metamorphic textures pdf

The subsequent chapters describe the structural classification of grain … Non-foliated metamorphic rocks are further classified based on their composition. The slaty cleavage of the phyllite is what makes it a foliated rock. Video Lecture: Metamorphic Phase Rule and Triangular Diagrams. !����iL?�h_� $n��r N,�n�_�vH��;>����ݭ��8��k׫pt���OX�L��}��Ɩ\�1d�����}��!=�ym��˛s������6����R��l������%�/�^я �;�%6$�ĬZh�&5eC��B�*\Ľ����?���K�4�����V��X\� ȋ�?�U\���,���u��!M�|�w�3� #��r��գ��[�� �}>\�[��Y endobj (1990) Atlas of Metamorphic Rocks and their Textures. Examples include slate, gneiss, phyllite, and schist. Shape of grains – 3. II - Occurrence, Texture, and Classification of Igneous Rocks - Gezahegn Yirgu ... (see Igneous and Metamorphic Petrology; Processes of Magma Evolution, Magmatic Suites and Consequences for the Composition of Continental Crust). Metamorphic Scheme ESRT pg.7. 360 The texture of a metamorphic rock is both a description of its constituent minerals along with their arrangement and size. Written by admin. Igneous Metamorphic. From Understanding Earth, Press and Siever. Longmans. Magnification ~20X. Types of Foliation Schistosity: Foliation found in Schist due to the alignment of the platy micas. Uplift Metamorphism . • The heat may come from magma intrusion or deep burial via subduction at convergent boundaries. →Sil reaction can be accomplished while producing the textures illustrated in Figure 26.20a and b. Atlas of Metamorphic Minerals. Introduction to Petrography -- John Butler, University of Houston; on-line course materials for igneous, sedimentary and metamorphic petrography. 2) NON-FOLIATED : when rocks show a crystal-like appearance Quartzite Marble. From Yardley et al. Metamorphic textures are divided into two major groups: foliated and non-foliated. The subsequent chapters … 3 Zircon Zircon, with distinct core and rim zones, in aluminous granulite. This book is composed of 11 chapters and begins with a presentation of the metamorphic processes and the production of metamorphic minerals. The … Regional Organisations and the Development of Collective - download pdf or read online. Foliation is produced in a rock by the parallel alignment of platy minerals (e.g., muscovite, biotite, chlorite), needle-like minerals (e.g., hornblende), or tabular minerals (e.g., feldspars). Cleavage Planar Fabric of Preferred Fracture, sub-parallel orientation, non-penetrative. Foliated Textures. METAMORPHIC TEXTURES & MINERALS GROUP 20: MEGHAN CLARK, MICHAEL FORNEA, MARK FRITCHIE, SAVINA NGUYEN, BRYCE PENNY Textures Introduction • Textural changes take place as rocks undergo prograde metamorphism. Contrib. 5 0 obj This is a porphyritic basalt that was regionally metamorphosed to epidote amphibolite facies. Polars crossed, width of view 2.5 mm. Discuss the mode of occurrence and characteristic textures common in metamorphic rocks. >g�Fg,� $þcw�N#�O_T�I�f|Y��GR����v�^�V����f �FZ9B.�ơ$0c�m�s�r��M9���mE�e������}�X�BQ�Q��; )b���GLC���;��ں`� �h�%��8��� ;��Ҩ3��"��MA 9a�>�E�զG5W��Y��5O&�ٜ�q�K�` f������ Petrol. The … TEXTURE 1)FOLIATED a) Mineral Alignment: alignment of mineral crystals. 4 Chapter 3: Chemographic Diagrams and Chemographic Projections. In geology this refers to the changes in mineral assemblage and texture that result from subjecting a rock to pressures and temperatures different from those under which the rock originally formed. This book is composed of 11 chapters and begins with a presentation of the metamorphic processes and the production of metamorphic minerals. Foliated Metamorphic Textures Slaty texture (Phyllite) Schistosity Gneissic texture. Magnification ~20X. Understanding the agents that bring about metamorphism. Size distribution of mineral grains – 2. HW07: Metamorphic Rocks, Processes, and Resources Gigapan Activity: Metamorphic Rocks and Their History 1 of 6 Complete Review Metamorphic rocks are rocks that have been transformed by intense heat and pressure. --describe metamorphic rocks, their mineral assemblages and textures, --Interpret metamorphic processes from evidence obtained in hand sample, thin section, and analytical data (mineral composition), --Interpret tectonic setting of metamorphic belt, and--Critically evaluate the literature regarding metamorphic principles, observations, to gain a better understanding of the earth … h). 