Types of Rocks And The Rock Cycle PDF

Summary

This document provides information about different types of rocks, including igneous, sedimentary, and metamorphic rocks. It details the rock cycle and how rock types are formed and transformed. It also includes questions to prompt further research and study.

Full Transcript

Q&A Additional Additional Cycle Types You Rock! Objectives And The Rock Cy...

Q&A Additional Additional Cycle Types You Rock! Objectives And The Rock Cycle Types of Rocks Q&A Additional What will you learn? Additional Identify and describe Understand the three basic rock types The different geologic processes involved in rock formation Cycle Establish Understand Relationships between rock The importance of the different Types types and their mode of ways on how the mineral deposits origin and environments of are formed. deposit/formation You Rock! Objectives Q&A You Rock! Collect 10 rock samples from your garden or yard. Using a Additional magnifying glass, observe the rocks. Create a grouping of the rocks based on your observation. Label your rock samples as samples 1-10. Additional Data Table Rock Observed Rock Observed Sample properties/characteristics Sample properties/characteristics Cycle 1 6 2 7 3 8 Types 4 9 5 10 You Rock! Guide Questions: 1. How many groups did you form for your collected samples of rocks? 2. What basis of grouping or classification did you use? Objectives 3. Can you describe the common features of each group? “Earth Science for STEM Quarter 1 - Module 4: Classification of Rocks.” TeacherPH, 10 Sept. 2021, www.teacherph.com/earth-science-for-stem-quarter-1-module-4/. Q&A The earth’s crust is composed of rocks. Rocks are primarily composed of minerals (but may also Additional contain organic materials). The granite and basalt rocks of the continental and oceanic Additional crusts were the original, igneous rocks. Cycle Types You Rock! Objectives Q&A Additional Additional Cycle Types You Rock! Objectives Q&A Rock Classification How can we classify rocks? Would it be by color, hardness, texture, Additional density or other physical properties? Is it by chemical composition? 02 SEDIMENTARY Additional form through lithification of sediments from other rocks Cycle Types You Rock! 01 03 IGNEOUS METAMORPHIC form due to the cooling and form via recrystallization of other Objectives crystallization of magma rocks due to heat, pressure, and chemical alteration Q&A Additional Additional Cycle Types You Rock! Ocjective (2024). Sciencefacts.net. https://www.sciencefacts.net/wp-content/uploads/2020/04/Rock-Cycle-768x646.jpg Q&A Additional Additional (2024). Pinimg.com. https://i.pinimg.com/originals/da/38/55/da3855e4e00a3eafd64c2ba7332b3b35.jpg Cycle Types You Rock! Ocjective Q&A Additional Mineral Deposits and Their Formation Mineral Mineral Ore Deposit Occurrence Deposit Additional Cycle Types A concentration of a mineral deposit is a is a mineral deposit mineral that is of mineral occurrence that has undergone scientific or large enough in size testing and been You Rock! technological and grade to determined to be importance enable extraction economically viable Objectives under favorable for mining. conditions Q&A Mineral Philippines Reserves in the Additional Additional Cycle Types You Rock! Objectives Q&A Mineral Resources and Their 1. Magmatic Ore Deposits Elements that were once dispersed in magma are Additional Origin accumulated and enriched, forming ore minerals. 02 Additional Fractional crystallization Another process that raises the amount of silica in magma and makes it more felsic is fractional crystallization. Cycle Types 01 You Rock! Crystal Settling As magma cools, heavier minerals crystallize first and Objectives settle at the bottom of the magma chamber. Q&A Mineral Resources and Their 2. Hydrothermal Ore Deposits Hydrothermal deposits form when hot, water- rich fluids flow through Additional Origin fractures and pore spaces in rocks, carrying dissolved metals. 02 Disseminated Deposits 03 Additional Ore minerals are distributed Massive Sulfide Deposits in low concentrations over At oceanic spreading centers, large rock volumes. metals like zinc and copper Cycle precipitate as sulfides when hot fluids meet cold seawater. Types You Rock! 01 Vein-type Deposits 04 Within fault or fissure openings, Stratabound Deposits valuable minerals precipitate, Dissolved minerals in hydrothermal Objectives frequently creating slender, fluids can precipitate in the pore divergent mineralization zones. spaces of lake or oceanic sediments. Q&A Mineral Resources and Their 3. Sedimentary Ore Deposits Sedimentary processes can also concentrate valuable substances through Additional Origin chemical precipitation from lakes or seawater. 