GEOL 200_Fall 2023_Assignment 1_Answer Sheet

Liam Gavaghan 20101830 GEOL 200 - ASSIGNMENT 1 – ANSWER SHEET DISTRIBUTION OF MARINE SEDIMENTS Due Date: Sept 28, 2023 (11:59 PM, Kingston time) – note changed due date Mark: /23 The assignment can be submitted via onQ. Please submit the file as either a Word document or PDF, the TA isn’t able to open Pages files. Include your name in the file name. This assignment introduces to you the various types of marine sediments and their distribution on the seafloor. You will be using core photos and authentic datasets from the International Ocean Discovery Program (IODP), an international cooperative effort to explore and study the composition and structure of the Earth's ocean basins. What To Do For This Assignment 1. Determine the sediment type for all cores. Answer the additional question for Site 269 and 333. ( 18 marks ) Site # Sediment Type Mark 1097 Glaciomarine Sediment /2 333 Biogenic Sediment, Calcareous Ooze. /2 333 Calcareous Ooze? /1 74 Core 8-74-1-1,2 looks like it is Calcareous Ooze, however Core 8-74-1-5,10 has a different composition with a much greater domination. Therefore, it’s Siliceous Ooze. /2 886 Red Clay Sediment /2 888 Deep Terrigenous /2 1073 Shallow Terrigenous Sediment /2 1236 Deep Terrigenous /2 269 Biogenic Sediment, Siliceous ooze. /2 269 Siliceous Ooze…? /1 2. Briefly answer the following questions on the answer sheet a. Is Site 333 above or below the calcite (carbonate) compensation depth (CCD)? Briefly explain how you know this. ( 2 ). Site 333 is above the CCD as calcareous Nannofossils are more commonly found above the CCD depth than below. Likewise, the CCD for the region is in near 5000 meters depth, while the site is only 1600 meters deep. 1