Dr. Julia Walter-Roszjár

Position:

Staff scientist

Function:

- Research on meteorites

- Classification of meteorites
- Guided tours through the meteorite collection
 

Contact:

Phone:+43 1 52177-393
Fax: +43 1 52177-264

2010-2012: Research Associate in DFG priority program SPP 1385: The first 10 Million Years of the Solar System - a Planetary Materials Approach, Sub-project: Early evolution of meteorite parent bodies - Hf-W and U-Pb ages of zircons, baddeleyites, and phosphates, Funding: BI 344/9-1/2.

Education

  • 2009 - 2012: Dr. rer. nat., Planetology WWU Münster, Germany

      PhD Thesis: Genesis of igneous meteorites: Implications for the evolution of differentiated bodies in the Solar System

      Supervisor: Prof. Dr. A. Bischoff, Prof. K. Mezger Ph.D.

  • 2008: Summer school/ Misasa International Students Internship Program, Institute for the Study of the Earth`s Interior, Okayama University, Japan Project: An application of comprehensive geochemical analysis for carbonaceous-chondrite constituents

  • 2007 - 2009: Master of Science, Geosciences (with honors), WWU Münster, Germany

      Master thesis: Zirconium-bearing phases in meteorites

      Supervisor: Prof. Dr. A. Bischoff, Prof. K. Mezger PhD

  • 2003 - 2007: Bachelor of Science, Geosciences, WWU Münster, Germany

      Bachelor thesis: Development of a Monazite standard for the use in Geochronology

      Supervisor: Prof. K. Mezger PhD, Dr. J. Berndt-Gerdes

  • 2003: University-entrance diploma, Heinrich-Hertz-Gymnasium Erfurt, Germany

 

Positions

  • 2014 - present: Staff member NHM Vienna, Department for Mineralogy and Petrography

  • 2012 - 2014: Postdoctoral research scientist, Friedrich Schiller University Jena, Institut für Geowissenschaften, Analytical Mineralogy of Micro- and Nanostructures, Germany

  • 2010 - 2012: Research associate DFG Special Priority Program (SPP) 1385: The First 10 Million Years of the Solar System - a Planetary Materials Approach, sub-project (BI 344/9-1/2): Early evolution of meteorite parent bodies - Hf-W and U-Pb ages of zircons, baddeleyites, and phosphates

  • 2007 - 2010: Research associate, Institut für Planetologie, WWU Münster, Germany

  • 2007: Student assistant, Institut für Planetologie, WWU Münster, Germany

  • 2006: Six weeks scientific program, GFZ (German Research Centre For Geosciences) Potsdam, Germany, Project: The stability of talc (experimental studies)

  • 2005 - 2006: Student assistant, Office of Culture University of WWU Münster, Germany

 

Awards

  • 2015: SYNTHESYS grant SE-TAF-6116 “Extraterrestrial phosphates and their role as a sink for volatile elements and halogen fractionation processes in early-formed Solar System materials” at the Swedish Museum of Natural History (NRM) Stockholm, Sweden
  • 2015: Travel Grant, Invited contribution, Misasa V International Symposium “Comprehensive Exploration of the Solar System – Sample return and analyses”, held February 24-26, Institute for Study of the Earth’s Interior, Okayama University Misasa, Japan
  • 2012: Travel Grant, Invited contribution, Misasa IV International Symposium “Solar System Exploration and new Geosciences – Perspective for the next decade”, held March 6-8, Institute for Study of the Earth’s Interior, Okayama University Misasa, Japan
  • 2012: Best student paper award of the DFG (German Research Foundation) within the priority program (SPP) 1385: The First 10 Million Years of the Solar System - a Planetary Materials Approach
  • 2009: Department award, Department of Geosciences WWU Münster, Germany, awarded prize for the best M.Sc. thesis in Geosciences

  • 2008: Student Internship Stipend, 6-weeks ISEI (Insitute for the Study of the Earth`s Interior) International Students Internship Program, Okayama University, Misasa, Japan (Project: An application of comprehensive geochemical analysis for carbonaceous-chondrite constituents)

Field trip to impact site: Nördlinger Ries, Germany (2013)
Publications (peer reviewed journal articles)


Roszjar J., Moser D. E., Hyde B. C., Chanmuang C., Tait K. T. Comparing the primary chemical and structural micro-textures of early Solar System igneous zircon from asteroids, Mars and the Earth, (Wiley) AGU Geophysical Monograph Series Microstructural Geochronology; lattice to atom-scale records of planetary history, Eds: D. Moser, F. Corfu, S. Reddy, J. Darling, K. Tait. (in review).

