Tectonic Gallery

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Marie Tharp and the Mid-Atlantic RidgeThe ocean floor has always been a mysterious place and in the

The Great Glen FaultIt is difficult to look at Scotland from above without noticing a major geologic

Caledonian foldingBack in the early Cambrian some 500 million years ago, the continental dance had a

Mount WoodringResembling a human profile staring enigmatically up into the sky, this peak in the Gra

AFAR DEPRESSION; ERITREA, DJIBOUTI AND ETHIOPIAThe Afar Depression (aka the Danakil Depression) is a

Whipstock HillThis spectacular road cut is found in Vermont near the boundary with New York. The roc

Wallace’s LineThe British naturalist Alfred Russel Wallace is most famous for his contribution

Mount Kinabalu at SunriseThis magnificent shadow is cast by Mount Kinabalu at sunrise. Kinabalu form

Subduction through the mantleA few days ago I described the “Wadati-Benioff zone” as one

Valles Marineris on Mars is an enormous set of valleys; so big in fact, that it is visible from Eart

The Avalon TerraneIt’s rather remarkable that right now, a person in Poland is standing on a s

India off to the racesAbout 100 million years ago, the Supercontinent Gondwana, composed of what are

stephenearp:Fracture lines, mineral deposits and the locals

THE COLUMNAR COAST OF TASMANIAThe dolerites of Tasmania are remnants of Gondwana, a “super con

Subducted seamountsSubduction zones are some of the most powerful faults in Earth’s crust. The

When Push Comes to Shove…Exit Stage RightThe tallest feature on planet Earth, by far, is the

Apparent Polar WanderThis image shows one of the fundamental techniques geologists use to reconstruc

Origins of the World’s Largest Single VolcanoHawaii’s Mauna Loa was regarded as the larg

Wonder lakeOne of the wonders of Denali National Park in Alaska it this beautiful body of water, see

jean-hofstadler:- Testemunhas geológicas da deriva continental, falésias de Torres.&nb

When did the continents appear?This gorgeous shot is Alaska’s Augustine volcano, one of the ma

Something sits under the SierrasThe Southern Sierra Nevada and the Los Angeles basin are some of the

Composition includes: biotite, muscovite, chlorite, feldspars, oxides, and quartz. Feldspar poikilob

This rock is predominantly composed of quartz, alkali feldspar, and plagioclase. The alkali feldspar

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