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#geologist

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The white layer is the most interesting part to me. You only see white quartz sand like that on our beaches. We live less than 1/4 mile from the bay (gray sand shores.) That sand must have been brought in by an event (I guess a relatively recent one seeing as how it’s only 6-9” below the surface) that drove sand from the barrier islands across the bay, inland. Extremely powerful storm surge, perhaps?

Would love the opinion of any #geologist who happens to see this.

For the #printerSolstice2425 prompt silicon my #linocut of brilliant trailblazing US #geologist & prof Florence Bascom (1862-1945) who championed women’s education, & used polarizing microscopes for detailed petrographic analysis to show that rocks previously identified as sedimentary were in fact metamorphosed volcanic rocks she called aporhyolite (implying a change in rhyolite, a silica rich igneous rock, as in her 🧵1/n

I have been digging out my old copies of John McPhee's #books, dipping in, remembering what it was like to be a new #geologist, and how it has carried across into #spatial #data, #geomorphology, #geomorphometry, #hydrology, #landcover, #engineeringgeology, #environmentalscience, #landuse, #massmovement and so much more......
This one paragraph reminded me so strongly of that time,, although I cannot of course write as eloquently:
--
"I used to sit in class and listen to the terms come floating down the room like paper airplanes. Geology was called a descriptive science, and with its pitted outwash plains and drowned rivers, its hanging tributaries and starved coastlines, it was nothing if not descriptive. It was a fountain of metaphor—of isostatic adjustments and degraded channels, of angular unconformities and shifting divides, of rootless mountains and bitter lakes..."
#GIS #JohnMcPhee #science #scientificwriting #readingforpleasure #geology #water #landforms #spatialanalysis #spatiotemporal