Drew A. Levy, Ph.D.

Structural geology and petrochronology at UT Austin. he/him

[Drew A. Levy, Ph.D. @drewalevy]

Do you like shear zones, microstructures and crustal extension? https://t.co/8DFBNUC4WT

[USGS @USGS]

Big news: USGS scientists & partners have confirmed, with 2 new lines of evidence, that human footprints found in White Sands Nat'l Park show that people lived in North America 21-23,000 yrs ago—much earlier than previously thought!

More here: https://t.co/Fft0s2RRzA

Imgs: NPS

[Drew A. Levy, Ph.D. @drewalevy]

@Wenrongc I’m teaching this next week!

[Drew A. Levy, Ph.D. @drewalevy]

@CailCon Could mistake the beach pictures for Catalina 🤷‍♂️ 😎

[Drew A. Levy, Ph.D. @drewalevy]

@KeepItRheol I’d be curious to see how the fault fabrics compare to those from the Muddy Mountains. Pretty similar lithology. I’m curious what they record 🤔

[Drew A. Levy, Ph.D. @drewalevy]

@KeepItRheol I was just in the northern Snake Range mcc and collected a suite of samples from the detachment fault zone. I’m unaware of any work there that has focused on the fault surface/zone —everyone is distracted by the mylonites.

[Drew A. Levy, Ph.D. @drewalevy]

@GeoNickHayman @KeepItRheol I chatted with Bill Hammond about this a while ago and I guess the indication from GPS is some afterslip following recent norma fault earthquakes in the Walker Lane, but no creep.

[NWS Reno @NWSReno]

Here’s a timelapse of the convective storm initiation from early this afternoon. Showers and thunderstorms will continue through the early evening, so keep an eye on the sky if plans take you outdoors this afternoon! ⛈️

#nvwx

[Drew A. Levy, Ph.D. @drewalevy]

Thought this epidote was worthy for my first post in a while. Happy #ThinSectionThursday
Epidote(s) porphyroclast in a mylonitic orthogneiss. FOV = 2.3 mm.

[Drew A. Levy, Ph.D. @drewalevy]

@wp_burgess I am curious how many landslides occur outside of relative to within populated areas where people report them. Also, curious how bedrock lithology influences this.

[UCLA Alumni @UCLA_Alumni]

#OnThisDay in 1994, the Northridge earthquake jolted the campus awake in the early morning hours and affected some of @UCLA’s most beloved landmarks. Find out more here: https://t.co/Tj44YiMjn3.

[Drew A. Levy, Ph.D. @drewalevy]

@CosyNomad A UV light really elevates the experience

[Drew A. Levy, Ph.D. @drewalevy]

@johneclogite Are these rocks from the Moine Thrust zone?
Any sense of PT conditions of deformation?
I am currently scouting shear zones to study accessory phase deformation and petrochronology. The Moine came up as an option but I don’t know much about it.

[Drew A. Levy, Ph.D. @drewalevy]

I’ve never seen deformed zircon like that from a crystal shear zone. Interested to heard more about it @johneclogite. Curious about the Pb systematics.

[Mariana Webb @MarianaJWebb]

High flows on the #TruckeeRiver at 8:30am this morning in #Reno, Nevada @NWSReno @nevada_water

[Drew A. Levy, Ph.D. @drewalevy]

@glacialeek Mine is frantically dragging figures into PowerPoint then not being able to remember what folder the original files were in when I come back to the PowerPoint later.

[Drew A. Levy, Ph.D. @drewalevy]

@EbeamUt 👍 (37.5311816, -122.3657957)

[Drew A. Levy, Ph.D. @drewalevy]

@EbeamUt San Andreas south of SF plane headed to SoCal?

[Drew A. Levy, Ph.D. @drewalevy]

@GeoNickHayman Nice. It would be fun to chat more. I’ll be at AGU

[Drew A. Levy, Ph.D. @drewalevy]

Do you like shear zones, microstructures and crustal extension? https://t.co/8DFBNUC4WT

[Drew A. Levy, Ph.D. @drewalevy]

@GeoNickHayman There are certainly older fabrics, but they are largely obscured by younger fabrics/structures or annealed. There was likely Late Cretaceous deformation, but due to overprinting it is not well characterized (lots of good P-T-t data though).