Explore the fascinating world of rocks, minerals, and fossils. From the deepest mines to ancient fossil beds, discover the geological wonders that tell the story of our 4.5 billion-year-old planet.
Rocks are naturally occurring solid aggregates of minerals. They form the Earth's crust and are classified into three main types based on how they form.
Formed from the cooling and solidification of magma or lava. They can be intrusive (plutonic - cooled slowly underground) or extrusive (volcanic - cooled quickly on surface).
Formed by the accumulation and lithification of sediments. They cover about 75% of Earth's land surface and often contain fossils.
Formed when existing rocks are transformed by heat, pressure, or chemically active fluids. Can be foliated (banded) or non-foliated.
| Rock Name | Type | Formation Process | Composition | Uses | Major Locations |
|---|---|---|---|---|---|
| Granite | Igneous | Slow cooling of magma deep underground | Quartz, Feldspar, Mica, Hornblende | Countertops, monuments, construction, paving | Finland, Norway, Sweden, Brazil, India, China, USA (Georgia, Vermont), Spain, Portugal, South Africa, Australia, Egypt, UK (Scotland, Cornwall) |
| Basalt | Igneous | Rapid cooling of lava at surface | Plagioclase, Pyroxene, Olivine | Road construction, building stone, insulation | Iceland, Hawaii (USA), India (Deccan Traps), Ethiopia, Russia (Siberian Traps), Australia, Ireland (Giant's Causeway), USA (Columbia River), Japan, Indonesia, New Zealand |
| Obsidian | Igneous | Very rapid cooling of silica-rich lava | Volcanic glass, 70%+ SiO₂ | Tools, jewelry, surgical blades, ornamental | USA (Oregon, California, Wyoming), Mexico, Japan, Armenia, Turkey, Italy, Iceland, New Zealand, Greece, Kenya, Ethiopia, Guatemala |
| Pumice | Igneous | Explosive volcanic eruption, gas-filled | Volcanic glass with vesicles | Abrasive, lightweight concrete, horticulture | Greece (Santorini), Italy (Lipari), Turkey, USA, Iceland, Japan, New Zealand, Indonesia, Mexico, Guatemala, Chile, Argentina |
| Limestone | Sedimentary | Marine organism shells, chemical precipitation | Calcite (CaCO₃), fossils | Cement, building stone, lime production, agriculture | USA (Indiana, Texas, Florida), UK (Yorkshire, Cotswolds), Germany, France, Italy, China, India, Egypt (Pyramids), Mexico, Spain, Poland, Brazil, Australia, Jamaica |
| Sandstone | Sedimentary | Compaction and cementation of sand | Quartz, Feldspar, rock fragments | Building stone, paving, aquifers, oil reservoirs | USA (Colorado, Utah, Arizona), Australia (Uluru), India (Rajasthan), UK, Germany, Egypt, Jordan (Petra), Saudi Arabia, France, Spain, Brazil, South Africa |
| Shale | Sedimentary | Compaction of clay and silt | Clay minerals, quartz, organic matter | Brick making, cement, shale gas/oil | USA (Texas, Pennsylvania), Canada, China, Argentina, Russia, Australia, UK, Germany, Poland, France, Brazil, India, South Africa, Nigeria |
| Coal | Sedimentary | Burial and compression of plant matter | Carbon, hydrocarbons, minerals | Fuel, steel production, chemicals | China, USA (Appalachia, Wyoming), India, Indonesia, Australia, Russia, South Africa, Germany, Poland, Colombia, Canada, UK, Ukraine, Kazakhstan |
| Marble | Metamorphism of limestone | Recrystallized calcite/dolomite | Sculpture, flooring, countertops, architecture | Italy (Carrara), Greece (Paros, Thassos), Turkey, India, China, Spain, Portugal, Belgium, USA (Vermont, Georgia), Brazil, Iran, Pakistan, Egypt | |
