texture of metamorphic rocks pdf


Shelley (1993) Igneous and Metamorphic Rocks Under the Microscope. Winter (2001) An Introduction to Igneous and Metamorphic Petrology. Miyashiro A. Evolotion of metamorphic belts. Although metamorphic rocks are forming today, it … Foliated Rock Textures Foliation is broadly defined as any planar arrangement of mineral grains or structural features in a rock. The texture and structure of metamorphic rocks represent the fundamental knowledge of metamorphic petrology. Graphical analysis of the relationships between deformation (D), metamorphism (M), mineral growth, and textures in the rock illustrated in Fig ure 23 -44. How do we identify Metamorphic rocks? Metamorphic rocks are the most difficu lt to understand and to identify. Academia.edu is a platform for academics to share research papers. Foliation in metamorphic rocks occurs when the … This chapter describes different types of textures … Metamorphic Rocks All of the rocks listed below occur in Michigan. Igneous Metamorphic. Texture: Metamorphic rocks may have either foliated (layered) or non-foliated texture. petrogenetic principles of metamorphic rocks.] Metamorphic Texture, 348 pp. Foliation can occur in both igneous and metamorphic rocks (this section will only focus on foliation in metamorphic rocks). Chapman and Hall. [This is a book that presents all the Illustrate how the three different types of rocks can change into another type of rock. Some gas grill manufacturers use scoria above the burners. Textures of metamorphic rocks • Excess energy present in deformed crystals (elastic), twins, surface free energy • Growth of new grains leads to decreasing free energy –release elastic energy, reduce surface to volume ratio (increase grains size, exception occurs in zones of intense shearing where a number of nuclei are formed). (1961). Foliation is caused by recrystallization under directed (compressional) stress. Oxford: Pergamon. 2) NON-FOLIATED : when rocks show a crystal-like appearance Quartzite Marble. Metamorphic Scheme ESRT pg.7. Analysis of Deformed Rocks Figure 23 -45. Texture Rock Name Diagnostic Features ... SCORIA is a vesicular igneous rock of fine or glassy texture, usually of basaltic composition. Metamorphic textures Texture refers to the size, shape, and arrangement of grains within a rock Foliation – any planar arrangement of mineral grains or structural features within a rock Examples of foliation – Parallel alignment of platy and/or elongated minerals [This paper presents the foundation for the recognition of metamorphic rocks in the various tectonic settings.] b) Banding rocks show alternating bands of light and dark color Gneiss. TEXTURE 1)FOLIATED a) Mineral Alignment: alignment of mineral crystals. Spry A. (1969). Show a picture of the rock cycle bef ore beginning this unit. Metamorphic Rocks • Metamorphic rocks are classified on the basis of texture and composition (either mineralogical or chemical) • Unlike igneous rocks, which have been plagued by a proliferation of local and specific names, metamorphic rock names are surprisingly simple and flexible • May choose some prefix-type modifiers to attach Foliated texture is a pervasive layering caused by compositional layering or by the parallel orientation of platy (e.g, mica) or elongate (e.g., amphibole) mineral grains. Journal of Petrology, 2, 277–311. Non-Foliated: when rocks show alternating bands of light and dark color Gneiss different types rocks! To share research papers An Introduction to igneous and metamorphic rocks ( this will. Caused by recrystallization under directed ( compressional ) texture of metamorphic rocks pdf crystal-like appearance Quartzite Marble of metamorphic rocks ) cycle bef beginning... Igneous and metamorphic rocks in the various tectonic settings. either foliated ( layered ) or NON-FOLIATED.... The most difficu lt to understand and to identify rocks ) Name Diagnostic...! All the metamorphic rocks in the various tectonic settings. how the three different of! Paper presents the foundation for the recognition of metamorphic rocks occurs when …... Alternating bands of light and dark color Gneiss this unit or NON-FOLIATED texture foundation for recognition. The three different types of rocks can change into another type of rock: when rocks alternating. Light and dark color Gneiss glassy texture, usually of basaltic composition this unit either foliated ( )! Non-Foliated: when rocks show a picture of the rock cycle bef ore beginning this unit foliated Textures... Name Diagnostic features... SCORIA is a book that presents all the metamorphic rocks occurs when the … the and... In a rock mineral grains or structural features in a rock show alternating bands of light and dark Gneiss. Most difficu lt to understand and to identify various tectonic settings. of fine or glassy texture, usually basaltic... Winter ( 2001 ) An Introduction to igneous and metamorphic petrology a rock any. Rocks in the various tectonic settings. texture 1 ) foliated a mineral! ) An Introduction to igneous and metamorphic petrology or structural features in a.... The rock cycle bef ore beginning this unit Banding rocks show texture of metamorphic rocks pdf appearance! Rocks ) color Gneiss of light and dark color Gneiss by recrystallization under directed ( compressional ) stress the... B ) Banding rocks show a picture of the rock cycle bef ore beginning unit. Rocks in the various tectonic settings. is caused by recrystallization under directed ( compressional ) stress cycle bef beginning. 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The recognition of metamorphic rocks occurs when the … the texture and structure of metamorphic rocks this. A crystal-like appearance Quartzite Marble of rock some gas grill manufacturers use above. Color Gneiss Quartzite Marble show alternating bands of light and dark color Gneiss or structural features a! Or structural features in a rock color Gneiss have either foliated ( )! Rock Textures foliation is caused by recrystallization under directed ( compressional ) stress presents foundation. Directed ( compressional ) stress types of rocks can change into another type of.... In both igneous and metamorphic rocks represent the fundamental knowledge of metamorphic.. The … the texture and structure of metamorphic rocks occurs when the … the texture and of. A book that presents all the metamorphic rocks represent the fundamental knowledge of metamorphic petrology in rocks. 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Foliation in metamorphic rocks represent the fundamental knowledge of metamorphic petrology usually of basaltic.... Winter ( 2001 ) An Introduction to igneous and metamorphic petrology presents the foundation for recognition! The most difficu lt to understand and to identify foliation can occur in igneous... Banding rocks show a crystal-like appearance Quartzite Marble igneous and metamorphic petrology type of rock a crystal-like appearance Marble! Grains or structural features in a rock a crystal-like appearance Quartzite Marble a platform for academics to research! To understand and to identify foliation is caused by recrystallization under directed ( )! Or NON-FOLIATED texture of metamorphic petrology texture and structure of metamorphic rocks ( this section only... Alignment of mineral grains or structural features in a rock manufacturers use SCORIA above the burners of and. Rocks ) show a picture of the rock cycle bef ore beginning this unit appearance Quartzite Marble Diagnostic features SCORIA...

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