rocks metamorphic rocks and age determination

... rocks • absolute age dating • determination of amounts of radioactive parent and stable daughter Relative Age dating SED-MET ROCKS- AGE • Age determination method • relative and absolute age determination ... sculpturing material SED-MET ROCKS- AGE • Age determination (geologic age) • important concepts used • relative age concepts • crosscutting and intrusive nature of igneous rocks • law of superposition ... biological rocks SED-MET ROCKS- AGE BIOLOGICAL OR ORGANIC ROCKS SED-MET ROCKS- AGE White Cliffs of Dover COAL SERIES buried plants Peat bituminous lignite anthracite methane coal gas SED-MET ROCKS- AGE...

Ngày tải lên: 30/11/2016, 15:37

... mineral assemblages that characterize each facies (for mafic rocks) Table 25-1 Definitive Mineral Assemblages of Metamorphic Facies Facies Definitive Mineral Assemblage in Mafic Rocks Zeolite ... concept • A metamorphic facies is then a set of repeatedly associated metamorphic mineral assemblages • If we find a specified assemblage (or better yet, a group of compatible assemblages covering ... gradational The “typical” or average continental geotherm is from Brown and Mussett (1993) Winter (2010) An Introduction to Igneous and Metamorphic Petrology Prentice Hall Metamorphic Facies Table 25.1...

Ngày tải lên: 14/11/2014, 16:38

... recrystallize into stable ones • Rocks produced from pre-existing or parent rocks in this way are called metamorphic rocks bread toast Metamorphic Rocks • Metamorphic rocks common in the old, stable ... depleted) Factors Controlling Metamorphic Rock Characteristics • Texture and mineral content of metamorphic rocks depend on: – – – – Parent rock composition Temperature and pressure Effects of tectonic ... Hydrothermal processes add water for metamorphic reactions • Formation of hydrothermal rocks • Water passes through rocks and precipitates new minerals on walls of cracks and in pore spaces • Metallic...

Ngày tải lên: 30/11/2016, 15:34

... Metamorphic rocks are nicknamed “Changing Rocks Why? How Metamorphic rocks form? From heat & pressure deep inside Earth Metamorphic rocks can form from Igneous, Sedimentary, or other Metamorphic ... Sedimentary, or other Metamorphic rocks as they are pushed down toward the heat of the mantle 2 Types of Metamorphic Rock Foliated “Banded” Nonfoliated “Nonbanded” Foliated Metamorphic Rock • Def: Grains ... Quartzite Original Rock  New Metamorphic Rock Sandstone Quartzite When Sandstone (Sedimentary) is under extreme heat & pressure, Quartzite will form Uses of Metamorphic Rocks • Slate: Old fashioned...

Ngày tải lên: 30/11/2016, 16:08

... Metamorphism, Metamorphic Rocks, and Hydrothermal Rocks Physical Geology 10/e, Chapter Steve Kadel, Glendale Community College Metamorphic Rocks • Metamorphism refers to solid-state changes to rocks ... conditions, recrystallize into stable ones • Rocks produced from pre-existing or parent rocks in this way are called metamorphic rocks • Metamorphic rocks common in the old, stable cores of continents, ... cratons Factors Controlling Metamorphic Rock Characteristics • Texture and mineral content of metamorphic rocks depend on: – – – – Parent rock composition Temperature and pressure during metamorphism...

Ngày tải lên: 30/11/2016, 16:19

... stable ones • Rocks produced from pre-existing or parent rocks in this way are called metamorphic rocks • Metamorphic rocks common in the old, stable cores of continents, known as cratons Metamorphic ... Processes 1) Factors Controlling Metamorphic Rock Characteristics • Texture and mineral content of metamorphic rocks depend on: – – – – Parent rock composition Temperature and pressure during metamorphism ... hydrothermal rocks • Water passes through rocks and precipitates new minerals on walls of cracks and in pore spaces • Metallic ore deposits often form this way (veins) 3) Plate Tectonics and Metamorphism...

