Tuesday, 17 May 2011

Geological Imagery

Above is an image of a geological drawing that simplifies the strucutre of an anticline.
A syncline is an inverted version of this.

Aerial view of the tight syncline between the Sultan and the Sarkan anticlines.

Aerial view of the Chenareh anticline partly covered by a giant landslide
derived from the backlimb of the Kabir Kuh anticline to the south.

The three images above are of the calcium travertines in Turkey.

Moeraki Boulders

The Moeraki Boulders are a number of huge spherical stones, found strewn along a stretch of Koekohe Beach near Moeraki, a small settlement just south of Hampden on New Zealand's Otago coast. These boulders are grey-coloured septarian concretions which have been exposed through shoreline erosion from black mudstone coastal cliffs that back the beach. They originally formed in ancient sea floor sediments during the early Paleocene some 60 million years ago.

The boulders weigh several tonnes and are up to three metres in diametre.

Moeraki Boulders are septerian concretions formed some 65 million years ago. Crystallization of calcium and carbonates around charged particles in muddy undersea sediments gradually formed the boulders in a process taking as long as four million years.


Anticline Syncline
I studied this type of feature for my A level coursework.

Orbicular Granite

The markings on the rock aren’t man-made; they’re created by geological processes. This type of rock formation is called ‘orbicular granite’. Occurrences of such ‘orbicular granite is very rare. The fascinating rock formation on the above picture is located near the town of Calder in Chile. This unusual plutonic rock type is also known as ‘orbicular rock or orbiculite’. The uniqueness of this rock is due to orbicules – concentrically layered, spherical structures, probably formed through nucleation around a grain in a cooling magma chamber.

Read more: http://scienceray.com/earth-sciences/geology/world%e2%80%99s-most-amazing-rock-formations/#ixzz1Me50DZY2


Monolith located in Anafi Island, Greece.
Believed to be the second largest monolith in Europe

Peña de Bernal
This is the tallest monolith in the world - Mexico

In mass, La Peña de Bernal is beaten only by Ayer's Rock, in Australia. In height, it is the fourth tallest monolith in the world. One of Mexico's geological treasures, it rises 2,000ft (610 meters) from the ground

Peña de Bernal is a natural phenomenon created from the remains of an ancient volcano, in an otherwise relatively flat landscape. It has been 100 million years ago since this was an active volcano. At that time, it would have been three times bigger than it is now.


A large scale xenolith

A mantle xenolith in basanite from the Peridot Mine in San Carlos, Arizona

Monolith - Zambia

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