1. In metamorphic rocks formed by differential pressure, minerals such as garnet are rotated due to the unequal pressure. Interpret the history of metamorphic rocks from their textures and mineral assemblages. Nonetheless, texture is a fundamental attribute of siliciclastic sedimentary rocks. Metamorphic Textures provides definitions, descriptions and illustrations of metamorphic textures, as well as the fundamental processes involved in textural development. Most metamorphic rocks have a texture resulting from a parallel orientation of crystals, which defines a foliation or lineation. Nonfoliate Texture: appear massive or granular without the characteristic parallel mineral grains in foliated rocks. Materi batuan metamorf pdf Metamorphic rocks are breeds derived from other breeds that are parental, such as frozen rocks and sedimentary rocks. Arrangement of grains into tectonite fabrics (can by purely crystallographic) Textural Terms denoting Tectonite fabric • Foliation: preferred dimensional alignment of mineral grains. Show description. TEXTURES Textures of metamorphic rocks fall into two broad groups, FOLIATED and NON-FOLIATED. %�쏢 Metamorphic Textures Foliated Texture: Minerals are arranged parallel to one another. The different textures of mineral grains within metamorphic rocks are used to infer information about the conditions which formed them. PDF: Metamorphic Textures. Temperature • Heat increases the rate of the chemical reactions that yield new minerals as parent rocks are metamorphosed. The basic procedural aspects of writing a description for metamorphic rocks or rock units are identical to those for sedimentary rocks and rock units. The change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. Metamorphic Textures provides definitions, descriptions and illustrations of metamorphic textures, as well as the fundamental processes involved in textural development. 4 Chapter 3: Chemographic Diagrams and Chemographic Projections. Typically this will be initially described as foliated or non foliated. Metamorphic Fabric and Texture FABRIC: Refers to orientation of the crystallographic lattices of the minerals TEXTURE: Refers to mineral distributions or orientations within the rock, overall structure of the rock. FREE PREVIEW. Chapter 26: Metamorphic Reactions. Mylonitic Texture Mylonites are rocks that have undergone modification of original textures by predominantly plastic flow due to dynamic recystallization. This is referred to as Isochemical metamorphism, and the metamorphic system in this case has remained closed. Metamorphic rock names have traditionally had their basis in one or more of 4 attributes: texture, composition, precursor lithology (protolith) and metamorphic grade. These are a few examples of igneous feature that survived regional-scale deformation. This parallel alignment causes the rock to split easily into thin layers or sheets. <> 10-Metamorphic_rocks_and_metamorphism__week7.pdf, Rutgers University, Newark • GEOLOGY MISC, Computer Technologies Program • GEOLOGY 1000. GEOLOGY – Vol. Foreign rocks come from the rocks themselves, but provided that they have gone through the process of mineralogy. Foliated metamorphic rocks have four distinguishable types of aligned textures and they normally have a banded or layered appearance. NON-FOLIATED metamorphic rocks. Help to identify the original rock type prior to metamorphism. Metamorphic rock - Metamorphic rock - Structural features: Metamorphic rocks are often intimately related to large-scale (kilometres of tens of kilometres) structural features of Earth. Metamorphic Fabric and Texture FABRIC: Refers to orientation of the crystallographic lattices of the minerals TEXTURE: Refers to mineral distributions or orientations within the rock, overall structure of the rock. This chapter describes different types of textures … x��T�N1! Others have a more isotropic arrangement of mineral grains. Video Lecture: Metamorphic Phase Rule and Triangular Diagrams. These crystalline changes create identifying textures, which is shown in the figure below comparing the phaneritic texture of igneous granite with the foliated texture of metamorphic gneiss. %PDF-1.3 METAMORPHIC TEXTURES PDF DOWNLOAD METAMORPHIC TEXTURES PDF READ ONLINE post kinematic definition geology texture of metamorphic rock… During metamorphism, new platy mineral grains grow in the direction of least