Fossil Colonial Coral, Carboniferous Limestone, The Burren, County Clare, Ireland,

Hoodoo filled cliffs on the north side of Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America

Snow-covered volcanic landscape with volcanic sand and petrified lava, crater of Askja volcano, Icelandic highlands, Iceland, Europe

Fossilized plants, Tasset, Algeria, Africa

Fossilized ray-finned fish (Lepidotes maximus), Museum fuer Naturkunde, Natural History Museum, Berlin, Germany, Europe

Ammonite fossil, beach, Nash Point, Glamorgan Heritage Coast, South Wales, Wales, United Kingdom, Europe

Sand dunes turned into rock, sandstone formations, Coyote Buttes North, Paria Canyon-Vermilion Cliffs Wilderness, Page, Arizona, USA

Fossils of a fern, 35-40 million years, on Longyearbreen Glacier, Longyeardalen, Adventfjorden, Spitsbergen, Svalbard, Norway, Scandinavia, Europe

Museum of Natural History, Maria Theresienplatz square, 1st district, Vienna, Austria, Europe

The Wave, Vermillion Cliffs, Utah, USA, America

Petrified sand dunes, Coyote Buttes, Arizona, USA

Stromatolites, Earth's oldest fossils, Hamelinbay, Northwest Australia

Jasper

Stromatolites, Earth's oldest fossils, Hamelinbay, Northwest Australia

Petrified tree, runoff area of the Grand Prismatic Spring, Midway Geyser Basin, colored thermophilic bacteria, microorganisms, hot springs, Yellowstone National Park, Wyoming, United States of America, USA

Azurite-Malachite

Fossilized plants, Tasset, Algeria, Africa