Special topic presentation: An U-Pb geochronological study of ungrouped differentiated achondrite NWA4587

Date & time

12.30–1.30am 7 June 2017

Location

Green Room (J5)

Speakers

Elin Rydeblad

Contacts

 Joelle Ducommun

Since the 1970s, scientists have been using the U-Pb-Th isotopic systems to study extra-terrestrial materials and unravel the mysteries of our solar system.

The study of meteorites can help us answer several questions that are still under debate regarding the early solar system and the processes therein. It could help us unify a timescale for the development of the solar system, help us fully understand how our planets formed, and tell us about the nature of elemental dispersal throughout the early solar system; as well as giving us an invaluable tool in the search for other habitable planets and possible life, and future celestial exploration. (White, 2011).

This project reports high precision absolute Pb-Pb ages obtained through isotopic leaching and mass spectrometry analysis. All sample processing was performed at the Sensitive and Precise Isotopic Dating of Earth’s and Extraterrestrial Rocks (SPIDE2R) laboratory facilities, located at the Research School of Earth Sciences (RSES) at the Australian National University (ANU).

By analysing the long- and short-lived radionuclide ratios of NWA4587, we were able to determine the absolute age of this achondrite. These ages will allow us to gain additional insight in to the initial state of the early solar system, and the process of planetary formation (Amelin and Ireland, 2011).

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