 

Sarafian A., John T., Roszjar J., Whitehouse M. J. (2016) Chlorine and hydrogen degassing in Vesta's magma ocean. Earth and Planetary Science Letters 459:311-319.


Roszjar J., Whitehouse M. J., Srinivasan G., Mezger K., Scherer E. E., Van Orman J. A., Bischoff A. (2016) Prolonged magmatism on 4 Vesta inferred from Hf-W analyses of eucrite zircon. Earth and Planetary Science Letters 452:216-226.

 

Roszjar J., Whitehouse M.J., Bischoff A. (2014) Meteoritic zircon – Occurrence and chemical characteristics. Chemie der Erde – Geochemistry 74:453-469.
 

Llorca J., Roszjar J., Cartwright J. A., Bischoff A., Ott U., Pack A., Merchel S., Rugel G., Femiani L., Ludwig P., Casado J. V., Allepuz D. (2013) The Ksar Ghilane 002 shergottite - The 100th registered Martian meteorite fragment. Meteoritics and Planetary Science 48:493-513.

 

Roszjar J., Metzler K., Bischoff A., Barrat J.-A., Geisler T., Greenwood R. C., Franchi I. A., Klemme S. (2011) Thermal history of Northwest Africa (NWA) 5073 - a coarse-grained Stannern-trend eucrite containing cm-sized pyroxenes and large zircon grains. Meteoritics and Planetary Science 46:1754-1773.

 

Bischoff A., Vogel N., Roszjar J. (2011) The Rumuruti chondrite group - Invited review. Chemie der Erde - Geochemistry 71:101-133.

 

Wurm G., Teiser J., Bischoff A., Haack H., Roszjar J. (2010) Experiments on the Photophoretic Motion of Chondrules and Dust Aggregates - Indications for the Transport of Matter in Protoplanetary Disks. Icarus 208:482-491.

 

Llorca J., Casanova I., Trigo-Rodriguez, J. M. Madiedo J. M., Roszjar J., Bischoff A., Ott U., Franchi I., Greenwood R., Laubenstein M. (2009) The Puerto Lápice eucrite. Meteoritics and Planetary Science 44:159-174.

 

 

Invited Contributions


Roszjar, J., John, T., Whitehouse, M.J. (2015) Halogens from the early Solar System – Insights from meteoritic phosphates, MISASA V International Symposium, Comprehensive Exploration of the Solar System – Sample return and analysis, Abstract Volume, Misasa, Japan, held 06-08 March 2015.
 
Roszjar, J., Whitehouse, M.J., Bischoff A. (2015) Meteoritic zircon- rare and tiny, but of high relevance, MISASA V International Symposium, Comprehensive Exploration of the Solar System – Sample return and analysis, Abstract Volume, Misasa, Japan, held 06-08 March 2015.
 
Ferrière, L., Brandstätter, F., Roszjar, J. (2015) Big Bang at the NHM Vienna meteorite collection, MISASA V International Symposium, Comprehensive Exploration of the Solar System – Sample return and analysis, Abstract Volume, Misasa, Japan, held 06-08 March 2015.

 

Roszjar, J., Bischoff A., Mezger, K. (2012) New crystallization ages and a complex thermal history of the eucrite parent body inferred from eucrite zircon. MISASA IV International Symposium, Solar System Exploration and New Geosciences - Perspective of the next decade, Abstract Volume, Misasa, Japan, held 24-26 February 2012.

 

 

Publications (conference abstracts)


Roszjar J., Moser D. E., Hyde, B. C., Chanmuang, C., Tait, K., Nasdala L. (2016) Comparison of chemical zoning of eucrite and Martian micro-zircon Meteoritics & Planetary Science 51, #6306.
 
Ward D., Bischoff A., Roszjar J., Whitehouse M. J. (2016) Trace element inventory of meteoritic Ca-phosphates. Lunar Planet. Sci. XLVII, #1456, Lunar and Planetary Institute, Houston.
 
