Geological Map of Spain Scale 1:200.000 (2nd series)
This Map depicts the materials or rocks that appear on the surface of the sheet, their spatial distribution, nature and geometric relationships. The cartographic units are chronostratigraphic groupings, with common lithology and age formed by strata which are called formations, groups or members; other non-stratified ones such as granites are represented. The structural relationships between them are expressed by symbols, which gives the map a three-dimensional character completed by additional geological profiles. These are the graphic expression of the deep geometrical arrangement of the units shown on the geological map. Applied information such as water points, mineral deposits and indications, presence of fossils and other elements of point representation are added by means of symbology. The printed sheets include geological sections, columns of the main zones or units and various diagrams (regional geological and tectonic diagrams, both at a scale of 1:1,000,000). The nominal scale of the series is 1:200,000, but in the island territories it has been produced at a scale of 1:100,000. The digital information, geological map 1:200,000, chronolithostratigraphic legend and legend of geological symbols, is stored in coverage format (ESRI). There is a guide reflecting its organisation and codification. The IGME is responsible for the execution of this series of cartography, which it finances with its own resources. The creation of this cartography is based on the compilation of existing information, mainly MAGA cartography at a scale of 1:50,000, doctoral theses and other research work.
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- Mapa Geológico de España Escala 1:200.000 (2ª serie)
To create a regional geological knowledge structure from the synthesis of geological mapping on a larger scale. The objective is to provide geological information for regional planning in aspects related to geological resources, geological risks, environmental protection and communication networks.
In summary, it can be said that the cartography of the Geological Map of Spain Scale 1:200.000, 2nd series, is based on the fundamental reference of the Geological Map of Spain Scale 1:50.000, MAGNA, (2nd Series); it begins with the compilation and analysis of the rest of the information related to the area and its surroundings, including topographic bases and other cartographies and related works such as singular projects, doctoral theses, etc. The next step is the study of the cartographic units and the revision of the available map samples, some field revision with the collection of data and samples for later study, simultaneously with some required photogeological interpretation, is the next step. Then, the transfer of the field work to the map and the subsequent elaboration of the map, supported by photo-interpretation works. The elaboration of the text of the report and that of the complementary information and its organisation complete the process. Finally, the information is digitised. Supervision, correction and validation following the Institute's digital cartography revision procedure, which consists of error detection and correction controls and thorough visual checks.