Geological Map of Spain. Scale 1:50.000 - Sheet 46 - GUITIRIZ

The sheet 46 (GUITIRIZ) of the National Geological Map (MAGNA), was made in 1981 and published in 2007 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1981年编制、2007年正式发布国家地质图（MAGNA）的第46幅图件（图幅代号：GUITIRIZ）。该图采用1:5万比例尺发行，内容涵盖地表出露的物质（岩石与沉积物）属性、空间分布特征，以及各类制图单元间的几何关联。 地质填图单元是指具有统一年代区间的一种或多种岩性的集合体，以对应成图比例尺或既定空间分辨率在图件中呈现。每一个填图单元与各类地质构造，均通过专属图式符号在地图上表达。将此类单元绘于地形底图之上，可获取一定的三维空间信息，该类信息可辅以其他地质数据、地质剖面、地层剖面、钻孔与采样点等进一步完善。地图图例以象形符号形式，展示不同填图单元的空间关系（包括年代序列、叠置关系、几何关联、岩相横向变化等），同时还包含该图幅在区域框架内的构造、水文地质与地质位置信息。 自1991年起，MAGNA国家地质图系列与同比例尺地貌图绑定编制，不可分割。该套图件涵盖地表地质的全部内容，可提供结构化且精准的地表形态信息。其编制基于地貌成因与地貌年代学框架，采用源自地质图的表格/图例中的对应年代地层柱来整合相关信息。地图通过专属符号、色彩样式以及可提供辅助信息的地表沉积物或岩性地层要素，对侵蚀与沉积地貌形态进行个性化表达。 MAGNA图系列的每一幅图幅均配有经编辑出版的数字化说明报告。 该数字化数据以Coverage格式（coverage）与Shape格式（ESRI）存储，同时配有一份专业指南，用于说明数字化数据的物理结构及其编码规则。