Metamorphism

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A whiff of old life…..Rocks might live for a long time compared to our biblical three score y

Link #science #geology #metamorphic #metamorphism #garnet #schist #mineral #crystal #tethys #sediment #pelite #mudstone #plate tectonics #the earth story

Chilled MarginThis is a dike of Andesite magma that intruded a sandstone near Lima, Peru. A dike is

Link #science #geology #igneous #magma #chilled margin #metamorphism #cooling #thermodynamics #diffusion #andesite #eruption #volcano #volcanomonday #the earth story

Marble colorsMarble is a metamorphic rock composed dominantly of the mineral calcite (calcium carbon

Link #geology #science #washington monument #marble #color #mineral #crystal #calcite #carbonate #baltimore #metamorphic #metamorphism #piedmont #plate tectonics #history #civil war #the earth story

Light and dark slateSlate is a type of metamorphic rock that breaks or cleaves along planes. You’ve

Link #slate #geology #science #metamorphic #bedding #sedimentary #sediment #metamorphism #construction #cleavage #the earth story

Rock and rollWhen I look at a rock like this I find that I almost can feel the motion within. It’s l

Link #science #geology #metamorphic #amphibole #stress #strain #calcite #foliation #shear #subduction #metamorphism #mineral #mineralogy #crystal #the earth story #fault #tibet

Ultra-high temperature rocks found in the US.OK, well they’re not hot anymore, but they once were. T

Link #science #metamorphic #metamorphism #mineral #garnet #rutile #crystal #thin section #core complex #the earth story #geology

Sheared rubyA rather nice little crystal of red corundum from the Mogok stone tract of Burma testifi

Link #science #nature #geology #burma #myanmar #himalaya #aluminum #corundum #mineral #gemstone #crystal #metamorphic #metamorphism #marble #the earth story #fault #shear #quartz

CharoiteOne of the world’s more unusual gemstone materials is the rare mineral Charoite, named

Link #mineral #science #crystal #crystals #geology #gemstone #mineralogy #charoite #russia #yakutia #siberia #feldspar #carving #carver #fluorine #fluorosilicate #quartz #syenite #granite #limestone #metamorphism #metasomatism #chemistry #the earth story

Benitoite on natroliteWhile we have covered California’s state gemstone before (see http://on.

Link #science #mineral #gemstone #benitoite #natrolite #mineralogy #zeolite #cdrystal #sedimentary #fluid #metamorphic #metamorphism #geology #the earth story

ClinozoisiteA close relative of the mineral we know more commonly as Tanzanite (see http://tinyurl.c

Link #clinozoisite #tanzanite #epidote #mineral #metamorphism #metamorphic #crystal #mineralogy #calcium #granite #skarn #prism #pakistan #geology #the earth story #science

Magnificent rhodoniteWhile we covered this beautiful pink to red manganese silicate before (see http

Link #rhodonite #manganese #silicate #mineral #crystal #crystals #cleavage #science #geology #gemstone #mineralogy #brazil #chemistry #metamorphism #hydrothermal #the earth story

Milkyway over the MatterhornOne of Europe’s tallest peaks stands proudly at 4,478 metres on th

Link #matterhorn #milky way #night sky #dark sky #switzerland #italy #mountain #glacier #science #geology #erosion #tethys #ocean #subduction #metamorphism #the earth story

How Solid Rocks FlowActually, there are several mechanisms by which solid rocks flow, and some flow

Link #geology #metamorphism #metamorphic #science #cataclasis #pressure #temperature #solid #fluid #chemistry #mineral #mineralogy #the earth story

Garnets.A garnet is not a single mineral; instead it is a group of minerals with slightly differing

Link #garnet #mineral #metamorphic #metamorphism #crystal #science #geology #barbarian #gemstone #roman empire #the earth story

Distortion 2As we illustrated in the last post, some processes are universal, such as the response o

Link #geology #science #metamorphic #gneiss #hammer #nature #the earth story #metamorphism

Whopping nephrite boulderNephrite is one of the two unrelated minerals that occupy the umbrella term

Link #boulder #science #nature #nephrite #mineral #metamorphism #british columbia #the earth story #mineralogy

It’s BLUE, it’s SCHIST, it’s – BLUESCHIST!Blueschist is, amongst the rocks found on the surface of t

Link #geology #schist #metamorphic #glaucophane #mienral #science #nature #metamorphism #subduction #plate tectonics #blueschist #greece #olympus #the earth story

Lovely Listwaenite!Listwaenite, in this case, is the alteration product of an already altered ultram

Link #listwaenite #mineral #metamorphic #metamorphism #minerals #mineralogy #petrology #science #geology #harzburgite #peridotite #serpentine #alteration #pindos #the earth story

The Rama SchistThis is another part of the complex of twisted, bent, metamorphosed, nearly 2 billion

Link #grand canyon #rama schist #schist #geology #science #nature #landscape #metamorphic #metamorphism #crust #island arc #plate tectonics #the earth story

The Rama SchistThis is another part of the complex of twisted, bent, metamorphosed, nearly 2 billion

Link #grand canyon #rama schist #schist #geology #science #nature #landscape #metamorphic #metamorphism #crust #island arc #plate tectonics #the earth story

The deformation in the Grand CanyonThese are the same two units I showed in the last post moving up

Link #grand canyon #schist #granite #geology #deformation #metamorphic #metamorphism #science #mountain #national park #the earth story