Chapter 7 Lecture PowerPoint Handout
... Agents of Metamorphism • The importance of parent rock– Most metamorphic rocks have the same overall chemical composition as the parent rock from which they formed – Mineral makeup determines, to a large extent, the degree to which each metamorphic agent will cause change ...
... Agents of Metamorphism • The importance of parent rock– Most metamorphic rocks have the same overall chemical composition as the parent rock from which they formed – Mineral makeup determines, to a large extent, the degree to which each metamorphic agent will cause change ...
Fossils - Our eclass community
... dating, is based on any event which occurs at a constant rate or is repeated at regular intervals and is measurable. e.g. Tree ring dating ...
... dating, is based on any event which occurs at a constant rate or is repeated at regular intervals and is measurable. e.g. Tree ring dating ...
Mature vs. Immature Sandstone
... grains distinguish the source area and rock type. It also correlates with the amount of transport and erosion the sediments encounter. Mature sandstones can be found far from the source area. The amount of transport and weathering has formed rounded, well-sorted grain sediments. The minerals found i ...
... grains distinguish the source area and rock type. It also correlates with the amount of transport and erosion the sediments encounter. Mature sandstones can be found far from the source area. The amount of transport and weathering has formed rounded, well-sorted grain sediments. The minerals found i ...
ag 2211 applied geology
... (chemical and mechanical processes that reduce rocks to particles). Erosion moves particles into rivers and oceans where they are deposited to become sedimentary rocks. Sedimentary rocks can be buried or pushed to deeper levels in the Earth, where changes in pressure and temperature cause them to be ...
... (chemical and mechanical processes that reduce rocks to particles). Erosion moves particles into rivers and oceans where they are deposited to become sedimentary rocks. Sedimentary rocks can be buried or pushed to deeper levels in the Earth, where changes in pressure and temperature cause them to be ...
Glossary of Terms Related to Prospecting and Exploration
... A gold (and/or silver) deposit that forms at shallow depth in the earth's crust, typically less than 1 km from the surface (a depth of 1000 m may not sound shallow, but it is, relative to many other types of subterranean mineral forming processes). Epithermal deposits form in hydrothermal systems th ...
... A gold (and/or silver) deposit that forms at shallow depth in the earth's crust, typically less than 1 km from the surface (a depth of 1000 m may not sound shallow, but it is, relative to many other types of subterranean mineral forming processes). Epithermal deposits form in hydrothermal systems th ...
DOWNLOAD A5 40 pages
... completely new minerals as atoms move around; the latter change is limited by which elements are available. Most are crammed together and so crystallise anhedrally (p5). (2) Under pressure the rock often develops layers, called Foliation, as similar minerals gather together. In gneiss, the rock beco ...
... completely new minerals as atoms move around; the latter change is limited by which elements are available. Most are crammed together and so crystallise anhedrally (p5). (2) Under pressure the rock often develops layers, called Foliation, as similar minerals gather together. In gneiss, the rock beco ...
Terrigenous Sediments - Lamont
... clays are formed as weathering or alteration products of primary silicate minerals, and others are recycled from sedimentary sources. All clay minerals are very fine-grained due to their crystal structure. Four types of clays are dominantly found in marine sediments: chlorite, illite, kaolinite, and ...
... clays are formed as weathering or alteration products of primary silicate minerals, and others are recycled from sedimentary sources. All clay minerals are very fine-grained due to their crystal structure. Four types of clays are dominantly found in marine sediments: chlorite, illite, kaolinite, and ...
Full text
... I will begin by stating that I like this book. The book is really all about recognizing and interpreting textures of metamorphic rocks and it succeeds with abundant high-quality outcrop photographs, photomicrographs, and illustrations. I am sure this book will be a helpful supplement for many studen ...
... I will begin by stating that I like this book. The book is really all about recognizing and interpreting textures of metamorphic rocks and it succeeds with abundant high-quality outcrop photographs, photomicrographs, and illustrations. I am sure this book will be a helpful supplement for many studen ...
8-3.4b - S2TEM Centers SC
... Sample 7 - Granite - Light-colored intrusive igneous rock. It came from magma deep within the earth and cooled before it reached the surface. Place dot on or next to the volcano where "intrusive igneous rocks" are shown. Sample 8 - Gabbro - Dark-colored intrusive igneous rock. It has a higher iron c ...
