Questions and Answers
What is the definition of 'Micrite matrix, 0-1 % allochems'?
What does 'Micrite matrix, 1-10 % allochems' refer to?
What is the definition of 'Micrite matrix, 10-50% allochems'?
What is defined as 'Micrite matrix, over 50% allochems'?
Signup and view all the answers
What is the definition of 'Subequal Spar and Micrite'?
Signup and view all the answers
What does 'Spar Cement, sorting poor' refer to?
Signup and view all the answers
What is the definition of 'Spar Cement, sorting good'?
Signup and view all the answers
What does 'Spar Cement, rounded and abraded' refer to?
Signup and view all the answers
What is the definition of 'Quiet water deposition'?
Signup and view all the answers
What does 'High Wave current activity' refer to?
Signup and view all the answers
What does the prefix 'bio' refer to?
Signup and view all the answers
What does the prefix 'oo' refer to?
Signup and view all the answers
What does the prefix 'pel' refer to?
Signup and view all the answers
What does the prefix 'intra' refer to?
Signup and view all the answers
Study Notes
Micrite Classification
- Micrite matrix containing 0-1% allochems is classified as Micrite.
- Micrite matrix with 1-10% allochems is termed Fossil-iferous Biomicrite, indicating the presence of fossils.
- For micrite matrix consisting of 10-50% allochems, the classification is Sparse Biomicrite, showing a moderate abundance of allochems.
- When the micrite matrix contains over 50% allochems, it is known as Packed Biomicrite, indicating a dense concentration of allochems.
Spar Cement Classification
- Subequal Spar and Micrite refers to a type of biosparite that is poorly washed, revealing a mix of spar and micrite.
- Spar Cement with poor sorting results in Unsorted Biosparite, where grains lack uniformity in size and distribution.
- Spar Cement with good sorting is categorized as Sorted Biosparite, indicating a homogenous grain size and better arrangement.
- Rounded and abraded Spar Cement signifies Rounded Biosparite, suggesting that the grains have undergone significant transport and wear.
Deposition Environments
- Quiet water deposition is associated with Micrite, reflective of environments with low energy where fine particles settle slowly.
- High wave current activity leads to the formation of Rounded Biosparite, where strong currents affect grain shape and size.
Fossil and Ooid Prefixes
- The prefix bio is used for fossils, indicating biological origin.
- The prefix oo denotes ooids, which are small, minimally lithified grains often formed in marine environments.
- The prefix pel relates to peliods, small grains similar to ooids but differing in origin and formation.
- The prefix intra is used for intraclasts, which are fragments of pre-existing carbonate materials.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge of micrite matrices with this quiz. Each flashcard presents a different percentage of allochemicals and their corresponding definitions. Perfect for geology students or anyone interested in sedimentary rock classification.