in the area of do son-Kien an, the outcrop observation here is primarily awry subclass crossover, a doctor observed fold at the Kaleidoscopic and casino Map Painting Subclass oblique cross stones can be seen in the coast mountains, sea navigation Maps, on the surface layer of the jointing system divided the class into many small blocks In the three areas As observed primarily basalt intermingled large quartz saw. On top of the Spread, have platform conglomerate, also here also observed the tectonic fracture.
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