Marine regression is a geological process occurring when areas of submerged seafloor are exposed above the sea level. The opposite event, marine transgression, occurs when flooding from the sea covers previously exposed land.

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  • Als Regression (von lat. regredior, zurückschreiten) wird in der Geologie das seewärtige Zurückweichen einer Küstenlinie und die dadurch ausgelösten Veränderungen in der Sedimentationsdynamik des davon betroffenen Sedimentbeckens bezeichnet. Eine Regression kann Folge der fortschreitenden Einschüttung von Sedimenten in den Küstenbereich einer Landmasse (engl. normal regression, vgl. →Progradation), der tektonischen Anhebung einer Landmasse oder einer Absenkung des globalen (eustatischen) Meeresspiegels, z. B. durch die klimatisch bedingte Bindung von Wasser in kontinentalen Eismassen sein (beides engl. forced regression). Eine Regression äußert sich in der Sedimentabfolge durch einen Umschwung von z. B. einem eher marinen Ablagerungsmilieu zu einem eher terrestrischen Ablagerungsmilieu oder nicht selten auch in Form von Schichtlücken. Im Gegensatz dazu steht die Transgression, bei der die Küstenlinie landeinwärts wandert. (de)
  • Une régression marine est un retrait durable de la mer en dessous de ses limites antérieures, se traduisant par un abaissement de la ligne de côte et l'augmentation de la surface des terres émergées. Ce retrait peut être la conséquence : * d'un abaissement général du niveau des océans ; * de l'abaissement du niveau d'une mer fermée ou semi-fermée, dû à un déséquilibre entre les apports et les pertes, notamment par évaporation ; * d'un soulèvement de la croûte terrestre. Il s'agit d'un des mouvements de l'épirogénèse. (fr)
  • La regressione marina è un evento geologico nel corso del quale il livello del mare si abbassa portando in superficie quelle che prima erano superfici sommerse. Le regressioni possono essere causate da un effettivo abbassamento del livello del mare, come ad esempio nel corso di una glaciazione, oppure da un sollevamento della crosta terrestre a seguito di movimenti tettonici. A seguito di una regressione la porzione di crosta portata in superficie subisce processi di erosione e, in funzione delle condizioni ambientali e della durata della regressione, accumulo di sedimenti da cui si originano facies sedimentarie di tipo continentale, come le facies alluvionali, generate dalla sedimentazione di clasti trasportati dai fiumi, e le facies desertiche, generate dal deposito di sabbia trasportata dal vento. Il fenomeno opposto, cioè l'innalzamento del livello del mare, è chiamato trasgressione marina.In una successione stratigrafica, il passaggio da una trasgressione ad una regressione è, in genere, indicato dalla presenza di facies di transizione, indicative di ambienti sedimentari marini tipici via via di acque meno profonde col passare del tempo, fino ad arrivare talvolta a sedimenti di ambiente continentale subaereo, mentre il passaggio inverso inizia spesso con una discordanza angolare. (it)
  • Regressie is het verschuiven van een kustlijn van meer continentaal naar meer bekkenwaarts. Dit hoeft niet direct een dalende zeespiegel te betekenen. Gedurende de geologische geschiedenis wisselden perioden van transgressie en regressie elkaar af. Deze afwisselingen hebben zich zowel regelmatig (cyclisch) als onregelmatig voorgedaan. In sedimentaire gesteenten zijn perioden van regressie te herkennen aan de erosieve vlakken (Engels: Erosional surfaces), een term uit de sequentiestratigrafie (Engels: sequence stratigraphy). (nl)
  • Regresja morza - wycofanie się morza z poprzednio zalanych terenów. Zachodzi wskutek ruchów pionowych skorupy ziemskiej albo ruchów eustatycznych, spowodowanych globalnym ochłodzeniem się klimatu. Regresja jest przeciwieństwem transgresji morskiej. (pl)
  • A regressão marinha é um processo geológico causado pelo solo que sobe em relação ao nível do mar ou pela água acumulando-se na forma de gelo nos continentes. Em outras palavras: o nível do mar diminui em relação à terra e expõe fundo do mar anterior. O oposto da regressão marinha é a transgressão marinha. Durante a Idade do gelo do Pleistoceno, tanto foi removido dos oceanos e armazenados em terra que as geleiras do Oceano regrediu de 120 metros, expondo o Estreito de Bering, entre Alasca e na Ásia. A regressão marinha promoveu regressões marinhas importantes no decorrer do período Quaternário. Esse fato é designado como eustatismo glacial, e também conhecido por eustatismo de deformação lenta dos fundos oceânicos, o qual representa o abaixamento ou o soerguimento lento do fundo da bacia oceânica. (pt)
  • Marine regression is a geological process occurring when areas of submerged seafloor are exposed above the sea level. The opposite event, marine transgression, occurs when flooding from the sea covers previously exposed land. Evidence of marine regressions and transgressions occurs throughout the fossil record, and these fluctuations are thought to have caused or contributed to several mass extinctions, among them the Permian-Triassic extinction event (250 million years ago) and Cretaceous–Paleogene extinction event (66 Ma). At the time of the Permian-Triassic extinction, the largest extinction event in the Earth's history, global sea level fell 250 m (820 ft). A major regression could itself cause marine organisms in shallow seas to go extinct, but mass extinctions tend to involve both terrestrial and aquatic species, and it is harder to see how a marine regression could cause widespread extinctions of land animals. Regressions are, therefore, seen as correlates or symptoms of major extinctions, rather than primary causes. The Permian regression might have been related to the formation of Pangaea: the accumulation of all the major landmasses into one body could have facilitated a regression, by providing "a slight enlargement of the ocean basins as the great continents coalesced." However, that