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Questions and Answers
What type of plant material does VITRINITE originate from?
What type of plant material does VITRINITE originate from?
What is a characteristic of INERTINITE?
What is a characteristic of INERTINITE?
What is NOT a characteristic of INERTINITE?
What is NOT a characteristic of INERTINITE?
What has been a topic of controversy in the study of macerals?
What has been a topic of controversy in the study of macerals?
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What type of organic matter is NOT mentioned as a source of macerals?
What type of organic matter is NOT mentioned as a source of macerals?
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What is the minimum number of individual grains of vitrinite required to be measured under a microscope?
What is the minimum number of individual grains of vitrinite required to be measured under a microscope?
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What is the purpose of measuring the reflectivity of vitrinite grains?
What is the purpose of measuring the reflectivity of vitrinite grains?
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What instrument is used to measure the reflectivity of vitrinite grains?
What instrument is used to measure the reflectivity of vitrinite grains?
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What type of rock is being analyzed?
What type of rock is being analyzed?
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Why is it necessary to measure the reflectivity of multiple vitrinite grains?
Why is it necessary to measure the reflectivity of multiple vitrinite grains?
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What does vitrinite reflectance measure?
What does vitrinite reflectance measure?
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Where is the vitrinite reflectance measured?
Where is the vitrinite reflectance measured?
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What type of rock is vitrinite reflectance typically measured from?
What type of rock is vitrinite reflectance typically measured from?
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What is vitrinite?
What is vitrinite?
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What is the purpose of measuring vitrinite reflectance?
What is the purpose of measuring vitrinite reflectance?
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What does the TOC-S2 cross-plot show?
What does the TOC-S2 cross-plot show?
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What can be inferred about the source rocks from the TOC-S2 cross-plot?
What can be inferred about the source rocks from the TOC-S2 cross-plot?
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Which of the following is a characteristic of the source rock represented by the diamond symbols?
Which of the following is a characteristic of the source rock represented by the diamond symbols?
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What is the difference between the source rocks represented by the diamond symbols and the triangles?
What is the difference between the source rocks represented by the diamond symbols and the triangles?
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What is the implication of the two parallel data trends in the TOC-S2 cross-plot?
What is the implication of the two parallel data trends in the TOC-S2 cross-plot?
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What happens to certain materials at higher temperatures in relation to the S2 peaks?
What happens to certain materials at higher temperatures in relation to the S2 peaks?
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What is the likely outcome when certain materials are heated to high temperatures?
What is the likely outcome when certain materials are heated to high temperatures?
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What is the role of temperature in the analysis of S2 peaks?
What is the role of temperature in the analysis of S2 peaks?
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What is the consequence of volatilizing certain materials at high temperatures?
What is the consequence of volatilizing certain materials at high temperatures?
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What is the relationship between temperature and the inclusion of certain materials in the S2 peaks?
What is the relationship between temperature and the inclusion of certain materials in the S2 peaks?
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Study Notes
Organic Matter in Sedimentary Rocks
- Decayed spores, pollen, and algal matter are components of organic matter in sedimentary rocks.
Vitrinite
- Derived from land plants
- Vitrinite reflectance is a measure of the percentage of incident light reflected from the surface of vitrinite particles in a sedimentary rock
- Reflectivity of at least 30 individual grains of vitrinite from a rock sample is measured under a microscope to determine vitrinite reflectance
Inertinite
- Shows high reflectance, little or no fluorescence, high carbon, and low hydrogen contents
- Strong aromatization is a characteristic of Inertinite
- Origin of Inertinite has been a subject of considerable controversy
Total Organic Carbon (TOC) and S2 Cross-Plot
- A cross-plot of TOC and S2 shows isohydrogen index lines
- Two parallel data trends in the cross-plot indicate different mixes of kerogens
- Source rocks with diamond symbols are more oil-prone, while those with triangles are gas-prone to inert
- Materials would be volatilized at higher temperatures and included in the S2 peaks
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Description
This quiz covers the different types of macerals found in coal, including vitrinite, inertinite, and their characteristics. Learn about the origins and properties of these macerals.
