1. Ministry of Environment and Water National Geofund and Geology
GIS for processing and analyzing geological data and managing underground resources
Valeri Trendafilov
Ministry of Environment and Water
National Geofund and Geology
22, Princess Marie Louse Blvd., 1000 Sofia, Bulgaria

2. Paper Topics Bulgarian National Geofund Geological Maps in GIS
Exploration of Underground Resources
Examples

3. National Geofund
A huge amount of data has been collected in a field of Geological Sciences in Bulgaria in the last years.
More than 7000 reports are available in National Geofund covering all aspects of geological activities in Bulgaria including geological mapping, geophysical and geochemical surveys, hydrogeology, exploration of mineral deposits etc. The oldest geological report dated from 1925.
The National Geofund is responsible for collecting and storing all geological data in Bulgaria. Part of the data is published. The National Geofund is in charge of disclosure of unpublished information to another organizations under established rules.

4. National Geofund Two ways to find the reports of interest
In “GeoArchive” Data Base for the reports -using keywords querying. Some keywords - Author name,Title, Year , Location, Map Sheet, Methods, Mineral Resource etc.
Using graphical interface (GIS) for the areas in which geological works have been done(an example follows).

5. National Geofund

6. National Geofund Implementation of Information Technologies - 1992
Implementation of GIS
Programs financed from the State budget
32 data sets available or in progress of creating
Metadata for the sets according GEIXS standards
GEIXS(Geological Electronic Information eXchange System)
Espirit No 23802
Metadata published on

7. National Geofund Other International projects related to GIS:
National System for Training of Public Administration in
Ecological Management of Natural Resources.
Contract N IB _JEP , TEMPUS PHARE
New Proposals for the
5th Framework Programme
Energy, Environment and Sustainable Development:
Marine Sediment Information Network for the European
Regional Seas - MARINERS
Black Sea Scene

8. Digital Maps - Register and Cadastre of Prospecting and/or
Exploration Permits
- Maps of Mineral Deposits
- Exploration Works
- Geochemical and Geophisical Anomalies Maps
- Geological Maps
- Topographic Maps

9. Geological Maps
Geological Map of Bulgaria, Scale - 1:500000,1:100000,1:25000 in GIS format - different layers of information :
Geological boundaries
Stratigraphy
Lithology
Tectonics
Rivers
Infrastructure - towns, roads, railway

10. Geological Maps 1. Geological Map of Bulgaria, Scale 1:500000.
Published map in 1989, 2 flat coloured sheets covered all territory of Bulgaria, Bulgarian-English edition.
The map is compiled on the base of the Geological map of Bulgaria scale 1: and available data of the National Geofund.
Digital model available (MapInfo).

11. Digital Map

12. Digital Map
Fragment of 1: map in real scale

13. Digital Maps 2. Geological Map of Bulgaria, Scale 1:100000.
Published Map Series, 86 coloured flat sheets, covered all the country, available
in Bulgarian or in English edition. All available in digital form (MapInfo).

14. Digital Map, example.

15. Geological Maps 3. Geological Map of Bulgaria, Scale 1:25000.
Unpublished map series, standard indexed map sheets, covered mineral potential areas. Reports are available in National Geofund. Some of map sheets are available in digital form(MapInfo). The results from new field geological mapping program are produced directly in digital form and printed. Only Bulgarian edition available.

16. Digital Maps

17. Digital Maps, example.

18. Geomorphologic Map
4. Geomorphologic Map of Bulgaria, 1: Unpublished map series, map sheets correspond to geological map in scale 1:

19. Geochemical Maps 5. Geochemical Map of Bulgaria, Scale 1:100000.
Unpublished series, presents point-source geochemical data. The point data have been gridded to create colour classified digital maps.

20. Geophysical Maps 6. Gravity Map of Bulgaria, Scale 1:100000
Unpublished map series, Bouguer anomaly contours and location of observations.

21. Geophysical Maps 7. Magnetic Map of Bulgaria, 1:100000.
Unpublished map series, ground magnetic anomaly contours and location of digitised data points.

22. Digital Magnetic Maps

23. Digital Map Magnetic Map of Bulgaria, 1:500000.
Contour map of Za(nT), produced from grid 5x5km

24. Geological Maps
8.Aeromagnetic and Gamma Ray Spectrometer Data. Regional aero data: Location of digitised data points(2.5 millions) along flight lines and calculated values of magnetic fields and U,Th, K.

25. Geological Exploration
9. Exploration Drillholes and Mining Workings. Data set consists of information from drillholes and mining workings of mineral exploration programs.

26. Digital Maps
10. Seismic Lines in Bulgaria. Data set consists of information from
seismic surveys, onshore and offshore.
3930 lines - onshore
1573 lines - offshore

27. Geological Data Sets
11. Oil and Gas Wells. Data set for all the oil and gas wells drilled on the territory of Bulgaria, onshore and offshore wells.

28. Geological Data Sets
12. Map of Mineral Deposits of Bulgaria, 1: Unpublished map series, consists of point objects that represent location of mineral deposits, occurrence and indication. Total number of objects 7787.

29. Geological Data Sets
13. Register and Cadastre of Prospecting and/or Exploration Permits. Register and Cadastre of permits for prospecting and/or exploration of underground resources issued by the state authorities according UNDERGROUND RESOURCES ACT.
Current International Licensing Rounds are Announced on Web:

30. Contents of gold grains in pan samples
Examples - Pan sampling data.
Data set contains information about position of pan samples
and quality and quantity of minerals. Currently updated.
Contents of gold grains in pan samples

31. Examples - Gold Exploration
Computer map, produced from digitised series of maps of scale ranging from 1:1000 to 1:25000.

32. Examples
Uranium

33. Examples
Aero Gamma Ray Spectrometer Anomalies Uranium

34. Examples
Oil and Gas Exploration

35. Example of interpretation using information from seismic survey, wells and well logs.

36. Other Data Sets
Specialised Cadastre of Deposits and Register of Discoveries. Data set contains maps of mineral deposits and information about the discoveries of underground resources made as a result of geological research.
Map of River System in Bulgaria, Scale 1:25000.
Digital map sheets produced from topographic maps.
Groundwater Monitoring Design for Bulgaria, 1:
Computer map for Groundwater Monitoring Design on the base of Geological Map 1:

37. Other Data Sets Protected Caves in Bulgaria.
Data set contains information about 113 protected caves with maps of caves and protected areas.