Preliminary reports
on the topic "Lithostratygraphy and mapping approaches of metamorphic and mixed rocks"

• Lithostratigraphy and mapping approaches of metamorphic and mixed rocks.
  H. G. Hristchev

• Subdivision principles for volcanogenic sediment terrains ( East Rodopian volcanic region).
  V. Georgiev, P. Milovanov

• Lithostratigraphic subdivision principles and criteria for the volcanic terrains in connection with the new approach (scheme) for reconstruction, development and grouping analysis of volcanic structures in the East-Rodopian complex depression structure.
  B. Jordanov et al.

• Presentation of the “Geology and Paleontology” department in the Mining-Geological University “St. Ivan Rilski”.