Geological Map of Spain. Scale 1:50.000 - Sheet 474 - FREGENEDA

The sheet 474 (FREGENEDA) of the National Geological Map (MAGNA), was made in 2005 and published in 2009 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2005年编制、2009年发布了国家地质图（MAGNA）的第474幅图幅（FREGENEDA）。该图件采用1:5万比例尺发行，其展示了地表出露的物质（岩石与沉积物）的属性、空间分布特征，以及所绘不同制图单元间的几何关系。 地质制图单元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进行表达。每一个制图单元及各类地质构造均通过专属图示符号在图上表征。将这些制图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、勘探钻孔等资料进行补充完善。本图的图例为一套图示符号体系，用于表征不同制图单元的空间关系，包括年代序列、叠置关系、几何关联、岩相横向变化等。图例同时涵盖了该图幅在区域地质格架中的构造、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，二者不可分割。该系列图件涵盖了地表地质的全部内容，并可提供关于地表形态的结构化精准信息。其编制基于地貌成因与地貌年代学，采用源自地质图的表格/图例形式，配套包含对应的年代地层柱。侵蚀与沉积成因的地表形态，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要素进行个性化表征。 MAGNA系列的每一幅图幅均配有公开出版、经过编辑且为数字格式的说明报告。 该数字信息以覆盖数据集（coverage）与ESRI Shapefile格式存储。另有一份指南对数字信息的物理结构及其编码规则进行说明。