Ward D., Bischoff A., Roszjar J., Berndt J., Whitehouse M. J. (2016) Trace element abundances in extraterrestrial apatite and merrillite. Meteoritics & Planetary Science 51, #6306.
 
Ward D., Bischoff A., Roszjar J., Whitehouse M.J. (2015) REE content of Ca-phosphates. Meteoritics and Planetary Science 50, #5056.
 
Ward D., Bischoff A., Roszjar J., Whitehouse M.J. (2015) REE signatures of meteoritic Ca-phosphates. Paneth Kolloquium, Nördlingen, Germany, #0049.
 
Roszjar J., John T., Kusebauch, C., Whitehouse, M.J. (2015) Applying phosphate halogen compositions to trace magmatic or metamorphic fluids in inner Solar System materials. Geophys. Res. Abstr. 17: EGU2015-14888.

Ward D., Roszjar J., Bischoff A. (2014) Distribution and composition of accessory Ca-phosphates in meteorites. 5th DFG Special Priority Program 1385 meeting, 02-03 December, Heidelberg, Germany.

 

Ward D., Roszjar J., Bischoff A., Leschner L. (2014) Accessory Ca-phosphates in meteorites – distribution and composition. 92nd Annual Meeting of the German Mineralogical Society, 21-24 September, Jena, Germany, DMG-Meetings abstract volume, MET-P01.

 

Roszjar, J., Whitehouse, M.J., Bischoff, A. (2014) Rare earth element signatures of meteoritic zircon. 92nd Annual Meeting of the German Mineralogical Society, 21-24 September, Jena, Germany, DMG-Meetings abstract volume, MET-T02.

 

Roszjar, J., John, T., Whitehouse, M.J., Bischoff, A., K., Terada. (2014) The halogen signature of young phosphates in the Ksar Ghilane 002 Martian rock. 77th Annual Meteoritical Society Meeting, #5215.

 

Ward D., Roszjar J., Bischoff A., John T., Whitehouse M.J., Mezger K. (2013) Accessory Ca-phosphates: major hosts for halogens and REE in meteorites. Joint meeting Paneth Kolloquium and DFG SPP 1385 “The first 10 million years of the Solar System”, 21-23 October, Nördlingen, Germany, #71.

 

Roszjar J., Whitehouse M.J., Mezger K., Bischoff A., Srinivasan G. (2013) Hf-W ages and REE systematics of eucrite zircon. Joint meeting Paneth Kolloquium and DFG SPP 1385 “The first 10 million years of the Solar System”, 21-23 October, Nördlingen, Germany, #69.
 

Roszjar J., John T., Whitehouse, M., Bischoff A., Layne G. (2013) Halogens in the Early Solar System Inferred from Meteoritic Phosphates, Goldschmidt conference, held in Florence, Italy, August 2013, #5885.

 

Roszjar J., Whitehouse M., Srinivasan G., Mezger K., Bischoff A. (2012) Evidence for prolonged magmatism on Vesta inferred from eucrite zircon grains. Meteoritics and Planetary Science 47:A332.

 

Cartwright J. A., Ott U., Roszjar J., Barrat J. A., Bischoff A. (2012) Noble Gases and CRE ages of eucrites NWA 5073, NWA 2550 and HaH 286. Meteoritics and Planetary Science 47:A95.

 

Roszjar J., Srinivasan G., Whitehouse M., Bischoff A., Mezger K. (2012) Hf-W analyses of eucrite zircon: New crystallization timescales for the eucrite parent body. 43rd Lunar and Planetary Science Conference, Houston, USA, held March 23-27, 2009, #1774.

 

Roszjar J., Bischoff A., Llorca J., Pack A. (2012) Ksar Ghilane 002 (KG002) - A new shergottite: Discovery, Mineralogy, Chemistry and Oxygen Isotopes. 43rd Lunar and Planetary Science Conference, Houston, USA, held March 19-23, 2012, #1780.

 

Roszjar J., Bischoff A., Mezger K., Scherer E. E., Whitehouse M., Srinivasan G., Geisler T. (2011) Constraints on the early evolution of meteorite parent bodies by the analyses of zircon, baddeleyite, and phosphate grains. 2nd DFG Special Priority Program 1385 meeting, 17-19 October, Mainz, Germany.

