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Fig. 2 | Heritage Science

Fig. 2

From: Novel nannofossils extraction methods from paintings, coupled with GC–MS for provenance determination and binder analysis

Fig. 2

Cross-polarized light microscope images of chalk smear slides. A “L” or “T” shape used for the direction in which the frames (1 to 6 here; frames are not at scale) at 560× magnification were observed. B 560× magnification at which the counting of the nannofossils was done. Some of the most visible nannofossils in the picture are highlighted (red circle). C The determination of the nannofossils was done at 1000× magnification. NF1 is in an aggregate and cannot be properly determined, while NF2 is nicely visible

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