sedrx

 **In order for you to receive credit, your answers and corrections must be uploaded by midnight, June 8.** 1. Review how each of these sedimentary rocks are formed and be able to identify them: conglomerate, coquina, coal, sandstone, limestone, shale. **all by pressure they are sedimentry clastic, exept for limstone which is a percipitate left behind by water-greg j **  2. Explain the differences between these 4 groups of sedimentary rocks : clastic, bioclastic, evaporite, precipitate. **clastic-made by heavy rocks above weight and pressure** **evaporite-left behind by water** **bioclastic-made by chemicals greg j.** 3. Describe fossilization processes such as lithification (replacement), hard parts, molds and casts, trace fossils, carbonization. 4. What are these special rocks? geodes, gastroliths, coprolites. **geodes- holow rock with crystals inside, gastroliths rocks that were in dinasaurs bellies,-greg**  j coprolites are remnants from an animal such as a bone or a tooth --amy 5. How were the eras of the Geologic Time Scale divided? What are the names of the 4 eras, in order from the formation of the Earth? **precambrian, paleozoic, mesozoic, Cenozoic. divided by biology-greg j.**  6. The Geologic Time Scale reflects 3 trends in the evolution of life on earth. Over time, how do life forms change? **Life becomes more complex and more populated - Megan** 7. How old is the Earth, according to absolute dating methods? **earth is 4.55 billion years-greg j**  8. What main themes are associated with each of these times: the PreCambrian? The Paleozoic? The Mesozoic? The Pleistocene? **Precambrian-orgin of earth firt organism** **pleistocence-age of Mamals greg j.** 9. What types of rocks can be assigned an absolute age?  **igneus, and metamorphic-greg j** <span style="font-size: 13pt; font-family: ArialMT; color: rgb(131, 86, 207);"> <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);">10. What is the special use for Carbon-14 in dating? <span style="font-size: 13pt; font-family: ArialMT; color: rgb(131, 86, 207);"> <span style="font-size: 13pt; font-family: Arial-BoldMT; color: rgb(131, 86, 207);">**a living thing takes in carbon 14 and when dead it stops the level of carbon-14 in fossil detremines how long its been dead-greg j** <span style="font-size: 13pt; font-family: ArialMT; color: rgb(131, 86, 207);"> <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);">11. List a few rocks and a soil type that is impermeable. <span style="font-size: 13pt; font-family: ComicSansMS-Bold; color: rgb(131, 86, 207);">**Shale,cacite(desert sand),granite,-greg j** <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);"> 12. What's an aquifer? What types of sediments and rocks make good aquifers? <span style="font-size: 13pt; font-family: ArialMT; color: rgb(131, 86, 207);"> <span style="font-size: 13pt; font-family: Arial-BoldMT; color: rgb(131, 86, 207);">**A sediment or rock that lets water travel trough it, sand gravel conglomerate,sandstone,and limestone-greg j** <span style="font-size: 13pt; font-family: ArialMT; color: rgb(131, 86, 207);"> <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);">13. How do wells affect the water table? What is the difference between an artesian well and a non-flowing well? <span style="font-size: 13pt; font-family: ComicSansMS-Bold; color: rgb(131, 86, 207);">**Wells lower the water table. an artesian well never has to be pumped unlike non flowing well. -greg j** <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);"> 14. How do caves and karst features (such as sinkholes) form? In what type of rock are caves formed? Why? <span style="mso-bookmark: OLE_LINK10;"> **most caverns are created at or below the water table in the zone of saturation acidic ground water slowly dissolves weak rocks over time caves are formed made of limestone-greg j** <span style="font-family: Comic Sans MS; mso-fareast-language: JA; msobidifontsize: 12.0pt; mso-bidi-font-size: 12.0pt; msofareastlanguage: JA;">
 * Please remember- first names only!**
 * precipitate-leaves water**
 * paleozoic-age of invertebrates, fish, amphibians**
 * Mesozoic-age of reptiles**

Questions 17-22 use the diagram below

17. List the ages of all these faults: P, K, C, T. For each, say what rock they came before and after. 18. Reconstruct the correct sequence of ages from oldest to youngest using __all__ of these letters: A S O M X L B V E H F L D Z J <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);">happens between these strata: A and F, Z and B, M and X. <span style="font-size: 13pt; font-family: ComicSansMS-Bold; color: rgb(131, 86, 207);">**a-f Noncoformity, z-b discomformity, m-x angular comformity-greg j** <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);"> <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);">20. List the 4 letters that are igneous rocks: <span style="font-size: 13pt; font-family: ComicSansMS-Bold; color: rgb(131, 86, 207);">**A ,S, E, M-greg J** <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);"> <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);">21. Which letter is schist: <span style="font-size: 13pt; font-family: ComicSansMS-Bold; color: rgb(131, 86, 207);">**C-greg j** <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);"> <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);">22. What water speed is associated with Z? <span style="font-size: 13pt; font-family: ComicSansMS-Bold; color: rgb(131, 86, 207);">**fast water speed is associated with conglomerte-greg j** <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);"> <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);">23. What are transgressions? What rock sequence would you expect to see in one <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);">(bottom to top)? <span style="font-size: 13pt; font-family: ComicSansMS-Bold; color: rgb(131, 86, 207);">**ocean covers land sandstone shale limestone-greg J(that was from bottom to top)** <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);"> <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);">24. What are regressions? What rock sequence would you expect to see in one <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);">(bottom to top)? <span style="font-size: 13pt; font-family: ComicSansMS-Bold; color: rgb(131, 86, 207);">**ocean goes away limestone ,shale ,sandstone-greg j(this is the same way as above)** <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);"> <span style="font-size: 13pt; font-family: ComicSansMS; color: rgb(131, 86, 207);">25. Find a picture of each of these common Michigan fossils and upload it: <span style="mso-bookmark: OLE_LINK12;"> trilobite, brachiopod, Petoskey Stone (coral), crinoid, horn coral. from left to right-greg j.