| Slate | Low-grade metamorphism of shale | Quartz, chlorite, muscovite | Roofing, flooring, blackboards, pool tables | Wales (UK), Spain, USA (Vermont, Pennsylvania), Brazil, China, India, France, Germany, Italy, Portugal, Argentina, Canada, Australia | |
| Quartzite | Metamorphism of sandstone | Interlocking quartz crystals | Countertops, flooring, railway ballast, road construction | Brazil, India, USA (Arizona, South Dakota), Norway, UK, South Africa, Namibia, Sweden, Finland, Canada, Australia, Spain, Italy | |
| Gneiss | High-grade regional metamorphism | Feldspar, quartz, mica (banded) | Building stone, crushed stone, decorative | Canada (Canadian Shield), Brazil, India, Norway, Sweden, Finland, USA (Minnesota), Russia, Greenland, Australia, South Africa, Antarctica | |
| Schist | Medium-grade metamorphism | Mica, chlorite, talc, hornblende | Decorative, landscaping, building | Scotland, Norway, Alps (Switzerland, Austria, Italy), USA (New England), Brazil, India, Australia, New Zealand, Japan, Russia, Canada | |
| Conglomerate | Sedimentary | Cementation of rounded gravel | Various pebbles in matrix | Decorative stone, road base, construction | USA (Western states), South Africa (Witwatersrand gold), Australia, Canada, UK, France, Spain, Italy, Germany, Brazil, Russia, India |
| Diorite | Igneous | Slow cooling of intermediate magma | Plagioclase, hornblende, biotite | Building stone, sculpture, countertops | Egypt (ancient artifacts), Peru, UK (Scotland), Norway, Sweden, USA (California), Germany, France, Italy, New Zealand, Japan, Chile |
Minerals are naturally occurring inorganic solids with a definite chemical composition and crystalline structure. Over 5,500 mineral species are known to exist.
Developed by German mineralogist Friedrich Mohs in 1812. This scale measures the scratch resistance of minerals from 1 (softest) to 10 (hardest).
Silicates are the largest group of minerals, making up about 90% of Earth's crust. They all contain silicon and oxygen in their structure.
Oxide minerals contain oxygen bonded to one or more metals. Many important ore minerals are oxides.
Sulfide minerals contain sulfur bonded to metals. They are important sources of many metals including copper, lead, zinc, and silver.
Carbonate minerals contain the carbonate ion (CO₃²⁻). They often form from biological processes and are important in the carbon cycle.
Native element minerals occur as single elements in nature, not combined with other elements. They include metals like gold, silver, and copper, as well as non-metals like sulfur and carbon (diamond/graphite).
Precious and semi-precious gemstones are minerals valued for their beauty, durability, and rarity. They have been treasured by civilizations throughout history.
Fossils are the preserved remains or traces of ancient life. They provide crucial evidence about Earth's biological history spanning over 3.5 billion years.
Preserved remains of actual organisms - bones, shells, teeth, leaves, wood
Evidence of activity - footprints, burrows, coprolites (fossilized feces)
Organisms preserved in tree resin - insects, spiders, plant material
Preserved in ice - woolly mammoths, ancient bacteria, prehistoric plants
| Fossil Site | Country | Age | Famous Discoveries | Significance |
|---|---|---|---|---|
| Burgess Shale | 🇨🇦 Canada (British Columbia) | 508 Ma (Cambrian) | Anomalocaris, Hallucigenia, Opabinia, Pikaia | UNESCO Site - Best Cambrian Explosion fossils, soft tissue preservation |
| Liaoning Province | 🇨🇳 China | 125-120 Ma (Cretaceous) | Feathered dinosaurs (Sinosauropteryx, Microraptor), early birds, mammals | Revolutionized dinosaur-bird evolution understanding |
