Coastal Geomorphology Concepts

The video tutorial discusses erosional and depositional shores, focusing on their characteristics and features. Erosional shores, typically found on the west coast, are shaped by tectonic uplift and wave action, forming features like wave cut cliffs, sea caves, arches, and stacks. Depositional shores, on the other hand, are formed by sediment deposition, influenced by longshore drift, and include features like spits, bay barriers, tombolos, and barrier islands. The video also explores the transient nature of barrier islands and their ecological significance.

What is a common characteristic of erosional shores?

• They often have cliffs due to tectonic uplift.

• They are formed by sediment deposition.

• They are typically found on the east coast.

• They are primarily influenced by river sediment.

Which feature is formed when a sea cave erodes through a headland?

• Wave-cut cliff

• Barrier island

• Sea arch

• Sea stack

What primarily influences the rate of erosion on a shoreline?

• The presence of marine life

• The color of the sand

• The amount of sunlight

• The composition of the bedrock

What is the main reason for sediment deposition on depositional shores?

• Presence of sea stacks

• More sediment being deposited than eroded

• Increased wave action

• Tectonic uplift

What is a spit in the context of depositional features?

• A linear ridge of sediment extending in the direction of longshore drift

• A type of sea cave

• A small island formed by erosion

• A type of barrier island

How does a tombolo differ from a spit?

• A tombolo is formed by tectonic uplift.

• A tombolo is a type of sea arch.

• A tombolo is parallel to wave direction.

• A tombolo connects to a true island with bedrock.

What is a barrier island?

• A type of sea stack

• A cliff formed by wave action

• A deposit of sand parallel to the coast

• A ridge of sediment perpendicular to the coast

What is the primary role of longshore drift in depositional shores?

• To erode cliffs

• To deposit sediment along the coast

• To form sea arches

• To create tectonic uplift

Which feature is formed when a spit extends across a bay to connect with the mainland?

• Sea stack

• Barrier island

• Tombolo

• Bay barrier

What is a delta, and what is required for its formation?

• A delta is a type of sea cave, requiring tectonic uplift.

• A delta is a deposit of sand, requiring a river.

• A delta is a type of barrier island, requiring wave action.

• A delta is a ridge of sediment, requiring longshore drift.