Rocks PPT
... Did you notice that the two pieces of granite on the last slide looked so different? This is because rocks lack a definite chemical make-up. This means that the combination of minerals in a certain kind of rock can be different. The amount of each mineral also varies greatly. On the other hand, a ce ...
... Did you notice that the two pieces of granite on the last slide looked so different? This is because rocks lack a definite chemical make-up. This means that the combination of minerals in a certain kind of rock can be different. The amount of each mineral also varies greatly. On the other hand, a ce ...
M.Sc. App. Geology - Pondicherry University
... Minerals, Longman Group Ltd., London, 696pp. 2. W.A. Deer, R. A. Howie and J. Zussmann, (1962-1982), Rock Forming Minerals (5 ...
... Minerals, Longman Group Ltd., London, 696pp. 2. W.A. Deer, R. A. Howie and J. Zussmann, (1962-1982), Rock Forming Minerals (5 ...
GEOL 463.3—RWR-6a SILICICLASTIC RESERVOIRS
... 2. Fluid properties — viscosity, pressure gradients, capillary force, etc. The two main types of porosity in siliciclastic rocks are primary (intra- and interparticle porosity) and secondary porosity. Secondary porosity in sandstones forms during diagenesis mainly by dissolution of grains and cement ...
... 2. Fluid properties — viscosity, pressure gradients, capillary force, etc. The two main types of porosity in siliciclastic rocks are primary (intra- and interparticle porosity) and secondary porosity. Secondary porosity in sandstones forms during diagenesis mainly by dissolution of grains and cement ...
Latest Cretaceous basin formation within the Salinian terrane of
... and Junipero Serra Peak, stratigraphic columns were built for further analysis of the Salinian terrane. The Salinian strata were deposited in the Maastrichtian time, although late Campanian ages have also been discovered, however these times are inconclusive due to the lack of marker beds such as tu ...
... and Junipero Serra Peak, stratigraphic columns were built for further analysis of the Salinian terrane. The Salinian strata were deposited in the Maastrichtian time, although late Campanian ages have also been discovered, however these times are inconclusive due to the lack of marker beds such as tu ...
Lab 1: Optical Properties of common rock forming minerals
... minerals in igneous rocks can be of igneous origin (e.g. hornblende formed by the deuteric alteration of pyroxene), many are not, and may form by weathering or hydrothermal alteration after the formation of the rock (e.g. calcite, chlorite, sericite, kaolinite... etc). Mineral Modes: The classificat ...
... minerals in igneous rocks can be of igneous origin (e.g. hornblende formed by the deuteric alteration of pyroxene), many are not, and may form by weathering or hydrothermal alteration after the formation of the rock (e.g. calcite, chlorite, sericite, kaolinite... etc). Mineral Modes: The classificat ...
Coosa County
... Gneiss – a coarse-textured complex metamorphic rock. Gneiss is a type of rock with a great variety of large mineral grains arranged in wide bands which originally may have been of either igneous or sedimentary origin. Common and widely distributed, it makes up the largest part of the earth's lower ...
... Gneiss – a coarse-textured complex metamorphic rock. Gneiss is a type of rock with a great variety of large mineral grains arranged in wide bands which originally may have been of either igneous or sedimentary origin. Common and widely distributed, it makes up the largest part of the earth's lower ...
Metamorphic Rock
... The figure on the next page shows how one kind of foliated rock, gneiss, can form. Gneiss may start out as the sedimentary rock shale. Heat and pressure can change shale to slate, phyllite, schist, or gneiss. ...
... The figure on the next page shows how one kind of foliated rock, gneiss, can form. Gneiss may start out as the sedimentary rock shale. Heat and pressure can change shale to slate, phyllite, schist, or gneiss. ...
Note Packet
... the rock through which it cuts. Simply put, the body of rock that is cross-cut had to be there first in order to be cut by an intruding igneous body or fault. In general rock is always ____________________ than the process that changed it. Some processes include: _______________________, ___________ ...
... the rock through which it cuts. Simply put, the body of rock that is cross-cut had to be there first in order to be cut by an intruding igneous body or fault. In general rock is always ____________________ than the process that changed it. Some processes include: _______________________, ___________ ...
pendahuluan
... 2. Whether or not the rock has holes, or vesicles, in it. A rock with lots of vesicles has a vesicular texture. Vesicles are signs of gas bubbles in the lava as it was erupting and cooling; some vesicular rocks actually float on water. 3. Whether the rock is formed from a coherent mass of mineral gr ...
