Geological Map of Spain. Scale 1:50.000 - Sheet 168 - BRIVIESCA

The sheet 168 (BRIVIESCA) of the National Geological Map (MAGNA), was made in 1979 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（Geological Survey of Spain）于1979年编制、2009年正式发布的国家地质图（National Geological Map, MAGNA）第168幅（编号BRIVIESCA），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）的属性、空间分布特征，以及各制图单元间的几何关系。 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体，以对应比例尺或既定分辨率在图上表示。每一个填图单元以及各类地质构造，均通过专属的图式符号在地图上进行表达。将这些单元绘制在地形底图上，可提供一定的三维信息，该信息可通过其他地质数据、地质剖面、地层剖面、钻孔等资料进行补充完善。地图图例以象形图的形式，展示了不同填图单元的空间关系（包括年代序列、叠置关系、几何关系、侧向相变化等），同时还包含了该图幅在区域格架中的构造、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紧密结合，不可分割。该图涵盖了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，并采用借鉴地质图的表格/图例中包含的对应年代地层柱，将相关信息融入图件。地表的侵蚀与沉积地貌形态，通过专属符号、色彩图案以及可提供信息的地表沉积物或岩性地层单元元素进行单独表示。 MAGNA系列的每一幅图幅均配有正式出版、经过编辑且采用数字格式的说明报告。 该数字数据以ArcGIS覆盖数据格式（coverage）与ESRI Shapefile格式（Shape format）存储，同时配有一份指南，用于说明数字数据的物理结构与编码规则。