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Geological Map of the World at 1:35 M - GIS

GIS geodatabase revised and restructured based on GIS data of the 2014 Geological Map of the World edition at 1:35 000 000
Digital cartography and geomatics originally carried out by Carole Heyd & Damien Rambourg (BRGM)
Contents:
Geodatabase
mxd files in English and French for 10.0 and 10.5 versions
Technical Notes
Terms of use
Explanatory notes in English and French (pdf)
© CCGM-CGMW Paris, 2014

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Enveloppe (ex: folded map or booklet)

1 500,00 €

1 500,00 € per CD

The Geographic Information System (GIS) database released for distribution in October 2017 results from the restructuration and enhancement work carried out by Dr. Bruno VRIELYNCK (Paris VI University/CGMW) on the original GIS project of the 3rd edition of the Geological Map of the World at 1:25 000 000 published in 2010.

At the origin of the database is the digital material issued from the digitation process of the original hand drawn manuscripts of the author, Dr. Philippe Bouysse (CGMW former Secretary General 1990-2000).  This georeferenced data was processed in 2009 under the ArcGIS program (version 9.0) to produce the graphic files for the 2010 and 2014 editions of the printed map, and a GIS compatible project enabling access and extraction of descriptive and attributed information.  This constraint determined the creation of three geodatabases in two distinct projections, Mercator for the main map and stereographic for the North and South Poles.

The evolution of the GIS concepts and tools since 2010, and the way the geodatabase was originally structured, made the 2010 GIS project non-compatible or hardly extractible using the newer ArcGIS versions. After a thorough analysis of the former project, a work of homogenisation, merging and reorganization of the geodatabases was performed following a topological and set theory logic aimed at generating a single database using the same GCS_WGS_1984 Coordinate System. A style library was created to group all the symbols representing the graphic elements of the map (points, lines, polygons), together with mxd projects in English and French versions. A STRM layer was also added to enable the choice for relief display.

The following information is provided for each element of the map:

NOTATION: Geological notation (see detail below)
NOM: Name of the feature
AGE: Numerical age of the feature
DESCR_EN: English description
LITHO_EN: Lithology attribute in English
STRAT_EN: Stratigraphic age attribute in English

It is worth noting that in ZONE field three main geographic and geological domains were considered to organize the dataset of the map, ONSHORE, OFFSHORE and OCEANIC. The coastline limits the ONSHORE and OFFSHORE domains. The bottom of the "Continental or Insular Slope", or in Antarctica the "boundary of the Continental Margin", limits the OFFSHORE and OCEANIC domains. Geographic and structural data is grouped in the OFFSHORE domain, while the other two fields contain geological and structural data exclusively. Each data belongs to one or the other of the three domains, never to two. For instance, a section of a fault can be located ONSHORE and another section of the same fault OFFSHORE. Passing the limits mentioned above causes the line featuring the fault to be composed of at least two arcs. The underlying logic is not only topological. On the one hand, the research methods in the ONSHORE and OFFSHORE domains are different and, on the other hand, distinct stratigraphic criteria is applied in the legends for each of these domains. In the ONSHORE, the stratigraphical units of the legend correspond to the age of the formation of the outcropping rocks. In the OCEANIC domain, they indicate the age of the oceanic crust lying below accumulated sediments.

The other fields are proper to each Entity class.

The GIS dataset is accompanied by a Technical description with details and tables of the geodatabase structure, feature classes, class and field definitions, field properties, personal geodatabase domains, code symbol definitions, particular properties of some layers, symbology and style references, symbols and framework of the ArcMap document, and recommendations for the change of projection.

The 2017 GIS database of the Geological Map of the Work results from the volunteer work of collaborators with recognized scientific and technical expertise. With the release of this fully refurbished version, the Commission of the Geological Map of the World complies once more with the task it was entrusted more than a hundred years ago, which is providing the international geoscience community and the general public with a comprehensive and synthetic document at small scale reflecting the state of the art of the knowledge of our planet’s geology.

  • Weight 0.140 kg
  • Scale 1:35 000 000
  • Digital format GIS database