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Latest Petrology Stories

095f69449d119063427f382342aee25a
2011-08-12 13:30:19

The 2010 ash cloud from Iceland’s Eyjafjallajokull volcano that disrupted air travel in the UK and cost European businesses more than 2 and a hlaf billion dollars was likely a once in a lifetime event.

5a01292ad631a8828e431d0720c21719
2011-08-11 08:41:57

Sunken oceanic crust resurfaces from Earth's mantle after only 500 million years.

2011-08-04 14:38:00

VANCOUVER, Aug. 4, 2011 /PRNewswire/ - Ralph Rushton, the President of Emerick Resources Corp.

2011-06-30 17:43:43

Scientists and drillers recovered a remarkable suite of heat-tempered basalts that provide a detailed picture of the rarely seen boundary between magma and seawater.

2011-05-26 13:01:00

MOFFETT FIELD, Calif., May 26, 2011 /PRNewswire-USNewswire/ -- A team of NASA-funded researchers has measured for the first time water from the moon in the form of tiny globules of molten rock, which have turned to glass-like material trapped within crystals.

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2011-05-26 14:45:00

A team of NASA-funded researchers has measured water from the moon that shows some parts of the lunar mantle have as much water as the Earth’s upper mantle.

2011-05-18 16:07:56

Carbon found within ancient rocks has played a crucial role developing a time line for the emergence of biological life on the planet billions of years ago.

2011-05-13 07:00:00

VANCOUVER, May 13 /PRNewswire-FirstCall/ - Magma Energy Corp.

2011-05-12 13:00:00

WASHINGTON, May 12, 2011 /PRNewswire-USNewswire/ -- New data analysis from NASA's Galileo spacecraft reveals a subsurface ocean of molten or partially molten magma beneath the surface of Jupiter's volcanic moon Io.

2011-05-02 07:30:00

VANCOUVER, May 2 /PRNewswire/ - Magma Energy Corp. (TSX: MXY) today announced that its 2011 third quarter results will be released on Thursday, May 12th , 2011 after markets close.


Latest Petrology Reference Libraries

Chaitén
2014-08-28 10:38:21

Chaitén is a volcanic caldera that is located in southern Chile that reaches an elevation of 3,681 feet. It is thought that this volcano once held a rhyolite obsidian lava dome that reached 3,156 in height, but this was destroyed after its most recent eruption in 2008. In the past, this volcano has released grey obsidian, which was used by pre-Columbian cultures to make many objects, some of which have been found 250 miles away from the volcano. Chaitén experienced the beginning of a new...

28_e9750264d5476c85f9be09d17bc6fd51
2005-05-26 12:03:39

Biotite is a common phyllosilicate mineral that contains potassium, magnesium, iron and aluminium. It is sometimes called "iron mica" and is found in granitic rocks, gneisses, and schists. Like other mica minerals, biotite has a highly perfect basal cleavage, its flexible sheets easily flaking off. It has a hardness of 2.5 - 3, a specific gravity of 2.7 - 3.1, is colored greenish to brown or black, and can be transparent to opaque. Biotite is occasionally found in large sheets, especially in...

28_56635877b282726a86b25cf3e98722c2
2005-05-26 11:30:45

Chert is a fine-grained silica-rich cryptocrystalline sedimentary rock that may contain small fossils. It varies greatly in color from white to black, but most often manifests as gray, brown, grayish brown and light green to rusty red; its color is an expression of trace elements present in the rock, and both red and green are most often related to traces of iron (in its oxidized and reduced forms respectively). It outcrops as nodules in limestone, chalk, and dolostone formations as a...

28_42121cee4c09c0898f52263bea588d54
2005-05-26 11:26:59

Chromite, iron magnesium chromium oxide: (Fe,Mg)Cr2O4, is an oxide mineral belonging to the spinel group. Magnesium is always present in variable amounts, also aluminium and iron substitute for chromium. Chromite is found in peridotite and other layered ultramafic intrusive rocks and also found in metamorphic rocks such as serpentinites. Ore deposites of chromite form as early magmatic differentiates. It is commonly associated with olivine, magnetite, serpentine, and corundum. Chromite is...

28_b760796d3dace508242e89fc53d49081
2005-05-26 11:13:08

In geology, a conglomerate is a rock consisting of other stones that have been cemented together. Conglomerates are sedimentary rocks consisting of subangular clasts and are thus differentiated from breccias, which consist of angular clasts. Both conglomerates and breccias are characterized by clasts larger than sand (>2 mm). There are two varieties of conglomerate, defined by texture: paraconglomerates and orthoconglomerates. Paraconglomerates are one of two varieties of conglomerate...

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Word of the Day
edulcoration
  • The act of sweetening by admixture of some saccharine substance.
The word 'edulcoration' comes from a Latin word meaning 'making sweet'.