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Published May 14, 2026
They say it's hot, dense, silicate rocks, mainly peridotite. The mantle hasn't been studied directly; nothing has ever drilled so deep. There are a lot of very educated guesses when it comes to the mantle.
A mantle is also a loose clock or shawl, worn especially by a woman. It's any covering: a bird's back, especially one of a distinct colour, like that of the superb fairy-wren. It's an outer layer of tissue, especially in molluscs, the bit that secretes the substance that makes a shell.
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What we are leaving in the strata now is a sort of forever poison. This is the plastics layer. Strange to think of the journey of this layer over millions of years, The plastics holding no essence of once being a plant, of once being flesh. Of lying for so long as part of the earth. The extraction, this last transformation, and then the reburying, the leeching of all those bags, containers, the toothbrush handles. A water bottle finally settles on the bottom of the sea and is covered in molluscs with their orange tongues, then a layer of mud, and then what? Black mud is lifeless, the dead things that fall aren't consumed by predators. The dead things can rest undisturbed, layered in peace, silence, death. This is the environment for perfect preservation. (p.43)