Assistant Professor of Geology at Sac State, he/him, opinions my own Bluesky: @erikharold.bsky.social
Clarksville, TN
Joined December 2009
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NEW! 3rd Edition Physical Geology Lecture Tutorials!
erikharoldson.com/pglt3/
-Now with important terms for students to define
#geoscience #geology #OER
Please RT
Erik Haroldson retweeted
It’s a coal mine. What grade, tonnage and recover of rare earths are you expecting, @ENERGY? Perhaps quantify this rather than just stating nothing at all.
Erik Haroldson retweeted
*Geology PhD alert!* I'm looking for a curious, enthusiastic student to work on critical metals in remobilized sulphides, at the University of British Columbia - Okanagan campus in Canada. Please apply by 1 Dec. More info here: tk.cawood.za.net/prospective…
Erik Haroldson retweeted
I knew there were a lot of fake accounts on this platform, but they are usually obvious. I had no idea how intricate and complex the ruse could be.
Get a load of this story.
1/
Erik Haroldson retweeted
Agreed! That's why I wrote ggpubfigs, a ggplot2 extension that *only colorblind-friendly color palettes.
Easily make your figures colorblind-friendly with ggpubfigs! xitter.cf/NKWhiteman/status/1852…
Erik Haroldson retweeted
An effective way to demo polarized light in the petrographic microscope
@UTK_EEPS
#Mineralogy
Fluid Inclusion folks (I know this will get a lot of hits). I've only worked with Linkam stages, but always intrigued by the USGS gas-flow. Alas, at my new gig I have funds but for only one of them. Which way should I go? #geotwitter
ALT Linkam heating/freezing stage
ALT USGS gas-flow stage
Erik Haroldson retweeted
A few minutes ago, Unit 4 turbo-generator at Ratcliffe-on-Soar power station desynced from the GB grid system, marking the END of electricity generation from COAL after 142 years 🇬🇧🙏🏻 @RobBurnett92 and I present a 🪡🧵on the evolution of coal fired power from 1882 to today 1/n
Erik Haroldson retweeted
Massive debris flow traveling at lightning speed in eastern TN! The preceding drought conditions followed by days of rain ahead of Hurricane Helene set the stage. This is incredibly rapid for a debris flow.
Erik Haroldson retweeted
Come and be my colleague! The Department of Earth and Planetary Sciences at the University of California, Riverside is seeking applicants for a tenure-track Assistant Professor in Economic Geology, broadly defined. Deadline: January 6th, 2025!
aprecruit.ucr.edu/JPF01981
Erik Haroldson retweeted
Honky Chonk Beardonkadonk...
Fat Bear Week is coming! 🐻 Yes, you heard correctly—#FatBearWeek, a time when we collectively celebrate the corpulent charms of our Ursidae friends, kicks off October 2-8.
ALT An adult bear and past contender for the Fat Bear Week crown, sitting in water fishing for salmon.
Excited to be at @geosociety 2024 in Anaheim, CA. A 'lot' of critical metals/economic geology stuff lined up this year.
Really proud of Tanner Sigears work through the NSF-IRES funded program at @APSUCoSTEM. Excellent poster presentation of his investigations of slag glass from central Tennessee.
Erik Haroldson retweeted
I was thinking about all the ways to describe the types of scientific papers out there. For example, there's the Tug of War paper, where the paper is framed as a tense debate with two strongly opposing sides. You come in and side with one side and become a hero for breaking the tension. Nature loves these types of papers.
Erik Haroldson retweeted
It’s been a terribly exciting 1st Round of #MinCup24 - brackets have been ruined, trash has been talked, organic minerals have been learned about & more!!
ALT The Wichita State University Geology Dept’s Mineral Cup Bracket
Erik Haroldson retweeted
We are saddened to hear the news about the passing of Prof Jack Zussman who only recently reached his 100th birthday. Prof. Zussman is best know for his contribution to Crystallography and as author of 'An Introduction to the Rock-Forming Minerals'
Erik Haroldson retweeted
Very proud of @sydneyunigeo PhD student, Chris Alfonso, who just published his 1st paper in GSA Bulletin! 👏 This project used spatio-temporal data mining (powered by #pyGPlates + #gplately) and machine learning to help find new porphyry copper deposits.
doi.org/10.1130/B37614.1
Erik Haroldson retweeted
NEW: Gold is found as big nuggets in quartz veins—and we have never known why.
Now we have a shocking answer: electricity, made by earthquakes shaking quartz, is gathering particles of gold and growing them into shiny nuggets.
Earth is wild.
Me @NatGeo nationalgeographic.com/scien…
