12.5: accidentes geográficos costeros deposicionales
- Page ID
- 90192
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Las escupideras son crestas de arena proyectadas desde tierra hacia la bahía (Figura 12.23).
Una barra de boca de bahía es una barra de arena que se extiende a través de una bahía, separándola del océano (Figura 12.24).
Las islas barrera son crestas de islas de arena que corren paralelas a la costa (Figura 12.25). En lugares donde las entradas ocurren cortando barras de la boca de la bahía o islas de barrera, los deltas mareales pueden acumular sedimentos en ambos extremos de una entrada. Los deltas de marea de reflujo se forman a medida que la corriente de marea saliente se erosiona y mueve y deposita arena en el lado de mar de una entrada. Los deltas de marea inundable se forman donde las corrientes de marea entrantes transportan sedimentos erosionados desde el lado oceano-playa de una entrada de barrera e isla y los depositan en la laguna o lado de la bahía de una entrada.