Lauren Harrison

PhD Geological Sciences

EOS-Main 305
(604) 822-3764
graduate

My current research is on the radiogenic isotopic signature and petrology of Northwestern Hawaiian Ridge lavas. The Northwestern Hawaiian Ridge is the ~2800 kilometer long track of seamounts, small islands, and atolls erupted from the Hawaiian mantle plume between the Hawaiian Islands and the bend in the Hawaiian-Emperor hotspot track spanning roughly 40 million years. The use of high precision isotopes such as Pb, Hf, Nd, and Sr as well as trace elements allows us to explore the geochemical evolution of the Hawaiian mantle plume over a significant period of its activity when major changes took place in magmatic flux, Pacific Plate orientation and motion, and volcanic propagation rate.

My previous research is on the petrology and mantle geochemistry of Hawaiian lavas, specifically the lithium isotopic signatures of lavas spanning the entire Hawaiian island chain. Li isotopes offer the possibility of a different perspective on the origin of mantle sources to Hawaiian volcanism because it is a stable isotope fractionated in specific geologic environments (i.e. low temperature, aqueous system such as subduction zones). Tracing this "signature" in oceanic island basalts such as Hawaii provides insight about the recycling of crustal materials into the mantle. 

Analytical Experience

- Clean lab preparation of samples, MC-ICP-MS analysis of Pb-Hf-Nd-Li, HR-ICP-MS analysis of trace elements, TIMS analysis of Sr, data processing and quality control (Pacific Center for Isotopic and Geochemical Research, UBC). 

- Preparation of pressed pellet and fused glass bead samples for XRF major element analysis, XRF analysis of major elements, U-Pb TIMS dating of zircon, mineral separation for U-Pb zircon dating, petrographic microscopy, geological field mapping, and rock slab etching and staining for modal analysis (University of Wyoming). 

- Toxicity testing (LD 50) of Ga, In, and Te to Ceriodaphnia dubia (USGS Science Center, Menlo Park, CA). 

Awards

-2015 Geological Society of America Student Research Grant 

-Dept. of Earth, Ocean and Atmospheric Science €œMost Exciting Research€ award at 2014 graduate student poster competition.

-Scientist on Schmidt Oceanographic Institute's Research Vessel Falkor collecting multibeam, gravity, and magnetic data of Hawaiian Ridge seamounts, 2014.

-UBC Doctoral Four Year Fellowship, 2012-present

-2012 IODP Travel Grant

-UBC International Partial Tuition Scholarship 2011-present

-U. of Wyoming Faculty of Arts & Science's Top 20 Outstanding Graduates Award, 2011

-Three time winner of the EPSCoR Undergraduate Research Fellowship (UW)

-Invited guest speaker at the Wyoming Petroleum Club, 2010 and at the Cheyenne Mineral & Gem Club, 2010

-2008-2009 Recipient of the Cheyenne Mineral & Gem Club Scholarship

-Hathaway Merit Honors Cont. Scholarship and Trustee's Pride Hathaway Scholarships, 2007-2009 (UW)

-Presidential Scholarship, 2006-2007, upgraded to Trustee's Scholarship, 2007-2008 (UW)

-Anne Lowe Memorial Geology Scholarship, 2009, 2010 and S.H. Knight Geology Scholarship, 2010 (UW)