What is dynamo thermal metamorphism?
A common type of metamorphism involving the effects of directed pressures and shearing stress as well as a wide range of confining pressures and temperatures. It is related both geographically and genetically to large orogenic belts, and hence is regional in character.
What does protolith mean?
« Back to Glossary Index. The rocks that existed before the changes that lead to a metamorphic rock, i.e. what rock would exist if the metamorphism was reversed. parent rock, parent rocks.
Which of the following is a protolith in the formation of quartzite?
quartzite—quartzite is a metamorphic rock made almost entirely of quartz, for which the protolith was quartz arenite. Because quartz is stable over a wide range of pressure and temperature, little or no new minerals form in quartzite during metamorphism.
Which of the following is a protolith in the formation of phyllite?
The protolith (or parent rock) for phyllite is shale or pelite, or slate, which in turn came from a shale protolith. Its constituent platy minerals are larger than those in slate but are not visible with the naked eye.
What is hydrothermal metamorphism?
Hydrothermal metamorphism is the result of the interaction of a rock with a high-temperature fluid of variable composition. The difference in composition between an existing rock and the invading fluid triggers a set of metamorphic and metasomatic reactions.
What’s the meaning of metamorphism?
metamorphism, mineralogical and structural adjustments of solid rocks to physical and chemical conditions differing from those under which the rocks originally formed. Changes produced by surface conditions such as compaction are usually excluded.
How is quartzite formed?
Quartzite is a hard, non-foliated metamorphic rock which was originally pure quartz sandstone. Sandstone is converted into quartzite through heating and pressure usually related to tectonic compression within orogenic belts.
What is the parent rock of quartzite?
The parent rock to quartzite is sandstone. Quartzite forms from the recrystallization of quartz grains in the sandstone and often the resulting metamorphic rock will preserve vestiges of the original bedding patterns .
What is a fly swatter?
A fly swatter is the ultimate hand-held device that can help you to eliminate flies as well as other biting and stinging flying insects from your home and garden.
Will a fly swatter kill mosquitoes?
The fly swatter may be a simple device but as well as killing flies, it can be used to kill mosquitoes, moths, gnats, wasps, hornets, and even crawling insects such as roaches. This simple approach to pest elimination was invented via a collaboration between Samuel J. Crumbine and Frank H. Rose in Kansas, US in 1906.
What is the size of a typical flyswatter?
A typical flyswatter. A flyswatter (or fly swatter) usually consists of a small rectangular or round sheet of some 10 cm (4 in) across) of lightweight, flexible, vented material (usually thin metallic, rubber, or plastic mesh), attached to a lightweight wire or plastic handle about 30 to 60 cm (1 to 2 ft) long.
Who invented the flyswatter?
An early patent on a commercial flyswatter was issued in 1900 to Robert R. Montgomery who called it a fly-killer. Montgomery sold his patent to John L. Bennett, a wealthy inventor and an industrialist who made further improvements on the design.
https://www.youtube.com/watch?v=467RR_TGNME