智利瓦尔帕莱索地区圣多明各海滩沙丘系带的特征、起源和年代

Roland P. Paskoff, H. Manriquez, L. Cuitino, Robert Petiot
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引用次数: 5

摘要

智利中部圣多明各海滩的西班牙系沙丘线实现了从全新世到历史时期海岸线推进的阶段,使用14C方法进行了绝对年代测定。它的黑色沙子来自火山灰。这些eolicas形态可能与与位于拉佩尔河流域上游的Tinguiririca火山间歇性活动有关的痉挛沉积脉冲有关。人类活动可以解释古老沙丘的不稳定和它们形成的海侵抛物线沙丘。中央EnglishForedunes of Santo Domingo beach in智利蒯庆华steps of prograding coastline in Holocene time up to the历史期间,as suggested by烷绝对datings。= =地理= =根据美国人口普查,这个县的总面积是,其中土地和(1.641平方公里)水。= =地理= =根据美国人口普查,该地区的总面积为,其中土地和(2.641平方公里)水。= =地理= =根据美国人口普查,这个县的总面积为,其中土地和(2.641平方公里)水。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Características, origen y cronología de los cordones dunares de la playa de Santo Domingo, Región de Valparaíso, Chile
espanolLos cordones dunares de la playa de Santo Domingo en Chile central materializan etapas en la progradacion de la linea de costa durante el Holoceno hasta la epoca historica, como lo sugieren dataciones absolutas, usando el metodo 14C. Sus arenas negras derivan de cenizas volcanicas. Estas formas eolicas se relacionan, probablemente, con pulsos sedimentarios espasmodicos vinculados con la actividad episodica del volcan Tinguiririca localizado aguas arriba en la cuenca del rio Rapel. Acciones antropicas pueden explicar la desestabilizacion de los cordones mas antiguos y la formacion de dunas parabolicas transgresivas a partir de ellos. EnglishForedunes of Santo Domingo beach in central Chile represent steps of a prograding coastline in Holocene time up to the historical period, as suggested by 14C absolute datings. They are made of black sands which derive from volcanic ashes. These aeolian forms are probably linked with spasmodic sedimentary flows related to the episodic activity of Tinguiririca volcano located upstream in the watershed of the Rapel river. Human action may account for the disestabilization of the oldest foredunes and the formation of transgressive parabolic dunes.
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