Metamorphic series include the Barrovian and Buchan series of metamorphic rocks. George Barrow was a geologist in Scotland who discovered the Barrovian series.[1] These are also called metamorphic facies series. A metamorphic facies series is a sequence of metamorphic facies which plot in a temperature-pressure diagram along a line, and this line represents a certain geothermal gradient. They are not the same as metamorphic zones, as these are defined as a region on a geological map where the pressure-temperature conditions for an index mineral (a mineral that indicates the approximate metamorphic grade of a rock), were appropriate for these minerals to form.[2][3]
The Buchan and Barrovian facies series relate to this diagram of Al2SiO5 polymorphs (also called a petrogenetic grid), with increasing temperature along the x-axis and increasing pressure along the y-axis. See Metamorphism#RegionalThe figure above shows different metamorphic series for different rocks. The names Buchan and Barrovian facies series are often used in another context, i.e. for the kyanite-andalusite-sillimanite polymorphs. However, Buchan facies series plot along line 3 and Barrovian at somewhat higher pressure and with the appearance of kyanite. The facies series have connections to plate tectonics. Facies series 1 is typical of contact metamorphism, but also found in regional metamorphosed rocks. Facies series 2 correlates with volcanic arc environments, and so on: 3. Collisional mountain belts, regional metamorphism 4. Stable continents and 5. Accretionary prisms. Original image: Woudloper.
metamorphic, series, include, barrovian, buchan, series, metamorphic, rocks, george, barrow, geologist, scotland, discovered, barrovian, series, these, also, called, metamorphic, facies, series, metamorphic, facies, series, sequence, metamorphic, facies, which. Metamorphic series include the Barrovian and Buchan series of metamorphic rocks George Barrow was a geologist in Scotland who discovered the Barrovian series 1 These are also called metamorphic facies series A metamorphic facies series is a sequence of metamorphic facies which plot in a temperature pressure diagram along a line and this line represents a certain geothermal gradient They are not the same as metamorphic zones as these are defined as a region on a geological map where the pressure temperature conditions for an index mineral a mineral that indicates the approximate metamorphic grade of a rock were appropriate for these minerals to form 2 3 The Buchan and Barrovian facies series relate to this diagram of Al2SiO5 polymorphs also called a petrogenetic grid with increasing temperature along the x axis and increasing pressure along the y axis See Metamorphism RegionalThe figure above shows different metamorphic series for different rocks The names Buchan and Barrovian facies series are often used in another context i e for the kyanite andalusite sillimanite polymorphs However Buchan facies series plot along line 3 and Barrovian at somewhat higher pressure and with the appearance of kyanite The facies series have connections to plate tectonics Facies series 1 is typical of contact metamorphism but also found in regional metamorphosed rocks Facies series 2 correlates with volcanic arc environments and so on 3 Collisional mountain belts regional metamorphism 4 Stable continents and 5 Accretionary prisms Original image Woudloper Buchan metamorphism has the facies series greenschist amphibolite granulite Barrovian metamorphism has the same facies series but has approximately 1 kbar more pressure so these rocks form kyanite 4 References edit Regional metamorphism Tulane University Retrieved 23 August 2019 Philpotts A and Klein C Earth Materials 2013 Cambridge University Press New York pp 398 399 Marshak S 2015 Earth Portrait of a Planet pp 245 249 Tulane University Retrieved from https en wikipedia org w index php title Metamorphic series amp oldid 1070145058, wikipedia, wiki, book, books, library,
