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