6.15: Procesos Sedimentarios y Estructuras Sedimentarias
- Page ID
- 89742
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Laminación y ropa de cama
¡Los sedimentos se depositan en capas que van desde láminas delgadas como papel hasta macizos de decenas a cientos de pies de espesor! Una lámina (o laminación) es una capa de sedimento o capa de roca sedimentaria de solo una pequeña fracción de pulgada (menos de un centímetro) de espesor (ver Figura 6.57). La laminación delgada se asocia típicamente con sedimentos de grano fino depositados en ambientes tranquilos o de aguas bajas, como en una cuenca lacustre o costa afuera bajo la influencia de las olas y las fuertes corrientes. El lecho es la división más pequeña de una formación rocosa sedimentaria o serie de rocas estratigráficas marcadas por planos divisionales bien definidos (planos de lecho) que la separan de las capas arriba y abajo (ver Figura 6.58).