Robert A Creaser, PhD, FRSC

Professor, Faculty of Science - Earth & Atmospheric Sciences

Contact

Professor, Faculty of Science - Earth & Atmospheric Sciences
Email
robert.creaser@ualberta.ca
Phone
(780) 492-2942
Address
3-18A Earth Sciences Building
11223 Saskatchewan Drive NW
Edmonton AB
T6G 2E3

Overview

About

Canada Research Chair Tier I in Isotope Geochemistry 2009-2023
Fellow Royal Society of Canada 2008
Distinguished Member Geological Association of Canada 2007
Fellow Society of Economic Geologists 2007
McCalla Professor 2003
Past Presidents Medal Geological Association of Canada 1998
University of Alberta Faculty of Science Research Award 1997


Research

Robert Creaser specializes in radiogenic isotope geochemistry using the Re-Os, Rb-Sr, Sm-Nd, Pb-Pb isotope systems. A wide variety of geochemical phenomena and processes, mainly involving the geochemistry, origin and evolution of Earth's crust, are investigated using these isotope systems. Currently, research projects focus on the use of Re-Os isotopes for geochronology, such as: Re-Os geochronology and systematics of organic-rich sediments (black shales), application of Re-Os isotopes for direct dating of hydrothermal sulfide mineralization, Re-Os geochronology of fluid flow in sedimentary basins. Research opportunity:

  • Geochronology of fluid flow in sedimentary basins using Re-Os isotopes.
  • Re-Os geochronology of hydrothermal ore-forming systems using sulfide minerals.

Courses

EAS 110 - Earth Science Field School

This excursion through the mountains and prairies of Alberta introduces students to the diverse geology and geomorphology of the region. The structure of rocks will be observed, fossils identified, and glacial deposits studied, in order to understand the geological processes that have occurred here over geologic time. Requires payment of additional student instructional support fees. Refer to the Fees Payment Guide in the University Regulations and Information for Students section of the Calendar. Intended for students in their first or second year. Not available to students with previous credit in an EAS field school (EAS 234, 354, or 333). Prerequisite: One of EAS 100, 101, 201, 210 or SCI 100. [Faculty of Science]

Winter Term 2021
EAS 539 - Isotope Geology: Radioactive Systems

Theory and systematics of radioactive decay, geochronology and isotopic tracing U-Pb, Rb-Sr, Sm-Nd, Re-Os and other radioisotope systems. Applications of natural radioactive isotope variation to a variety of problems spanning low and high temperature geologic processes. [Faculty of Science]

Fall Term 2020

Publications

Re-Os dating of pyrite confirms an early diagenetic onset and extended duration of mineralization in the Irish Zn-Pb orefield
Author(s): D Hnatyshin, RA Creaser, S Gleeson, JJ Wilkinson
Publication: Geology
Volume: 43
Page Numbers: 143-146
External Link: http://geology.gsapubs.org/content/43/2/143.abstract
Constraints on the genesis of gold mineralization at the Homestake Gold Deposit, Black Hills, South Dakota, from rhenium-osmium sulfide geochronology
Author(s): RM Morelli, CC Bell, RA Creaser, A Simonetti
Publication: Mineralium Deposita
Volume: 45
Page Numbers: 461-480
External Link: http://link.springer.com/article/10.1007/s00126-010-0284-9
Cretaceous Oceanic Anoxic Event 2 triggered by massive magmatic event
Author(s): SC Turgeon, RA Creaser
Publication: Nature
Volume: 454
Page Numbers: 323-326
External Link: http://www.nature.com/nature/journal/v454/n7202/full/nature07076.html
Transient episodes of mild environmental oxygenation and oxidative continental weathering during the late Archean
Author(s): B Kendall, RA Creaser, CT Reinhard, TW Lyons, AD Anbar
Publication: Science Advances
Volume: 1
Issue: 10
Page Numbers: e1500777
External Link: http://advances.sciencemag.org/content/1/10/e1500777
Direct radiometric dating of hydrocarbon deposits using rhenium-osmium isotopes
Author(s): D Selby, RA Creaser
Publication: Science
Volume: 308
Page Numbers: 1293-1295
External Link: http://science.sciencemag.org/content/308/5726/1293