D
Dawnika L. Blatter
Researcher at University of California, Berkeley
Publications - 9
Citations - 419
Dawnika L. Blatter is an academic researcher from University of California, Berkeley. The author has contributed to research in topics: Andesite & Geology. The author has an hindex of 5, co-authored 5 publications receiving 379 citations.
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Hornblende peridotite xenoliths from central Mexico reveal the highly oxidized nature of subarc upper mantle
TL;DR: In this article, amphibole-rich spinel lherzolite and chromite websterite were found to be rare samples of subarc upper mantle from a region of continuing subduction and they are the most oxidized mantle peridotites yet described.
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Hydrous phase equilibria of a Mexican high-silica andesite:A candidate for a mantle origin?
TL;DR: A group of Pleistocene-recent lavas, with 62 to 64% SiO2 and 5.6 to 3.5% MgO, have erupted along a linear fault system near the volcanic front of central Mexico.
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Plagioclase-free andesites from Zitácuaro (Michoacán), Mexico: petrology and experimental constraints
TL;DR: In this article, a small cluster of Pleistocene andesite cones and flows are classified into two distinct groups: high-magnesium andesites (>6% MgO, 57-59% SiO2), conveniently called basalt-andesites, with phenocrysts of orthopyroxene and augite, or augite and olivine, at pressures of about 1 kbar.
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Neogene volcanism at the front of the central Mexican volcanic belt: Basaltic andesites to dacites, with contemporaneous shoshonites and high-TiO2 lava
TL;DR: In this article, a 50 km-wide segment of the central part of the Mexican volcanic belt has been mapped, and five types of lava have been found, including shoshonites, quaternary basaltic andesite, high-TiO 2 lavas, and porphyritic dacite.
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Mantle peridotite xenoliths in andesite lava at El Peñon, central Mexican Volcanic Belt: Isotopic and trace element evidence for melting and metasomatism in the mantle wedge beneath an active arc
TL;DR: In this paper, the authors show that the hornblende-bearing ultramafic xenoliths and clinopyroxene megaxenocrysts from El Penon in the central Mexican Volcanic Belt were brought to the surface by a Quaternary high-Mg siliceous andesite, a rock type usually considered too evolved to be a direct product of mantle melting.