Stratigraphy is the study of rock layers and reconstruction of the original sequence in which they were deposited. It is therefore possible to produce geological maps of the surface of a planet or satellite, and to form a stratigraphic classification to help to understand its history. While the basic rule is that the lowest strata are the oldest, it's important to understand how they are formed and how they relate. For example, studying layers of rock can show when an area changed from a sandy seabed to a muddy swamp. The basic law of stratigraphy, the law of superposition, states that lower layers are older than upper layers, unless the sequence has been overturned. Lithologic Stratigraphy Or Lithostratigraphy Stratigraphy is a branch of geology concerned with the study of rock layers and layering (stratification).It is primarily used in the study of sedimentary and layered volcanic rocks.Stratigraphy has two related subfields: lithostratigraphy (lithologic stratigraphy) and biostratigraphy (biologic stratigraphy). Stratigraphy definition is - geology that deals with the origin, composition, distribution, and succession of strata. define sequence stratigraphy as “… the study of rock relationships within a chronostratigraphic framework of repetitive, genetically related strata bounded by surfaces of erosion or nondeposition, or their correlative unconformities.” Paleogeographic reconstruction of facies belts at precise moments in time is the goal of the … stratigraphy (stră-tig -ră-fee) The study of rock layers (strata).Younger geological units overlie, embay, or intrude older units. That’s because stratigraphy can hint at Earth’s past. Stratigraphy is a branch of geology to description of rock or interpretation geologic time scale.It provides of geologic history of strata.Stratigraphic studies primarily used in the study of sedimentary and volcanic layered rocks. In a sequence of strata any stratum is younger than the sequence of strata on which it rests and is … Van Wagoner et al. Scientists study how these layers were made and how they are organized. Concerned with Physical Stratigraphy- the study of the relationships of strata in time and space (superposition, cross-cutting, etc) Principle of Superposition. It is a discipline that correlates rocks and time, helping us understand how, why, and when a certain configuration of strata came to be. Stratigraphy is the study of geological layers, or strata. Stratigraphy is the study of layered materials (strata) that were deposited over time. Stratigraphy is a branch of geology that deals with the study of rock layers, beds, or strata (singular: stratum). Definition. 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