Bulgarian National Geological Data Sets

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Bulgarian National Geological Data Sets

• Valeri Trendafilov, Nikolay Markov
• Ministry of Environment and Waters
• National Geofund and Geology

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Paper Topics

• Bulgarian National Geofund
• Bulgarian Geological Data Sets

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National Geofund

• A huge amount of data has been collected in a
  field of Geological Sciences in Bulgaria in the
  last 50 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 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  unpublished information to another organizations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.

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National Geofund

• The oldest geological report dated from 1925
• Two ways to find 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 and etc.
• Using graphical interface for the areas in which
  geological works have been done(an example
  follows).

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National Geofund
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Geological Data Sets

• The metadata for 32 geological data sets and 14
  images as examples were prepared for the GEIXS
  project.
• The metadata were sent via e-mail to Jan Jillema
  on 2 times.
• The short descriptions of data sets follow below.

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Geological Data Sets

• 1.Geological Map of Bulgaria, Scale 1500000.
• 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 1100000 and
  available data of the National Geofund.
• Digital model available (MapInfo).

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Digital Map
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Digital Map

• Fragment of 1500000 map in real scale

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Geological Data Sets

• 2. Geological Map of Bulgaria, Scale 1100000.
• Published Map Series, 86 coloured flat sheets,
  covered all the country, available in Bulgarian
  or in English edition.
• All available in digital form (MapInfo).

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Digital Maps
12
Digital Map, example.
13
Geological Data Sets

• 3. Geological Map of Bulgaria, Scale 125000.
• 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.

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Digital Maps
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Digital Maps, example.
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Geological Data Sets

• Geological Maps, Scale - 1500000,1100000,125000
  in GIS format - different layers of
  information
• Geological boundaries
• Stratigraphy
• Lithology
• Tectonics
• Rivers
• Infrastructure - towns, roads, railway

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Geological Data Sets

• 4. Geomorphologic Map of Bulgaria, 1100000.
  Unpublished map series, map sheets correspond to
  geological map in scale 1100000.

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Geological Data Sets

• 5. Geochemical Map of Bulgaria, 1100000.
• Unpublished series, presents point-source
  geochemical data. The point data have been
  gridded to create colour classified digital maps.
• 6. Gravity Map of Bulgaria, 1100000.
• Unpublished map series, Bouguer anomaly
  contours and location of observations

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Digital Maps
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Geological Data Sets

• 7. Magnetic Map of Bulgaria, 1100000.
• Unpublished map series, ground magnetic anomaly
  contours and location of digitised data points.

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Geological Data Sets

• 8. Map of Mineral Deposits of Bulgaria, 1100000.
  Unpublished map series, consists of point objects
  that represent location of mineral deposits,
  occurrence and indication.
• 9. Geoarchive - Data set in Bulgarian language
  about all the reports available in National
  Geofund with the key words for searching.
• 10. Oil and Gas Wells. Data set for all
  the oil and gas wells
• drilled on the territory of
  Bulgaria, onshore and offshore.
• 11.Seismic Lines in Bulgaria. Data set consists
  of information from seismic surveys, onshore and
  offshore.

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Example of interpretation using information from
seismic survey, wells and well logs.
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Geological Data Sets

• 12.Aeromagnetic and Gamma Ray Spectrometer Data.
  Regional aero data Location of digitised data
  points along flight lines and calculated values
  of magnetic fields and U,Th, K.

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Geological Data Sets

• 13. Exploration Drillholes and Mining Workings.
  Data set consists of information from drillholes
  and mining workings of mineral exploration
  programs.
• 14. National Balance of Reserves and Resources.
  The data set consists of reserves and resources
  of all metallic, industrial minerals, oil and
  gas, coal deposits in Bulgaria.
• 15. Tectonic Map of Bulgaria, 1500000.
• Published map, 2 sheets,
  Bulgarian-English Edition, 1976.

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Digital Map

• 16. Magnetic Map of Bulgaria, 1500000.
• Contour map of Za(nT), produced from grid 5x5km

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Geological Data Sets

• 17. Metallogenic Map of Bulgaria, 11000000.
• Published 1coloured map sheet, English edition,
  1989
• 18. Map of Delimited Areas of Gold Deposits in
  Bulgaria.
• Computer map, produced from digitised series of
  maps of scale ranging from 11000 to 125000.
• 19. Map of Uranium Mineralization in Bulgaria.
• Computer Map with uranium deposits, occurrences
  and radioactive anomalies, digitised from maps of
  scale 1200000.

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Geological Data Sets

• 20. Physical properties of the Rocks.
• Data set containing information for rock
  samples-coordinates, type of rock, geologic end
  tectonic position and major physical properties.
  Currently updated.
• 21. Pan sampling data.
• Data set contains information about position of
  pan samples and quality and quantity of minerals.
  Currently updated.

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Contents of gold grains in pan samples
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Geological Data Sets

• 22. Geological Study Areas in Bulgaria. Computer
  maps of the areas in which geological works have
  been done.
• 23. 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.
• 24. 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.

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Geological Data Sets

• 25. Map of the Geological Hazards in Bulgaria,
  1500000.
• Published Map accompanying with
  explanatory text in booklet, 1 folded colour
  sheet, Bulgarian-English edition, 1994
• 26.Groundwater Monitoring Design for
  Bulgaria, 11000000
• Computer map for Groundwater Monitoring
  Design on the base of Geological Map 1500000.
• 27. Map of Underground Waters, 1500000.
• Unpublished map, paper copy.
• 28. Map of Mineral Waters in Bulgaria, 1500000.
• Unpublished map, paper copy.

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Geological Data Sets

• 29. Hydrogeological Map of Bulgaria, 1200000.
• Published Atlas containing 28 coloured map sheets
  and 16 hydrogeological sections.
• 30. Map of Resources of Underground Waters in
  Bulgaria, 1200000.
• Published Atlas containing 28
  coloured map sheets.
• 31. Map of River System in Bulgaria, 125000.
• Digital map sheets produced from
  topographic maps.
• 32. Protected Caves in Bulgaria.
• Data set contains information about 113 protected
  caves with maps of caves and protected areas.