اختصاصی از نیک فایل Seismic architecture, stratigraphy and evolution of a subtropical marine embayment: Maputo Bay, Mozambique دانلود با لینک مستقیم و پر سرعت .

Seismic architecture, stratigraphy and evolution of a subtropical marine embayment: Maputo Bay, Mozambique

ژورنال:Marine Geology

سال:November 2015

قیمت اصلی:37.95$

Abstract

The seismic stratigraphy, architecture and evolution of a large subtropical embayment, Maputo Bay, Southern Mozambique is described. Nine seismic units are documented; and show repeated phases of incised valley formation and transgressive infilling. Trangressive infilling alternates between the classic wave-dominated transgressive succession of fluvial and central estuarine bay deposits and the filling by intertidal flat and tidal bedforms developed during stages of inlet restriction and shallowing associated with barrier growth at stillstand intervals. Imprinted on the succession are several key facets of subtropical stratigraphy, hurricane-generated erosional surfaces and beachrock horizons. The upper stratigraphy comprises the highstand bayhead delta, a prograding feature constructed by several flood events. In comparison with literature from other similar systems such as lagoons, coastal lakes and estuaries, a generic three stage stratigraphic model of large marine embayments is proposed that includes incisionduring glaciations; transgressive infilling during deglaciations; and shallowing during thestillstand episodes of the recent deglaciation.

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Keywords

• Marine embayments, Seismic architecture, Incised valleys, Transgressive infilling,
• Mozambique