After years of picking up #sand samples, I've finally gotten around to bottling them. IMHO they look fantastic; colours from white to black, yellow to orange and even green (olivene sand from the Isle of Skye) and purple (garnet sand from Easter Ross). My favourite is bimodal desert sand from Abu Dhabi, v well rounded grains associated with VF/F well sorted grains.
Check out your local beach, esp the very back where interesting deposits often occur.
Just FYI, SedsOnline has a call for presenters on evaporites (and other chemical deposits). If you're studying the topic and would like to get a good exposure in the international sedimentological community, this is a good venue.
Their form is here: https://forms.gle/LZ2tXGvxf1fQrk1e9
My SedsOnline talk is now available on YouTube, if you feel like hearing what I have to say about the fundamental concepts of facies in carbonate #sedimentology, and how we need to rethink them.
Laterite (Pedology 🟤)
Laterite is a soil type rich in iron and aluminum that often forms in hot, wet areas; most such soil is found in the tropics. Nearly all laterites are of rusty-red coloration due to high iron oxide content. Laterite soils develop by intensive and prolonged weathering of the underlying parent rock, usually under conditions of high temperatures and heavy rainfall...
https://en.wikipedia.org/wiki/Laterite
#Laterite #Pedology #Regolith #Weathering #OreDeposits #Sedimentology
Bob Downie
Scientific Frontline
Dr. Or M. Bialik
💧🌏 Greg Cocks
Planetary Ecologist