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Understanding Sedimentary and Metamorphic Rocks: Key Concepts and Questions

This assessment explores fundamental concepts in geology, specifically focused on different types of rocks, their formation, and characteristics. It includes questions about clastic sedimentary rocks, nonfoliated metamorphic rocks, geological eras, and the processes that transform mud into rock. The assessment also encourages students to hypothesize about the geologic history of observed outcrops and to classify rocks based on fossil content and other attributes. Expand your knowledge in Earth materials through this structured inquiry.

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Understanding Sedimentary and Metamorphic Rocks: Key Concepts and Questions

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  1. Earth MaterialsFormative Asessment

  2. 1. What is the name of a clastic sedimentary rock with a grain size between silt and gravel?2. What is the name of a nonfoliated metamorphic rock that reacts with HCl?

  3. 3. A rock has an age of 520 mya. From what geologic time era is this rock?4. Is coal a mineral, sedimentary rock, or igneous rock?

  4. 5. What is the texture and composition of granite?6. A layer of mud becomes rock and then is found on the surface of the ground? What 4 processes must occur in order for these events to occur?

  5. 7. A rock contains a trilobite and crinoid. What type/class of rock is it?8. A mafic, extrusive igneous rock is observed in an outcrop. What can you hypothesize about the past geologic history that formed it?

  6. 9. A limestone with Tertiary fossils is observed in an outcrop. In what physiographic province was it deposited?10. A geologist interprets a rock strata to be a river channel deposit. What likely name would the rock have?

  7. ANSWERS Sandstone Marble Paleozoic Sedimentary rock Intrusive / Felsic Deposition – Burial – Uplift – Erosion Clastic Sedimentary rock Volcanism Coastal Plain Conglomerate

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