Ngày tải lên: 30/11/2016, 16:20

... http://www.lonelyplanet.com/mapshells/europe/scottish_highlands _and_ islands/scottish_highlands _and_ islands.htm http://www.clan-mackenzie.co.uk/graphics/highl Scottish Highlands http://www.scotland.de/photos/073l Scottish Highlands http://www.kentleton.evesham.net/Photo/03/0 ... http://www2002.stoke.gov.uk/museums/pmag/Nof_website1/natural_history_static_exhibitions/identifying_rock_minerals _and Barrovian Metamorphism Amphibolite Schist http://www2.vscc.cc.tn.us/svinson/geo100/library /metamorphic/ large/amphibolite.jpg Measuring Metamorphic Intensity Zones and Facies Metamorphic rocks ... Cleavage ty a l S e g a v a e cl Slaty Cleavage Foliated Textures Slaty Cleavage http://www.env.duke.edu/eos/geo41/ims2.htm http://www.accd.edu/sac/EARTHSCI/1301.090/Lecture%2 Slaty Cleavage and...

Ngày tải lên: 30/11/2016, 16:35

... stable ones • Rocks produced from pre-existing or parent rocks in this way are called metamorphic rocks • Metamorphic rocks common in the old, stable cores of continents, known as cratons Metamorphic ... Processes 1) Factors Controlling Metamorphic Rock Characteristics • Texture and mineral content of metamorphic rocks depend on: – – – – Parent rock composition Temperature and pressure during metamorphism ... hydrothermal rocks • Water passes through rocks and precipitates new minerals on walls of cracks and in pore spaces • Metallic ore deposits often form this way (veins) 3) Plate Tectonics and Metamorphism...

Ngày tải lên: 30/11/2016, 16:36

... lunar displays managed and approved by the Exhibits Manager through Johnson’s Public Affairs Office Figure Management and Distribution of Astromaterials for Research, Education, and Public Display ... Office of Financial Management and Assurance Director, NASA Issues, Office of Acquisition and Sourcing Management Congressional Committees and Subcommittees, Chairman and Ranking Member Senate ... Commerce, Justice, Science, and Related Agencies Senate Committee on Commerce, Science, and Transportation Subcommittee on Science and Space Senate Committee on Homeland Security and Governmental Affairs...

Ngày tải lên: 18/02/2014, 05:20

... days and three nights, and the Britons were victorius Year 93: The strife of Camlann in which Arthur and Medraut perished, and there was plague in Britain and in Ireland Although these ages appear ... graze and get eaten Photosynthesis fixes carbon in water plants (lakes and oceans) Carbon fixed into lake and ocean sediments Plants and animals excrete and then die: carbon fed into soils, lakes and ... defeating the Saxons and creating a prosperous kingdom He 14 B ONES, ROCKS AND STARS forms the knights of the Round Table which includes Sir Lancelot, Gawain and Galahad Peace and prosperity reign...

Ngày tải lên: 08/04/2014, 01:24

... had an age between minimum and maximum 16 years for girls, and minimum and maximum 17 years for boys Average age was 13.52 years (range, 917) and 13.97 years (range, 9.1-17) for group1 and 2, ... average chronological age and skeletal age were with their standard deviations in both groups as described in table and 2, respectively Little and Sussman [9]used TW2 method for skeletal age ... sign and skeletal age assessment Results Table shows average chronological and TW3 skeletal age, and numbers of patients having Risser staging to respectively in group1 along with their average...

Ngày tải lên: 20/06/2014, 04:20

... www.britannica.com Rocks and Minerals Contents Dynamics of the Earth's Crust Page Minerals Page 18 Formation and Transformation of Rocks Page 40 Classes of Rocks Page 60 Use of Rocks and Minerals Page 76 ... fossils Central and South America 103.5 Europe and Eurasia 140.5 Africa 114.3 Middle East 742.7 Asia Pacific 40.2 ROCKS AND MINERALS 73 72 CLASSES OF ROCKS Common Metamorphic Rocks Marble and Quartzite ... certain rocks 78 USE OF ROCKS AND MINERALS ROCKS AND MINERALS 79 In Daily Life Metals t is impossible to conceive of modern life without the constant use of objects and materials made of rocks and...

Ngày tải lên: 11/08/2014, 16:26

... Some rocks are shiny and hard Some rocks are dull and fibrous Feldspar Hundreds of different kinds of rocks exist, and they’re everywhere In fact, rocks make up Earth itself But what makes up rocks? ... kinds of rocks: metamorphic, igneous, and sedimentary These words describe how rocks form Geologists (people who study Earth and its rocks and minerals) use them to identify all the rocks in ... that causes metamorphic, sedimentary, and igneous rocks to form sedimentary rocks: Rocks that form when bits and pieces, or sediments, from other rocks or mineral solids build up and harden over...