cause could not have applied in all, or even many, other cases. During the ice ages of the Pleistocene, a clear correlation existed between marine regressions and episodes of glaciation; as the balance shifts between the global cryosphere and hydrosphere, more of the planet's water in ice sheets means less in the oceans. At the height of the last ice age, at around 18,000 years before the present, the global sea level was 120 to 130 m (390-425 ft) lower than today. A cold spell around 6 million years ago was linked to an advance in glaciation, a marine regression, and the start of the Messinian salinity crisis in the Mediterranean basin. Some major regressions of the past, however, seem unrelated to glaciation episodes — the regression that accompanied the mass extinction at the end of the Cretaceous Period being one example. A clear and certain understanding of major marine regressions has not yet been achieved; according to one hypothesis, regressions may be linked to a "slowdown in sea-floor spreading, leading to a generalized drop in sea level (as the mid-ocean ridges would take up less space)...." In that view, major marine regressions are one aspect of a normal variation in rates of plate tectonic activity, which lead to major episodes of global volcanism like the Siberian Traps and the Deccan Traps, which in turn cause large extinction events. (en)
  • Регрессия моря (лат. regressio — обратное движение, отход) — отступание моря от берегов, понижение уровня моря относительно берега, имеющее следствием изменение береговой линии. Регрессия моря происходит из-за поднятия суши, опускания дна океана (из-за подводных землетрясений) или уменьшения объёма воды в океанических бассейнах (в периоды ледниковых эпох). Регрессии моря часто происходили в различных районах Земли на протяжении всей её геологической истории. В частности, регрессии подвергалось Чёрное море (уровень моря в эпоху античности был ниже современного на 10-15 м). (ru)
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  • Une régression marine est un retrait durable de la mer en dessous de ses limites antérieures, se traduisant par un abaissement de la ligne de côte et l'augmentation de la surface des terres émergées. Ce retrait peut être la conséquence : * d'un abaissement général du niveau des océans ; * de l'abaissement du niveau d'une mer fermée ou semi-fermée, dû à un déséquilibre entre les apports et les pertes, notamment par évaporation ; * d'un soulèvement de la croûte terrestre. Il s'agit d'un des mouvements de l'épirogénèse. (fr)
  • Regressie is het verschuiven van een kustlijn van meer continentaal naar meer bekkenwaarts. Dit hoeft niet direct een dalende zeespiegel te betekenen. Gedurende de geologische geschiedenis wisselden perioden van transgressie en regressie elkaar af. Deze afwisselingen hebben zich zowel regelmatig (cyclisch) als onregelmatig voorgedaan. In sedimentaire gesteenten zijn perioden van regressie te herkennen aan de erosieve vlakken (Engels: Erosional surfaces), een term uit de sequentiestratigrafie (Engels: sequence stratigraphy). (nl)
  • Regresja morza - wycofanie się morza z poprzednio zalanych terenów. Zachodzi wskutek ruchów pionowych skorupy ziemskiej albo ruchów eustatycznych, spowodowanych globalnym ochłodzeniem się klimatu. Regresja jest przeciwieństwem transgresji morskiej. (pl)
  • Регрессия моря (лат. regressio — обратное движение, отход) — отступание моря от берегов, понижение уровня моря относительно берега, имеющее следствием изменение береговой линии. Регрессия моря происходит из-за поднятия суши, опускания дна океана (из-за подводных землетрясений) или уменьшения объёма воды в океанических бассейнах (в периоды ледниковых эпох). Регрессии моря часто происходили в различных районах Земли на протяжении всей её геологической истории. В частности, регрессии подвергалось Чёрное море (уровень моря в эпоху античности был ниже современного на 10-15 м). (ru)
  • Als Regression (von lat. regredior, zurückschreiten) wird in der Geologie das seewärtige Zurückweichen einer Küstenlinie und die dadurch ausgelösten Veränderungen in der Sedimentationsdynamik des davon betroffenen Sedimentbeckens bezeichnet. Eine Regression kann Folge der fortschreitenden Einschüttung von Sedimenten in den Küstenbereich einer Landmasse (engl. normal regression, vgl. →Progradation), der tektonischen Anhebung einer Landmasse oder einer Absenkung des globalen (eustatischen) Meeresspiegels, z. B. durch die klimatisch bedingte Bindung von Wasser in kontinentalen Eismassen sein (beides engl. forced regression). (de)
  • Marine regression is a geological process occurring when areas of submerged seafloor are exposed above the sea level. The opposite event, marine transgression, occurs when flooding from the sea covers previously exposed land. (en)
  • La regressione marina è un evento geologico nel corso del quale il livello del mare si abbassa portando in superficie quelle che prima erano superfici sommerse. Le regressioni possono essere causate da un effettivo abbassamento del livello del mare, come ad esempio nel corso di una glaciazione, oppure da un sollevamento della crosta terrestre a seguito di movimenti tettonici. (it)
  • A regressão marinha é um processo geológico causado pelo solo que sobe em relação ao nível do mar ou pela água acumulando-se na forma de gelo nos continentes. Em outras palavras: o nível do mar diminui em relação à terra e expõe fundo do mar anterior. O oposto da regressão marinha é a transgressão marinha. Durante a Idade do gelo do Pleistoceno, tanto foi removido dos oceanos e armazenados em terra que as geleiras do Oceano regrediu de 120 metros, expondo o Estreito de Bering, entre Alasca e na Ásia. (pt)
rdfs:label
  • Regression (Geologie) (de)
  • Régression marine (fr)
  • Regressione marina (it)
  • Marine regression (en)
  • Regressie (geologie) (nl)
  • Regresja morza (pl)
  • Regressão marinha (pt)
  • Регрессия моря (ru)
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