sedimentary structures

Which type of sedimentary structure is a definite indicator of tidal current?

• Epsilon cross bedding

• Hummocky cross bedding

• Herring -bone cross bedding

• Through cross bedding

Allochem in a limestone consist of

• Micrite only

• Spar only

• Ooids only

• Bioclasts and ooids

In flow regime ,the 'bedform' formed with increasing current velocities are:

• Dune-ripple- plane beds- antidune

• Ripples - Dune -plane beds -antidune

• Antidunes -dunes -ripples-plane beds

• Plane beds -ripples -Dunes -Antidunes

Answer explanation

Coarse grained sediments are transported by:

• Traction process

• Saltaion process

• Suspension process

• None

Coarse grained sediments are transported by:

• Traction process

• Saltaion process

• Suspension process

• None

In what environment do symmetrical ripples most likely form

• Beach(wave )

• Desert(wind)

• Alluvial(Stream)

• Glacial

Which of the following contains the coarse grained sediments?

• Top set bed

• Fore set bed

• Bottomset bed

• Coset bed

Aeolian ripples are characterised by the presence of:

• Coarse grain on the crests

• Finer grain on the crest

• Uniformly even grain on the crests and the trough

• None of the above

In which of the following environments would you expect to find oscillation ripples

• Alluvial

• Beach

• Deep sea

• Desert

Which of the environment will produce sediments with cross bedding

• Deep Ocean

• Swamp

• Tropical rain forest

• Desert