Geomorphology of marine and transitional terraces and raised shorelines between Punta Paulo and Porvenir, Tierra del Fuego, Straits of Magellan – Chile
Geomorphology of marine and transitional terraces and raised shorelines between Punta Paulo and Porvenir, Tierra del Fuego, Straits of Magellan – Chile
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智利麦哲伦海峡火地岛蓬塔保罗和波韦尼尔之间的海洋和过渡阶地以及凸起海岸线的地貌
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发表时间：
2017
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通讯作者：
A. Ibba
中科院分区：
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作者：
S. Demuro;A. Brambati;Sira Tecchiato;Marco Porta;A. Ibba
摘要本文介绍了一个沿海地形图的一些智利地区的麦哲伦海峡，是基于一个相结合的地貌和沉积方法适用于一个更大的部分海岸。地图上的区域位于麦哲伦海峡的Segunda Angostura和Bahía Inútil之间的火地岛。以1：50，000的比例编制了详细的地貌图，描述了4个海洋和过渡（冰湖到海洋）阶地序列以及在0 m至+20 m之间发现的凸起海洋海岸线。 这些特征主要与冰川-古陆运动有关，其次与全新世新构造运动有关。本研究系以航片、遥感影像判读为基础，结合野外地貌地层调查及地球化学资料，进行沿着。主地图显示了一个具有主要古冰川和冰川湖泊形态的地区，该地区具有广泛的湖泊沉积物和发育良好的湖泊系统，是Porvenir地区的特征。
ABSTRACT This paper presents a coastal geomorphology map of some of the Chilean region of the Straits of Magellan, and is based on a combined geomorphological and sedimentological approach applicable to a larger section of the coast. The mapped area is located in Tierra del Fuego between the Segunda Angostura of the Straits of Magellan and Bahía Inútil. A detailed geomorphological map was compiled at a scale of 1:50,000, describing a sequence of 4 marine and transitional (glacio-lacustrine to marine) terrace orders and raised marine shorelines found between 0 and + 20 m. These features are mainly linked to glacio-eustasy and secondarily to Holocene neo-tectonics. This research derives from the interpretation of aerial photographs and remote sensing imagery along with geomorphological-stratigraphic field surveys and geochemical data. The Main Map illustrates an area with dominant palaeo-glacial and glacio-lacustrine morphology with extensive lacustrine deposits and well-developed lake systems characterising the Porvenir region.