User:Siim
My name is Siim Sepp. I am a geologist and science writer.
Most of my photos are available on my educational website: Sandatlas.
Foraminifera
Sulfur and gypsum from a salt dome cap rock
Variscite in sandstone
Skarn composed of calcite, pyroxene, and garnet
Blue asbestos crocidolite (fibrous riebeckite)
Collage of sand samples with versatile composition
Agate breccia
Calcite
Conglomerate
Coral sand
Folded sedimentary rocks
Tuff
Quartz
Maps[edit]
Names and location of Estonian counties
Location map of Hiiu maakond
Location map of Saare maakond
Location map of Lääne maakond
Location map of Pärnu maakond
Location map of Rapla maakond
Location map of Harju maakond
Location map of Ida-Viru maakond
Location map of Lääne-Viru maakond
Location map of Jõgeva maakond
Location map of Tartu maakond
Location map of Viljandi maakond
Location map of Järva maakond
Location map of Valga maakond
Location map of Võru maakond
Location map of Põlva maakond
Relief map of Antarctica, based on USGS DEM
Relief map of Estonia
Rocks[edit]
Igneous rocks[edit]
Amygdaloidal andesite
Basalt breccia
Basalt in albitite
Diabase
Diorite
Ignimbrite
Kimberlite
Kimberlite
Olivine basalt
Olivine basalt
Limburgite
Metamorphic rocks[edit]
Chlorite schist
Eclogite
Gneiss
Phyllite
Quartzite
Quartzite
Migmatite
Sedimentary rocks[edit]
Banded iron formation
Dolostone
Kukersite
Limestone
Siltstone
Microphotos of thin sections[edit]
Andesite (crossed polars)
Diorite (crossed polars)
Diorite (plane polarized light)
Gabbro (crossed polars)
Granite (crossed polars)
Graniteporphyry (crossed polars)
Granodiorite (crossed polars)
Rhyolite (crossed polars)
Geological structures[edit]
Glacially abraded rocks in western Norway near Jostedalsbreen glacier
Gulch in Scotland
Roadside outcrop of schist in Scotland
Dike, Island of Mull, Scotland
Andesite outcrop. Eastern coast of Scotland
Sand[edit]
Heavy mineral sand composed mainly of garnet crystals from Alaska
Heavy mineral sand composed mostly of olivine crystals from Hawaii
