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Diagenesis and Limestone Formation Quiz

Created by

@MightyOcean

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Questions and Answers

What is diagenesis?

The hardening of loose sediment into sedimentary rock (correct)

The process of forming metamorphic rock

The erosion of sedimentary rock into loose sediment

The transformation of igneous rock into sedimentary rock

What are the two types of neomorphism?

Intrusive and extrusive neomorphism

Foliated and non-foliated neomorphism

Igneous and metamorphic neomorphism

Aggrading and degrading neomorphism (correct)

What are the diagenetic processes that reduce intergranular pore space in limestone?

Weathering and erosion

Melting and solidification

Subsidence and uplift

Cementation and compaction (correct)

In what type of environment can modern carbonate cements be precipitated?

<p>Intertidal, shallow subtidal, deeper water, and meteoric environments</p> Signup and view all the answers

What is isochemical diagenesis?

<p>When there is no matter change in chemistry of sediment in its transformation into a rock</p> Signup and view all the answers

Study Notes

Diagenesis and Neomorphism

Diagenesis is the process of converting sediment into sedimentary rock.
There are two types of neomorphism:
- Intraclast neomorphism, which involves the replacement of minerals within a rock
- REPLACEMENT neomorphism, which involves the replacement of an entire mineral

Diagenetic Processes in Limestone

Diagenetic processes that reduce intergranular pore space in limestone include:
- Compaction
- Cementation
- Recrystallization

Carbonate Cements

Modern carbonate cements can be precipitated in marine and meteoric environments.

Isochemical Diagenesis

Isochemical diagenesis is a type of diagenesis that occurs in a closed system, where there is no change in the chemical composition of the sediment.

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Description

Test your knowledge about the process of diagenesis and the formation of limestone from loose sediment. Explore concepts like isochemical and allochemical diagenesis, cementation, neomorphism, and carbonate cements.