School of Earth and Environment

Dr Maren Kahl

Visiting Research Fellow

Telephone number: +44(0) 113 34 35543
Email address: M.Kahl@leeds.ac.uk
Room: 8.151

Biography

Maren studied Mineralogy at the Ruprecht-Karls Universitaet Heidelberg (Germany). After her Diploma degree, with a focus on light element zonation in magmatic phenocrysts, she did a PhD at the Ruhr-Universitaet Bochum (Germany). Her PhD studies focused on the quantification of magma mixing and magma recharge beneath Mt. Etna (Sicily) by modeling the diffusive relaxation of compositional zoning patterns preserved in olivine crystals.

Since May 2012 Maren is a Visiting Research Fellow at the School of Earth and Environment based on a Research Fellowship of the Deutsche Forschungsgemeinschaft (DFG)

Qualifications

04/2006-02/2011 PhD Ruhr-Universitaet Bochum, Germany

Thesis: "Timescales of magma mixing and magma recharge – a case study from Mt. Etna (Sicily, Italy)" supervised by Prof. Sumit Chakraborty (Ruhr-Universitaet Bochum) and Dr. Fidel Costa (Earth Observatory of Singapore, Nanyang Technological University Singapore)

10/2005 Diploma degree Ruprecht-Karls Universitaet Heidelberg, Germany

Thesis: "The chemical internal structure of phenocrysts from the Laacher See-Tephra (East Eifel volcanic field, Germany) including Li, Be and B" supervised by Prof. Rainer Altherr (Ruprecht-Karls Universitaet Heidelberg)

Memberships/Fellowships

Deutsche Mineralogische Gesellschaft (DMG)

Research Interests

  • Studying the compositional record of compositionally zoned (magmatic) minerals to decipher the sequence of magmatic events preserved in their chemical stratigraphy

  • Application of (sequential) kinetic modelling in conjunction with the chemical stratigraphy preserved in zoned minerals to recover the timescales and durations of individual magmatic events (e.g. magma mixing)

  • Tracking magma plumbing system dynamics using an integrated methodology that combines volcano monitoring and kinetic (diffusion) modelling

Project details

Project title

"Using the chemical stratigraphy in magmatic crystals to track the evolutionary history of a dynamic magma plumbing System"

Project collaborators: Dr. Daniel Morgan, University of Leeds and Dr. Carl Thornber (CVO-USGS)

Funding

Research Fellowship of the Deutsche Forschungsgemeinschaft (DFG)

Project outline

This project aims tracking the pre-eruptive magma storage and transfer conditions of the 1950 Mauna Loa (Hawaii) eruption by studying the compositional and temporal record preserved in chemically zoned magmatic crystals (olivine, orthopyroxene and clinopyroxene). Sequential kinetic (diffusion) modelling of the chemical stratigraphy allows recovering the timescales of magma mixing and magma transfer through different compartments defining the sub-volcanic plumbing system of Mauna Loa.

Publications

Kahl M, Chakraborty S, Costa F and Pompilio M (2011) Dynamic plumbing system beneath volcanoes revealed by kinetic modeling, and the connection to monitoring data: An example from Mt. Etna. Earth Planet Sci Lett 308, 11-22

Kahl M, Chakraborty S, Costa F, Pompilio M, Liuzzo M and Viccaro M (2013) Compositionally zoned crystals and real-time degassing data reveal changes in magma transfer dynamics during the 2006 summit eruptive episodes of Mt. Etna. Bull Volcanol 75:692 DOI 10.1007/s00445-013-0692-7