PhD - Geosciences - Idaho State University
M.S. - Geology - East Carolina University
B.S. - Geology & Earth and Space Science Ed - Southern Utah University
Certificates/Licenses:
Secondary Education License in Earth & Space Science Education
Community College Instruction - Graduate Certificate - East Carolina University
Contact: tessjohnson@isu.edu
LinkedIn: https://www.linkedin.com/in/tess-oldroyd-johnson/
Website: https://sites.google.com/view/tess-oldroyd-johnson/contact
Instagram: @RockTalksWithTess
My long-term goal is to become a college professor, where I can combine research, teaching, and mentorship. I hope to teach at a college or university with a strong geology program located in a geologically diverse region, where field experiences can be central to learning. I am passionate about connecting classroom concepts to the outdoors, mentoring students in research, and expanding inclusion within the geosciences.
I have a range of research and teaching skills I've learned through my work in volcanology and igneous petrology. My background includes hands-on experience with analytical tools such as SEM, electron microprobe, EBSD, XRD, and spectroscopy, as well as petrographic and image-based techniques including thin section microscopy, ImageJ, and crystal size distribution analysis. I also use R for statistical analysis and data visualization, and have strong field skills in mapping, sampling, and leading field-based learning. Through my teaching experience, I have developed curriculum and taught at the high school and university levels, presented research at professional conferences, and mentored students through research and outreach activities.
My research interests are physical volcanic processes and the connection between volcanic and plutonic systems. I am interested in eruption dynamics, magma plumbing system evolution, and igneous petrology, and crystallography and conditions of crystallization. I also am interested in eruption environments, including lava–water interactions, to better understand how these processes shape both terrestrial and planetary systems.
My current project focuses on investigating the spectral signatures of volcanic deposits at Mud Lake, Idaho, to better understand lava-water interactions. Using a TerraSpec Halo NIR spectrometer, I am analyzing different rock types (including spatter, lacustrine deposits, and lithic clasts) to identify mineralogical changes and establish spectral “end members.” These data will be compared with physical features and mineral analyses (XRD, microscopy, SEM) to improve our ability to recognize similar environments on Earth and Mars, with implications for understanding habitability on other planets.
For 12/10:
Work on manuscript (writing and revisions)
Try again on XRD
Read/summarize Rogers (2025)
LPSC abstract
pick figures from manuscript
review requirements/format
Implement daily writing plan
For 12/3:
Send draft to SKN
{SKN give feedback by end of semester}
Read/summarize:
Paladino dissertation
Rogers (2025)
Hold: LPSC abstract
Try again on XRD
For 11/19:
Manuscript
work on text
bring draft next week
Read/summarize:
Paladino dissertation
Rogers (2025)
Leight (2024)
Compile info for meeting with GeoClub 11/14
Hold: LPSC abstract
Try running XRD
For 11/12:
Manuscript
work on text
bring draft next week
Read/summarize:
Paladino dissertation
Rogers (2025)
Leight (2024)
GSA undergrad support program
Pick name
rough draft of calendar
aiming to present to GeoClub 11/14
Start thinking about LPSC abstract
For 11/5:
Slow burn: GSA undergrad support program
Jump back into manuscript
expand on interpretations
read/review results section (flag areas for revision)
Read/summarize:
Paladino dissertation
For 10/15:
GSA poster!
Meet with ER on Friday
Rehearsal on 10/15
Volc midterm
Secondary focus on manuscript
Only after GSA poster finalized: Orientation reading (write short synopsis of each):
SKN proposal
Paladino dissertation
For 10/8:
Focus on GSA poster
Secondary focus on manuscript
Only after GSA poster finalized: Orientation reading (write short synopsis of each):
SKN proposal
Paladino dissertation
Questions I have for this week- do you know how to look at .emsa and .esi files (EDS maps)? I'll also ask kendra.
Next week- can we practice my gsa poster?
For 10/1:
<lol coursework! grading! haha!>
Work on edits to draft
data processing (spectral) focus on Thursday
present data to SKN at next meeting
GSA poster: first draft to ER by 10/2
Orientation reading (write short synopsis of each):
SKN proposal
Paladino dissertation
For 9/24:
Work on edits to draft
data processing (spectral)
GSA poster: first draft to ER by 9/26
Orientation reading (write short synopsis of each):
SKN proposal
Paladino dissertation
For 9/17:
Want to look into volunteering with "Geo Girls" next summer
For 9/10:
Draft to ER
Work on GSA poster (starts Oct 19) (use poster as well for iLife, depending on flight options?)
Orientation reading (write short synopsis of each, including questions):
Kyleigh's draft
Dali's draft
SKN proposal
{included Paladino dissertation, expect to not finish this week}
Add stuff to website
For 9/4:
Nothing. Enjoy Seminar trip!