Research Article
Carbon and Oxygen Isotopic Stratigraphy of Mesoproterozoic Carbonate Sequences (1.6–1.4 Ga) from Yanshan in North China
Table 2
Isotopic and elemental compositions of Mesoproterozoic carbonates from Yanshan, North China.
| Formation | Samples | Stratigraphic depth/m | Lithologies | δ 13C/‰ (PDB) | δ 18O/‰ (PDB) | Mn/Sr | Sr/ppm | Mg/Ca |
| Tieling Fm. | Ktl-46-T1 | 536.03 | Micritic limestone | 0.0 | −5.9 | 3.18 | 63.3 | 0.03 | | Ktl-40-T1 | 563.33 | Limestone | 1.0 | −5.8 | 3.15 | 59.0 | 0.07 | | Ktl-36-T1 | 581.47 | Argillaceous limestone | 0.6 | −5.4 | 5.37 | 56.3 | 0.72 | | Ktl-29-T2 | 606.44 | Micritic dolostone | −0.2 | −5.2 | | | | | Ktl-29-T1 | 607.44 | Argillaceous dolostone | −0.1 | −5.3 | | | 1.89 | | Ktl-28-T1 | 650.17 | Micritic dolostone | −0.6 | −6.8 | 271.28 | 43.5 | 2.17 | | Ktd-16-T1 | 720.81 | Breccia dolostone | −1.2 | −6.8 | | | | | Ktd-12-T2 | 737.24 | Micritic dolostone | −1.7 | −5.7 | | | 0.68 | | Ktd-12-T1 | 737.34 | Micritic dolostone | −1.6 | −6.9 | 29.4 | 44.3 | 0.99 |
| Hongshuizhuang Fm. | KH-11-T1 | 738.04 | Micritic dolostone | −1.7 | −5.5 | 84.01 | 40.6 | 2.01 |
| Wumishan Fm. | LW-409-T1 | 857.77 | Micritic dolostone | 1.3 | −4.0 | | | | | LW-395-T1 | 963.96 | Micritic dolostone | 1.1 | −7.7 | | | | | LW-356-T1 | 1213.39 | dolostone bearing MT | 0.7 | −6.6 | | | | | LW-347-T1 | 1265.3 | Micritic dolostone | 0.3 | −5.2 | 6.11 | 10.2 | 0.6 | | LW-331-T1 | 1364.92 | Calcareous dolostone | 0.8 | −7.8 | | | | | LW-329-T1 | 1375.58 | Dolomitic limestone | 1.5 | −8.6 | 0.49 | 94.9 | 0.61 | | LW-324-T1 | 1446.5 | Micritic limestone | 1.5 | −8.6 | 1.17 | 86.1 | 0.49 | | LW-321-T1 | 1467.67 | MT limestone in situ | 1.3 | −8.4 | | | | | LW-315-T1 | 1531.43 | Micritic limestone | −0.2 | −11.5 | 0.54 | 115.0 | 0.6 | | LW-299-T1 | 1676.2 | MT micriticlimestone | 0.6 | −8.8 | | | | | LW-295-T1 | 1694.04 | Dolomitic limestone | −0.8 | −10.2 | | | | | LW-293-T1 | 1702.94 | Micritic dolostone | 0.2 | −7.1 | | | | | LW-287-T1 | 1745.94 | Powder dolostone | 0.5 | −6.2 | 2.72 | 34.2 | 0.6 | | LW-286-T1 | 1752.03 | Powder dolostone | 0.7 | −7.1 | 2.26 | 27.5 | 0.57 | | LW-278-T1 | 1795.39 | Powder dolostone | 0.6 | −5.7 | 2.97 | 20.9 | 0.61 | | LW-270-T1 | 1840.77 | Dolostone | 0.2 | −5.2 | 6.73 | 31.1 | 0.59 | | LW-265-T1 | 1866.38 | Algal dolostone | 0.0 | −6.1 | | | | | LW-257-T1 | 1930.82 | Dolostone | −2.1 | −5.2 | | | | | LW-249-T1 | 1973.53 | Algal dolostone | 0.4 | −6.7 | 2.49 | 18.7 | 0.59 | | LW-240-T1 | 2027.2 | Sparry dolostone | 0.5 | −7.2 | | | | | LW-238-T1 | 2046.83 | Stromatolite dolostone | 0.4 | −7.1 | | | | | LW-233-T1 | 2079.2 | Powder dolostone | 0.7 | −6.7 | 17.92 | 19.5 | 0.48 | | LW-227-T1 | 