stress,producing a planar texture called foliation.Rocks with only one mineral (such as limestone) or those that recrystallize in the absence of de- forming stresses do not develop strong foliation but instead develop a gran- ular texture.Mylonite develops where shearing along a fracture forms small grains by ductile destruction of … Traditional interpretation of spiral Si train in which a porphyroblast is rotated by shear as it grows. Metamorphism and Metamorphic Rocks Definition of Metamorphism The word "Metamorphism" comes from the Greek: meta = after, morph = form, so metamorphism means the after form. Spiral S i train in garnet, Connemara, Ireland. February 25, 2018 / 697 words By Alan Spry (Auth.) How do we identify Metamorphic rocks? Teacher note Identification of metamorphic rocks is difficult because there are so many varieties created by just a wide range of conditions. It may be any kind of igneous, sedimentary, or older metamorphic, Metamorphism differs from sedimentary and igneous rock-forming processes because it is entirely a, . Textures and Structures of Metamorphic Rocks 1. Atlas of metamorphic minerals and their textures. Best regional books. The exchange of ions shown between the two local zones is required if the reactions are to occur. 3.11a) – evidence for advanced SGL 101: MATERIALS OF THE EARTH Lecture … Metamorphic Scheme ESRT pg.7. • Processes leading to texture formation • Textures of Contact Metamorphism • High Strain Metamorphic Textures • Regional Metamorphic Textures • Replacement Textures and Reaction Rims 2. Gneiss Gneissic Texture 2. Texture - refers to degree of crystallinity, grain size, and geometrical relationships between the cons tituents of a rock (fabric). Foliated textures are described on the basis of the style or degree of foliation as well as composition. Becoming familiar with metamorphic textures and mineral assemblages. TEXTURES OF THE IGNEOUS ROCKS* Structure - large-scale features recognizable in the field, such as banding, lineation, jointing, and vesicularity. Igneous Metamorphic. (1990) Atlas of Metamorphic Rocks and their Textures. FREE PREVIEW. f). Freeman. After Carmichael (1969). From Spry (1969) Metamorphic Textures. Metamorphism is the process of change that a rock undergoes when exposed to physical and chemical. Mineral. stream Metamorphic Rock Lab Handout-1.pdf - Rojas 1 Metamorphic Rock Lab Learning Objectives \u00d8 \u00d8 \u00d8 \u00d8 Understanding the changes that occur during the. Examples include slate, gneiss, phyllite, and schist. How do we identify Metamorphic rocks? Textures and structures are caused by changes in the height and temperature of the pressure in the parent breed. Metamorphism changes texture, mineralogy, and chemical composition of the rock. The main difference is, of course, terminology. Metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (), without the protolith melting into liquid magma (a solid-state change). 6 0 obj Chemographic … Video Lecture: Chemographic Projections. Foliated textures result from a parallel arrangement of flat, platy minerals. John Wiley & Sons, New York la dolérite, olivine et plagioclase ne sont plus en équilibre la chaleur des intrusions de contact, les textures coronitiques: les textures ne sont pas orientées : L'INTERACTION DE LA CROISSANCE DES GRAINS ET DE LA DÉFORMATION Les textures préservent l'information sur le contexte géologique du métamorphisme … Metamorphic rocks exhibit a variety of textures. Non-foliated metamorphic rocks are typically composed of just one mineral and, therefore, usually show the effects of metamorphism with recrystallization in which crystals grow together, but with no preferred direction. This publication examines the improvement of collective … Phyllite is a metamorphic form of shale, mudstone, and siltstone. endobj Without careful examination by the Geologist, and the recognition of the subtle changes in mineralogy and texture, much time and money can be wasted by drilling past the economic basement. Course Hero is not sponsored or endorsed by any college or university. Syn-kinematic crystals Figure 23 -38. 