Which of the following best explains the origin of eskers in glaciated landscapes?
Show answer & explanation
Correct answer: C
Explanation
Correct Answer:
Sinuous ridges from subglacial meltwater deposition
Explanation:
Eskers are long, winding ridges of sand and gravel found in glaciated regions. They are formed by the deposition of sediments carried by meltwater flowing beneath a glacier (subglacial meltwater). When the glacier eventually melts, these deposits remain as ridge-like structures on the surface.
Key Points:
Eskers are formed under glaciers
They consist of sand and gravel deposits
They are long, sinuous (winding) ridges
They are important glacial landforms
Additional Facts:
Eskers are commonly found in formerly glaciated regions
They indicate the path of ancient subglacial water channels
They help in understanding glacier movement and meltwater flow
Important Questions:
Q1: What are eskers?
Ans: Winding ridges formed by subglacial meltwater deposits
Q2: How are eskers formed?
Ans: By deposition of sediments by meltwater beneath glaciers
Q3: What do eskers indicate?
Ans: Past glacial meltwater flow paths