Vesicular texture
In today's world, Vesicular texture has become a topic of great relevance and interest to a wide range of people. From its impact on society to its influence on people's daily lives, Vesicular texture provides a fascinating scenario that deserves to be explored in depth. This article seeks to analyze different aspects related to Vesicular texture, as well as provide a comprehensive vision that allows the reader to better understand its importance and impact in various areas. Throughout these pages, we will delve into its origins, evolution, challenges and possible solutions, in order to offer a complete perspective that encourages reflection and debate around Vesicular texture.
Vesicular texture is a volcanic rock texture characterized by a rock being pitted with many cavities (known as vesicles) at its surface and inside. [1] This texture is common in aphanitic, or glassy, igneous rocks that have come to the surface of the Earth, a process known as extrusion. As magma rises to the surface the pressure on it decreases. When this happens gasses dissolved in the magma are able to come out of solution, forming gas bubbles (the cavities) inside it. When the magma finally reaches the surface as lava and cools, the rock solidifies around the gas bubbles and traps them inside, preserving them as holes filled with gas called vesicles. [2]
A related texture is amygdaloidal in which the volcanic rock, usually basalt or andesite, has cavities, or vesicles, that are filled with secondary minerals, such as zeolites, calcite, quartz, or chalcedony.[3] Individual cavity fillings are termed amygdules (American usage) or amygdales (British usage). Sometimes these can be sources of semi-precious or precious stones such as diamonds.
Rock types that display a vesicular texture include pumice and scoria.
See also
References
- ^ See "Elmhurst College Powerpoint via google viewer" Archived October 30, 2012, at the Wayback Machine, retrieved May 8, 2011
- ^ D. Armstrong, F. Mugglestone, R. Richards and F. Stratton "OCR AS and A2 Geology". Pearson Education Limited, 2008, p. 76.
- ^ Vesicules and Amygdule, pitt.edu, accessed 14 Sept 2021.
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