Stratigraphy is a branch of geology concerned with the study of rock layers strata 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. Catholic priest Nicholas Steno established the theoretical basis for stratigraphy when he introduced the law of superposition , the principle of original horizontality and the principle of lateral continuity in a work on the fossilization of organic remains in layers of sediment. The first practical large-scale application of stratigraphy was by William Smith in the s and early 19th century. Known as the "Father of English geology",  Smith recognized the significance of strata or rock layering and the importance of fossil markers for correlating strata; he created the first geologic map of England.
Fue declarada Patrimonio de la Humanidad por la Unesco en Sautuola y sus pocos seguidores lucharon contra esa sentencia. Sin embargo, su valor fue avalado por los frecuentes hallazgos de otras piezas de arte mueble similares en numerosas cuevas europeas. Mea culpa d'un sceptique La cueva de Altamira. Estas cuestiones afectaron, no solo a la cueva de Altamira, sino a todo el arte rupestre cuaternario descubierto.
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