moraine

/mɔ'rein/

Thân thiện

A hiker stands before a long, winding moraine in a mountain valley.

Definition

1. Noun:
   • A mass of rocks and sediment carried down and deposited by a glacier: A "moraine" is a specific geological landform consisting of unconsolidated glacial debris—such as soil, rock, and clay—that has been transported and left behind by the movement of a glacier.

Usage and Examples

• Noun:
  • The hikers walked along the lateral moraine, a ridge of debris marking the glacier's former edge.
  • Scientists study the terminal moraine to understand how far the ancient ice sheet extended.

Advanced Usage and Context

• "moralne-dammed lake": A lake formed when meltwater is trapped behind a moraine acting as a natural dam.
  • The unstable moraine-dammed lake poses a significant flood risk to the valley below.

Variants and Related Words

• Morainal (adj): Pertaining to or consisting of moraine.
  • The morainal deposits created a very fertile soil in the region.
• Morainic (adj): Another adjective form meaning of or like a moraine.
  • The landscape's morainic features are clearly visible from the air.

Synonyms

• Glacial drift: A general term for all material deposited by glaciers or their meltwater.
• Till: Unsorted glacial sediment deposited directly by the ice.

Different Types of Moraines

• Lateral moraine: Debris deposited along the sides of a glacier.
• Medial moraine: A ridge of debris formed where two lateral moraines meet when glaciers converge.
• Terminal moraine (or end moraine): A ridge of debris marking the farthest advance of a glacier.
• Ground moraine: A relatively thin, widespread layer of till deposited underneath a glacier as it melts.

Học thuật

Noun

1. accumulated earth and stones deposited by a glacier