Geological Science and Engineering

Geological Sciences and Geological Engineering
Geological Sciences and Geological Engineering

Geological Sciences and Geological Engineering Distinguished Speaker Program presents Dr. Brendt C. Hyde

On Thursday, May 6th, Dr. Brendt C. Hyde, William E. White Post-Doctoral Fellow, Queen's University Department of Geological Sciences and Geological Engineering, will be giving a talk for the Department of Geological Sciences and Geological Engineering.

Dr. Hyde will be presenting on: "Meteorites and the Evolving View of How Planets are Built"

Date: Thursday, May 6, 2021

Time: 12:30 pm EST

Zoom link:  Email dumondl@queensu.ca for the Zoom link

Please join us. All are welcome to attend!

Abstract: Meteorites provide snapshots of our solar system’s formation and evolution through time. Key processes in the transition from the presolar disk to planets include melting and collision. These processes are important because they ultimately led to the formation of the Earth and other planets and the outgassing of volatiles to their surfaces. In this talk, I will discuss some of the earliest melting processes which initiated on asteroids, as represented in meteorites. Phosphate U-Pb thermochronology paired with stable isotope analysis of the asteroidal meteorites Northwest Africa (NWA) 6962 and NWA 7680 has provided evidence for some of the earliest (> 4.5 billion years ago) asteroidal magmas in the outer solar system. These meteorites have not been heated above 350-550 °C since their crystallization proving they are a true representation of these early formed melts. Research involving the regolith breccia meteorite NWA 869 has provided a unique example of impacting and mixing of two distinct asteroidal components on the surface of an asteroid. Information about the melt mixing occurring during impact processes is vital to our understanding about how distinct objects accrete, grow and evolve over time. Meteorite research continues to deepen our understanding of the processes that ultimately build planets; a crucial step in understanding our own origins.