Table T2. Nomenclature, concentrations, and accumulation rates of compounds identified in organic solvent extract Fraction 1 (see Fig. F1) of (A) Sample 175-1084A-1H-1, 95-97 cm, and (B) Sample 175-1084A- 63X-3, 72-75 cm.

Peak* Compound Concentration
(ng/g)
Concentration
(ng/mg Corg)
MAR
(
µg/cm2/k.y.)
A
B
A
B
A
B
1 n-C15 alkane 60
0.7
1.3
2 n-C16 alkane 211 88
2.4 2.3
4.4 1.0
3 Norpristane 249 173
2.9 4.6
5.2 2.0
4 n-C17 alkane 343 188
3.9 4.9
7.2 2.2
5 Pristane 748 395
8.6 10.4
15.7 4.6
6 3-methylheptadecane 383
4.4
8.0
7 5-methylheptadecane 697
8.0
14.6
8 Pristene isomer 235
6.2
2.8
9 5-methylheptadecene 125
3.3
1.5
10 n-C18 alkane 543 245
6.2 6.4
11.4 2.9
11 Phytane 968 725
11.1 19.1
20.3 8.5
12 Phytene isomer 113
3.0
1.3
13 Phytene isomer 217
5.7
2.6
14 Phytene isomer 306
8.0
3.6
15 n-C19 alkane 444 263
5.1 6.9
9.3 3.1
16 3-methylnonadecane 485
5.6
10.2
17 5-methylnonaadecane 774 339
8.9 8.9
16.3 4.0
18 n-C20 alkane 450 310
5.2 8.1
9.5 3.6
19 n-C21 alkane 277 214
3.2 5.6
5.8 2.5
20 3-methyl-2-(3,7,11-trimethyldodecyl)-thiophene 90 137
1.0 3.6
1.9 1.6
21 3-(4,8,12-trimethyltridecyl)-thiophene 103
2.7
1.2
22 3-methylheneicosane 548
6.3
11.5
23 5-methylheneicosane 487
5.6
10.2
24 C22 cyclic alkane 355
4.1
7.5
25 n-C22 alkane 212 141
2.4 3.7
4.5 1.6
26 C25 isoprenoid 492 214
5.7 5.6
10.3 2.5
27 n-C23 alkane 268 184
3.1 4.8
5.6 2.2
28 n-C24 alkane 168 114
1.9 3.0
3.5 1.3
29 n-C25 alkane 520 229
6.0 6.0
10.9 2.7
30 n-C26 alkane 278 169
3.2 4.4
5.9 2.0
31 n-C27 alkane 797 430
9.2 11.3
16.8 5.0
32 Unknown with base m/z 231 1461
38.4
17.1
33 Cholesta-4,22-diene 250
6.6
2.9
34 Unknown with base m/z 231 530
14.0
6.2
35 Unknown with base m/z 231 893
23.5
10.5
36 Cholest-4-ene 796 1387
9.2 36.5
16.7 16.3
37 Unknown with base m/z 231 888
23.4
10.4
38 Cholest-5-ene 1025
27.0
12.0
39 Squalene 1111
12.8 0.02
3.3 0.0
40 24-methylcholesta-4,22-diene 524 2375
6.0 62.5
11.0 27.9
41 24-methylcholesta-5,22-diene 757
19.9
8.9
42 27(H) or 17(H) hopane 375
4.3 0.0
7.9 0.0
43 Unknown sterene 525
13.8
6.2
44 n C29 alkane 1936 1308
22.2 34.4
40.7 15.3
45 24-methylcholest-4-ene 350 704
4.01 8.5
7.4 8.3
46 24-methylcholest-5-ene 614 114
7.1 3.0
12.9 1.3
47 24-ethylcholesta-4,22-diene 413
4.7
8.7
48 24-ethylcholesta-5,22-diene 366
4.2
7.7
49 C30 hopene 335
3.9
7.0
50 24-ethylcholesta-4-diene 830 1021
9.5 26.9
17.5 12.0
51 24-ethylcholesta-5-diene 1062 454
12.2 12.0
22.3 5.3
52 17(21)- C30 hopene 1054 891
12.1 23.4
22.1 10.5
53 Unknown sterene 457
0.0 12.0
0.0 5.4
54 17(H),21(H)-C30 hopane 301 370
3.5 9.7
6.3 4.3
55 13(18)- C30 hopene

56 n-C31 alkane 6244 2562
71.76 67.43
131.24 30.05
57 8 fernene 232
6.10
2.72
58 9(11) fernene 88
2.31
1.03
59 C30 hopene 528
6.07
11.09
60 7 fernene 965
11.09
20.28
61 17(H),21 (H)- C30 hopane 418 209
4.80 5.51
8.78 2.45
62 C30 hopene 636
7.31
13.37
63 n-C33 alkane 2294 822
26.37 21.63
48.23 9.64
64 17(H),21 _ (H)- C31 hopane 585 256
6.72 6.75
12.29 3.01
65 n-C34 alkane 1133 721
13.03 18.99
23.83 8.46
66 n-C35 alkane 373 137
4.29 3.61
7.85 1.61
67 n-C36 alkane (internal standard)

Notes: * = peak assignments refer to gas chromatograms in Figure F1. — = not detected.