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Journal of Geochemical Exploration, 110 (2), pg. 193-201. doi: dx.doi.org/10.1016/j.gexplo.2011.05.008
Recent efforts to understand Earth's elemental metal cycles have produced estimates for the integrated human-natural system metal mass reservoir stocks and inter-reservoir metal mass flows. These globally comprehensive metal cycles, called anthrobiogeochemical cycles, have been generated for Al, Fe, Cu, Zn, Ni, Pb, Ag, and Cr. While useful in visualizing the totality of Earth's metal cycle...
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Geochem. Geophys. Geosyst., v. 12, Q08001, 18 PP., 2011
Isotope systematics of basalts provide information on the distribution of mantle components and the length scale of mantle heterogeneity. To obtain this information high data and sampling density are crucial. We present hafnium and neodymium isotope data on more than four hundred oceanic volcanics. Over length scales of several hundred to over one thousand kilometers hafnium and neodymium isotopes of mid-ocean ridge basalts are...
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Geochem. Geophys. Geosyst. v. 12, Q03016. doi: dx.doi.org/10.1029/2010GC003490
We have developed applications that allow display of various geoscience data in Google Earth. Our project aims to compile research results from different fields on the same virtual globe and to provide new cross-disciplinary information for understanding of the Earth's interior and dynamics. Google Earth uses Keyhole Markup Language (KML) files to import data. Our inventory of converters, which we...
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“Perspective on the genesis of E-MORB from chemical and isotopic heterogeneity at 9-10ºN East Pacific Rise.” Waters, C.L., Sims, K.W.W., Perfit, M.R., Blichert-Toft, J., Blusztajn, J. (2011) Journal of Petrology, v. 52, p. 565-602.
The study of chemically and isotopically enriched mid-ocean ridge basalts (E-MORB) has offered substantial insight into the origin of mantle heterogeneity, but the exact processes involved in producing this E-MORB enrichment are vigorously debated. Additionally, because the ages of E-MORB are not well constrained, the temporal petrogenetic and geological relationships between E-MORB and normal (N)-MORB are not known. To investigate these relationships, we measured major and trace...
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Geophysical evidence and numerical models of mantle stirring imply the source of mid-ocean ridge basalts (MORBs) comprises most of the mantle, excepting only the D″ region and the “superpile” anomalies deep under Africa and the Pacific. Geophysical evidence is also strong that the mantle is heated substantially from within. Geochemical inferences of a strongly depleted MORB source are inconsistent with this picture because they would require the MORB source to be heated mainly...
Journal of Geochemical Exploration, 110 (2), pg. 193-201. doi: dx.doi.org/10.1016/j.gexplo.2011.05.008 Recent efforts to understand Earth's elemental metal cycles have produced estimates for the integrated human-natural system metal mass reservoir stocks and inter-reservoir metal mass flows. These globally comprehensive metal cycles, called anthrobiogeochemical cycles, have been generated for Al, Fe, Cu, Zn, Ni, Pb, Ag, and Cr. While useful in visualizing the totality of Earth's metal cycle...
Geochem. Geophys. Geosyst., v. 12, Q08001, 18 PP., 2011 Isotope systematics of basalts provide information on the distribution of mantle components and the length scale of mantle heterogeneity. To obtain this information high data and sampling density are crucial. We present hafnium and neodymium isotope data on more than four hundred oceanic volcanics. Over length scales of several hundred to over one thousand kilometers hafnium and neodymium isotopes of mid-ocean ridge basalts are...
Geochem. Geophys. Geosyst. v. 12, Q03016. doi: dx.doi.org/10.1029/2010GC003490 We have developed applications that allow display of various geoscience data in Google Earth. Our project aims to compile research results from different fields on the same virtual globe and to provide new cross-disciplinary information for understanding of the Earth's interior and dynamics. Google Earth uses Keyhole Markup Language (KML) files to import data. Our inventory of converters, which we...
