Woudloper/Woodwalker is a young geologist from Berne, Switzerland. On commons I like to create pictures and diagrams that illustrate geological processes, though most of my pictures are just photos. If you want to have a translation of any of my files into any language, please feel free to contact me.
Some files I made:
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A boundstone, a clastic sedimentary rock made of fossils. In this case Jurassic Pelecypoda gryphea shells
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Isoclinal folds and shearing in an orthogneiss
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Large-scale folds in a mountain side (Gasteretal, Switzerland)
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White vesicles (bubbles) in basaltic lava
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Diamond-bearing kimberlite, green pyroxene clasts
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Pyroxenite and peridotite banding: result of fractional crystallisation in the Earth's mantle
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Piece of the Earth's mantle taken to the surface by volcanic activity
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Mylonitic and amphibolitic gneiss, nice porphyroclasts
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Large phenocrysts in a granite. Most likely they form by recrystallisation when the intrusion cools
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Boudinage in a sheared orthogneiss
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Ultrahigh pressure metamorphism turned this gabbro (after being subducted) into an eclogite
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Banded Iron Formation, more than 3 billion years old
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Thin sections of rocks under the microscope
Pictures of fossils
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Fossil fern from the Upper Carboniferous (300 million years old)
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Annularia stellata, another Carboniferous plant fossil
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Fossil ammonite from the Lower Cretaceous (130 million years old)
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More lower Cretaceous ammonites
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Fossil trilobite from the Devonian (360 million years old)
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Claw of the dinosaur Therizinosaurus (70 million years old)
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Grasshopper fossil in an Upper Cretaceous rock
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Diagram showing the rock cycle (+legend on file page)
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Diagram showing volcanic and intrusive structures
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Magmatic and volcanic processes
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Diagram explaining the relation between plate tectonics and generation of magma
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Diagram explaining fractional crystallisation
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Diagram showing cross-cutting relationships
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Illustration of the principle of lateral continuity
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Diagrams showing stratigraphic relations
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Schematic representation of sedimentary facies shifts
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Schematic representation of cementation and compaction processes in a sandstone
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Schematic representation of an inverse fault (original by
RobinL)
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Blind thrust fault with fault propagation folding
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Diagram showing the principle of isostatic equilibrium in the Earth's lithosphere
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Schematic representation of a metamorphic reaction
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Metamorphic reactions in P-T space
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Metamorphic facies
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ACF triangles for metamorphic rocks
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AFM triangles for metamorphic rocks
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(Approximate) mineralogy of igneous rocks
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Classification scheme for aphanitic igneous rocks
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My version of the classification of plutonic rocks (Dutch). Simplified it by using colours
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Cleavage modes (original by
Fradeve11)
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Ophiolite sequence (original by
Fradeve11)
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Cladistic diagram of dinosaur evolution (with the advice of
MWAK)
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Species that migrated during the Great American Interchange
Geologic and paleogeographic maps
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Geologic map of the NW of France
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Geologic map of SE England and the English Channel
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Geologic map of SW England and Wales
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Tectonic map of Europe
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Tectonic map of the Mediterranean
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Graben structures of the southern Netherlands
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Caledonian orogeny
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Hercynian/Variscan orogeny
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Hercynian basement structures of Western Europe
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Fossil evidence for the Iapetus Ocean
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