Discover and read the best of Twitter Threads about #tectonics
Most recents (4)
The #SouthSandwichIslands are a wonderful example of #platetectonics in miniature. The #SouthAmericanPlate is subducting west at ~7 cm/yr below the #SandwichPlate; this #subductionzone hosted a Mw7.5 #earthquake yesterday (Aug 12). 1/4
#tectoplot
#tectoplot
The depth of the #earthquake is still poorly constrained. GFZ puts it shallow, above the plate interface, dip 11°. USGS puts it deeper, within the slab, dip 26° and non-double-couple. Historical events of this scale in the region are old so not much help - 1929, 1933, 1964. 2/4
Given the curvature of the #subductionzone, it would certainly be reasonable to have some intra-slab deformation, and fracturing could be complex, leading to non-double-couple. The closest large event (1964) was apparently quite deep (125 km). 3/4
Daily Bookmarks to GAVNet 06/23/2021 greeneracresvaluenetwork.wordpress.com/2021/06/23/dai…
Community-level evidence for SARS-CoV-2 vaccine protection of unvaccinated individuals
nature.com/articles/s4159…
#COVID19 #VaccinationRate #transmissibility #protection #unvaccinated
nature.com/articles/s4159…
#COVID19 #VaccinationRate #transmissibility #protection #unvaccinated
New research into the spreading of infections reveals need for greater collaboration between biology and physics
phys.org/news/2021-06-i…
#biology #physics #research #infections #spreading #collaboration
phys.org/news/2021-06-i…
#biology #physics #research #infections #spreading #collaboration
Want to know why some mountain ranges have steep fronts whilst others have gentle gradients? Check out my new paper with @AlexCopley_ in @AGU_GCubed. Summary below (1/5)
#tectonics #research #mountains #rheology
agupubs.onlinelibrary.wiley.com/doi/10.1029/20…
#tectonics #research #mountains #rheology
agupubs.onlinelibrary.wiley.com/doi/10.1029/20…
We combined results from oxygen isotope palaeoaltimetry in south east Tibet with numerical models to investigate the effect of lateral contrasts in the strength of the lower crust on the development of mountain ranges.
Key findings:
1. Lateral variations in lower crustal strength provide a first-order control on the shape and temporal evolution of mountain ranges
2. Strong lower crust in the Sichuan Basin can explain the development of topography in the Longmen Shan without #channelflow
1. Lateral variations in lower crustal strength provide a first-order control on the shape and temporal evolution of mountain ranges
2. Strong lower crust in the Sichuan Basin can explain the development of topography in the Longmen Shan without #channelflow
#Inktober index card 1: Relative dating is a snippet of simple magic. As soon as you stop to think logically, entire landscapes unravel in eagerness to tell you their story. #sciart #geology #teaching
#Inktober index card 2: #DonnaStrickland is the 3rd woman to EVER win the #NobelPrize in #Physics for her work on chirped pulse amplification, an engineering #optics technique to create short, intense laser bursts with broad industrial & medical applications. #sciart #cansci
#Inktober index card 3: I’m #TeamIce for #MinCup2018, infatuated with this simple & elegant mineral.
Here’s my interpretation of ice from chemical composition to melt molecules to crystal hexagons. I couldn’t find my blue pens for sketching the #thinsection. Shush.
Vote ice!
Here’s my interpretation of ice from chemical composition to melt molecules to crystal hexagons. I couldn’t find my blue pens for sketching the #thinsection. Shush.
Vote ice!
