Friday Rocks 2: Tufa Towers

The Tufa towers at Mono Lake, California were exposed due to water in the Mono Basin being diverted to provide water for Las Angeles, causing an inbalance in precipitation and evaporation of lake water, dropping the water level. The hyper-saline, supersaturated waters of Mono Lake have a high pH and precipitated the carbonate towers. The flat bottoms of the different tufa layers record levels of prolonged precipitation.


Friday Rocks 1

Lately I’ve been posting some photos from my research trips to Instagram and I thought why not repost them here in better quality. Every Friday I’ll post a new photo of a rock landscape with some description and light interpretation. Enough talk, let’s see the rocks.

Lens cap is 72 mm

Here is a piece of laminated “gritty dolomite” in float from Naukluft-Zebra Park, Namibia. Gritty dolomite is a fault core rock that deformed via granular flow during coseismic slip. Laminae resemble flow bands. Here a small fault has offset this rock with apparent left-lateral motion. You can see small drag folds in the finer laminae on the left side of the photo, a feature which is noticeably absent from the courser laminae. This demonstrates a rheological difference between course and fine laminae where fine bands are relatively softer compared to the course bands. The course grains are composed of neocrystallized dolomite, magnetite, and quartz.

Click here to see the picture on Instagram

Have an instagram? Follow me here. You’ll get a preview of the rocks, more field photos, plus more random photos I take.

Want more Friday rock pictures? Check out Callan Bentley’s Friday Fold series.

Currently Solicitating Content Suggestions for a LaTeX Seminar

LaTeX (pronounced Lay-Tek) is a powerful document preparation language developed by and for scientists for writing manuscripts, journal articles, and even presentations. I’ve blogged about various aspects before here and  here on Upsection.

My advisor and I are currently organizing an Intro to LaTeX seminar for grads and u-grads here at McGill. Content we’re planning on covering includes:

  • Getting started with LaTeX (selecting and installing TeX software) 
  • General journal formatting, templates, dictionaries, and style files 
  • Figures and captions 
  • Tables 
  • Equations and special characters 
  • Building your reference library 
  • Resources, help, and cheatsheets 
  • Adapting your manuscript to McGill’s LaTeX thesis template (something I’ll be doing soon and I’m sure other MSc and PhD students will be interested in).

Are there any topics we’re missing? The purpose of the seminar is not to be all-encompassing, but to provide enough direction and resources to get students started with using LaTeX.

So what helped you when you started using LaTeX? Any tips or advice we should share with our students? Let us know in the comments!