Calcium carbonate characteristically accumulates in the second-highest of these regions in substances called pedocals, and ones smaller than two inches thick are sometimes called "pans.
One classification system for these constructs adds to their names letter suffixes, like c, e, h, p, and s, the latter of which denotes sesquioxide accumulation. The three most popular classifications for these constructs are the American, Australian, and Stellenbosch University ones. The smaller "E" type of these constructs is present when there is pronounced eluviation of iron and aluminum. Boundaries between these regions are difficult to detect in so-called laterite or oxisol materials. Calcium carbonate characteristically accumulates in the second-highest of these regions in substances called pedocals, and ones smaller than two inches thick are sometimes called "pans." They are most basically arranged in the sequence of O-A-B-C-R from top to bottom; the topmost "O" stands for "organic" contains plant and animal life. For 10 points, name these strata of varying organic and mineral composition in dirt.
One classification system for these constructs adds to their names letter suffixes, like c, e, h, p, and s, the latter of which denotes sesquioxide accumulation.
{soil horizon}s [prompt on {horizon}s; don’t accept specific ones]