2117.68 | Powder dolostone | 0.7 | −7.7 | 17.38 | 20.1 | 0.58 | | LW-223-T1 | 2150.28 | Algal dolostone | 0.3 | −9.2 | 15.04 | 26.3 | 0.6 | | LW-218-T1 | 2184.96 | Powder dolostone | −0.5 | −6.3 | | | | | LW-213-T1 | 2217.08 | Dolostone | −0.8 | −6.4 | 17.2 | 18.0 | 0.61 | | LW-207-T1 | 2271.37 | Powder dolostone | −0.1 | −6.6 | 7.83 | 19.8 | 0.6 | | LW-201-T1 | 2321.32 | Stromatolite olostone | 0.6 | −7.8 | | | | | LW-196-T1 | 2375.19 | Dolostone | 0.3 | −7.6 | | | | | LW-192-T1 | 2405.43 | Powder dolostone | −0.5 | −7.0 | | | | | LW-184-T1 | 2451.98 | Dolostone | 0.4 | −7.6 | | | | | LW-175-T1 | 2559.8 | Powder dolostone | 0.2 | −6.1 | | | | | LW-167-T1 | 2617.95 | Algal dolostone | 0.1 | −5.5 | | | | | LW-162-T1 | 2684.71 | Siliceous dolostone | 0.6 | −5.0 | 1.68 | 23.1 | 0.61 | | LW-158-T1 | 2749.17 | Powder dolostone | 0.5 | −7.0 | | | | | LW-155-T1 | 2767.03 | Powder dolostone | 0.6 | −5.7 | 1.48 | 31.4 | 0.6 | | LW-148-T1 | 2819.09 | Powder dolostone | 0.6 | −5.2 | | | | | LW-138-T1 | 2882.64 | Dolostone | 0.0 | −5.2 | 59.03 | 8.8 | 0.59 | | LW-132-T1 | 2915.65 | Dolostone | 0.3 | −5.7 | | | | | LW-128-T2 | 2941.69 | Powder dolostone | 0.0 | −5.8 | | | | | LW-128-T1 | 2943.79 | Dolostone | 0.3 | −4.8 | 2.98 | 15.6 | 0.6 | | LW-119-T1 | 3054.87 | Siliceous dolostone | −1.7 | −6.1 | 2.16 | 25.1 | 0.61 | | LW-113-T1 | 3079.65 | Siliceous dolostone | −1.7 | −6.0 | 16.96 | 21.9 | 0.6 | | LW-99-T1 | 3192.1 | Dolostone | −0.8 | −5.2 | | | | | LW-73-T1 | 3334.6 | Powder dolostone | −0.7 | −4.8 | | | | | LW-67-T1 | 3381.68 | Powder dolostone | 0.0 | −5.8 | | | | | LW-57-T1 | 3448.42 | Powder dolostone | 0.2 | −4.7 | 2.09 | 22.3 | 0.03 | | LW-52-T1 | 3483.76 | Dolostone | 0.4 | −4.9 | | | | | LW-50-T1 | 3504.88 | Dolostone | 0.0 | −4.4 | | | | | LW-44-T1 | 3543.89 | Dolostone | 0.8 | −5.6 | 4.07 | 15.2 | 0.6 | | LW-39-T1 | 3578.55 | Stromatolite dolostone | 1.4 | −5.4 | 3.31 | 25.7 | 0.57 | | LW-33-T1 | 3618.71 | Powder dolostone | 1.6 | −4.7 | 2.13 | 25.4 | 0.57 | | LW-30-T1 | 3636.91 | Dolostone | 0.9 | −4.7 | 2.45 | 25.3 | 0.6 | | LW-29-T1 | 3641.91 | Dolostone | 0.5 | −4.2 | | | | | LW-24-T1 | 3665.83 | Dolostone | 0.2 | −2.3 | | | | | LW-22-T1 | 3687.32 | Algal dolostone | −0.2 | −4.3 | 1.62 | 33.5 | 0.57 | | LW-20-T1 | 3715.37 | Dolostone | −0.7 | −2.9 | 3 | 18.1 | 0.6 | | LW-13-T1 | 3762.27 | Dolostone | −1.1 | −4.2 | | | | | LW-11-T1 | 3776.1 | Dolostone | −0.3 | −5.5 | | | | | LW-3-T1 | 3826.82 | Muddy dolostone | −0.8 | −2.8 | 3.44 | 31.5 | 0.58 |
