Asked by Zeyka Strandzheva on May 31, 2024
Verified
What is the main geologic feature for which Siccar Point in Scotland is famous?
A) a boundary between steep gray layers below and gently dipping red layer above
B) an unconformity
C) an ancient erosion surface
D) all of these
E) none of these
Siccar Point
A location in Scotland famous for its unconformity, visible as an angular discordance between layers of sedimentary rock, demonstrating deep geological time and processes.
Unconformity
A surface of contact between two groups of unconformable strata, indicating a period of erosion or non-deposition in the geological record.
Erosion Surface
A land surface shaped and leveled by the natural removal of soil and rock, usually by water, wind, or ice.
- Identify and explain the significance of unconformities in geologic history.
Verified Answer
YS
yarelis sanchezJun 02, 2024
Final Answer :
D
Explanation :
Siccar Point in Scotland is famous for its unconformity, which is a boundary between steeply inclined (vertical) gray layers of Silurian rocks and gently dipping red layers of Devonian rocks above. This unconformity represents an ancient erosion surface, making all of the options correct descriptions of the geologic feature at Siccar Point.
Learning Objectives
- Identify and explain the significance of unconformities in geologic history.