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 over form as reflecting only actual sales in "substance" (that is, items delivered to outside parties for payment), and not events that merely fit the "form" of sales documentation for convenience or expedience. The principle strictly governs and resolves disputes of whether workers are independent contractors or employees: Tax law forbids accounting for persons who are "substantially" employees in the "form" of independent contractors. The question of which "form" may be applied to any given case submits to objective tests of the "substance" of the work. Hence substance, over form, is the rule. Substance over form Substance over form is an accounting