| Yangzhuang Fm. | KY2-217-T1 | 3849.48 | Sandy dolostone | −1.3 | −5.1 | | | | | KY2-216-T1 | 3849.98 | Muddy dolostone | −0.9 | −3.8 | 1.55 | 156.2 | 0.47 | | KY2-214-T1 | 3861.28 | Muddy dolostone | −0.7 | −4.9 | | | | | KY2-212-T1 | 3876.08 | Muddy dolostone | −1.4 | −5.9 | 14.23 | 9.2 | 0.58 | | KY2-207-T1 | 3897.09 | Muddy dolostone | −0.9 | −3.5 | | | | | KY2-201-T1 | 3921.36 | Siliceous dolostone | 0.1 | −7.3 | | | | | KY2-194-T1 | 3965.2 | Siliceous dolostone | −1.1 | −7.1 | 3.63 | 47.7 | 0.6 | | KY2-192-T1 | 3983.89 | Siliceous dolostone | −1.4 | −6.7 | | | | | KY1-190-T1 | 4006.3 | Siliceous dolostone | −1.1 | −8.2 | 5.76 | 31.4 | 0.52 | | KY1-187-T1 | 4016.91 | Siliceous dolostone | −1.3 | −8.1 | 4.09 | 40.3 | 0.6 | | KY1-180-T1 | 4064.11 | Siliceous dolostone | −0.5 | −6.2 | 5.98 | 46.9 | 0.59 | | KY1-174-T1 | 4100.75 | Siliceous dolostone | −0.6 | −6.5 | 1.72 | 47.2 | 0.59 |
| Gaoyuzhuang Fm. | Gh1-170-T1 | 4191.12 | Algal dolostone | −0.7 | −9.9 | | | | | Gh1-168-T1 | 4217.14 | Calcareous dolostone | −0.4 | −14.9 | 19.2 | 54.7 | 0.55 | | Gz2-147-T1 | 4472.34 | Breccia limestone | 0.1 | −5.9 | 3.94 | 31.0 | 0.51 | | Gz2-141-T2 | 4519.32 | Dolostone | −0.9 | −7.3 | 4.75 | 28.9 | 0.47 | | Gz2-141-T1 | 4519.32 | Nodular limestone | −1.8 | −9.9 | 13.96 | 22.7 | 0.48 | | Gz2-137-T1 | 4538.71 | Nodular limestone | −0.7 | −12.9 | | | | | Gz2-135-T2 | 4547.75 | Siliceous shale | 0.0 | −12.3 | | | | | Gz2-135-T1 | 4548.15 | Limestone lens | −0.8 | −12.9 | 2.46 | 23.2 | 0.53 | | Gz2-134-T1 | 4552.65 | Siliceous limestone | −0.8 | −8.0 | 1.63 | 16.1 | 0.19 | | Gz1-133-T1 | 4571.12 | Muddy limestone | −0.9 | −6.4 | | | | | Gz1-126-T1 | 4608.43 | Calcareous dolostone | −1.1 | −7.4 | | | | | Gz1-122-T1 | 4627.76 | Nodular limestone | −1.3 | −7.1 | | | | | Gz1-113-T1 | 4664.23 | Dolomitic limestone | −1.2 | −7.7 | | | | | Gs-111-T1 | 4675.53 | Dolostone with Mn | −0.7 | −6.2 | | | | | Gs-98-T1 | 4714.52 | Dolostone with Mn | 0.0 | −4.1 | 1.31 | 42.3 | 0.22 | | Gs-96-T1 | 4744.45 | Dolostone with Mn | −0.4 | −4.8 | | | | | Gg2-91-T1 | 4791.6 | Muddy dolostone | −1.1 | −4.8 | | | | | Gg2-89-T1 | 4812.78 | Stromatolite dolostone | −0.1 | −4.3 | 0.97 | 73.6 | 0.23 | | Gg2-88-T1 | 4814.78 | Muddy dolostone | −0.9 | −5.1 | | | | | Gg2-87-T1 | 4818.92 | Silicite | −1.9 | −9.6 | | | | | Gg2-83-T1 | 4834.27 | Stromatolite dolostone | −0.4 | −6.1 | | | | | Gg1-72-T1 | 4866.67 | Stromatolite dolostone | −0.2 | −5.7 | | | | | Gg1-58-T1 | 4901.87 | Siliceous dolostone | −0.1 | −10.4 | | | | | Gg1-47-T1 | 4951.22 | Dolostone | −0.3 | −6.2 | | | | | Gg1-35-T1 | 4994.67 | Dolostone | −0.2 | −5.9 | | | | | Gg1-29-T1 | 5034.38 | Dolostone | −6.5 | −17.3 | 4.09 | 41.6 | 0.57 | | Gg1-28-T2 | 5046.59 | Quartz sandstone | −1.9 | −7.5 | | | | | Gg1-28-T1 | 5047.09 | Quartz sandstone | −2.8 | −7.2 | 5.4 | 42.6 | 0.58 |
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