The use of in situ U-Pb dating of carbonates in geological studies

Abstract

Carbonate precipitation occurs in various geological environments including marine, lacustrine, or hydrothermal systems. Their precipitation as vein filling, breccia cement and fault coating also accompany tectonic processes. Traditional U-Pb bulk analyses are challenging because such samples are often texturally complex at the sub-millimeter scale, with either slow-continued or multi-phase growth. The in-situ approach allows accurate analysis while avoiding possible mixing or averaging ages of different phases. In my research, I apply in-situ U-Pb dating to various types of carbonate samples including veins, speleothems, cements, oncoids, secondary dolomites, and lake sediments. Absolut ages of these samples complemented with analysis of fluid inclusions, stable isotopes, rare earth elements, and strain analyses contribute greatly to tectonic, paleoclimate, sedimentology, stratigraphy and alteration studies.

Speaker

Dr Nuriel is currently a researcher at the Geological Survey of Israel, leading research on geochemistry and geochronology in the Geochemistry department. She was NSF Postdoctoral Fellow at Stanford University, USA and she did her PhD in Geology at the University of Queensland, School of Earth Sciences. Dr Nuriel did both of her undergraduate and MSc studies at the Ben Gurion University, Dept. of Geological and Environmental Sciences in Israel.

Venue

Room 314, Steele Building (#03), St Lucia Campus