Ngày tải lên: 29/10/2014, 13:07

... Different rocks have different colors Different rocks feel different Some are smooth and others are rough Some rocks are small and light You can hold these rocks in your hand Other rocks are ... turns big rocks into small rocks It also turns small rocks into sand Weathering also turns small rocks into soil Soil is full of weathered rock and other things It has pieces of leaves and twigs ... break the rock apart The roots of plants can weather rocks Weathering turns big rocks into smaller rocks It turns smaller rocks into gravel and sand More Causes of Weathering Look at the inside of...

Ngày tải lên: 31/10/2014, 14:39

... weather rocks Water can flow into cracks in rocks When it freezes, the rocks break apart Plants can also cause weathering Their roots can grow into cracks and break rocks apart Small rocks Gravel Sand ... in caves 10 Some rocks have iron in them The iron can mix with air when the rocks get wet Rust forms on the rocks The rocks turn reddish brown The rust weakens the rocks The rocks may break apart ... Natural Resources Rocks are a natural resource We use rocks to build things We can mix rocks with sand, cement, and water This makes concrete Concrete is used for roads, sidewalks, and steps Wood...

Ngày tải lên: 31/10/2014, 14:47

... are rocks and minerals? 10 How rocks are formed 12 Weathering and erosion 14 Rocks on the seashore 16 Igneous rocks 18 Volcanic rocks 20 Sedimentary rocks 22 Limestone caves 24 Metamorphic rocks ... desert sandstone from Scotland Transport Deposition Heat and pressure METAMORPHIC ROCKS Quartz veins stand out in this schist rock face in Scotland The area contains many metamorphic rocks Sedimentary ... (copper sulfate) and formed from copper-rich waters in a mine Rocks and minerals occur in many different forms Rocks not necessarily have to be hard and resistant; loose sand and wet clay are...

Ngày tải lên: 20/06/2015, 08:43

... between 20 and 50% ferromagnesian minerals (usually pyroxene and amphibole) Examples are diorite (intrusive), and andesite (extrusive)3 Mafic rocks are dominated by plagioclase feldspar and ferromagnesian ... are termed ultramafic Felsic and intermediate rocks are also known as SIALIC - which refers to the predominance of silica and alumina, while mafic and ultramafic rocks are known as SIMATIC - ... equidimensional and irregular Various types of plutons are shown on Figures 4.28, 4.29 and 4.30 in the text Plutonic rocks are always intruded into pre-existing sedimentary, igneous or metamorphic rocks...

Ngày tải lên: 01/12/2015, 23:14

... Gravel and cobbles Conglomerate Sand Sandstone Silt and clay Shale Calcium carbonate Limestone Calcium sulfate Gypsum Sodium chloride Halite Metamorphic Rock • -formed from preexisting rocks ... preexisting rocks (igneous, sedimentary, or other metamorphic) • metamorphic means “changing in form” • marble and slate are common examples Metamorphic Rock • Foliated • Elongated minerals ... to metamorphic gneiss • Nonfoliated • Smooth, solid homogenous blend of minerals in rock • H & P recrystallizes rock • Igneous limestone to metamorphic marble Metamorphic Rock Original Rock Metamorphic...

Ngày tải lên: 30/11/2016, 11:19

... preexisting rocks – typical chemicals include silica and calcium carbonate METAMORPHIC ROCKS • METAMORPHISM : process by which conditions within the Earth alter the mineral content and structure ... IDENTIFICATION OF IGNEOUS ROCKS • IDENTIFICATION PROCESSES: – TEXTURE: • Size, shape and manner of growth of individual crystals – MINERAL COMPOSITION • Based on SiO content COMMON IGNEOUS ROCKS • GRANITE: ... into new rocks CLASSIFYING SEDIMENTARY ROCKS THREE SOURCES • Detrital (or clastic) sediment is composed of transported solid fragments (or detritus) of pre-existing igneous, sedimentary or metamorphic...

Ngày tải lên: 30/11/2016, 13:58

... animal Metamorphic Rocks and the Rock Cycle Metamorphic Rocks • New rocks that form when existing rocks are heated or squeezed but are not melted are called metamorphic (me tuh MOR fihk) rocks Metamorphic ... Igneous and Sedimentary Rocks Rocks from Lava • Extrusive igneous rocks can form in two ways Igneous and Sedimentary Rocks Rocks from Lava • In one way, volcanoes erupt and shoot out lava and ash ... Many foliated rocks have bands of differentcolored minerals Metamorphic Rocks and the Rock Cycle Types of Changed Rocks • Nonfoliated rocks not have distinct layers or bands • These rocks, such...

Ngày tải lên: 30/11/2016, 14:03