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Anja Rosenthal
University of Bayreuth
24Publications
13H-index
941Citations
Publications 24
Newest
Published on Oct 1, 2018in Geochimica et Cosmochimica Acta 4.26
Fanny Sorbadere1
Estimated H-index: 1
(University of Bayreuth),
Vera Laurenz4
Estimated H-index: 4
(University of Bayreuth)
+ 4 AuthorsCamille Rivard6
Estimated H-index: 6
Abstract In order to better understand the behaviour of Fe 3+ during partial melting of a mid-ocean-ridge-basalt (MORB) mantle source, we performed partial melting experiments of a spinel peridotite at 1.5 GPa, between 1320 and 1450 °C, and over a range of oxygen fugacities ( f O 2 ) varying from FMQ-3.5 to FMQ+6 (log-units relative to FMQ = Fayalite-Magnetite-Quartz oxygen buffer). Changes in f O 2 were achieved using different capsule materials and by varying the oxidation state of the startin...
Published on Aug 1, 2018in Lithos 3.91
Anja Rosenthal13
Estimated H-index: 13
(University of Bayreuth),
Gregory M. Yaxley31
Estimated H-index: 31
(ANU: Australian National University)
+ 6 AuthorsAnne-Aziliz Pelleter1
Estimated H-index: 1
(CNRS: Centre national de la recherche scientifique)
Abstract This study investigates the phase and melting relations of nominally ‘dry’ residual eclogites (Res2 and Res3), with varying bulk CaO/Na 2 O ratios (4 and 12, respectively), from ~160 (5 GPa) to ~90 km (3 GPa) depth. Garnet, clinopyroxene and minor quartz/coesite are subsolidus phases in both compositions. In contrast to Res2, in Res3, the proportions of garnet always exceeding those of clinopyroxene. This also leads to higher modal quartz/coesite in Res3 relative to Res2. In modelling m...
Published on Feb 1, 2018in Geochimica et Cosmochimica Acta 4.26
Christopher Beyer5
Estimated H-index: 5
(University of Bayreuth),
Anja Rosenthal13
Estimated H-index: 13
(Charles University in Prague)
+ 4 AuthorsDaniel J. Frost53
Estimated H-index: 53
(University of Bayreuth)
Abstract We have performed an experimental cross calibration of a suite of mineral equilibria within mantle rock bulk compositions that are commonly used in geobarometry to determine the equilibration depths of upper mantle assemblages. Multiple barometers were compared simultaneously in experimental runs, where the pressure was determined using in-situ measurements of the unit cell volumes of MgO, NaCl, Re and h-BN between 3.6 and 10.4 GPa, and 1250 and 1500 °C. The experiments were performed i...
Published on Dec 1, 2017in Scientific Reports 4.01
Gregory M. Yaxley31
Estimated H-index: 31
(ANU: Australian National University),
Andrew J. Berry29
Estimated H-index: 29
(ANU: Australian National University)
+ 2 AuthorsDavid L. Paterson91
Estimated H-index: 91
(Australian Synchrotron)
We present the first oxygen fugacity (fO2) profile through the cratonic lithospheric mantle under the Panda kimberlite (Ekati Diamond Mine) in the Lac de Gras kimberlite field, central Slave Craton, northern Canada. Combining this data with new and existing data from garnet peridotite xenoliths from an almost coeval kimberlite (A154-N) at the nearby Diavik Diamond Mine demonstrates that the oxygen fugacity of the Slave cratonic mantle varies by several orders of magnitude as a function of depth ...
Published on Sep 1, 2017in American Mineralogist 2.63
Katharina Marquardt13
Estimated H-index: 13
(University of Bayreuth),
Marc De Graef34
Estimated H-index: 34
(CMU: Carnegie Mellon University)
+ 3 AuthorsSanae Koizuimi1
Estimated H-index: 1
(UTokyo: University of Tokyo)
Electron backscatter diffraction (EBSD) data yield plentiful information on microstructure and texture of natural as well as experimentally produced mineral and rock samples. For instance, the characterization of microstructures and textures by EBSD allows for the evaluation of phase equilibria. Furthermore, determination of the preferred orientations of crystals using EBSD yields constraints on deformation mechanisms and history of the minerals/rocks. The latter affects bulk-rock properites, fo...
Published on Sep 1, 2017in Earth and Planetary Science Letters 4.64
Robert Farla2
Estimated H-index: 2
(University of Bayreuth),
Anja Rosenthal13
Estimated H-index: 13
(Charles University in Prague)
+ 6 AuthorsDaniel J. Frost53
Estimated H-index: 53
(University of Bayreuth)
Abstract The rheology of eclogite, garnetite and clinopyroxenite in the peridotitic upper mantle was experimentally investigated in a large volume press combined with in situ synchrotron X-ray diffraction techniques to study the impact on mantle convection resulting from the subduction of oceanic lithosphere. Experiments were carried out over a range of constant strain rates ( 2 × 10 − 6 – 3 × 10 − 5 s − 1 ), pressures (4.3 to 6.7 GPa) and temperatures (1050 to 1470 K). Results show substantial ...
Published on May 1, 2015in Japan Geoscience Union
Robert Farla2
Estimated H-index: 2
,
Anja Rosenthal13
Estimated H-index: 13
+ 3 AuthorsDaniel J. Frost53
Estimated H-index: 53
Published on May 1, 2015in Scientific Reports 4.01
Anja Rosenthal13
Estimated H-index: 13
(University of Bayreuth),
Gregory M. Yaxley31
Estimated H-index: 31
(ANU: Australian National University)
+ 3 AuthorsCarl Spandler27
Estimated H-index: 27
(JCU: James Cook University)
Large-scale tectonic processes introduce a range of crustal lithologies into the Earth's mantle. These lithologies have been implicated as sources of compositional heterogeneity in mantle-derived magmas. The model being explored here assumes the presence of widely dispersed fragments of residual eclogite (derived from recycled oceanic crust), stretched and stirred by convection in the mantle. Here we show with an experimental study that these residual eclogites continuously melt during upwelling...
Published on Feb 1, 2015in Earth and Planetary Science Letters 4.64
Anja Rosenthal13
Estimated H-index: 13
(University of Bayreuth),
Erik H. Hauri64
Estimated H-index: 64
(CIS: Carnegie Institution for Science),
Marc M. Hirschmann55
Estimated H-index: 55
(UMN: University of Minnesota)
Abstract To determine partitioning of C between upper mantle silicate minerals and basaltic melts, we executed 26 experiments between 0.8 and 3 GPa and 1250–1500 °C which yielded 37 mineral/glass pairs suitable for C analysis by secondary ion mass spectrometry (SIMS). To enhance detection limits, experiments were conducted with 13 C-enriched bulk compositions. Independent measurements of 13 C and 12 C in coexisting phases produced two C partition coefficients for each mineral pair and allowed as...
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