diagenesis: meaning, definition, pronunciation and examples
Very lowTechnical/Scientific
Quick answer
What does “diagenesis” mean?
The physical, chemical, and biological changes that sedimentary rock undergoes after deposition and before metamorphism.
Audio
Pronunciation
Definition
Meaning and Definition
The physical, chemical, and biological changes that sedimentary rock undergoes after deposition and before metamorphism.
Any process of transformation that occurs at relatively low temperatures and pressures, typically referring to geological materials but occasionally applied metaphorically to other gradual transformations.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or spelling. Pronunciations may vary slightly (see IPA).
Connotations
None beyond the technical geological meaning.
Frequency
Equally rare and exclusively technical in both varieties.
Grammar
How to Use “diagenesis” in a Sentence
The diagenesis of [rock type][Rock type] undergoes diagenesisDiagenesis results in [mineral/product]Vocabulary
Collocations
Examples
Examples of “diagenesis” in a Sentence
verb
British English
- The sediments began to diagenetically alter under pressure.
- The rock had clearly diagenesed.
American English
- The sediments started to undergo diagenetic alteration under pressure.
- The rock had clearly experienced diagenesis.
Usage
Meaning in Context
Business
Not used.
Academic
Used exclusively in geology, sedimentology, and petroleum engineering courses and literature.
Everyday
Virtually never used.
Technical
The only context for use. Describes specific processes like cementation, compaction, recrystallisation, and mineralogical changes in sediments.
Vocabulary
Synonyms of “diagenesis”
Strong
Neutral
Weak
Vocabulary
Antonyms of “diagenesis”
Watch out
Common Mistakes When Using “diagenesis”
- Mispronouncing as 'diagnosis'.
- Using it to refer to the initial formation of the sediment itself.
- Confusing it with 'metamorphism'.
FAQ
Frequently Asked Questions
No. Fossilisation (the process of becoming a fossil) can occur *during* diagenesis, but diagenesis refers to all the changes happening to the entire sedimentary rock, not just the preservation of organic remains.
Primarily, it occurs after burial, under low temperatures and pressures. Early, shallow burial diagenesis can happen near the surface, but it is distinct from surface weathering.
The main result is the transformation of unconsolidated sediment into consolidated sedimentary rock through processes like compaction, cementation, and mineralogical change.
It is an extremely slow geological process, typically taking thousands to millions of years.
The physical, chemical, and biological changes that sedimentary rock undergoes after deposition and before metamorphism.
Diagenesis is usually technical/scientific in register.
Diagenesis: in British English it is pronounced /ˌdaɪəˈdʒɛnɪsɪs/, and in American English it is pronounced /ˌdaɪəˈdʒɛnəsɪs/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None. It is a purely technical term.”
Learning
Memory Aids
Mnemonic
Think 'DIA-GENESIS': 'DIA' (through/change) + 'GENESIS' (origin/formation) = the changes through which a sedimentary rock forms after being deposited.
Conceptual Metaphor
Aging or maturation of rock (a slow, transformative process leading to a more stable, final form).
Practice
Quiz
Diagenesis is most closely associated with which field?