... Sample 7 - Granite - Light-colored intrusive igneous rock. It came from magma deep within the earth and cooled before it reached the surface. Place dot on or next to the volcano where "intrusive igneous rocks" are shown. Sample 8 - Gabbro - Dark-colored intrusive igneous rock. It has a higher iron c ...
Chapter 4: Origin and Evolution of Igneous Rocks
... • Magma changes in temperature, viscosity, volatile content, and composition as it is transported toward the surface, mixes with other magmas, assimilates surrounding rock, and fractionates. • Eruption styles and volcanic structures are related to lava chemistry. • Mafic lavas generally result in ge ...
... • Magma changes in temperature, viscosity, volatile content, and composition as it is transported toward the surface, mixes with other magmas, assimilates surrounding rock, and fractionates. • Eruption styles and volcanic structures are related to lava chemistry. • Mafic lavas generally result in ge ...
Sedimentary Petrology 2 - Makerere University Courses
... Course Credit: 2 CU Description: The course introduces the student to the different geological aspects of sediments and sedimentary rocks including classification, composition, textures, structures, genesis and sedimentary environments. Course Objectives At the end of this course students should be ...
... Course Credit: 2 CU Description: The course introduces the student to the different geological aspects of sediments and sedimentary rocks including classification, composition, textures, structures, genesis and sedimentary environments. Course Objectives At the end of this course students should be ...
1. Obsidian is a dark, glassy rock that is formed when lava cools
... 1. Obsidian is a dark, glassy rock that is formed when lava cools quickly. It is usually black, but it can also be red, brown, and white specked (snowflake). Obsidian has been used as an arrowhead, a cutting tool, and in jewelry. One of the places where obsidian is found in is the Black Rock Desert ...
... 1. Obsidian is a dark, glassy rock that is formed when lava cools quickly. It is usually black, but it can also be red, brown, and white specked (snowflake). Obsidian has been used as an arrowhead, a cutting tool, and in jewelry. One of the places where obsidian is found in is the Black Rock Desert ...
Test 3, 2nd Quarter: Rocks
... c. The expansion and release of hot gases as the rock is cooling d. Parts of the rock dissolving after it forms e. None of the above 14. An igneous rock that cools in two stages – a slow stage forming large crystals and then a faster stage forming very small crystals – is said to have a ____________ ...
... c. The expansion and release of hot gases as the rock is cooling d. Parts of the rock dissolving after it forms e. None of the above 14. An igneous rock that cools in two stages – a slow stage forming large crystals and then a faster stage forming very small crystals – is said to have a ____________ ...
Chapter_1_Revised - Earth and Space Science GIS and stuff
... atmosphere over and through which water circulates. How water moves down slopes and through the subsurface to collect in streams affects both weathering and erosional processes. Overland flow in which rainfall simply runs off across the land surface after striking the ground is rare in humid and tem ...
... atmosphere over and through which water circulates. How water moves down slopes and through the subsurface to collect in streams affects both weathering and erosional processes. Overland flow in which rainfall simply runs off across the land surface after striking the ground is rare in humid and tem ...
47 In nature there is a wide variety of sedimentary rocks and each
... relatively unstable. However, clay minerals, dominated by kaolinite, illite and montmorillonite, and insoluble oxides, including hematite, bauxite, laterite, and gibbsite, are generally very stable. The exact composition of detrital grains produced by weathering will depend on the relative importanc ...
... relatively unstable. However, clay minerals, dominated by kaolinite, illite and montmorillonite, and insoluble oxides, including hematite, bauxite, laterite, and gibbsite, are generally very stable. The exact composition of detrital grains produced by weathering will depend on the relative importanc ...
Deformation of the Crust - Mrs. Severe
... to its original shape as the force is removed • If the force exceeds an acceptable amount, the shape of the rock changes permanently • Rock may also break because of extreme stress ...
... to its original shape as the force is removed • If the force exceeds an acceptable amount, the shape of the rock changes permanently • Rock may also break because of extreme stress ...
Ch 21 22 Intro Metam and Classif mod 8
... Figure 22-1. Examples of foliated metamorphic rocks. a. Slate. b. Phyllite. Note the difference in reflectance on the foliation surfaces between a and b: phyllite is characterized by a satiny sheen. Winter (2001) An Introduction to Igneous and Metamorphic Petrology. ...