01 Additional Evaporite Deposits These form in closed marine environments where evaporation exceeds water inflow. Cycle Types 02 You Rock! Iron formations These consist of alternating layers of iron-rich minerals like hematite and Objectives magnetite Q&A Mineral Resources 4. Placer Ore Deposits and Their Formed when weathering processes release heavy, stable minerals from Additional Origin its matrix, allowing them to be carried downslope into streams. Made up of minerals Additional that have been separated from rocks by weathering and then later Cycle concentrated by gravity. Types Heavier minerals, such as gold, platinum, diamonds, and tin, are mechanically You Rock! concentrated by water currents, while lighter particles are carried Objectives away. patience Thanks for Listening with great Q&A Additional Additional Cycle Types You Rock! Ocjectives Igneous Rocks are made from cooling of molten material such as magma, lava and other pyroclastics. the sequent development of Igneous rocks creates, uplift which exposes them to weathering and erosion. Classes of Igneous Rocks 1. Volcanic (Extrusive) Igneous Rocks - form on earth's surface as lava cools 2. Plutonic (or Intrusive) Igneous Rocks - form deep underground where magma cools slowly; these rocks have a coarse crystalline texture Formation of Igneous Rocks Slow cooling these rocks have large crystal structure visible to the naked eye. Ex. granite, diorite, syenite Formation of Igneous Rocks Rapid cooling creates a minimal mineral crystals that aren't visible to the naked eye. Ex. basalt, obsidian, andesite, rhyolite Formation of Igneous Rocks Pyroclastics the resulting materials can be as small as ash, or large enough to be called PYROCLASTIC ROCKS. Ex. ignimbrite, tuff, volcanic breccia, scoria, pumice Sedimentary Rocks can formed through cementation and compaction of eroded materials from other rocks. Weathering Erosion Sedimentary Rocks Most sedimentary rocks are formed of layers of materials that have washed into lakes, rivers and oceans – Sedimentary rocks form strata Often layers are tilted by earth movements Sedimentary rocks contain fossils Formation of Sedimentary Rocks Through Lithification Processes: Deposition happens when friction and gravity overcome the forces driving sediment transport, allowing sediment to accumulate. Compaction occurs when material continues to accumulate on top of the sediment layer, squeezing the grains together and driving out the water. Cementation is the process of cementing minerals coating the sediment grains and gluing them together into a fused rock. Classes of Sedimentary Rocks Clastic Sedimentary Rocks form from the accumulation and lithification of mechanical weathering debris. Examples: breccia, conglomerate, sandstone, siltstone, and shale. https://geology.com/rocks/sedimentary-rocks.shtml#:~:text=There%20are%20three%20basic%20types%20of%20sedimentary%20rocks.%20Clastic%20sedimentary Classes of Sedimentary Rocks Chemical Sedimentary Rocks form when dissolved materials precipitate from solution. Examples: chert, some dolomites, flint, iron ore, limestones, and rock salt https://geology.com/rocks/sedimentary-rocks.shtml#:~:text=There%20are%20three%20basic%20types%20of%20sedimentary%20rocks.%20Clastic%20sedimentary Classes of Sedimentary Rocks Organic Sedimentary Rocks form from the accumulation of plant or animal debris. Examples: chalk, coal, diatomite, some dolomites, and some limestones https://geology.com/rocks/sedimentary-rocks.shtml#:~:text=There%20are%20three%20basic%20types%20of%20sedimentary%20rocks.%20Clastic%20sedimentary Metamorphic Rocks Metamorphic rocks are rocks that have been changed in form due to heat, pressure, and chemical alteration. metamorphism pressure and temperature dictate its new properties. Formation of Metamorphic Rocks HEAT. As temperature rises, the energy reorganizes atoms in minerals, leading to the formation of new minerals. Helmenstine, Anne. “Metamorphic Rocks - Formation, Types, Examples.” Science Notes and Projects, 24 Feb. 2024, sciencenotes.org/metamorphic-rocks-formation-types-examples/. Formation of Metamorphic Rocks PRESSURE. Along with heat, pressure plays a crucial role in metamorphism. Its cause deformation and reorientation of minerals. Helmenstine, Anne. “Metamorphic Rocks - Formation, Types, Examples.” Science Notes and Projects, 24 Feb. 2024, sciencenotes.org/metamorphic-rocks-formation-types-examples/. Formation of Metamorphic Rocks CHEMICALLY ACTIVE FLUIDS. Fluids, particularly water with dissolved ions, cause chemical reactions that alter the composition of the rock. Helmenstine, Anne. “Metamorphic Rocks - Formation, Types, Examples.” Science Notes and Projects, 24 Feb. 2024, sciencenotes.org/metamorphic-rocks-formation-types-examples/. Formation of Metamorphic Rocks TIME. The longer the rock is subjected to heat and pressure, the more pronounced the metamorphic transformation. Helmenstine, Anne. “Metamorphic Rocks - Formation, Types, Examples.” Science Notes and Projects, 24 Feb. 2024, sciencenotes.org/metamorphic-rocks-formation-types-examples/. Properties of Metamorphic Rocks 1. Texture: Can be foliated (layered) or non-foliated. 2. Hardness: Generally harder than their parent rocks. 3. Mineral Composition: Varies depending on the parent rock and the conditions of metamorphism. Helmenstine, Anne. “Metamorphic Rocks - Formation, Types, Examples.” Science Notes and Projects, 24 Feb. 2024, sciencenotes.org/metamorphic-rocks-formation-types-examples/. Types of Metamorphic Rocks Foliated metamorphic rocks have a layered or banded appearance that is produced by exposure to heat and directed pressure. King, H. M. (2019). Metamorphic Rocks | Pictures of Foliated and Non-Foliated Types. Geology.com. https://geology.com/rocks/metamorphic-rocks.shtml Types of Metamorphic Rocks Non-foliated metamorphic rocks do not have a layered or banded appearance. King, H. M. (2019). Metamorphic Rocks | Pictures of Foliated and Non-Foliated Types. Geology.com. https://geology.com/rocks/metamorphic-rocks.shtml

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