Sedimentary Rocks A. Form from Sediments Which are pieces of solid material that have been weathered & deposited on the earth’s surface by wind, water,

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Presentation transcript:

Sedimentary Rocks A. Form from Sediments Which are pieces of solid material that have been weathered & deposited on the earth’s surface by wind, water, and or ice from other rocks. Created from the process of cementation & compaction of sediments form in flat layers called strata fossils are found in sedimentary rocks. Show ripple marks and mud cracks Soft rocks

1. Sediment shape indicate the environment of formation. a. Angular: Windy & Dry Climate b. Rounded: Warm and Moist Climate

B. Types of Clastic Rocks Identified by grain size: 1. Conglomerate: Round sediments 2. Sandstone: Fine to Coarse Sized Grains 3. Siltstone: Very Fine Grain Sizes 4. Shale : Made from clay / colloidal suspensions Non-Visible Grains

C. Crystalline (Chemical) 1. Form when sea water evaporates in which dissolved minerals in the water precipitate (fall out) of solution.  Gypsum  Salt  Dolostone  Limestone

 Limestone: Skeletal remains of marine animals  Chalk: Microscopic skeletal remains  Coal: forms from decaying plants 1. Peat 2. Lignite 3. Bitumin ous 2. Bioclastic (Organic) - created from the remains of partially decayed plant and animal matter.

Fragmental Rocks Conglomerate and Breccia

Bioclastic limestone Crystilline Chemical Gypsum

Rock Cycle Song (Sing to the tune of "Row, Row, Row Your Boat") SEDIMENTARY rock Has been formed in layers Often found near water sources With fossils from decayers Then there's IGNEOUS rock Here since Earth was born Molten Lava, cooled and hardened That's how it is formed These two types of rocks Can also be transformed With pressure, heat and chemicals METAMORPHIC rock is born. ( Don't forget to sing this as a "Round"; after all, it is the Rock "Cycle"! )