What causes Boudinage?
Boudins are typical features of sheared veins and shear zones where, due to stretching along the shear foliation and shortening perpendicular to this, rigid bodies break up. This causes the resulting boudin to take a characteristic sausage or barrel shape. They can also form rectangular structures.
What is Boudinage in rocks?
Boudinage, (from French boudin, “sausage”), cylinderlike structures making up a layer of deformed rock. Seen in cross section, the cylinders, or boudins, are generally barrel-shaped but may be lenslike or rectangular.
In what type of rock would one typically find Boudinage structures?
Boudinage is when a rock unit (usually a tabular rock unit like a bed of sedimentary rock or an igneous dike or a mineral vein) gets stretched, and responds to that stress in a brittle/ductile fashion.
What does chocolate tablet Boudinage tell us about the strain field?
To sum it up, boudinage is a very important structure when studying rocks in the field, which gives us important insights about deformation, rock strength, pressure and temperature conditions and the sense of shear.
What is ductile deformation?
Ductile deformation indicates shape change of a material through bending or flowing during which chemical bonds may become broken but subsequently reformed into new bonds.
What is boudin from Louisiana?
Boudin is a regional specialty found only in Southern Louisiana. This scrumptious treat is traditionally made with pork, rice, seasonings, and various vegetables, such as onions and green peppers.
How do Mylonites form?
Mylonite is a metamorphic rock formed by ductile deformation during intense shearing encountered during folding and faulting, a process termed cataclastic or dynamic metamorphism. Colour – variable, grey to black, but can form in a variety of colours dependent on parent rock composition.
What are the three types of unconformities?
Commonly three types of unconformities are distinguished by geologists:
- ANGULAR UNCONFORMITIES.
- DISCONFORMITIES.
- NONCONFORMITIES.
What are fault mullions?
The term mullion has been used in several different ways in the literature, ranging from striations on fault surfaces (fault mullions) to layer-interface structures formed during layer-parallel extension as well as contraction.
What’s the name of the Burmese cat breed?
Burmese Cat. Alternative Names: American Burmese, British Burmese. Origin: Thailand. Breed Description: Appears in 2 forms – American and British. The British ones are slender and have a long body while the American ones are broader and shorter with a flat muzzle.
What are the different types of cat breeds?
1 Persian Cat. Breed Description: Long haired breed of cat that has a short round face with a wide head. 2 Bengal Cat. 3 Burmese Cat. 4 Scottish Fold. 5 Sphynx Cat. 6 American Curl. 7 American Bobtail. 8 American Shorthair. 9 Siamese Cat. 10 Maine Coon.
Which is the best cat breed with pictures?
Here is a list of the top cat breeds with pictures: Persian Cat. Alternative Names: Longhair or Persian Longhair. Origin: Iran. Breed Description: Long haired breed of cat that has a short round face with a wide head.
What kind of cat has a triangular head?
Breed Description: This breed of cat has a muscular body with a triangular head. Alternative Names: Coon Cat, Maine Cat, Maine Shag, Snowshoe Cat Breed Description: These are the largest breeds of domestic cats with soft and silky coat. They are easy to train and are a loyal breed.