Ancient ripple marks preserved on a bedding surface of a sandstone in the Dakota Formation (Cretaceous) at Dinosaur Ridge, Colorado. Photo by Vince Cronin.

Important Notes

• The reading assignments are in the required textbooks listed on the course homepage.
• Reminders about the "lecture"-related parts of this assignment
  • The end-of-topic quiz will be available for you to take via the Canvas space associated with the "lecture" part of this course (202030 GEO 1405 01 - The Dynamic Earth) October 1-2 (hopefully).
• Reminders about the lab-related parts of this assignment
  • The completed laboratory activities assigned below must be submitted via the Canvas space associated with your lab section before 11:59 PM Central Time on the day after the day on which your laboratory section is scheduled to meet (e.g., due before Wednesday night at 11:59 PM for a lab scheduled on Tuesday). Instructions for submitting your lab work are provided HERE.
  • The end-of-lab quiz must be completed via the Canvas space associated with your lab section before 11:59 PM Central Time on the day after the day on which your laboratory section is scheduled to meet.
  • You can view the lab assignment alone at https://croninprojects.org/Vince/PhysGeoLab/SedRoxLab-F20.html

Assignment

1. Read: the study questions for this topic, listed at https://croninprojects.org/Vince/Course/PhysGeol/Geo1405-SedRox-Q2020.html and keep them in mind as you read the following assignments. Most, if not all, of the answers will be in the reading assignments for this topic.
2. View the video introducing the material in Chapter 6 of the AGI/NAGT Lab Manual at https://goo.gl/JIK8cy.
3. View the pronunciation guide for geoscience terms used in Chapter 6 of the AGI/NAGT Lab Manual at https://youtu.be/e4AuTfaVdPc.
4. Scan: Earth, chapter 7, Sedimentary Rocks
   Note that Tarbuck, Lutgens, and Linneman refer to "chemical" rocks in section 7.3, but it would be better to think of these as precipitated sedimentary rocks.
5. Read: Earth, chapter 7, section 7.1 An Introduction to Sedimentary Rocks and all of its subsections
6. Read: Earth, chapter 7, section 7.2 Clastic Sedimentary Rocks and all of its subsections
7. Scan: AGI/NAGT Lab Manual, chapter 6, section Introduction and all of its subsections, pages 147-153.
8. Read: AGI/NAGT Lab Manual, chapter 6, section Primary Properties of Sediments and Sedimentary Rock and all of its subsections, p. 154-156.
9. Do: AGI/NAGT Lab Manual, chapter 6, Activity 6.4, Sediment from Source to Sink, pages 172-174. If you get stuck, contact your Graduate Teaching Assistant (GTA) or Dr. Cronin and they'll try to help you get unstuck. Submit a PDF of your completed activity sheet to the Sedimentary Rocks assignment in Canvas — submission instructions HERE.
10. Do: AGI/NAGT Lab Manual, chapter 6, Activity 6.5, Sediment Analysis, Classification, and Interpretation, page 175. If you get stuck, contact your Graduate Teaching Assistant (GTA) or Dr. Cronin and they'll try to help you get unstuck. Submit a PDF of your completed activity sheet to the Sedimentary Rocks assignment in Canvas — submission instructions HERE.
11. Read: Earth, chapter 7, section 7.3 Chemical Sedimentary Rocks and all of its subsections
    Note that Tarbuck, Lutgens, and Linneman refer to "chemical" rocks in section 7.3, but it would be better to think of these as precipitated sedimentary rocks as contrasted with clastic (siliciclastic, bioclastic, volcaniclastic) sedimentary rocks or organic solids. Many limestones are mostly or entirely bioclastic sedimentary rocks.
12. Read: Earth, chapter 7, section 7.4 Coal: An Organic Sedimentary Rock.
    Note that coal is not actually a "rock" by common definition, because coal is not primarily made of mineral grains. Hence, referring to coal as an organic solid is preferred to referring to it as a rock.
13. Read: Earth, chapter 7, section 7.5 Turning Sediment Into Sedimentary Rock and its subsections
14. Read: Earth, chapter 7, section 7.6 Classification of Sedimentary Rocks.
15. Read: AGI/NAGT Lab Manual, chapter 6, section Classification of Sedimentary Rock and all of its subsections, p. 156-161
16. Do: AGI/NAGT Lab Manual, Activity 6.6 Hand Sample Analysis and Interpretation, page 176-78, using the videos linked below. Submit it to the Sedimentary Rocks assignment in your lab section's Canvas space — submission instructions HERE.
    Identify these specimens, in the order given, on page 176 of the AGI/NAGT Lab Manual:
    • Unknown 2474 as shown online at https://youtu.be/8IAYoPObdOM
    • Unknown 2612 as shown online at https://youtu.be/k0_MwNwFFng
    • Unknown 3303 as shown online at https://youtu.be/qOqzkHmUv7w
    • Unknown 3651 as shown online at https://youtu.be/K3wUjPuy7F4
    
    Identify these specimens, in the order given, on page 177 of the AGI/NAGT Lab Manual:
    • Unknown 4561 as shown online at https://youtu.be/yL1oknlzeIo
    • Unknown 4736 as shown online at https://youtu.be/9quPSzga93k
    • Unknown 5344 as shown online at https://youtu.be/FjZuBocXTds
    • Unknown 5462 as shown online at https://youtu.be/GpWX_hnEY8E
    • Unknown 6189 as shown online at https://youtu.be/MFv8OCyaZM4
    
    Identify these specimens, in the order given, on page 178 of the AGI/NAGT Lab Manual:
    • Unknown 6672 as shown online at https://youtu.be/rIf9rrB76tg
    • Unknown 6750 as shown online at https://youtu.be/05yjH1RbDTQ
    • Unknown 7434 as shown online at https://youtu.be/-7tUuMW63ec
    • Unknown 9370 as shown online at https://youtu.be/zToa3fgdE-Q
    • Unknown 9908 as shown online at https://youtu.be/BGpjMF6GSfo
17. Read: Earth, chapter 7, section 7.7 Sedimentary Rocks Represent Past Environments and all of its subsections
18. Read: AGI/NAGT Lab Manual, chapter 6, section Sedimentary Structures and Environments and all of its subsections, p. 161-166.
19. Do: AGI/NAGT Lab Manual, chapter 6, Activity 6.7, Grand Canyon Outcrop Analysis and Interpretation, page 179. If you get stuck, contact your Graduate Teaching Assistant (GTA) or Dr. Cronin and they'll try to help you get unstuck. Submit a PDF of your completed activity sheet to the Sedimentary Rocks assignment in Canvas — submission instructions HERE.
20. Do: AGI/NAGT Lab Manual, chapter 6, Activity 6.8, Using the Present to Imagine the Past — Dogs and Dinosaurs, page 180. If you get stuck, contact your Graduate Teaching Assistant (GTA) or Dr. Cronin and they'll try to help you get unstuck. Submit a PDF of your completed activity sheet to the Sedimentary Rocks assignment in Canvas — submission instructions HERE.

Mastering Geology Reminder

Before the deadline on October 2, complete the Dyamic Study Module called Sedimentary Rocks and HW07 by going to Mastering Geology through the Canvas space associated with this lecture section (202030 GEO 1405 01 - The Dynamic Earth)

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