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Wednesday October 28, 2009

Wednesday October 28, 2009. EQ: What processes lead to the formation of Igneous Rock? ¿Qué procesos conducen a la creación de la roca ígnea? NO Journal: Complete the Igneous Rock Concept Model and turn in. Termine el modelo del concepto de la roca ígnea y dé vuelta al pulg.

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Wednesday October 28, 2009

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  1. WednesdayOctober 28, 2009 • EQ: What processes lead to the formation of Igneous Rock? • ¿Qué procesos conducen a la creación de la roca ígnea? • NO Journal: Complete the Igneous Rock Concept Model and turn in. • Termine el modelo del concepto de la roca ígnea y dé vuelta al pulg. • Take Projects Home

  2. WednesdayOctober 28, 2009 • EQ: What processes lead to the creation of igneous rock? • Qué procesos conducen a la creación de la roca ígnea? • Agenda • Planner/Journal • Igneous Rock Crystals Lab pt 2 (Laboratorio pinta 2 de los cristales de la roca ígnea) • When finished, read text p 205-207 Sedimentary Rock • Igneous Video Clip (Clip video ígneo) • Intro to Sediment (Introducción al sedimento) • Weathering Demo (Versión parcial de programa del desgaste por la acción atmosférica)

  3. Rocks from Lava • Extrusive igneous rocks form when melted rock material cools on Earth’s surface. • Intrusive igneous rocks form when magma is cooled below Earth’s surface.

  4. Igneous Rocks

  5. Less than 3 billion years ago; Earth was completely molten material. As this molten rock cooled, igneous rock formed. Igneous rock forms from magma or lava and is classified by its origin, texture, and its composition.

  6. Extrusive- rock formed from lava that cooled “externally” on Earth’s surface. Are formed from rapidly,cooled lava to make fine-grained rocks with small crystals. Examples: Basalt, obsidian, rhyolite, pumice

  7. Intrusive- rock formed from magma that cooledinside the Earth. Are formed from slow cooling magma to make coarse, large-grained rocks with large crystals. Examples: Granite, gabbro

  8. Sedimentary Rocks

  9. Formed from smaller parts of other rocks and sediment. Process for making a sedimentary rock.. 1. Weathering & erosion 2. Deposition of sediment 3. Compaction & Cementation

  10. Weathering: Process of breaking down rock by heat, cold, rain, wind, ice, or waves Two kinds of weathering: • Physical: grinding, crunching • Chemical: ex-acid rain

  11. 3 types of sedimentary rocks: • Clastic-made up of broken pieces of other kinds of rock. Examples: Shale Sandstone Conglomerate Breccia

  12. 2. Organic-made up of remains of plants and animals. Examples: Coal Limestone

  13. 3. Chemical-rocks that forms when minerals dissolved in a solution crystallize. Examples: Gypsum Halite

  14. Metamorphic Rocks

  15. “Metamorphic”- means “change of forms”. • Metamorphic rocks form fromigneous rocks or sedimentary rocks that undergoextreme heat and pressure. • Change takes millions of years. Rocks can recrystallize and have chemical changes too.

  16. Metamorphic rocks form from conditions at areas where plates have collided to form mountains. • Examples: slate, gneiss (NICE), marble

  17. Foliated- means the metamorphic rock has visible layers • Non-Foliated- means the metamorphic rock does not havevisible layers

  18. When a parent rock experiences EXTREME heat and pressure, it morphs into a new rock.

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