Tag Archives: classification

Classification of Sedimentary Rocks

Sedimentary rocks are classified by their genesis: how they formed. All sedimentary rocks are made from the components of other, pre-existing rocks, that have been broken down, transported, and reassembled into new rocks. The classification of the rock gives information … Continue reading

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Carbonate Classification

Compare and contrast the carbonate classification schemes of Folk and Dunham. Carbonate rocks are composed of allochems and orthochems. Allochems are the outside components, effectively grains that are the equivalent of clasts in sandstones. Orthochems are the inside components, the … Continue reading

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Sandstone Maturity

With reference to quartz arenites, feldspathic arenites and lithic arenites, explain what is meant by “sandstone maturity.” Mineralogy & Weathering Supracrustal rocks are those formed at the surface. Subcrustal rocks are those formed below the surface. Where minerals form impact … Continue reading

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That’s not a flowslide, it’s a sad red troll!

There’s a problem with landslides. Okay, there are many problems with landslides, and I’m sure many would count “annual odds of death by landslide are one in a million” as a significant problem, but that’s not the one I’m tackling … Continue reading

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