... 2. Whether or not the rock has holes, or vesicles, in it. A rock with lots of vesicles has a vesicular texture. Vesicles are signs of gas bubbles in the lava as it was erupting and cooling; some vesicular rocks actually float on water. 3. Whether the rock is formed from a coherent mass of mineral gr ...
Mt. Ciremai (Irawan, et.al, 2006)
... 2. Whether or not the rock has holes, or vesicles, in it. A rock with lots of vesicles has a vesicular texture. Vesicles are signs of gas bubbles in the lava as it was erupting and cooling; some vesicular rocks actually float on water. 3. Whether the rock is formed from a coherent mass of mineral gr ...
... 2. Whether or not the rock has holes, or vesicles, in it. A rock with lots of vesicles has a vesicular texture. Vesicles are signs of gas bubbles in the lava as it was erupting and cooling; some vesicular rocks actually float on water. 3. Whether the rock is formed from a coherent mass of mineral gr ...
PDF file
... of the lowest part of the plate to become molten magma that then rose, if at all, only some way up through faults before getting stuck and cooling to become granite (a thick-grained ‘rhyolitic’ rock). The heat also ‘cooked’ some of the rocks causing chemical changes, and the enormous pressures gener ...
... of the lowest part of the plate to become molten magma that then rose, if at all, only some way up through faults before getting stuck and cooling to become granite (a thick-grained ‘rhyolitic’ rock). The heat also ‘cooked’ some of the rocks causing chemical changes, and the enormous pressures gener ...
Metamorphism and Metamorphic Rocks Metamorphism is defined
... Metamorphism is defined as the mineralogical and structural adjustment of solid rock to physical conditions different from original conditions of formation (exclude weathering and diagenesis) but conditions less rigorous than for melting. The term metamorphism comes from the Greek "meta" = change an ...
... Metamorphism is defined as the mineralogical and structural adjustment of solid rock to physical conditions different from original conditions of formation (exclude weathering and diagenesis) but conditions less rigorous than for melting. The term metamorphism comes from the Greek "meta" = change an ...
Metamorphic Rocks and the Creation of Gemstones
... Metamorphosis literally means “a change in form” and metamorphic rocks can be dramatically changed by earth’s heat and pressure. Any preexisting rock may be distorted and changed into a new rock called a metamorphic rock. Metamorphic rocks are not melted as they form (that would be igneous), and cha ...
... Metamorphosis literally means “a change in form” and metamorphic rocks can be dramatically changed by earth’s heat and pressure. Any preexisting rock may be distorted and changed into a new rock called a metamorphic rock. Metamorphic rocks are not melted as they form (that would be igneous), and cha ...
Metamorphism - Bakersfield College
... alteration caused when hot, ion-rich fluids, called hydrothermal solutions, circulate through fissures and cracks that develop in rock Most widespread along the axis of the mid-ocean ridge system ...
... alteration caused when hot, ion-rich fluids, called hydrothermal solutions, circulate through fissures and cracks that develop in rock Most widespread along the axis of the mid-ocean ridge system ...
Metamorphic Rocks
... Occurs where both high temperature and high pressure are imposed over large belts of the crust Destroys all original sedimentary or igneous textures through growth of new minerals Occurs in deeper levels of the crust along convergent plate boundaries particularly continental-continental boundaries w ...
... Occurs where both high temperature and high pressure are imposed over large belts of the crust Destroys all original sedimentary or igneous textures through growth of new minerals Occurs in deeper levels of the crust along convergent plate boundaries particularly continental-continental boundaries w ...
Field Trip Questions
... STOP 5 Shawangunk Formation. In New York State the shale and siltstone facies of the middle to late Ordovician Martinsburg Formation (the dark shales and slates we just passed on Route 80) can be seen to form an angular unconformity with the overlying Shawangunk Formation. This means that some _____ ...
... STOP 5 Shawangunk Formation. In New York State the shale and siltstone facies of the middle to late Ordovician Martinsburg Formation (the dark shales and slates we just passed on Route 80) can be seen to form an angular unconformity with the overlying Shawangunk Formation. This means that some _____ ...