16 0 obj Foliation is caused by recrystallization under directed (compressional) stress. Longmans. ISBN-13: 9780080133164. Syn-kinematic crystals Spiral Si train in garnet, Connemara, Ireland. Metamorphic Textures • Textural classification of metamorphic rocks is based on – 1. PDF: Metamorphic Triangular Diagrams and Phase Rule . Oxford. Pergamon. However, if there is loss or gain, the bulk chemistry varies and The kind of metamorphic rock made depends on the kind of original rock; for example, sandstone is turned to quartzite, shale is turned to slate, and limestone is turned to marble. These can range from textures similar to the original protolith at low grades of metamorphism, to textures that are purely produced during metamorphism and leave the rock with little resemblance to the original protolith. Foliation is described as the existence or appearance of layers. <> The discussion that is devoted to textures and their interpretation (Chapter 4) commences with a look at common metamorphic rock textures that can be encountered in the field. Academia.edu is a platform for academics to share research papers. 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. 21 Table of Contents These samples of phyllite all came from the same quarry in South Carolina. Textural features of metamorphic rocks have been discussed in the previous lecture. These criteria are not mutually exclusive and thus We only emphasize eight rocks, but there are many more varieties (and ISBN-10: 0080133169. g). ConclusionConclusion Textures of metamorphic rocks depend on the shape of the mineral, mode of growth and arrangement. Rock-forming minerals of metamorphic rocks, in thin section (a work in progress) 1 Olivine: forsterite Olivine: Forsterite, in marble. Plane-polarised light, width of view 2.5 mm. Uplift Metamorphism . From Yardley et al. Throughout their cooling history all magmatic rocks try to achieve mechanical and chemical equilibrium, but rarely succeed. Metamorphic Textures provides definitions, descriptions and illustrations of metamorphic textures, as well as the fundamental processes involved in textural development. This book is composed of 11 chapters and begins with a presentation of the metamorphic processes and the production of metamorphic minerals. Metamorphic systems: In many cases the bulk chemical composition of the rocks involved remains the same, such that the resultant change are in mineralogy and texture. Metamorphic Textures provides definitions, descriptions and illustrations of metamorphic textures, as well as the fundamental processes involved in textural development. PDF: Metamorphic Triangular Diagrams and Phase Rule . Relict igneous textures in metamorphic rocks are relatively common, mostly requiring that deformation has been limited enough to allow them to survive. Field names for metamorphic rocks are less logical, simple, and consistent than names for other rock types. With this in mind, today's lab focuses on common terms that are used to describe metamorphic rock textures, fabrics, structures 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. I. Igneous Textures A. Many of the mineral grains in metamorphic rocks display preferential orientations where the alignment of the minerals is parallel or subparallel to one another. 35. Metamorphic textures show a great diversity in the size, shape, orientation, and spatial arrangement of crystals, which results from variable P–T conditions during metamorphism. Video Lecture: Metamorphic Textures Part 2. Academia.edu is a platform for academics to share research papers. Chapter 3: Igneous Textures • 3.1.1 Rates of nucleation, growth, & diffusion – The relative rates of initial nucleation, crystal growth and diffusion will have considerable influence on the ultimate texture of the resulting rock • However, whichever rate is the slowest will be … • Deformation fabrics • Coarsening of grain size • Metamorphic minerals may grow and modify rock texture. Video Lecture: Metamorphic Textures Part 1. Increasing Metamorphic Grade . DRM-free (PDF) × DRM-Free Easy ... Metamorphic Textures provides definitions, descriptions and illustrations of metamorphic textures, as well as the fundamental processes involved in textural development. The texture and structure of metamorphic rocks represent the fundamental knowledge of metamorphic petrology. metamorphic textures and features. 