Skip to main content

Table 1 IR and Raman parameters for analyzed carbonaceous clots

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

Sample # Spot # Microphotograph IR Raman
Abs at ~ 2960 cm−1 Abs at ~ 2925 cm−1 Abs at ~ 2850 cm−1 R 3/2 I1350/I1600 A1350/A1600 FWHM1350 FWHM1600 N
96NP452 #1 Figure 2a 0.0024 ± 0.0003 0.0062 ± 0.0005 0.0043 ± 0.0000 0.38 ± 0.02 1.54 ± 0.07 2.21 ± 0.06 65.0 ± 4.9 45.1 ± 3.0 27
#2 Figure 2a 0.0019 ± 0.0001 0.0050 ± 0.0002 0.0018 ± 0.0001 0.39 ± 0.00 1.46 ± 0.07 2.24 ± 0.07 67.6 ± 4.3 44.2 ± 2.9 28
#3 Figure 2b 0.0025 ± 0.0000 0.0088 ± 0.0010 0.0046 ± 0.0007 0.29 ± 0.03 1.45 ± 0.08 2.24 ± 0.05 68.3 ± 5.1 44.2 ± 2.2 27
#4 Figure 2b 0.0051 ± 0.0003 0.0100 ± 0.0005 0.0055 ± 0.0000 0.51 ± 0.01 1.46 ± 0.06 2.23 ± 0.03 67.1 ± 2.9 43.8 ± 1.3 27
#5 Figure 2b 0.0025 ± 0.0001 0.0070 ± 0.0006 0.0039 ± 0.0008 0.36 ± 0.05 1.52 ± 0.08 2.22 ± 0.08 63.2 ± 4.3 43.2 ± 3.1 27
#6 Figure 2c 0.0017 ± 0.0000 0.0052 ± 0.0001 0.0026 ± 0.0001 0.34 ± 0.01 1.39 ± 0.07 2.20 ± 0.08 70.8 ± 5.5 44.8 ± 3.0 27
#7 Figure 2d 0.0016 ± 0.0004 0.0066 ± 0.0005 0.0034 ± 0.0004 0.24 ± 0.04 1.47 ± 0.08 2.24 ± 0.04 65.1 ± 3.1 42.6 ± 1.2 27
#8 Figure 2f 0.0018 ± 0.0005 0.0073 ± 0.0009 0.0040 ± 0.0005 0.26 ± 0.10 1.48 ± 0.06 2.25 ± 0.06 66.3 ± 2.7 43.6 ± 2.2 30*
#9 Figure 2f 0.0014 ± 0.0001 0.0038 ± 0.0001 0.0024 ± 0.0000 0.39 ± 0.05 1.48 ± 0.06 2.25 ± 0.06 66.3 ± 2.7 43.6 ± 2.2 30*
#10 Figure 2f 0.0021 ± 0.0003 0.0094 ± 0.0001 0.0048 ± 0.0002 0.22 ± 0.03 1.46 ± 0.04 2.26 ± 0.04 66.7 ± 1.6 42.9 ± 0.9 30
#11 Figure 2g 0.0026 ± 0.0002 0.0050 ± 0.0003 0.0024 ± 0.0002 0.51 ± 0.00 1.49 ± 0.08 2.25 ± 0.03 65.8 ± 3.9 43.4 ± 1.4 28
#12   n.d. 0.0042 ± 0.0001 0.0015 ± 0.0002   1.40 ± 0.06 2.24 ± 0.03 69.6 ± 2.5 43.6 ± 0.9 27
#13   n.d. n.d. n.d.   1.36 ± 0.13 2.00 ± 0.37 77.9 ± 8.8 52.4 ± 12.7 27
T-58 #14 Figure 2j 0.0021 ± 0.0000 0.0056 ± 0.0004 0.0025 ± 0.0001 0.38 ± 0.02      
  1. Absorbances at ~ 2960 cm−1, ~ 2925 cm−1, and 2850 cm−1 and R3/2 values of the analyzed carbonaceous matter. Errors show standard deviations. n.d. not detected
  2. *The same data are shown because the analyzed area for FTIR microspectroscopy of the clots were overlapped