Showing posts with label eruption. Show all posts
Showing posts with label eruption. Show all posts

Monday, May 25, 2015

Pompeii . . .


 


(from http://decodedpast.com/human-remains-pompeii-body-casts/7532)
". . . The eruption of Vesuvius began at around lunchtime, arguably on the 24th August 79AD. In the early hours of the following morning, the eruption reached its fatal, concluding stages. Three pyroclastic surges- a mix of hot gases and ashes from the collapsing eruption column- traveling at 100kph finally reached Pompeii. The first surge just skimmed the city walls but the final one overwhelmed the whole city, finishing off anyone still alive. But the surges also preserved. For its rain of fine ash fell over Pompeii, covering the city until only the remains of its tallest buildings were visible above the debris. Buried within the ash fall were the inhabitants of the town. A shell of pumice that allowed them to slowly decay in the usual way covered those who perished in the early stages of the eruption. But the bodies of victims of the pyroclastic surges had a different fate. For the fine ash fall encased their bodies, hardening to form a porous shell. As the soft tissues of the bodies decayed, they leached away through this later. But by then, the hardened ash had captured and preserved their final postures at the moment of death. . .

. . . Wax was injected into the void around the victim’s skeleton, left to harden, and then coated in plaster. Once the ‘plaster cast’ had set, the wax was melted out and replaced with liquid epoxy resin- to produce a durable, transparent cast, which allowed the victim’s jewelry and hairpin to be viewed in situ on the body. . ."







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