Answer Happy

Learning GOAL You will examine photographs of three types of loose sediment, assess grain size, sorting, roundness, and composition/type, and then infer the sort of environment in which the sediment might have originated. A Complete parts 1 through 6 for each sample in Fig. A6.5.1. Refer to Figs. 6.15. 6.16, and 6.27 as needed. Sample A Sample B Sample C Sarz 1. Grain size range in mm: 2. Percent of each Wentworth size class: und 3. Grain sorting (circle) moderate 4. Grain roundness (circle): angular 3. Grain sorting (circle) poor well 5. Sediment composition (circle): precipitated sibiciclastic bioclastic pyroclastic 6. Describe how and in what environment this sediment might have formed. 1. Grain size range in mm: 2. Percent of each Wentworth size class: clay- 4. Grain roundness (circle) angular subround well rounded 3. Grain sorting (circle): poor moderate 4. Grain roundness (circle) angular gravel well rounded 5. Sediment composition (circle) precipitated pyroclastic 6. Describe how and in what environment this sediment might have formed. 1. Grain size range in mm: 2. Percent of each Wentworth size class: clay: well gravel well rounded 5. Sediment composition (circle): precipitated siliciclistic Noclastic pyroclastic 6. Describe how and in what environment this sediment might have formed. Figure A6.5.1 B REFLECT & DISCUSS Imagine that these sediments are rocks. Which of the samples do you think would be the least diagnostic of a specific ancient environment? Why? 175