Podcast
Questions and Answers
What is Mudstone?
What is Mudstone?
Mud supported, contains less than 10% grains
What defines a Wackestone?
What defines a Wackestone?
Mud supported, contains more than 10% grains
What is the composition of Packstone?
What is the composition of Packstone?
Grain supported, contains some mud
What characterizes a Grainstone?
What characterizes a Grainstone?
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What is Floatstone?
What is Floatstone?
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What does Rudstone refer to?
What does Rudstone refer to?
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Define Bafflestone.
Define Bafflestone.
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What is Bindstone?
What is Bindstone?
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What characterizes Framestone?
What characterizes Framestone?
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Study Notes
Dunham Classification for Carbonate Rocks
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Mudstone: Characterized as mud-supported with less than 10% grains; often forms in low-energy environments.
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Wackestone: A mud-supported rock containing more than 10% grains; typically indicates moderate energy conditions during deposition.
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Packstone: Grain-supported, meaning it contains some mud, often found in environments where grain abundance is significant.
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Grainstone: Completely lacks mud and is fully grain-supported; suggests high-energy environments conducive to grain accumulation.
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Floatstone: Matrix-supported with greater than 10% grains sized over 2mm; indicative of a type of sedimentary debris.
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Rudstone: Clast-supported carbonate rock with components larger than 2mm; typically formed from larger fragments rather than fine sediment.
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Bafflestone: Supported by organisms acting as baffles; a subtype of boundstone where biological interference influences sediment deposit patterns.
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Bindstone: Characterized by organisms that encrust and bind materials together, creating a cohesive structure within the rock.
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Framestone: Supported by organisms that construct a rigid framework, contributing to the stability and structure of the carbonate rock.
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Test your knowledge on the Dunham classification system for carbonate rocks with these flashcards. Each card provides a definition and helps you distinguish between various types of carbonate rock based on their composition. Perfect for students and professionals in geology and earth sciences!