| La Brea Tar Pits | 🇺🇸 USA (Los Angeles) | 50,000 - 11,000 years | Saber-toothed cats, dire wolves, mammoths, giant ground sloths | Most diverse Ice Age fossil site in the world |
| Solnhofen Limestone | 🇩🇪 Germany (Bavaria) | 150 Ma (Jurassic) | Archaeopteryx (first bird), pterosaurs, horseshoe crabs | Exceptional preservation, famous transitional fossils |
| Hell Creek Formation | 🇺🇸 USA (Montana, Dakotas) | 68-66 Ma (Cretaceous) | Tyrannosaurus rex, Triceratops, Edmontosaurus | Last dinosaurs before extinction, K-Pg boundary |
| Cradle of Humankind | 🇿🇦 South Africa (Gauteng) | 4-1.5 Ma | Australopithecus africanus, Homo naledi, Mrs. Ples | UNESCO Site - Critical human evolution evidence |
| Olduvai Gorge | 🇹🇿 Tanzania | 2.1-0.015 Ma | Homo habilis, Paranthropus boisei, early stone tools | "Cradle of Mankind" - Key human evolution site |
| Messel Pit | 🇩🇪 Germany (Hesse) | 47 Ma (Eocene) | Darwinius (Ida), early horses, bats, crocodiles | UNESCO Site - Extraordinary mammal preservation |
| Morrison Formation | 🇺🇸 USA (Western states) | 155-148 Ma (Jurassic) | Allosaurus, Diplodocus, Stegosaurus, Brachiosaurus | Most productive dinosaur fossil region in North America |
| Patagonia | 🇦🇷 Argentina / 🇨🇱 Chile | 100-66 Ma (Cretaceous) | Argentinosaurus, Giganotosaurus, titanosaurs | Largest dinosaurs ever discovered |
| Gobi Desert | 🇲🇳 Mongolia / 🇨🇳 China | 100-66 Ma (Cretaceous) | Velociraptor, Protoceratops, dinosaur eggs/nests | First dinosaur eggs, fighting dinosaurs fossil |
| Baltic Amber Deposits | 🇵🇱 Poland / 🇷🇺 Russia / 🇱🇹 Lithuania | 44-40 Ma (Eocene) | Insects, spiders, feathers, plant matter | Largest amber deposit, exceptional preservation |
| Dinosaur Provincial Park | 🇨🇦 Canada (Alberta) | 77-74 Ma (Cretaceous) | 40+ dinosaur species including hadrosaurs, ceratopsians | UNESCO Site - Highest dinosaur diversity |
| Chengjiang | 🇨🇳 China (Yunnan) | 518 Ma (Cambrian) | Yunnanozoon, Myllokunmingia (early fish) | UNESCO Site - Earliest complex animal fossils |
| Karoo Basin | 🇿🇦 South Africa | 260-200 Ma (Permian-Triassic) | Therapsids (mammal ancestors), early dinosaurs | Best Permian-Triassic transition record |
| Ediacara Hills | 🇦🇺 Australia (South Australia) | 575-541 Ma (Ediacaran) | Dickinsonia, Kimberella, earliest multicellular life | Defined the Ediacaran Period - first complex life |
| Riversleigh | 🇦🇺 Australia (Queensland) | 25-5 Ma (Oligocene-Pliocene) | Marsupial lions, giant wombats, extinct platypus | UNESCO Site - Australian mammal evolution |
| Afar Region | 🇪🇹 Ethiopia | 4-2 Ma | Lucy (Australopithecus afarensis), Ardi (Ardipithecus) | Most complete early human ancestor fossils |
| Green River Formation | 🇺🇸 USA (Wyoming, Colorado, Utah) | 53-48 Ma (Eocene) | Fish (Knightia), early horses, crocodiles, plants | Best lacustrine (lake) fossil deposits |
| Jurassic Coast | 🇬🇧 United Kingdom (Dorset) | 250-66 Ma (Triassic-Cretaceous) | Ichthyosaurs, plesiosaurs, ammonites | UNESCO Site - 185 million years of history exposed |
| Siberian Permafrost | 🇷🇺 Russia | 50,000-10,000 years | Woolly mammoths, woolly rhinos, cave lions | Best preserved Ice Age specimens (with soft tissue) |
| Fayum Depression | 🇪🇬 Egypt | 37-29 Ma (Eocene-Oligocene) | Early whales, early primates, early elephants | Critical for understanding African mammal evolution |
Earth's history is divided into eons, eras, periods, and epochs based on major geological and biological events recorded in the rock record.
Explore mineral deposits, rock formations, and fossil sites from every corner of the world. Click on markers for detailed information.