Alexandra R. Heri

ORCID: 0009-0005-4468-164X
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About
Contact & Profiles
Research Areas
  • Geological and Geochemical Analysis
  • earthquake and tectonic studies
  • Geochemistry and Geologic Mapping
  • Mineralogy and Gemology Studies
  • Geology and Paleoclimatology Research
  • Marine and environmental studies
  • Hydrocarbon exploration and reservoir analysis
  • Paleontology and Stratigraphy of Fossils
  • Groundwater and Isotope Geochemistry
  • Radioactive element chemistry and processing
  • Geochemistry and Elemental Analysis
  • High-pressure geophysics and materials

University of Hong Kong
2011-2019

University of Houston
2019

Chinese University of Hong Kong
2013

University of Bern
2011-2013

Abstract Muscovite B4M, distributed in 1961 as an age standard, was ground under ethanol. Five grain size fractions were obtained and characterized by X-ray diffraction. They display a mixing trend between phengitic (enriched the fraction <0.2 µm) muscovitic component (predominant >20 µm). High-pressure phengite is preserved relict retrograde muscovite. Electron microprobe analyses of mineral separate reveal at least four white mica populations based on Si, Al, Mg, Na, Fe F. Rb/K...

10.1144/sp378.2 article EN Geological Society London Special Publications 2013-01-24

Abstract Eocene dykes extending over 50 km along the southern margin of Ladakh batholith (NW India) fall into two main groups showing different orientations, as well isotope and trace element geochemistry. Both dyke families formed in same tectonic setting a time span approximately 4 Ma. However, each family is far from monolithic, therefore we tested several statistical approaches to identify geochemical subgroups rare earth (REE) data relate them magmatogenetic processes. Hierarchical...

10.1144/sp481-2017-150 article EN Geological Society London Special Publications 2019-04-12
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