Surface:
Lyngbya sp. occupied 95% of mats surface, forming entengled net of the robustly enveloped filaments, sometimes forming continues (solid), thick coverage.
Cross section:
1 layer. Surface layer is thin, ~ 0.2 mm, composed mostly from Lyngbya sp.
2 layer. First white layer. Thickness of the layer is 0.3 mm.
3 layer. Dark blue-green layer.With filamentous forms without scytonemin. Empty sheaths occupied most of the volume. Thickness of the layer is ~ 0.2 mm.
4 layer. White layer, probably composed from sediments. Thickness of the layer is over 4 mm.

TOTAL THICKNESS OF THE MAT IS ~ 0.7 mm.

Note: Supposedly Lyngbya sp. may seldom occur through all layers except layer 8. In the longitudinal axis mat is not continuous (discrete).
________________________________________________________________________________________________________________________________________________
Species abundance depending of layer:

Species					Surface		Second layer		2mm deep
___________________________________________________________________________________________
1. Lyngbya sp.				95%		10%	
2. Schizothrix sp.			5%		30%			40%
3. Schizothrix helva					30%
4. Gloeocapsopsis sp.					rarely			rarely		
5. Porphyrosiphon sp.					10%			rarely
6. Coleofasciculus chthonoplastes			10%			20%
7. Coleofasciculus sp.					  			20%	
8.Spirulina sp.						rarely
9.Symplocastrum sp.					10%			20%			

TOTAL					2		8			6