Map Exercise: Complete map exercise 4 from the examples book.
Thin Section: Describe the rock and thin section Me3.
— Due for the first supervision of Lent Term, before lectures start —
Go over your notes and read around the subject a bit!
A structured way of doing this is by identifying the 1A tripos questions that relate to the Michaelmas term of the course (which you can access through Moodle), and use these essay titles to construct essay plans. Where you can’t think what you would say, head back to the notes and then onto relevant textbooks to find the information you need and to furnish your answers with more quantitative detail and real-world examples of the processes you are describing.
A great book for John’s part of the course is Fowler’s Solid Earth, which contains much more than you need to know, but has good clear explanations of key physical processes. The minerals part of the course is nicely expanded upon in Putnis’s Introduction to mineral sciences. For Marian’s part of the course there are a couple of books you might look at, Klein’s Earth Materials and Philpotts’s Principles of Igneous and Metamorphic Petrology are both good; each of which will also contain some examples of real-world occurrences of metamorphic terranes you can use in your essays and photomicrographs to help you relate geological processes to the textures you can see under the microscope. All of these should be in college libraries/UL so you shouldn’t need to buy them.
As a general read, Langmuir’s update of How to Build a Habitable Planet couldn’t be better, but this is a big book so expect reading it to take a while.
After all of this reading you should have plenty of questions for the first supervision next term, so come back with a list of things you want to discuss.
Essay: Why are there surface ocean circulation gyres in each ocean basin? What climatological role do they play?
Please hand in to my Earth Sciences pigeon hole by reception.
Essay: How can metamorphic rocks exposed at the surface of the Earth give us information about the pressure and temperature regimes in which they formed?
Map exercise: Complete map exercise 3 from the examples booklet.
Essay: Describe, using appropriate examples, how basaltic and granitic magmas are generated, the different tectonic environments in which these processes occur, and the type of rocks formed as a result.
Thin sections: Describe the thin sections ‘super 3’ and ‘super 7’. Refer to the short guide I have written to help you. These sections are in an envelope in my department pigeon hole (outside reception, on the left) – please be very careful with them and put them back in the envelope and back in my pigeon hole after you have finished working with them.
Remember that after identifying phases you need to decide what type of rock you are looking at, and give a summary of its history.
Thin section: Describe rock specimens and thin sections I5 and I6. Refer to the short guide I have written to help you.
Question sheet 2 [no need to hand in]: Work through question sheet 2 from Rich’s ‘What is the Earth made of?’ course.
Long-format answer: What is the evidence that lithospheric plates deform only at their boundaries? Why do fracture zones follow small circles?
Calculation question: Attempt the isostasy question in the 2011 Tripos Part 1A practical exam (it is section 2, parts a-c).
Complete the answer on clean sheets of A4 rather than trying to fit it into the text boxes that come with the exam paper. You can download past tripos papers from the NST Part 1A Earth Sciences page on Moodle, just follow the ‘past exam papers’ link from the navigation pane on the left (or follow this link). Note that the structure of the 1A Earth Sciences exams was different before 2012, read your course guide for more details (or look at the most recent exam papers), but some of the older questions set are often still relevant and useful for revision.
Map exercise: Complete map exercise 2 from the examples booklet.
Long format answer: Describe the stratigraphy at Ketton Quarry. What is the evidence for environmental change recorded in the rocks you saw?
Map exercise: Complete map exercise 1 from the examples booklet.
1 page answer only: Make an information table on the distinctions between sedimentary, igneous and metamorphic rocks. Use columns for the different rock groups and rows for the different distinguishing factors. Put descriptive factors first then process factors later. Incorporate diagrams if appropriate.