The Velodrome is a large recumbent fold spilled southward, formed at the end of the Tertiary (23 to 5 million years) at the Alpine front...
The Hot spring
A hot spring is a spring that is produced by the emergence of geothermally heated groundwater from the Earth's crust. There are geothe...
Pelagic Sediment
Pelagic sediment or pelagite is a fine-grained sediment that accumulates as the result of the settling of particles to the floor of the o...
Splendid Spessartine crystals
Spessartine. Formula:Mn32+Al2(SiO4)3 System:Isometric Colour:Red, reddish orange, ... Lustre:Vitreous Hardness:6½ - 7½ From: Wushan Sp...
Banded Iron Formations BIF
Jaspilite banded iron formation (Soudan Iron-Formation, Soudan, Minnesota, USA Image Credits: James St. John Banded iron formations ...
Amazing Emerald Crystal on Crystals
The same amazing Emerald specimen but this time photographed with a real camera and not a phone camera. Note the difference in color acc...
The Triple Frontier where the Borders of 3 Countries Meet.
The Triple Frontier is the tri-border region where the borders of 3 countries meet: Argentina, Paraguay and Brazil. While there are man...
California Syncline
Fitzgerald Marine Preserve, San Mateo County, CA A syncline is a fold with younger layers closer to the center of the structure. Sync...
Fulgurites: When Lightning Strikes Sand, Magic is Formed
Fulgurites (from the Latin fulgur meaning thunderbolt) are a variety of the mineraloid lechatelierite. They are natural hollow glass tub...
Tectonic Settings of Metal Deposits
From Skinner and Porter, 1987 Ore Deposits and Plate Tectonics P late tectonics, like crustal evolution, provides a basis for un...
Cross Section Interpretation Exercise
Using the laws of original horizontality, superposition, and cross-cutting relationships interpret the order of the formation of featu...
The Difference between Rocks and Minerals .
mineral —A naturally occurring, homogeneous inorganic solid substance having a definite chemical composition and characteristic crystalli...
Fabulous Mexican Azurite
Azurite |#Geology Formula: Cu3(CO3)2(OH)2 System:Monoclinic Colour:Azure blue, blue, light ... Lustre:Vitreous Hardness:3½ - 4 A secon...
Lena's Stone Forest in Russia
Lena's Pillars, also called Lena’s Stone Forest, is a natural rock formation about 60 km upriver from Yakutsk, in Russia. The amazin...
Preachers Rock - Norway
Preikestolen is a mountain formed like a huge pulpit towering over the Lysefjord in Rogaland, Fjord Norway. There is a crack between the...
Elephant Rock
This rock is a fine example of an arch in the shape of an elephant. The rock is right next to the road, but as parking is limited on Va...
Amazing Folding Rocks at Agia Pavlos
Agios Pavlos, Greece Agios Pavlos, Greece These sedimentary limestone layers were once layered horizontal at the bottom of the...
West Salt Creek Landslide
Image of the recent West Salt Creek Landslide that occurred on May 25th at 5:44 PM local time near Collbran, Colorado. Aerial view i...
Hematite Aggregate
Hematite Aggregate Fe2O3 Botryoidal Habit A globular aggregate resembling a bunch of grapes with each round mass consisting of radiatin...
Natural Green Obsidian
The obsidian in the photo is displayed at Stephen Hui Geological Museum, Hong Kong. Credit: Stephen Hui Geological Museum Green Obs...
Spectacular Neon Blue Lava Pours From Indonesia's Kawah Ijen Volcano At Night (PHOTOS)
Spectacular Neon Blue Lava Pours From Indonesia's Kawah Ijen Volcano At Night You've heard of "red hot" and "...
Slab of Tiger Iron
Tiger Iron, a combination of Golden Brown Tiger Eye, Hematite, and Red Jasper, exhibits the metaphysical properties of its components a...
Superbe Opal Cabochon
Opal and Opal Cabochon Formula: SiO2 · nH2O Colour:Colorless, white, various Hardness:5½ - 6½ From: Queensland, Australia Size: 7cm ...
The Pink Lake - West Australia
Lake Hillier is a pink-colored lake on Middle Island, the largest of the islands and islets that make up the Recherche Archipelago, Wes...