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The Art of Rock Folding by Ern Mainka--Geological rock folding in sedimentary layers on beach coastline, Croajingalong National Park, Victoria, Australia. Approx 5×3 foot section shown.

The Art of Rock Folding by Ern Mainka--Geological rock folding in sedimentary layers on beach coastline, Croajingalong National Park, Victoria, Australia. Approx 5×3 foot section shown.

Gneiss - Gneiss is a metamorphic rock form characterized by discontinuous, altering light and dark layers, banding caused by segregation of different types of rock, typically light and dark silicates.

Gneiss - Gneiss is a metamorphic rock form characterized by discontinuous, altering light and dark layers, banding caused by segregation of different types of rock, typically light and dark silicates.

Geologic Folds in the Lower Ugab valley in Namibia - photo from northseattle.edu--- Wow!

Geologic Folds in the Lower Ugab valley in Namibia - photo from northseattle.edu--- Wow!

UK. Dorset Coast Geology: at Stair Hole, the rocks have been forced up & contorted into the Lulworth Crumples. Throughout the area surrounding the cove there are excellent examples of exposures of folded Jurassic/ Cretaceous rock strata, providing a continuous record of about 80 Ma of the Earth's past geography & climates

UK. Dorset Coast Geology: at Stair Hole, the rocks have been forced up & contorted into the Lulworth Crumples. Throughout the area surrounding the cove there are excellent examples of exposures of folded Jurassic/ Cretaceous rock strata, providing a continuous record of about 80 Ma of the Earth's past geography & climates

These rock layers started out flat and have been compressed into accordion shapes by regional pressures.

These rock layers started out flat and have been compressed into accordion shapes by regional pressures.

Geological folding involves the plastic deformation (bending, buckling) of a single or multiple strata, such as sediments and rocks, which were originally horizontal surfaces. Although even brittle rocks may undergo plastic deformation when stresses are applied over considerable periods of time (low strain rate). Beyond plastic deformation, rocks fail structurally and faulting occurs.

Geological folding involves the plastic deformation (bending, buckling) of a single or multiple strata, such as sediments and rocks, which were originally horizontal surfaces. Although even brittle rocks may undergo plastic deformation when stresses are applied over considerable periods of time (low strain rate). Beyond plastic deformation, rocks fail structurally and faulting occurs.

A new pattern designed by my friend, Diane Greenfield! I've knit it and it's beautiful! Shibui Yarns- Strata

Silk Cloud

A new pattern designed by my friend, Diane Greenfield! I've knit it and it's beautiful! Shibui Yarns- Strata

Dat fold!!! This picture is infinitely fascinating to me. It's so cool that only the top few layers folded and the others stayed horizontal.

Dat fold!!! This picture is infinitely fascinating to me. It's so cool that only the top few layers folded and the others stayed horizontal.

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