Geological Map of Spain. Scale 1:50.000 - Sheet 153 - CERDEDO

The sheet 153 (CERDEDO) of the National Geological Map (MAGNA), was made in 1982 and published in 2008 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（Geological Survey of Spain）于1982年编制、2008年正式发布的国家地质图系列（MAGNA）第153幅（编号CERDEDO），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，以及不同制图单元间的几何关系。 地质填图单元（geological mapping unit）是指具有共同年代范围的一种或多种岩性的集合体，以对应比例尺或既定分辨率在图件中予以表示。各填图单元及不同地质构造均通过专属的图式符号在图上进行表达。将上述单元绘于地形底图之上，可提供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、地层剖面及勘探点等予以补充完善。本图的图例为象形符号体系，用于展示不同填图单元的空间关系，包括年代序列、叠置关系、几何联系及侧向相变等；图例同时涵盖了区域地质格架下该图幅的构造、水文地质及地质位置信息。 自1991年起，MAGNA国家地质图系列与同比例尺地貌图一体化编制，不可分割。该一体化图件整合了所有地表地质信息，并提供了结构化且精准的地貌形态信息。其编制基于地貌成因（morphogenesis）与地貌年代学（morphocronology），参考地质图的图例表格设置了对应的年代地层柱（chronostratigraphic column），用于图件的内容组织。侵蚀与沉积成因的地貌形态均通过专属符号、色彩样式以及能提供相关信息的地表沉积物或岩性地层要素进行表达。 MAGNA系列的每一幅图件均配有正式发布、经过编辑且为数字格式的说明报告。该数字信息以Coverage与Shapefile（ESRI）格式存储，另有配套指南对该数字信息的物理结构与编码规则进行说明。