Answers part three new
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This document contains notes from geology lectures and homework assignments on various topics: - Characteristics of igneous, sedimentary and metamorphic rocks - Exercises identifying rock samples and interpreting their formation environments - Homework on metamorphic rocks requiring reading specific textbook pages and completing exercises - Discussion of the Palisades Sill geological formation along the Hudson River - Figures and explanations of tectonic settings for different igneous rock types
![• The exposure is approximately 80 kilometers
(50 mi) long, most of it following the Hudson
River. It first emerges in Staten Island in New
York City.[1] The sill then crosses the state line
into New Jersey, where Hoboken, Jersey City,
Union City, Fort Lee, and Englewood Cliffs all
lie on it](https://image.slidesharecdn.com/answerspartthreenew-131001102537-phpapp02/85/Answers-part-three-new-11-320.jpg)
Answers part three new
- 2. UPLOAD TO SLIDE SHARE ALL4 OPEN ALL OF THESE-3 AM • aaaaaaaaaaROCKEXAM aaaaaFELSIC PAGE 58 • Answers to tell class on Monday j5 ese 11 new • And • Characteristics of sedimentary rocks • And • Agends foe first payday open this Sunday and monday
- 3. NEXT H.W-metamorphic rock • PAGE 106-EX 1 Page 109 –ex 2 Page 110-ex 3 and 4 Page 111-ex 5 Page 113-ex 6 Page 114-ex 7 Page 119-ex 8 Page 120-ex 9
- 4. NEXT H.W-metamorphic rock • Page 122-ex 10 • Page 123-ex 11 • Page 124-ex 11-cont. • Page 125-ex metamorphic study sheet • Page 126-ex metamorphic study sheet • Page 127 -152-read ahead is best
- 5. • Bowen’s reaction series • Ex 8-(a) • Continuous mixture @ 1400 degrees Celcius • Continuous mixture @ 800 degrees Celcius • Ca and Na effected by temp • Ex 8-(b) • Hot magma rises faster • And –passes into cold magma • Depression melting-no heat • Magma mixing-best answer
- 6. • 8 c. list the four major igneous rocks • From high temp to low • Igneous Felsic-800 celcius-iron and silicon • Intermediate -1000 celcius • Mafic -1400 celcius-magnesium and iron • Ultra-mafic -1400
- 8. next class Ex 9-igneous rock-Page 63 The Palisades rising above the Hudson River
- 9. Location map of the Palisades Sill (red) within the Newark Basin (yellow)
- 10. • The outcrop of the Palisades Sill is quite recognizable for its prominent cliffs above the Hudson River; it is easily seen from the western portions of Manhattan
- 11. • The exposure is approximately 80 kilometers (50 mi) long, most of it following the Hudson River. It first emerges in Staten Island in New York City.[1] The sill then crosses the state line into New Jersey, where Hoboken, Jersey City, Union City, Fort Lee, and Englewood Cliffs all lie on it
- 12. • The sill eventually crosses back into New York, following the Hudson River north until reaching Haverstraw. It is at this point that the sill makes a turn to the west, where it disappears near Pomona. At this turn, the sill cuts across local strata, making it a dike in that area, not a sill.
- 13. • It has been proposed that the sill reemerges in two locations in Pennsylvania (where the outcrops are also discordant with local strata), but this idea is not generally agreed upon, and discussion of the Palisades Sill is usually limited to the exposure in New York and New Jersey.
- 14. Figure 11 • Separate host of granite from the mafic (Mg and Fe) • Suggest a origin of these zones: • 1. partial melting-produces basalt • 2. magnetic differentiation is best answer: it separates early formed-denser material from magma
- 15. Figure 11 • 3. also assimilation: since as magma rises-it may add ions by melting • As new material is incorporated –the magma composition may change enough to enable crystal to form –which might not ever been otherwise able to be produced
- 16. Figure 11 • 4. lastly-magma mixing-evidence suggests some intermediate rocks did not crystalize • So they formed when-felsic and mafic were mixed
- 17. Figure 12 • Tectonic settings for major igneous rock types
- 18. Figure 12-TECTONIC SETTINGS • Convergent boundaries • Subduction zones • Volcanic island arcs • Andean –type mountains
- 19. Divergent boundaries • Ocean hot-spot islands-basalt • Ocean floors-basalt (MORB) • Mid ocean ridges-basalt (MORB) • Continental rift zones (Ryolite) • Continents (granite, ryolite, basalt
- 20. • Ultra mafic rocks-Periodotites • Mafic igneous rocks-Basalt and Gabbro • Intermediate rocks-andestie and diorite • Felsic rocks-granite and rhyolite
- 21. Ex 10-page 65 • Origin of mafic magmas • A. mid ocean ridges • B. continental rifts • C. oceanic and continental volcanic arcs • D. hot spots
- 22. Use table 3 • Origin of magmas in subduction zones • Origin of granite and rhyolite in continental drifts • Interpreting tectonic settings of igneous rocks
- 23. Google earth sites • Yellowstone national park • The palisades in new jersey • Hawaii, an ocenic hot spot • The central rift valley in iceland • The cascade mountains • The Sierra Nevada mountain
- 24. Today….Chapter 4 • 1.what kind of sediment can be produced from granite? • 2. looking again at weathering products • 3. weathering history recorded in clasts in sedimentary rocks • 4.Simulating chemical sedimentary textures
- 25. Today….Chapter 4 • 5. distinguishing amoung compostional classes
- 26. Today….Chapter 4 Identifying sedimentary rocks • Hardness test • Reaction with acid • Analysis of texture • Analysis of grain size • Distinguishing between conglomerate and brecia • Use table 1 and flow chart page 84
- 27. Today….Chapter 4 • 7. what could move clasts • 8. interpreting sorting • 9 recognizing the difference between conglomerate and brecia • 10. recognizing sediment deposited by streams, wind, and glaciers • 11. interpreting cements
- 28. Today….Chapter 4 • 12. gaining insite into depositional environments of sedimentary rocks • 13. interpreting outcrops