virtual field trip course
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CUNY Hunter College *
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10000
Subject
Geology
Date
Jan 9, 2024
Type
Pages
3
Uploaded by CaptainGrouseMaster1014
College of Staten Island GEO 100 Virtual field Trip Professor Amaach 12/11/23 Join Dr. Alan Benimoff in the Staten Island Geology Virtual field trip in the link below and answer the following questions: https://www.dropbox.com/s/ab2g1lhi499wfgo/SI_GEOLOGY_VIRTUAL_Alan Benim_1920x105
0.mp4?dl=0 STOP 1: Serpentinite 1. What type of ancient plate boundary does the Staten Island Serpentinite represent? ANSWER: convergent plate boundary. 2. List the 3 serpentine minerals found on Staten Island. ANSWER:, antigorite,chrysolite and lizardite 3. What is the geological significance of the Staten island Serpentine? ANSWER: The geological significance of the Staten Island Serpentine lies in its indication of tectonic processes and the nature of the island's bedrock STOP 2: Graniteville Quarry Park. 1. What type of ancient plate boundary does the Palisades Diabase represent? ANSWER: Continental rift boundary 2. What is a xenolith? ANSWER: A xenolith is a rock fragment that becomes enveloped in a larger rock during the latter's formation. 3. What extraordinary event occurred to this xenolith? ANSWER: There is a considerable amount of debate regarding the origin of the sill. We get extraordinarily high amounts of olivine mineral in the rocks at the lower contact of the sill. This mineral composition is not homogeneous throughout the sill body. There are many theories to explain this. It can be explained by two different intervals of magma intrusion or by simple crystal fractionation. 4. Is there evidence for glaciation at this locality?
ANSWER: Yes, there is evidence of glacial movement on the wall of this sill. These are called striation marks or chatter marks. STOP 3: AKR site 1. What type of geologic material is visible in this outcrop? 2. ANSWER: SandStone 3. What sedimentary structure(s) are visible here? ANSWER: Stratification, consisting of bedded layers or strata. 4. What agent of deposition formed this material? ANSWER: Wind STOP 4: The Terminal Moraine at Conference House Park 1. What is the significance of this landform? ANSWER: The significance of this landform is that it can act as a barrier. 2. What agent of deposition formed this material? ANSWER: Glaciers. This is formed due to the recession of glaciers. 3. What is the age of this landform? ANSWER: It is older than 10,000 years old. 4. What are the characteristics of this sedimentary landform? ANSWER: It is typically made up of clay bluffs. The grains that are on this landform are from arbitrary origin and show a poorly sorted sedimentary deposit. Reflect and Discuss: What did you learn about the geology of Staten Island from this virtual field trip? ANSWER: The virtual field trip offered valuable insights into the geology of Staten Island. Key findings include the representation of a convergent plate boundary at the Staten Island Serpentinite, the presence of three serpentine minerals, evidence of a continental rift boundary at Graniteville Quarry Park with intriguing xenoliths, and signs of past glaciation indicated by striation marks. The AKR site showcased wind-deposited sandstone with visible stratification. Additionally, the Terminal Moraine at Conference House Park, formed over 10,000 years ago by
glacial deposition, stands as a significant geological barrier with characteristic clay bluffs. Overall, the island's geology reflects a dynamic history shaped by tectonic forces, sedimentation, and glaciation
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