Téléchargez le livre : Holocene Sea-level Scenarios in Bangladesh

Holocene Sea-level Scenarios in Bangladesh



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Springer


Collection :

SpringerBriefs in Oceanography

Paru le : 2014-01-06



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Description
This Brief deals with the reconstruction of Holocene paleoenvironment in the central part of Bangladesh in relation to relative sea-level (RSL) changes which is 200 km north from the present coastline. Lithofacies characteristics, mangal peat, diatom and paleophysiographical evidences were considered to reconstruct the past position and C-14 ages were used to determine the time of formation of the relative sea-level during the Holocene. With standard reference datum the required m.s.l. at the surface of five sections are calculate and the RSL curve suggests that Bangladesh has experienced two mid Holocene RSL transgressions punctuated by regressions. The abundant marine diatom and mangrove pollens indicates that the highest RSL transgression in Bangladesh is around 6000 cal BP which is attained at least 4.5 to 5m higher than the modern m.s.l. After this phase, the relative sea-level started to fall and consequently a freshwater peat developed around 5980?5700 cal BP. The abundant mangrove pollens in salt-marsh succession shows the regression around 5500 cal BP and, the height was 1?2 m higher than the modern sea level. These and more interesting findings are discussed in this Brief.
Pages
78 pages
Collection
SpringerBriefs in Oceanography
Parution
2014-01-06
Marque
Springer
EAN papier
9789814560986
EAN EPUB
9789814560993
Informations sur l'ebook
Nombre pages copiables
0
Nombre pages imprimables
7
Taille du fichier
2970 Ko
Ce livre est accessible aux handicaps Voir les informations sur l'accessibilité
Prix
52,74 €

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