Lecture 9 - Intro. to Metam. Rocks
... are used to define ranges of P-T conditions. We will discuss metamorphic facies later. However, names are also given to metamorphic rocks that may be indicative of their morphology, mineralogy, or bulk chemical composition. 1. Structural (morphological) classification Hornfels - non-schistose, fine- ...
... are used to define ranges of P-T conditions. We will discuss metamorphic facies later. However, names are also given to metamorphic rocks that may be indicative of their morphology, mineralogy, or bulk chemical composition. 1. Structural (morphological) classification Hornfels - non-schistose, fine- ...
Rocks and Minerals of Everest
... rock-forming minerals such as staurolite, muscovite, biotite, plagioclase, chlorite and sometimes andalusite. Metamorphic rocks are derived (metamorphosed) from preexisting rocks through heat, pressure, and chemically active solutions. The preexisting rock (protolith) of schist is mudrock or shale, ...
... rock-forming minerals such as staurolite, muscovite, biotite, plagioclase, chlorite and sometimes andalusite. Metamorphic rocks are derived (metamorphosed) from preexisting rocks through heat, pressure, and chemically active solutions. The preexisting rock (protolith) of schist is mudrock or shale, ...
Mineral Review Guide
... Mineral Review Guide Know these terms and concepts. Be prepared to explain or give examples when needed. 1. How are minerals grouped? 2. Silicates make up what % of the rocks in Earth’s crust? 3. Element 4. Carbonates 5. Oxides 6. Silicates 7. Which group is the most common group of rock-forming mi ...
... Mineral Review Guide Know these terms and concepts. Be prepared to explain or give examples when needed. 1. How are minerals grouped? 2. Silicates make up what % of the rocks in Earth’s crust? 3. Element 4. Carbonates 5. Oxides 6. Silicates 7. Which group is the most common group of rock-forming mi ...
Answer Key
... 18. You would not find many—or any—fossils where you live because fossils are usually found in sedimentary rock, not metamorphic rock. (Occasionally, fossils are preserved in metamorphic rock that was once sedimentary rock.) 19. The property with the batholith would be a better buy because batholith ...
... 18. You would not find many—or any—fossils where you live because fossils are usually found in sedimentary rock, not metamorphic rock. (Occasionally, fossils are preserved in metamorphic rock that was once sedimentary rock.) 19. The property with the batholith would be a better buy because batholith ...
LAB # 5 - GEOLOGIC MAPS AND STRUCTURES
... these features, we may define several types of folds. Monoclines are folds which exhibit local steepening of otherwise uniform dips. Anticlines are folds in which the limbs dip away from one another and away from the fold axis. On geologic maps, anticlines often form elongate bullseye-like features ...
... these features, we may define several types of folds. Monoclines are folds which exhibit local steepening of otherwise uniform dips. Anticlines are folds in which the limbs dip away from one another and away from the fold axis. On geologic maps, anticlines often form elongate bullseye-like features ...
Sedimentary rock
Sedimentary rocks are types of rock that are formed by the deposition of material at the Earth's surface and within bodies of water. Sedimentation is the collective name for processes that cause mineral and/or organic particles (detritus) to settle and accumulate or minerals to precipitate from a solution. Particles that form a sedimentary rock by accumulating are called sediment. Before being deposited, sediment was formed by weathering and erosion in a source area, and then transported to the place of deposition by water, wind, ice, mass movement or glaciers which are called agents of denudation.The sedimentary rock cover of the continents of the Earth's crust is extensive, but the total contribution of sedimentary rocks is estimated to be only 8% of the total volume of the crust. Sedimentary rocks are only a thin veneer over a crust consisting mainly of igneous and metamorphic rocks. Sedimentary rocks are deposited in layers as strata, forming a structure called bedding. The study of sedimentary rocks and rock strata provides information about the subsurface that is useful for civil engineering, for example in the construction of roads, houses, tunnels, canals or other structures. Sedimentary rocks are also important sources of natural resources like coal, fossil fuels, drinking water or ores.The study of the sequence of sedimentary rock strata is the main source for scientific knowledge about the Earth's history, including palaeogeography, paleoclimatology and the history of life. The scientific discipline that studies the properties and origin of sedimentary rocks is called sedimentology. Sedimentology is part of both geology and physical geography and overlaps partly with other disciplines in the Earth sciences, such as pedology, geomorphology, geochemistry and structural geology.