sci

What is a spit in geomorphology?

A spit is an extended stretch of beach material that projects out to the sea/ocean and is joined to the mainland at one end.

What defines a baymouth bar?

A baymouth bar is a depositional feature that closes off a bay, forming a lagoon behind it.

How are barrier islands formed?

Barrier islands are formed by wave and tidal action parallel to the mainland coast.

What are moraines in relation to glaciers?

Moraines are accumulations of debris previously carried by a glacier.

What is a glacier?

A glacier is a persistent body of dense ice that is constantly moving under its own weight.

What characterizes a kettle lake?

A kettle lake is a shallow, sediment-filled body of water formed by retreating glaciers or draining floodwaters.

Describe a drumlin.

A drumlin is an elongated hill in the shape of an inverted spoon or half-buried egg formed by glacial ice acting on underlying unconsolidated till or ground moraine.

What is a till plain?

A till plain is an extensive flat plain of unsorted glacial deposits.

What does tilt refer to in geology?

Tilt refers to the angle at which rock layers or other planar features are inclined from the horizontal.

What is a terminal moraine?

A terminal moraine is a moraine deposited at the point of furthest advance of a glacier or ice sheet.

What are recessional moraines?

Recessional moraines are moraines that form during pauses in the retreat of a glacier.

Define marine in a general context.

Marine refers to anything related to the ocean.

What are glacial striations?

Glacial striations are scratches or gouges cut into bedrock by glacial abrasion.

What is an erratic?

An erratic is a boulder or rock transported and deposited by a glacier having a lithology different than the bedrock upon which it rests.

What is called till in geological terms?

Till is unsorted glacial sediment.

What is the outwash in glacial deposits?

Outwash is glacial sediment deposited by meltwater streams.

What is a kame terrace?

A kame terrace is a flat-topped deposit of sediment that forms between a glacier and a valley wall.