Principle of original horizontality — A stratigraphic section of Ordovician rock exposed in central Tennessee, USA. The sediments composing these rocks were formed in an ocean and deposited in horizontal layers … Wikipedia
Law of superposition — The law of superposition (or the principle of superposition) is a key axiom based on observations of natural history that is a foundational principle of sedimentary stratigraphy and so of other geology dependent natural sciences: The principle… … Wikipedia
Geology — Oceanic crustContinental Crust] Geology (from Greek: γη, gê , earth ; and λόγος, logos , speech lit. to talk about the earth) is the science and study of the solid and liquid matter that constitute the Earth. The field of geology encompasses the… … Wikipedia
Cross-cutting relationships — Cross cutting relations can be used to determine the relative ages of rock strata and other geological structures. Explanations: A folded rock strata cut by a thrust fault; B large intrusion (cutting through A); C erosional angular unconformity… … Wikipedia
geochronology — geochronologic /jee oh kron l oj ik/, geochronological, adj. geochronologist, n. /jee oh kreuh nol euh jee/, n. the chronology of the earth, as based on both absolute and relative methods of age determination. [1890 95; GEO + CHRONOLOGY] * * *… … Universalium
Age of the Earth — This article is about scientific estimates of the age of the Earth. For religious and other non scientific estimates, see Dating Creation. Earth as seen from Apollo 17 The age of the Earth is 4.54 billion years (4.54 × 109 years ± 1%) … Wikipedia
Stratification (archeology) — In archaeology, especially in the course of excavation, stratification is a paramount and base concept. It is largely based on the Law of Superposition. When archaeological finds are below the surface of the ground (as is most commonly the case) … Wikipedia
Stratigraphie (Archäologie) — Stratigraphie am Rand einer Ausgrabung in Athen Die Stratigraphie ist ein Teilgebiet der Archäologie und hilft bei der relativen archäologischen Altersbestimmung von Ablagerungen. Als archäologische Stratigraphie bezeichnet man die bei einer… … Deutsch Wikipedia
Nicolas Steno — Born 11 January 1638 Copenhagen … Wikipedia
Sedimentology — encompasses the study of modern sediments such as sand [ Raymond Siever, Sand, Scientific American Library, New York (1988), ISBN 0 7167 5021 X.] , mud (silt), [ P.E. Potter, J.B. Maynard, and P.J. Depetris, Mud and Mudstones: Introduction and… … Wikipedia
