Geological Map of Spain. Scale 1:50.000 - Sheet 916 - AROCHE

The sheet 916 (AROCHE) of the National Geological Map (MAGNA), was made in 1983 and published in 1995 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.西班牙国家地质图（MAGNA）的第916幅图幅（AROCHE）由西班牙地质调查局于1983年编制完成，1995年正式发布，比例尺为1:5万。该地质图展示了地表出露物质（岩石与沉积物）的属性、空间分布特征，以及各制图单元间的几何联系。 地质填图单元是指具有共同年代区间的一种或多种岩性的集合体，在地图上以对应比例尺或既定分辨率进行表达。每一个填图单元以及各类地质构造，均通过专属符号系统在图上予以表示。将此类填图单元叠加于地形底图之上，可获取一定的三维地表信息，该类信息可通过其他地质数据、地质剖面、地层柱状图、钻孔资料等进行补充完善。本图的图例为象形图标集，用于阐释不同填图单元的空间关系，涵盖年代序列、叠置关系、几何联系、侧向相变等内容，同时还包含构造、水文地质信息，以及该图幅在区域地质格架中的地理位置。 自1991年起，MAGNA系列地质图与同比例尺地貌图实现一体化编制。该系列图件完整涵盖地表全部地质内容，可提供关于地表形态的结构化精准信息。其编制以地貌成因学与地貌年代学为基础，依托参考地质图的图例表格所附的对应年代地层柱，将相关信息纳入图件之中。各类地表形态（包括侵蚀成因与沉积成因）均通过专属符号、色彩样式，以及能够提供相关信息的地表沉积物或岩性地层单元进行个性化表达。 针对MAGNA系列的每一幅图幅，均配有公开出版、经过专业编辑的数字格式配套说明报告。 数字信息以Coverage与Shapefile（ESRI）格式存储，另有配套指南对数字信息的物理结构及其编码规则进行详细说明。