Which type of estuary is formed by river erosion?

• Bar-built estuary

• Fjord estuary

• Coastal plain estuary

• Tectonic estuary

Which type of estuary is formed by barrier bar formation?

• Fjord estuary

• Coastal plain estuary

• Bar-built estuary

• Tectonic estuary

What is the primary factor that influences the geometry of wave-dominated estuaries?

• Glacial activity

• Longshore currents

• Tidal currents

• Fluvial processes

What is the geometry of tidal-dominated estuaries?

• Shore-parallel

• Shore-normal

• Circular

• Irregular

In estuarine environments, what type of flow is characterized by less dense water entering a denser water body?

• Hyperpycnal flow

• Hypopycnal flow

• Turbidity flow

• Homopycnal flow

What causes hyperpycnal flows in delta environments?

• High tidal influence

• Wave action

• Low salinity in basin water

• High sediment load in fluvial source

During which sea level change is estuarine deposition most likely to be preserved?

• Isostatic rebound

• Eustatic fall

• Transgression

• Regression

What happens to estuarine deposits during a regression?

• They are preserved

• They form new estuaries

• They become more saline

• They are eroded

What sedimentary structures are typically found in estuarine sequences?

• Cross-bedded sand dunes

• Thick coal seams

• Massive sandstone beds

• Interbedded sand and mud facies

Which law helps in identifying depositional environments by examining adjacent environments?

• Walther's Law

• Steno's Law

• Darcy's Law

• Newton's Law