The study of layered rocks, their distribution, origin, fossil content, and relative age. Stratification – The arrangement of rocks in distinct layers or strata, resulting from the action of water or wind. Common in sedimentary rocks.
The study of sequences of rock and their history. Commonly applied to sedimentary rocks, but igneous and metamorphic sequences are studied as well. The concept of stratigraphy includes some of the most important tenets in geology: that sedimentary strata were originally deposited horizontally, that older beds underlie younger beds, and that older rocks are cross-cut by younger ones.
The study of the layering of rocks and soils to determine how they were laid down, what they are made of and how old they are. This study is vitally important in geology to determine how old a rock structure is, and how it was formed as well as providing information about any fossils found in the rock layers.
The study, definition, and description of major and minor natural divisions of rocks, particularly the study of their form, arrangement, geographic distribution, chronologic succession, classification, correlation, and mutual relationships of rock strata.
(stra·TI·graphy). The study of the arrangement of rock and/or soil layers together with the study of their origin, the order of their deposition, and their functional and chronological relationships to one another.
The study and interpretation of layered deposits. Stratigraphic information can be used to establish the relative ages of different deposits and to determine when and how features and structures filled with sediment after they were abandoned.
Stratigraphy refers to the interpretion of the layers in archaeological deposits. The artifacts found on top are usually the youngest (more recent) while those on the bottom are the oldest. If the stratigraphy gets mixed up, for example, if someone digs a hole down into it then interpretation is much more difficult and sometimes impossible. Artifacts are no longer in context. By examining and analyzing the layers and the artifacts in them, archaeologists can learn how past people lived and what kinds of things they did.
The study of a series of layers of archaeological deposits. The assumption is usually made that the vertical section can be considered a slice through time demonstrated by various horizontal layers. The deepest of these layers in a simple stratigraphic section would normally be the earliest. It is often possible to date these horizontal layers by artefact content.
(a) The science of rock strata. It is concerned not only with the original succession and age relations of rock strata but also with their form, distribution, lithologic composition, fossil content, geophysical and geochemical properties -- indeed, with all characters and attributes of rocks as strata; and their interpretation in terms of environment or mode of origin, and geologic history. All classes of rocks, consolidated or unconsolidated, fall within the general scope of stratigraphy. Some nonstratiform rock bodies are considered because of their association with or close relation to rock strata. (b) The arrangement of strata, esp. as to geographic position and chronologic order of sequence. (c) The sum of the characteristics studied in stratigraphy; the part of the geology of an area or district pertaining to the character of its stratified rocks. (d) A term sometimes used to signify the study of historical geology.
A study of the formation, composition, sequence and correlation of stratified sediment, soils and rocks. Stratigraphy is the principal means by which the context of archaeological deposits is evaluated, chronologies are constructed and events sequenced.
The study of layers, sequentially deposited over time. This is very helpful for land archaeology. Under water it can also be useful, but it's more complicated and often confusing because of current and sea movement. This is explained in: Archaeology Underwater â€“ the NAS Guide to Principles and Practice (1992) and Keith Branigan's Archaeology Explained (Duckworth 1973, 1988).
scientific classification of rock or sediment strata according to attributes of the strata: Lithostratigraphy = Organization of strata into units based on their lithological character. Biostratigraphy = Organization of strata into units based on their fossil content. Chronostratigraphy = Organization of strata into units based on their age (time). Morphostratigraphy = Organization of strata into units based on their surface morphology (landforms).
Stratigraphy is a method of dating fossils by observing how deeply a fossil is buried. Sedimentary rock layers (strata) are formed episodically as earth is deposited horizontally over time. Newer layers are formed on top of older layers, pressurizing them into rocks. Paleontologists can estimate the amount of time that has passed since the stratum containing the fossil was formed. Generally, deeper rocks and fossils are older than fossils found above them.
Refers to the interpretation of the layers in archaeological deposits. By examining and analyzing the layers (strata) and the artifacts in them, archaeologists can learn how past people lived and what kinds of things they did. Usually, the artifacts found on top are the youngest (most recent), while those on the bottom are the oldest. If the stratigraphy gets mixed up (for example, if someone digs a hole down into it) then interpretation becomes much more difficult, and sometimes impossible. If this happens, artifacts are no longer in context.
the study of the layers of sediment in an archeological site. Stratigraphy provides relative dating information: objects found in strata (or layers) overlaying other objects must have been deposited later.
Stratigraphy, a branch of geology, is basically the study of rock layers and layering (stratification). It is primarily used in the study of sedimentary and layered volcanic rocks. Stratigraphy includes two related subfields: lithologic or lithostratigraphy and biologic stratigraphy or biostratigraphy.