The authorSimon Wellings
- A deeper look at the geology of diamonds
- Some facets of the Geology of Diamonds
- A harder look at the geology of diamonds
- Structural Geology by the Deformation numbers
- Cornwall: tin, pasties and the world
- The Grampian / Taconic orogeny in Ireland – when arcs attack
- Scandinavian crust now in Alaska!
- When continents rotate
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- On A deeper look at the geology of diamonds:
- Chris: Hi Simon thank you for your fast reply, maybe the point is that you mean here “This portion of... (5 days 2 hours ago)
- Metageologist: Hi Chris, Maybe I could have phrased things better. The subducting slab is recent (100Ma) so... (5 days 4 hours ago)
- Chris: At first nice article but I think there are 2 inaccuracies in your article: 1. “The ultrabasic... (5 days 6 hours ago)
- Metageologist: I’ve replied on the Sci Am site, but some more thoughts here. The arguments for a... (12 days 19 hours ago)
- Torbjörn Larsson, OM: Ah, I meant to say that anoxygenic photosynthesis was consistent with the Isua finds. I... (12 days 21 hours ago)
- Torbjörn Larsson, OM: For some reason I had managed to notice most of the sulfur works, but not the diamond... (12 days 21 hours ago)
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Based on a work at all-geo.org.
Category Archives: mountains
In areas of active mountain-building the middle crust can get hot and weak, like a soft jam/jelly filling in a sandwich. These squishy rocks are hidden from us by the cold rigid upper crust, so we wouldn’t expect to see … Continue reading
Time for a post with an emphasis on photos. There’s more context here, but let’s get on with admiring the view. That’s me, standing in front of chorten (Tibetan Buddhist religious structure). The rather pretty cliffs are Tethyan sediments, now … Continue reading
How do mountains form? It’s just thrusts, right? Compression causes thrust faulting which piles up layers and layers of rock. This causes Barrovian metamorphism and makes mountains. Simple, no? No. Thrusting is important, of course, but as always real rocks are … Continue reading