Geological Map of Spain. Scale 1:50.000 - Sheet 290 - ISONA

The sheet 290 (ISONA) of the National Geological Map (MAGNA), was made in 2013 and published in 2014 by the Geological Survey of Spain. It is distributed at scale 50000. The geological map shows the nature of materials (rocks and sediments) that appear on the surface, their spatial distribution and geometric relationships between the different cartographic units represented. A geological mapping unit is the grouping of one or more lithologies with common age range, which is represented on the map at a scale or defined resolution. Each mapping unit, and the different geological structures, is represented on the map with a symbolism itself. The representation of these units on the topographic base map provides some three-dimensional information that is completed with other geological data and geological sections, stratigraphic profiles, polls, etc. The map legend is a pictogram representing the spatial relationship of the different mapping units (chronology, overlapping, geometric relationship, lateral facies changes, etc.). It also includes structural, hydrogeological and geological location of the sheet within the regional schemes. Since 1991, the Geological Map Series MAGNA is made inseparably with the geomorphological map on the same scale. This map incorporates everything on the surface geology and provides a structured and accurate information of the land forms. It is organized on the basis of morphogenesis and morphocronology incorporated the map using the corresponding chronostratigraphic column included in a table / legend inspired by the geological map. The forms, erosional and depositional, are represented on the map by individualized by symbols and patterns of color and surface deposits or lithological formations elements that provide information. For each sheet of the series MAGNA there is an explanatory report published, edited and in digital format. The digital information is stored in coverage and Shape format (ESRI). There is a guide that describes the physical structure of the digital information and its codification.西班牙地质调查局于2013年编制、2014年发布的国家地质图（National Geological Map，简称MAGNA）第290幅（ISONA），比例尺为1:50000。该地质图展示了地表出露的物质（岩石与沉积物）类型、空间分布特征，以及各制图单元间的几何关联。 地质填图单元是指具有共同年代范围的一种或多种岩性的集合，在该比例尺或既定分辨率下被绘于图中。每个填图单元及各类地质构造均通过专属符号系统在图上呈现。将这些单元叠加于地形底图之上，可获取一定的三维空间信息，此类信息可通过其他地质数据、地质剖面、地层柱状图、钻孔资料等予以补充完善。本图图例为象形图标，用于展示不同填图单元的空间关系（涵盖年代序列、叠置关系、几何关联、侧向相变等），同时还涵盖了该幅图件在区域格架内的构造、水文地质信息及地质位置。 自1991年起，MAGNA国家地质图系列便与同比例尺地貌图绑定编制。该图件整合了所有地表地质信息，可提供关于地表形态的结构化精准数据。其编制以地貌成因与地貌年代学为基础，参考地质图配套的表格/图例中收录的对应年代地层柱，将相关信息纳入图中。地表的侵蚀与沉积形态通过专属符号、色彩样式以及可提供相关信息的地表沉积物或岩性地层单元进行区分表示。 MAGNA系列的每一幅图件均配有正式发布、编辑完成的数字版说明报告。 该数字信息以coverage及Shape格式（ESRI）存储，另有配套指南对数字信息的物理结构与编码规则进行详细说明。