@article{RibackiTrumbullLopezDeLuchietal.2022,
  author    = {Ribacki, Enrico and Trumbull, Robert B. and Lopez De Luchi, Monica Graciela and Altenberger, Uwe},
  title     = {The chemical and B-Isotope composition of Tourmaline from intra-granitic Pegmatites in the Las Chacras-Potrerillos Batholith, Argentina},
  series = {The Canadian mineralogist : journal of the Mineralogical Association of Canada},
  volume    = {60},
  journal   = {The Canadian mineralogist : journal of the Mineralogical Association of Canada},
  number    = {1},
  publisher = {Association of Canada},
  address   = {Ottawa},
  issn      = {0008-4476},
  doi       = {10.3749/canmin.2100036},
  pages     = {49 -- 66},
  year      = {2022},
  abstract  = {The Devonian Las Chacras-Potrerillos batholith comprises six nested monzonitic to granitic intrusions with metaluminous to weakly peraluminous composition and a Sr-Nd isotopic signature indicating a dominantly juvenile mantle-derived source. The chemically most evolved units in the southern batholith contain a large number of intra-granitic, pod-shaped tourmaline-bearing pegmatites. This study uses in situ chemical and boron isotopic analyses of tourmaline from nine of these pegmatites to discuss their relationship to the respective host intrusions and the implications of their B-isotope composition for the source and evolution of the magmas. The tourmalines reveal a diversity in element composition (e.g., FeO, MgO, TiO2, CaO, MnO, F) which distinguishes individual pegmatites from one another. However, all have a narrow 5 11 B range of -13.7 to -10.5\%0 (n = 100) which indicates a relatively uniform magmatic system and similar temperature conditions during tourmaline crystallization. The average delta(11) B value of -11.7\%0 is typical for S-type granites and is within the range reported for peraluminous granites. pegmatites, and metamorphic units of the Ordovician basement into which the Las Chacras-Potrerillos batholith intruded. The B-isotope evidence argues for a crustal boron source like that of the Ordovician basement, in contrast to the metaluminous to weakly peraluminous composition and juvenile initial Sr and Nd isotope ratios of the Las Chacras-Potrerillos batholith magmas. We propose that the boron was not derived from the magma source region but was incorporated from dehydration melting of elastic metasedimentary rocks higher up in the crustal column.},
  language  = {en}
}
@article{SiegmundFunkKoszinskyetal.2018,
  author    = {Siegmund, Nicole and Funk, Roger and Koszinsky, Sylvia and Buschiazzo, Daniel and Sommer, Michael},
  title     = {Effects of low-scale landscape structures on aeolian transport processes on arable land},
  series = {Aeolian Research},
  volume    = {32},
  journal   = {Aeolian Research},
  publisher = {Elsevier},
  address   = {Oxford},
  issn      = {1875-9637},
  doi       = {10.1016/j.aeolia.2018.03.003},
  pages     = {181 -- 191},
  year      = {2018},
  abstract  = {The landscape of the semiarid Pampa in central Argentina is characterized by late Pleistocene aeolian deposits, covering large plains with sporadic dune structures. Since the current land use changed from extensive livestock production within the Caldenal forest ecosystem to arable land, the wind erosion risk increased distinctly. We measured wind erosion and deposition patterns at the plot scale and investigated the spatial variability of the erosion processes. The wind-induced mass-transport was measured with 18 Modified Wilson and Cooke samplers (MWAC), installed on a 1.44 ha large field in a 20 x 40 m grid. Physical and chemical soil properties from the upper soil as well as a digital elevation model were recorded in a 20 x 20 m grid. In a 5-month measuring campaign data from seven storms with three different wind directions was obtained. Results show very heterogeneous patterns of erosion and deposition for each storm and indicate favoured erosion on windward and deposits on leeward terrain positions. Furthermore, a multiple regression model was build, explaining up to 70\% of the spatial variance of erosion by just using four predictors: topsoil thickness, relative elevation, soil organic carbon content and slope direction. Our findings suggest a structure-process-structure complex where the landscape structure determines the effects of recent wind erosion processes which again slowly influence the structure, leading to a gradual increase of soil heterogeneity.},
  language  = {en}
}