FOR SALE - Tasmanian Petrified Fern - 4 Pieces Smallest 6cm x 4.5cm, The Largest 8cm x 4cm all 6mm thick - $70 delivered Just south of the Lune River in south-west Tasmania, in sediments underlying Jurassic basalt, lie the petrified remains of man-fern-like plants - from the Osmundacaulis genus. These fossils are about 180 million years old. Once upon a time, the area was covered in large trees and ferns - much like most of the region still is today - but it was buried in the ash and lava from a volcanic eruption. The buried trees and ferns were infiltrated by volcanic-heated, silica-rich ground waters that replaced the plants cell by cell, preserving most of their fine structures.
Posted on: Thu, 08 Jan 2015 07:42:39 +0000
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