Assess the geomorphic processes and depositional landforms associated with glacial action: Statement I: Drumlins are streamlined, teardrop-shaped hills composed of glacial till that indicate the direction of former ice sheet movement. Statement II: Eskers are winding ridges of stratified sand and gravel deposited by meltwater streams flowing within or beneath stagnant glacial ice. Which of the following is correct?

💡 Solution & Explanation

Both statements accurately characterize prominent glacial depositional features formed during continental ice sheet retreat. Drumlins consist of unsorted till molded into asymmetric hills with their steeper upstream sides facing the direction from which the ice advanced. Eskers represent sorted fluvial deposits left behind when subglacial tunnel streams drop their sedimentary load as glacial activity ceases. Glacial landforms provide key evidence for reconstructing past ice ages and paleoclimatic shifts.