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Geological Significance of Ooids Quiz

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Questions and Answers

What distinguishes peloids from ooids?

Peloids are larger in size than ooids.

Peloids are only found in deep sea environments.

Peloids lack internal structures. (correct)

Peloids have concentric internal structures.

How are fecal pellets related to peloids?

Fecal pellets are unrelated to the formation of peloids.

Fecal pellets form concentric internal structures like peloids.

Fecal pellets are always larger than peloids.

Fecal pellets are a type of peloid. (correct)

Which process may lead to the formation of peloids?

Formation from large intraclasts.

Micritization of large ooids.

Boring activities of endolithic algae on skeletal fragments. (correct)

Micritization due to current transport.

What is the size range of peloids?

Silt to fine-sand size (0.03–0.1 mm). Signup and view all the answers

How do peloids differ from rounded intraclasts?

Peloids have uniform shape and good sorting. Signup and view all the answers

What is the main distinguishing feature of oncoids?

Size exceeding 1 to 2 cm. Signup and view all the answers

What is the primary distinguishing factor between peloids and fecal pellets?

Internal structure Signup and view all the answers

What is the primary distinguishing factor between solution porosity and intercrystalline porosity?

Formation process Signup and view all the answers

Which type of porosity is primarily associated with fractures caused by compaction?

Secondary porosity Signup and view all the answers

What distinguishes intragranular pore space from intergranular pore space?

Presence within individual particles or among framework grains Signup and view all the answers

Which type of porosity is primarily associated with pore space among chemically formed crystals?

Intercrystalline pore space Signup and view all the answers

What type of porosity is caused by the dissolution of fossils within a rock?

Solution porosity Signup and view all the answers

Which phenomenon leads to wave breaking and net horizontal movement in shallow water?

Increase in wave amplitude Signup and view all the answers

What distinguishes wave behavior in water from wave behavior in solids?

"Oscillatory motion without net horizontal movement" Signup and view all the answers