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Highly Allochthonous

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You're not missing much Chris Rowan is a geologist specialising in the dark arts of paleomagnetism, and getting people to pay him to travel to exotic destinations for fieldwork. Having drilled up New Zealand during his PhD, and South Africa in his first post-doc, he now works at the University of Edinburgh.

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A girl, a pack, a forest, a river Anne Jefferson has a love of all things water-related and blends hydrology, geomorphology, geology, and climate change in her work. She has a Ph.D. from Oregon State University and is now an assistant professor at the University of North Carolina at Charlotte.

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Rock Gallery

This gallery features some of the many pretty and informative images that have graced the pages of Highly Allochthonous over the years. Click on the thumbnails to see the posts in which they originally featured.

Rocks and Minerals

Deskcrop of Archean komatiite Deskcrop of cumulus magnetite, Bushveld igneous complex greigite, a magnetic iron sulphide
The real kryptonite. Sort of spinifex texture of Archean komatiite Chequamegon Sandstone, Bayfield Peninsula, Wisconsin
diorite in the Catwaba River, South Carolina late Neoproterozoic to earliest Cambrian Malmesbury Group sediments from the shoreline in Cape Town, S Africa 2.5 billion year-old banded chert from NW Australia


Sediments

Tidally influenced Archean cross-bedding in the Barberton greenstone belt imbricated boulders pothole carved from limestone by a current eddy
Proposed chevron deposits resulting from an impact-induced megatsunami


Fossils

Pteridinium, an enigmatic Ediacaran fossil Namacalathus, and early calcified animal from the late Precambrian Stromatolitethumb.jpg
TVStromthumb.jpg dinoprints_thumb.jpg The Stirling fauna - putative macrofossils from a billion years before the Cambrian explosion
POSSIBLY a rolled up fragment of an Archean bacterial mat - but possibly not...


Volcanoes

Precambrian black smoker vent from China Archean pillow lavas from the Barberton greenstone belt recently erupted lava on the East Pacific rise
New lava seem from space! plume from Sheveluch volcano, Kamchatka Tunnels dug to drain the crater lake of Mt Kelud
The damage pattern of the Mt St Helen's eruption irregularly jointed basalts just along the coast from the Giant's Causeway


Earthquakes and Tectonics

allochthonous finally explained! Coral reef lifted from sea by earthquake thrusting stress build-up on a fault prior to an earthquake
Foreshocks and aftershocks of the L'Aquila Earthquake, April 2009 The Iceland rift zone Deformation patterns in the northern Mediterranean


Geophysics

compositional layering in the Earth remanent magnetisations and overprints explained the Earth's magnetic fieldf
Why the mantle is NOT molten - usually Using seismic waves to estimate the thickness of the crust subducted water locked into mantle rocks
lava beneath the East Pacific Rise


Planetary Geology

A Titanian lake, courtesy of Cassini's radar imager Volcanoes on Io - but why are they there? evidence of Martian plate tectonics?


Climate and the Environment

Drying of the Aral Sea, 1960-2009 Why Bangladesh floods so easily and often greenland temperature record
Satellite image of the Feb 2009 Australian bush fires


Miscellaneous Cool & Geological

the joys of palaeomagnetic sample orientation peperite - when lava mixes with wet sediments the amazing interactive UK geology map
elevated terrace of glacial Lake Missoula An uncomformity that spans almost 3 billion years of Earth history Two generations of dykes identified from Google Earth imagery
Geologic relations of formations in Cape Town


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