Using the site above, answer the following questions
- Https Opengeology Org Historicalgeology Virtual Sample Sets Vss Metamorphic Rocks Using The Site Above Answer The Fo 1 (103.88 KiB) Viewed 15 times
https://opengeology.org/historicalgeology/virtual-sample-sets/vss-metamorphic-rocks/ Using the site above, answer the fo
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https://opengeology.org/historicalgeology/virtual-sample-sets/vss-metamorphic-rocks/ Using the site above, answer the fo
https://opengeology.org/historicalgeolo ... hic-rocks/
Using the site above, answer the following questions
Incorrect Incorrect Incorrect Incorrect Question 2 Samples A, B, and C are all examples of schist: different kinds of schist, each with distinctive porphyroblasts. Which schist sample has porphyroblasts of the mineral garnet? Ⓒ Sample A Sample B @Sample C All three display garnet. Question 5 Compare samples D and E "D" is a small sample of rock, about 4 cm across. "E" is an outcrop of rock; a yellow pencil on the outcrop provides a sense of scale. Both "D" and "E' exhibit a distinctive metamorphic texture. What is it? Follation: slaty cleavage Foliation: schistocity Ⓒ Foliation: gneissic banding Nonfolation: "fused" texture Question 7 Compare samples D and E again. You identified an important metamorphic texture and a primary feature of the protolith in the previous questions. What do these features imply about the tectonic history of these two samples? This question has two (2) possible correct answers. You will receive .5 points for each correct answer and lose .5 points for each incorrect answer selection. The rocks experienced low grades of metamorphism. The rocks experienced high grades of metamorphism. The rocks experienced confining pressure only The rocks experienced differential stress Question 8 Refer once again to samples D and E. Which of the following is the best interpretation for these rocks? Ⓒ These rocks were subducted, as evidenced by the blueschist mineral glaucophane. They were likely on some cceanic crust that was metamorphosed under high pressure but low temperature conditions. These rocks were subjected to confining pressure during an episode of rifting. Megma intrustions baked them into contact metamorphic rocks. The rocks were throughly recrystalized O These rocks were subjected to differential stress during mountain building, causing them to develop metamorphic foliation in the form of slaty cleavage. However, they were not too throughly recrystallized, which is why we can still see primary sedimentary bedding. Hence, these rocks were probably on the fringes of a mountain belt 0/1 pts 10 These rocks were subjected to intense differential stress during mountain building, causing them to develop metamorphic foliation in the form of gneissic banding.They were throughly recrystallized at temperature/pressure conditions near the solidus, which is why we can see evidence of partial melting. Hence, these rocks were probably in the heart of a mountain belt. 0/1 pts 0/1 pts 0/1 pts
Using the site above, answer the following questions
Incorrect Incorrect Incorrect Incorrect Question 2 Samples A, B, and C are all examples of schist: different kinds of schist, each with distinctive porphyroblasts. Which schist sample has porphyroblasts of the mineral garnet? Ⓒ Sample A Sample B @Sample C All three display garnet. Question 5 Compare samples D and E "D" is a small sample of rock, about 4 cm across. "E" is an outcrop of rock; a yellow pencil on the outcrop provides a sense of scale. Both "D" and "E' exhibit a distinctive metamorphic texture. What is it? Follation: slaty cleavage Foliation: schistocity Ⓒ Foliation: gneissic banding Nonfolation: "fused" texture Question 7 Compare samples D and E again. You identified an important metamorphic texture and a primary feature of the protolith in the previous questions. What do these features imply about the tectonic history of these two samples? This question has two (2) possible correct answers. You will receive .5 points for each correct answer and lose .5 points for each incorrect answer selection. The rocks experienced low grades of metamorphism. The rocks experienced high grades of metamorphism. The rocks experienced confining pressure only The rocks experienced differential stress Question 8 Refer once again to samples D and E. Which of the following is the best interpretation for these rocks? Ⓒ These rocks were subducted, as evidenced by the blueschist mineral glaucophane. They were likely on some cceanic crust that was metamorphosed under high pressure but low temperature conditions. These rocks were subjected to confining pressure during an episode of rifting. Megma intrustions baked them into contact metamorphic rocks. The rocks were throughly recrystalized O These rocks were subjected to differential stress during mountain building, causing them to develop metamorphic foliation in the form of slaty cleavage. However, they were not too throughly recrystallized, which is why we can still see primary sedimentary bedding. Hence, these rocks were probably on the fringes of a mountain belt 0/1 pts 10 These rocks were subjected to intense differential stress during mountain building, causing them to develop metamorphic foliation in the form of gneissic banding.They were throughly recrystallized at temperature/pressure conditions near the solidus, which is why we can see evidence of partial melting. Hence, these rocks were probably in the heart of a mountain belt. 0/1 pts 0/1 pts 0/1 pts