2 Olivine: forsterite Olivine: Forsterite, in marble. Arrangements: Phyllite has a satiny appearance and waxy texture. The major types of foliation are: 1) Slaty cleavage. Metamorphic Textures. EESC4701: Igneous and Metamorphic Petrology TEXTURES OF IGNEOUS ROCKS LAB 3 HANDOUT Source: WWU. 36. Chapter 3: Igneous Textures • Magmatic reaction and resorption – Fig. EESC4701: Igneous and Metamorphic Petrology TEXTURES OF IGNEOUS ROCKS LAB 3 HANDOUT Source: WWU. ROCKS Introduction textures composition Be sure to ... 5.1 INTRODUCTION Magmas and Igneous Rocks - Tulane University An Introduction To Igneous And Metamorphic Petrology [PDF ... Chapter 8: Major Elements An Introduction To Igneous And Metamorphic Petrology [EPUB] The Rocks Introduction Igneous Rocks - West Virginia Network Geology Laboratory: Igneous Rocks and Processes Page - 1 … Non-foliated are formed as a result of tectonic movements or direct pressure which makes their formation highly dependent on their pre-existing conditions. Video Lecture: Metamorphic Textures Part 1. Relate common metamorphic rocks to different types of metamorphism. b) Banding rocks show alternating bands of light and dark color Gneiss . Chemographic … PDF: Metamorphic Textures. Non-foliated textures do not have lineations, foliations, or other alignments of mineral grains. FREE PREVIEW. Texture: Metamorphic rocks may have either foliated (layered) or non-foliated texture. Most metamorphic rocks have a texture resulting from a parallel orientation of crystals, which defines a foliation or lineation. Chapters 5–7 cover textural features that can be attributed to metamorphic reactions more or less in the absence of active deformation. Foliation: Any Penetrative set of more or less parallel SURFACES. Oxford. Other kinds of metamorphic rock are named for the kinds of minerals present, the size of the grains and other textures. Geol., 4, 37-67. Figure \(\PageIndex{3}\): An igneous rock granite (left) and foliated high-temperature and high-pressure metamorphic rock gneiss (right) illustrating a metamorphic texture. In geology this refers to the changes in mineral assemblage and texture that result from subjecting a rock to pressures and temperatures different from those under which the rock originally formed. 6.2.2: Non-foliated. DRM-free (PDF) × DRM-Free Easy ... Metamorphic Textures provides definitions, descriptions and illustrations of metamorphic textures, as well as the fundamental processes involved in textural development. Nonfoliate Texture: appear massive or granular without the characteristic parallel mineral grains in foliated rocks. The subsequent chapters describe the structural classification of grain … As phyllite weathers it parts along the cleavage planes. (1986) J. Metam. x��VM��D I�A� ���4MWWWU� !qK4�)�D(i��/�m�{�]�����뽪�s6�@i��Z�����l|��p6ṕ���~z�D9r(4�r����'�o���/OƷ��:u)n��Ay�]��?��O��C�k|��b��l(��=����TNed.j��%)Ę��{�����J �i�N��R�IJ�n�*�*���>�H���w{ The texture and structure of metamorphic rocks represent the fundamental knowledge of metamorphic petrology. Metamorphic Textures Foliated Texture: Minerals are arranged parallel to one another. Metamorphic Scheme ESRT pg.7. metamorphic rocks. Get Metamorphic Textures PDF. Non-foliated are formed as a result of tectonic movements or direct pressure which makes their formation highly dependent on their pre-existing conditions. Video Lecture: Chemographic Projections. Metamorphic textures: Foliation • Planar fabric in metamorphic rocks formed due to directed stresses • Can be defined by planes of weakness (ex. FREE PREVIEW. This means that the original rock remains in a solid state without breaking. They can exhibit a wide range of textures depending on the intensity of metamorphism. contact … The subsequent chapters describe the structural classification of grain … Syn-kinematic crystals Figure 23-40. Students are asked to distinguish foliated and nonfoliated textures to help identification of metamorphic rocks. Metamorphic Scheme ESRT pg.7. Foliation: Any Penetrative set of more or less parallel SURFACES. Texture: Metamorphic rocks may have either foliated (layered) or non-foliated texture. Types of Foliation Schistosity: Foliation found in Schist due to the alignment of the platy micas. The discussion that is devoted to textures and their interpretation (Chapter 4) commences with a look at common metamorphic rock textures that can be encountered in the field. Cataclastic - Hornfelsic - Granoblastic - Schistose Summarize the progression of different rock types produced by regional metamorphism. Understanding the changes that occur during the formation of metamorphic rocks. �W�i C��4�L��n����lG�ӓ8��5栙kr^L�g�d+�3������B�~��j�2����. Along with other properties of these rocks, it helps to characterize and distinguish them from other types of rocks and it aids in their correlation. 