Lithology 7. The naming of a lithology is based on the rock type. The three major rock types are sedimentary, igneous, metamorphic. Sedimentary rocks are further classified by whether they are siliciclastic or carbonate. Siliciclastic sedimentary rocks are then subcategorized based on their grain size distribution and the relative proportions of quartz, feldspar, and lithic (rock) fragments. Carbonate rocks are classified with the Dunham or Folk classification schemes according to the constituents of the carbonate rock. The name of an igneous rock requires information on crystal size and mineralogy. This classification can often be performed with a QAPF diagram. Metamorphic rock
Substance 1987 whose musical style is improved upon by the 12-inch mixes: "Pure rhythm machine with an ironically mysterious overlay of schlocky melody to help it go down, this album is a case study in sensationalist art, and I say the world is better for it." Additionally, he called "Substance" "sublime" and "a revelation" in his column for "Playboy". Christgau named it the seventh best album of 1987 in his list for the annual Pazz & Jop critics poll. In 2003, "Substance" was ranked number 363 on "Rolling Stone"s list of the 500 greatest albums of all time. According to the magazine,