Once back on board the dredger and rocks thrusted on deck, you have to go, day or night, at the stage of sorting and recognition samples collected. Small and large pieces are screened, only one saw cut to most often reveal their exact nature. Just as the time an eye tracking petrologists these curious rocks freshly cut, to identify minerals fresh hopes for subsequent geochemical analysis, or a shear plane, revealing an increased strain.
The first step is to classify blocks by type, according to their lithology, after being sawn. This phase may be important acrobatic days of high waves (saw lying on a walkway outside the boat), but for now we have been lucky the weather being in the game. Once the nature of each block determined, it's time for more detailed description of each sample. This step allows us to determine with the naked eye, a magnifying glass or microscope (for higher magnification), the main minerals present in each sample and whether it was affected by episodes of deformation. This description is written and accompanied by a photograph of the sample, once a number has been assigned. This classification and description of samples will then allow the researcher to select samples for studies and analysis will be conducted upon return to earth.
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