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Progress in Earth and Planetary Science
Fig. 6 | Progress in Earth and Planetary Science

Fig. 6

From: FTIR microspectroscopy of carbonaceous matter in ~ 3.5 Ga seafloor hydrothermal deposits in the North Pole area, Western Australia

Fig. 6

Examples of Raman spectra of the carbonaceous clots. The spectra marked as CH2, CH2 only, and no CH2 were obtained from sample 96NP452 (CH2: both aliphatic CH2 and CH3 bonds were observed in micro-FTIR measurements; CH2 only: CH2 bond was observed but CH3 was not; no CH2: neither CH2 nor CH3 were observed). Spot numbers (#3, #12, and #13) corresponding to Table 1 are also shown. The band around 464 cm−1 is due to the quartz matrix of the silica veins

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