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In geology, petrifaction or petrification (from Ancient Greek πέτρα (pétra) 'rock, stone') is the process by which organic material becomes a fossil through the replacement of the original material and the filling of the original pore spaces with minerals.
Notable Examples of Petrified Fossils. Petrified fossils range from fragmented wood and bone to remarkably complete organisms captured in astounding detail. Here are some of the most impressive petrified specimens ever discovered: Petrified Forests. Immense stone trees are the most iconic petrified remains.
7 cze 2019 · Petrified wood is a familiar example of fossilization—pieces of tree trunks turn into super-hard rocks, but still retain growth rings and even cell structures of the once-living tree. How does...
Even though dinosaurs lived millions of years ago, we know about them thanks to fossils. Watch our animation to find out how fossils form and why dinosaur fossils are rare compared to fossils of marine animals.
8 lip 2024 · A petrified fossil is a type of fossil that has undergone petrification, a process that turns organic material into stone or a stone-like substance. How does petrification occur? Petrification occurs when organic matter decays and is gradually replaced by minerals, often carried by groundwater.
16 mar 2018 · Combined with the data provided by the surrounding rocks, fossils tell the stories of ancient ecosystems. Petrified Forest has plant and animal fossils from the Triassic Period, going back over 200 million years.
Summary: Petrified fossils result from permineralization, the replacement of once-living matter by minerals. Solutions containing silicates, carbonates, iron or other minerals seep into the gaps and spaces between the cells, first encasing the cells and eventually replacing the cells themselves.
