Rock and Mineral Test
Please provide thorough answers to each question. Many questions have multiple parts, so be sure to answer each part. The last question refers to the graph given on the last page. Either print the graph, complete it, and scan it back in to the document that you submit, or print the graph and turn in a paper copy on Monday. Please submit a digital file (doc or docx) via canvas by Monday, December 8, at 10:30 a.m. The point value of each question is given in parenthesis.
(18) 1. What are the six most common minerals (or mineral groups) in sedimentary rocks? List each, give an example of each, and discuss why they are commonly found in sedimentary rocks. (Ch. 6 of your text may be helpful).
(12) 2. Why are the rocks of the Andes Mountains in South America predominantly andesite? Why is it not the plutonic equivalent, diorite? Name and describe the specific process and geologic setting that supports the formation of andesite in this region. Provide a thorough discussion.
(12) 3. In the Cascade Mountains in western Oregon, one can find rocks of varying composition yet they formed from a single batholiths (large pluton) cooling intrusively. Explain how the process of magma differentiation can create rocks of varying composition within one magma chamber.
(15) 4. Why is shale the best parent material (vs. limestone or sandstone for example) for recording differences in metamorphic grade? List the following rocks from lowest to highest grade: gneiss, slate, garnet-staurolite schist, mica schist, phyllite, kyanite schist, migmatite, and chlorite schist. Make reference to index minerals in your discussion.
(6) 5. List and describe the three main agents driving metamorphism. In your discussion, include how each influences the physical and chemical properties of metamorphic rocks.
(6) 6. Using the QFL diagram for sandstone classification, classify the following rocks (you MUST show your math!):
1. Cement: Quartz, 10%
Q: 90/90
F: 0/90
L: 0/90
Classification: ________________________________
2. Cement: Quartz, 10%
Q: 15/90
F: 50/90
L: 25/90
Classification:________________________________
3. Cement: Calcite, 10%
Q: 30/90
F: 0/90
L: 60/90
Accessory mineral: Mica
Classification: _______________________________
(6) 7. Suppose the chemical analysis of an igneous rock sample has the following weight percentages:
SiO2: 54%
FeO: 8.2 %
MgO: 4.75%
CaO: 8.75%
Na2O: 3.3%
K20: 0.75%
Appropriately label the axes and plot this chemical analysis on the graph given below. Using the following percent distributions of SiO2, this igneous rock is classified as ____.
Percentage SiO2 Name of Extrusive Rock
<52 Basalt
52-57 Basaltic Andesite
57-63 Andesite
63-70 Dacite (fine equivalent of grano-diorite)
>70 Rhyolite
PLACE THIS ORDER OR A SIMILAR ORDER WITH US TODAY AND GET AN AMAZING DISCOUNT ?
Our Service Charter
-
Excellent Quality / 100% Plagiarism-Free
We employ a number of measures to ensure top quality essays. The papers go through a system of quality control prior to delivery. We run plagiarism checks on each paper to ensure that they will be 100% plagiarism-free. So, only clean copies hit customers’ emails. We also never resell the papers completed by our writers. So, once it is checked using a plagiarism checker, the paper will be unique. Speaking of the academic writing standards, we will stick to the assignment brief given by the customer and assign the perfect writer. By saying “the perfect writer” we mean the one having an academic degree in the customer’s study field and positive feedback from other customers. -
Free Revisions
We keep the quality bar of all papers high. But in case you need some extra brilliance to the paper, here’s what to do. First of all, you can choose a top writer. It means that we will assign an expert with a degree in your subject. And secondly, you can rely on our editing services. Our editors will revise your papers, checking whether or not they comply with high standards of academic writing. In addition, editing entails adjusting content if it’s off the topic, adding more sources, refining the language style, and making sure the referencing style is followed. -
Confidentiality / 100% No Disclosure
We make sure that clients’ personal data remains confidential and is not exploited for any purposes beyond those related to our services. We only ask you to provide us with the information that is required to produce the paper according to your writing needs. Please note that the payment info is protected as well. Feel free to refer to the support team for more information about our payment methods. The fact that you used our service is kept secret due to the advanced security standards. So, you can be sure that no one will find out that you got a paper from our writing service. -
Money Back Guarantee
If the writer doesn’t address all the questions on your assignment brief or the delivered paper appears to be off the topic, you can ask for a refund. Or, if it is applicable, you can opt in for free revision within 14-30 days, depending on your paper’s length. The revision or refund request should be sent within 14 days after delivery. The customer gets 100% money-back in case they haven't downloaded the paper. All approved refunds will be returned to the customer’s credit card or Bonus Balance in a form of store credit. Take a note that we will send an extra compensation if the customers goes with a store credit. -
24/7 Customer Support
We have a support team working 24/7 ready to give your issue concerning the order their immediate attention. If you have any questions about the ordering process, communication with the writer, payment options, feel free to join live chat. Be sure to get a fast response. They can also give you the exact price quote, taking into account the timing, desired academic level of the paper, and the number of pages.