Imagine a soil pit dug in a vacant brown field in an old city industrial area. The horizons you observe include, from the soil surface down: (1) 19 cm of dark-colored organic enriched loamy material...

Imagine a soil pit dug in a vacant brown field in an old city industrial area. The horizons you observe include, from the soil surface down: (1) 19 cm of dark-colored organic enriched loamy material with nails and broken glass embedded in it; (2) 32 cm of sandy loam with bits of red brick, some broken glass, some rusting metal pieces, and rusty red and yellow stains on most of the sand grain surfaces giving the layer a yellow-red color; (3) 15cm of dark brown silt loam material rich in organic matter with an abrupt boundary to; (4) 50 cm of light brown silty clay loam material with clay coatings in the cracks between blocky chunks of soil material. Draw this profile in a simple diagram and label the four layers with master horizon and sub horizon letters and other appropriate symbols to indicate your best interpretation of soil formation at this site.