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Gavin Tolometti

The Melts of West Clearwater and Mistastin Impact Structure


Hey everyone, not much to report for this blog unfortunately. Most of the things I have been up to have involved a lot of meetings with TA duties, PHASR, the CPSX High-Altitude Balloon project, and GradCast.

What I can share with you all today are the impactite (hyper velocity generated products) samples from West Clearwater lake impact structure and Mistastin lake impact structure. I have only briefly looked over them under the microscope so further work is needed to be completed before I spend some time on the electron micro-probe.

The images show one thin section from a fine-grained melt rock, medium-grained melt rock, and an impact melt-bearing breccia. I have shown the samples under plane polarized light and crossed polarized light.

West Clearwater

Fine Grained Melt Rock Samples

Medium Grained Melt Rock Samples

Impact Melt-Bearing Breccia Samples

Mistastin

I managed to go over some of the Mistastin samples already cut for thin sections by previous graduate students. I only looked over the samples labelled as melt, clast-rich and poor melt rocks, and "suevites" (more appropriate term is impact melt-bearing breccia).

Here are a few thin section images.

Melt

Clast-rich Melt Rocks

Clast-poor Melt Rocks

Impact Melt-Bearing Breccia

Sadly that is all to say and show at the moment. I will be back next time to talk more about my research!

On a side note, last Tuesday I was interviewed by GradCast to talk about CPSX and my PhD research. If you would like to listen to the episode click on the link below.

https://gradcastradio.podbean.com/e/episode-184-billie-jean-is-not-my-lava/

If you would like to talk about your research or any projects you have worked on during the summer then I highly recommend coming on the show, it is a lot of fun! Plus I am a new committee member so I can get you a spot for the winter term 2019.

See you all next time!


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