters: Implications for relative mineral weathering rates

JD Blum, Y Erel, K Brown - Geochimica et Cosmochimica Acta, 1993 - Elsevier
… waters: Implications for relative mineral weathering rates JOEL D. BLUM, I YIGAL EREL,t'2
and … ofelapsed time since a fresh granitoid bedrock 5019 5020 JD Blum, Y. Erel, and K. Brown …

Carbonate versus silicate weathering in the Raikhot watershed within the High Himalayan Crystalline Series

JD Blum, CA Gazis, AD Jacobson… - …, 1998 - pubs.geoscienceworld.org
The major element and Sr isotope geochemistry of surface waters, bedrock, and river sands
was investigated in the Raikhot watershed within the High Himalayan Crystalline Series (…

Determination of soil exchangeable-cation loss and weathering rates using Sr isotopes

EK Miller, JD Blum, AJ Friedland - Nature, 1993 - nature.com
To assess the response of forests to a changing chemical environment, a means is needed
for separating the total cation export from the watershed into a component derived from …