... Figure 22-1. Examples of foliated metamorphic rocks. a. Slate. b. Phyllite. Note the difference in reflectance on the foliation surfaces between a and b: phyllite is characterized by a satiny sheen. Winter (2001) An Introduction to Igneous and Metamorphic Petrology. ...
Library List - the Helena Mineral Society
... “ The Nature of Earth, An Introduction to Geology” By Prof. John J. Renton Part 1 (Two DVDs but second in this one is missing) Part2 (Both DVDs are in the case) Part 3 (Both DVDs are in the case) “Wire Wrap - A Hands on Workshop By Lesley Moussette No DVD numbered “Rhodochrosite-Red Treasure of the ...
... “ The Nature of Earth, An Introduction to Geology” By Prof. John J. Renton Part 1 (Two DVDs but second in this one is missing) Part2 (Both DVDs are in the case) Part 3 (Both DVDs are in the case) “Wire Wrap - A Hands on Workshop By Lesley Moussette No DVD numbered “Rhodochrosite-Red Treasure of the ...
Chapter 9. Sedimentary Rocks
... grains, and accumulate where two grains are touching. Over time the minerals (called cement) bind the grains together. Quartz and calcite are common cement minerals, but depending on pressure, temperature, and chemical conditions, cement might also include other minerals such as hematite and clay. F ...
... grains, and accumulate where two grains are touching. Over time the minerals (called cement) bind the grains together. Quartz and calcite are common cement minerals, but depending on pressure, temperature, and chemical conditions, cement might also include other minerals such as hematite and clay. F ...
Sedimentary Rocks
... Characteristics of Sedimentary Rocks May stratified because the sediments are laid down in horizontal layers called strata. ( one layer is called stratum) May also contain fossil i.e: remains, prints or other indications of plants & animals found buried in rocks ...
... Characteristics of Sedimentary Rocks May stratified because the sediments are laid down in horizontal layers called strata. ( one layer is called stratum) May also contain fossil i.e: remains, prints or other indications of plants & animals found buried in rocks ...
A field guide to the geology of the Castle Hill Basin
... which is a highly reactive compound. All it takes is for a reaction involving the combination of atmospheric carbon dioxide and rainwater - the result is solution of carbonic acid which despite being very weak, is still acid enough to slowly and progressively dissolve limestone, H2O + CO2 = H2CO3 Wh ...
... which is a highly reactive compound. All it takes is for a reaction involving the combination of atmospheric carbon dioxide and rainwater - the result is solution of carbonic acid which despite being very weak, is still acid enough to slowly and progressively dissolve limestone, H2O + CO2 = H2CO3 Wh ...
Weathering
Weathering is the breaking down of rocks, soil and minerals as well as artificial materials through contact with the Earth's atmosphere, biota and waters. Weathering occurs in situ, roughly translated to: ""with no movement"" , and thus should not be confused with erosion, which involves the movement of rocks and minerals by agents such as water, ice, snow, wind, waves and gravity and then being transported and deposited in other locations.Two important classifications of weathering processes exist – physical and chemical weathering; each sometimes involves a biological component. Mechanical or physical weathering involves the breakdown of rocks and soils through direct contact with atmospheric conditions, such as heat, water, ice and pressure. The second classification, chemical weathering, involves the direct effect of atmospheric chemicals or biologically produced chemicals also known as biological weathering in the breakdown of rocks, soils and minerals. While physical weathering is accentuated in very cold or very dry environments, chemical reactions are most intense where the climate is wet and hot. However, both types of weathering occur together, and each tends to accelerate the other. For example, physical abrasion (rubbing together) decreases the size of particles and therefore increases their surface area, making them more susceptible to rapid chemical reactions. The various agents act in concert to convert primary minerals (feldspars and micas) to secondary minerals (clays and carbonates) and release plant nutrient elements in soluble forms.The materials left over after the rock breaks down combined with organic material creates soil. The mineral content of the soil is determined by the parent material, thus a soil derived from a single rock type can often be deficient in one or more minerals for good fertility, while a soil weathered from a mix of rock types (as in glacial, aeolian or alluvial sediments) often makes more fertile soil. In addition, many of Earth's landforms and landscapes are the result of weathering processes combined with erosion and re-deposition.