3.10 is an example – Olivine OPX – Resorption – refusion or dissolution of mineral back into the melt or solution from which it formed – Resorbed crystals commonly have rounded corners or are embayed – Sieve texture (Fig. Video Lecture: Metamorphic Textures Part 2. Help to identify metamorphic reactions that may have taken place during the rock's history, and essential for deriving the P-T paths of such rocks. "q��Iي�Ut����endstream Cleavage Planar Fabric of Preferred Fracture, sub-parallel orientation, non-penetrative. Pergamon. The formation of mylonites occur at depth, below brittle faults, in continental and oceanic crust. conditions significantly different from those under which it first formed. The subsequent chapters describe the structural classification of grain … 2) NON-FOLIATED : when rocks show a crystal-like appearance Quartzite Marble. b) Banding rocks show alternating bands of light and dark color Gneiss . Metamorphism changes texture, mineralogy, and chemical composition of the rock. Others have a more isotropic arrangement of mineral grains. Such features include folds, nappes, and faults with a wide variety of geometries. This preview shows page 1 - 3 out of 3 pages. contact … If we treat isograds as reactions, we can: • Understand what physical variables might affect the location of a particular isograd • We may also be able to estimate the P-T-X conditions that an isograd represents. ���}�e�5O_mu!��J[�M�R�E��V��gm�Yь��5�2������źU�s&���wа6í������^,�.�@Na2F82�z.dDgF^���wUH�w�1n�l��Dd��a6�Ô I/�M�-��. ���?��R����Հy�7� �=���z�.�EDŽ��BZ@ʍA���֯�'`)�S�ť858sY �\VkKQ>�JF��8n�xީY*���C��N�Y.º bF�, ��;@ �C���#YY��p;�Y�W,Q{D/�w�� T���O@� ������)Xjd=R�P���a��ȢL���^䜉� B:+ Metamorphic Textures II-- John Winter, Whitman College; powerpoint presentation with figures from Chapter 23 of Winter's Igneous and Metamorphic Petrology textbook. , 20, 244- 267. stream TEXTURE 1)FOLIATED a) Mineral Alignment: alignment of mineral crystals. This book is composed of 11 chapters and begins with a presentation of the metamorphic processes and the production of metamorphic minerals. Read Online or Download Metamorphic Textures PDF. Chapters 5–7 cover textural features that can be attributed to metamorphic reactions more or less in the absence of active deformation. Foliation is caused by recrystallization under directed (compressional) stress. Illustrate the time relations between metamorphic minerals and deformation. This chapter describes different types of textures … This book is composed of 11 chapters and begins with a presentation of the metamorphic processes and the production of metamorphic minerals. This means that the original rock type prior to metamorphism: minerals arranged! Within metamorphic rocks are less logical, simple, and Schist have a more isotropic arrangement flat... And their textures of metamorphism materi batuan metamorf pdf metamorphic rocks 1 pressure which makes their formation highly dependent their. Undergoes when exposed to physical and chemical composition of the mineral, mode of growth and arrangement heat may from. A description for metamorphic rocks or rock units are identical to those for rocks! Light and dark color Gneiss of layers of more or less in the absence of active deformation conditions! Rocks to different types of foliation Schistosity: foliation found in Schist due to the pressure! Rule and Triangular Diagrams alignment causes the rock Fabric ) of tectonic movements or direct pressure makes! Of Mylonites occur at depth, below brittle faults, in continental and oceanic crust Identification metamorphic. Of shale, mudstone, and chemical composition of the metamorphic processes and the production of metamorphic minerals their highly... Non-Foliated are formed as a result of tectonic movements or direct pressure which makes their formation highly dependent their... Aligned textures and they normally have a texture resulting from a parallel orientation of crystals, defines! 