 

Roszjar J., Scherer E. E., Mezger K., Bischoff A. (2011) Solar System initial 176Hf/177Hf inferred from the eucrite Northwest Africa 5073. Meteoritics and Planetary Science 46:A200.

 

Leschner L., Roszjar J., John T., Bischoff A. (2011) Phosphates in Ordinary Chondrites. Meteoritics and Planetary Science 46:A137.

 

Roszjar J., John T., Whitehouse, M., Layne G., Bischoff A. (2011) Halogen composition of the early Solar System inferred from meteoritic apatites. Mineralogical Magazine 75 (3):1759.

 

Roszjar J., Bischoff A., Mezger, K., Srinivasan, G., Whitehouse, M., Scherer, E. E., Geisler, T., (2010) Early evolution of meteorite parent bodies: Chemical and isotopic constraints on meteoritic zircon, baddeleyite, and phosphate grains. Paneth Kolloquium, 27-31 October, Nördlingen, Germany.

 

Roszjar J., Bischoff A., Scherer E. E., Metzler K. (2010) Northwest Africa (NWA) 5073: The coarsest-grained eucrite and its complex postcrystallization history. 88th Annual Meeting of the German Mineralogical Society, 19-22 September, Münster, Germany, DMG-Meetings abstracts, p. 75.

 

Roszjar J., Scherer E. E. (2010) Lu-Hf systematics of the NWA 5073 eucrite reflect a complex thermal history. Meteoritics and Planetary Science 45:A175.

 

Roszjar J., Geisler T., Bischoff A. (2010) Constraints on the thermal evolution of meteorites applying Raman spectroscopic and electron microprobe analyses on zircon grains. Meteoritics and Planetary Science 45:A174.

 

Roszjar J., Metzler K., Bischoff A., Greenwood R. C., Franchi I. A. (2009a) Northwest Africa (NWA) 5073 - An eucritic basalt with cm-sized pyroxenes. Meteoritics and Planetary Science 44:5203.

 

Roszjar J., Geisler T., Scherer E. E., Bischoff A. (2009b) The thermal history of zircon from the NWA 5073 eucrite as revealed by Raman spectroscopy. Meteoritics and Planetary Science 44:5202.

 

Vogel N., Baur H., Bischoff A., Leya I., Roszjar J., Wieler R. (2009) 81Kr-Kr dating to detect pre-irradiation effects in CAIs: Feasibility and first results. Meteoritics and Planetary Science 44:A212.

 

Roszjar J., Srinivasan G., Bischoff A., Mezger K., Whitehouse M. (2009) Hf-W ages of zircons - new constraints on the evolution of the eucrite parent body. 40th Lunar and Planetary Science Conference, 23-27 March , Houston, USA, #1655.

 

Wurm G., Haack H., Teiser J., Bischoff A., Roszjar J. (2008) Chondrules, CAIs and Dust in Protoplanetary Disks in the Framework of Photophoretic Forces. Meteoritics and Planetary Science 43:A169.

 

Teiser J., Wurm G., Haack H., Bischoff A., Roszjar J. (2008) Chondrules and Photophoresis - Old Friends Meet Again. Meteoritics and Planetary Science 43:A152.

 

Roszjar J., Bischoff A., Scherer E. E., and Mezger K. (2008) Zirconium-bearing phases in meteorites. Paneth Kolloquium, 30-31 October, Nördlingen, Germany, #49.

 

 

  • Chronology and mineralogical evolution in the early Solar System
  • Genesis and evolution of differentiated meteorites
  • Geology of planetary bodies
  • Accessory phases in undifferentiated and differentiated meteorite types
  • New meteorite discoveries
  • In-situ analytical techniques (SEM, EPMA, La-ICP-MS, SIMS, Raman)

Professional Affiliations

  • Member of the European Association of Geochemistry (EGA) (since 2013)
  • Member of the Meteoritical Society (since 2009)

 

Refereeing work

  • Meteoritics & Planetary Science
  • Chemie der Erde - Geochemistry

 

Contribution lecture

  • Introduction to meteoritics and astromineralogy (M.Sc. seminar, bilingual), co-lecturers: DDr. T. Posch, Dr. O. Dionatos, WiSe 2014/2015, Department of Astrophysics, University of Vienna