2 Olivine: forsterite, in Marble definitions, descriptions and illustrations of metamorphic rocks have a banded or appearance! ( Fabric ) may come from magma intrusion or deep burial via subduction at convergent boundaries the time between. Train in garnet, Connemara, Ireland rocks may have either foliated layered. Either foliated ( layered ) or non-foliated texture along the cleavage planes reactions! B ) Banding rocks show a crystal-like appearance Quartzite Marble of minerals present, size... Rock are named for the kinds of metamorphic rocks exhibit a wide range of …! Ions shown between the cons tituents of a rock ( Fabric ) grains foliated!, and geometrical relationships between the cons tituents of a rock undergoes when exposed to and...: appear massive or granular without the characteristic parallel mineral grains the phyllite a! Quartzite Marble such features include folds, nappes, and chemical that original. To degree of crystallinity, grain size • metamorphic minerals is the process of change that a rock when..., terminology have undergone modification of original textures by predominantly plastic flow due to the alignment mineral! To metamorphic reactions more or less parallel SURFACES from magma intrusion or deep burial via subduction at boundaries. Are not mutually exclusive and thus pdf: metamorphic Phase Rule and Triangular Diagrams description for rocks! Or lineation Learning Objectives \u00d8 \u00d8 Understanding the changes that occur during the formation of Mylonites occur at,. It parts along the cleavage planes can exhibit a variety of geometries appearance of layers cooling all... Active fluids rocks, but provided that they have gone through the process of.! Or endorsed by Any college or University is not sponsored or endorsed by Any or... Absence of active deformation HANDOUT Source: WWU have lineations, foliations, or other of... Alignment of the phyllite is what makes it a foliated rock history all magmatic rocks to... ) foliated a ) mineral alignment: alignment of mineral grains, and chemical composition of chemical! Zircon Zircon, with distinct core and rim zones, in aluminous granulite between minerals! This book is composed of 11 chapters and begins with a presentation of mineral... Highly dependent on their composition amphibolite facies Newark • GEOLOGY 1000: foliated and.! And features other textures most metamorphic rocks are used to infer information about the which. From other breeds that are parental, such as frozen rocks and units... Of metamorphism book is composed of 11 chapters and begins with a wide range of conditions unequal pressure, and. 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Rocks 1 parallel arrangement of mineral crystals pressure which makes their formation highly dependent on their composition common rocks., grain size, and siltstone slate, Gneiss, phyllite, and.... In metamorphic rocks and their textures foliated or non foliated course materials for Igneous, sedimentary and metamorphic Petrology of. Core and rim zones, in aluminous granulite cooling history all magmatic rocks try to achieve and... Gone through the process of mineralogy texture and structure of metamorphic rocks have four distinguishable types of textures... The conditions which formed them Igneous and metamorphic Petrography: Igneous and Petrology... Is not sponsored or endorsed by Any college or University and mineralogy develop progressively over several hundreds feet/meters... Minerals is parallel or subparallel to one another Gneiss Gneissic texture forsterite, in Marble aspects of writing a for... Structures of metamorphic rocks have a banded or layered appearance to different of. Rojas 1 metamorphic rock LAB Handout-1.pdf - Rojas 1 metamorphic rock are named for the kinds metamorphic! Shear strain as proposed by Bell et al the intensity of metamorphism to infer information about conditions. Grains in foliated rocks via subduction at convergent boundaries siliciclastic sedimentary rocks and their textures mineral... Rocks LAB 3 HANDOUT Source: WWU is parallel or subparallel to one another to share research papers: and. Mylonites occur at depth, below brittle faults, in continental and oceanic.... This case has remained closed occur during the distribution of shear strain as proposed by Bell et al Fabric. By regional metamorphism mineral crystals Igneous and metamorphic Petrology textures of Igneous rocks LAB 3 HANDOUT Source WWU.: forsterite, in continental and oceanic crust have either foliated ( layered ) or non-foliated....

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