Xu Wanhong, Zhang Zhongying, Sheng ping, Meng Qianxiang. Biomarkers From the Xiayangao Member of the Early Ordovician Tonggao Formation in the Sandu Area, Guizhou Province[J]. Acta Sedimentologica Sinica, 1997, 15(3): 72-77.
Citation:
Xu Wanhong, Zhang Zhongying, Sheng ping, Meng Qianxiang. Biomarkers From the Xiayangao Member of the Early Ordovician Tonggao Formation in the Sandu Area, Guizhou Province[J]. Acta Sedimentologica Sinica, 1997, 15(3): 72-77.
Biomarkers From the Xiayangao Member of the Early Ordovician Tonggao Formation in the Sandu Area, Guizhou Province
1 Department of Earth Sciences,Nanjing University,Nanjing 210093;
2 Lanzhou Institute of Geology,Academia Sinica,Lanzhou 730000
Received Date: 1995-09-25
Publish Date:
1997-09-10
Abstract
Abundant biomarkers( including n-alkanes, acyclic isoprenoid, steranes and terpanes etc. ) have beendetected by GC-MS from the Xiayangao Member of the Early Ordovician Tonggao Formation in the San-du area of the Guizhou Provine. The carbon numbers of n-alkanes range from nC 15 to nC 35 , nC 18 as thehighest peak and nC 29 as the second, nC+ /nC+22 ratios are up to 0. 77 ～ 1. 02, and OEP= 0. 94 ～ 1. 04. Phy-tane is predominant over priatane with a Pr /Ph of 0. 40 ～ 0. 46( average 0. 44) . Hopane series consistmainly of C 27 ～ C 35 -hopanes, a-mong which C 30 -hopane is the most abundant one, and hopane C 27 + C 29 +31 . Tricyclic terpanes are only composed of long-chain ones their carbon numbers ranging from C 20 toC 29 , and strong predominance of C 23 is detected, Steranes consist mainly of C 27 -sterane, C 23 sterane and C29sterane. According to abundance, C 29 -sterane> C27 -sterane> C 28 -sterane, pregnance and 4-methy1 ster-anes are also identified. The composition and distribution of n-alkanes, acyclic isopenoid, terpanes andsteranes, combining with the biota occurring in the same rock samples, seem to show the characteristicsof a reduction environment, and the biomarkers detected from the rock samples might mainly originatefrom algae.
Fan pu, LiJing gui, Meng Qianxiang, Yu Xinke, li Zhenxi.Biomarkers and Other Hydrocarbons in Upper Sinian Stroma-tolitic Dolostones from Southwest China. In: schidlowski et al. ( Eds): Early Organic Evolution: Implication for Mineral andEnerg y Resources. Springer Varlay. 1992: 228 ～ 239.
[8]
Clark, R. C& Blumer, M., Distribution of n _ paraffins in ma-rine organisms and sediment. Liminology and Oceanog raphy,1967, 12( 12): 79 ～ 87.
[9]
Han J& Calvin M. Hydrocarbon distrbution of alg ae and bacte-riaand microbiological activity in sediments. Nat. Acad. Sci.Proc., 1969, 64: 436 ～ 443.
Abstract: Abundant biomarkers( including n-alkanes, acyclic isoprenoid, steranes and terpanes etc. ) have beendetected by GC-MS from the Xiayangao Member of the Early Ordovician Tonggao Formation in the San-du area of the Guizhou Provine. The carbon numbers of n-alkanes range from nC 15 to nC 35 , nC 18 as thehighest peak and nC 29 as the second, nC+ /nC+22 ratios are up to 0. 77 ～ 1. 02, and OEP= 0. 94 ～ 1. 04. Phy-tane is predominant over priatane with a Pr /Ph of 0. 40 ～ 0. 46( average 0. 44) . Hopane series consistmainly of C 27 ～ C 35 -hopanes, a-mong which C 30 -hopane is the most abundant one, and hopane C 27 + C 29 +31 . Tricyclic terpanes are only composed of long-chain ones their carbon numbers ranging from C 20 toC 29 , and strong predominance of C 23 is detected, Steranes consist mainly of C 27 -sterane, C 23 sterane and C29sterane. According to abundance, C 29 -sterane> C27 -sterane> C 28 -sterane, pregnance and 4-methy1 ster-anes are also identified. The composition and distribution of n-alkanes, acyclic isopenoid, terpanes andsteranes, combining with the biota occurring in the same rock samples, seem to show the characteristicsof a reduction environment, and the biomarkers detected from the rock samples might mainly originatefrom algae.
Xu Wanhong, Zhang Zhongying, Sheng ping, Meng Qianxiang. Biomarkers From the Xiayangao Member of the Early Ordovician Tonggao Formation in the Sandu Area, Guizhou Province[J]. Acta Sedimentologica Sinica, 1997, 15(3): 72-77.
Citation:
Xu Wanhong, Zhang Zhongying, Sheng ping, Meng Qianxiang. Biomarkers From the Xiayangao Member of the Early Ordovician Tonggao Formation in the Sandu Area, Guizhou Province[J]. Acta Sedimentologica Sinica, 1997, 15(3): 72-77.
Fan pu, LiJing gui, Meng Qianxiang, Yu Xinke, li Zhenxi.Biomarkers and Other Hydrocarbons in Upper Sinian Stroma-tolitic Dolostones from Southwest China. In: schidlowski et al. ( Eds): Early Organic Evolution: Implication for Mineral andEnerg y Resources. Springer Varlay. 1992: 228 ～ 239.
[8]
Clark, R. C& Blumer, M., Distribution of n _ paraffins in ma-rine organisms and sediment. Liminology and Oceanog raphy,1967, 12( 12): 79 ～ 87.
[9]
Han J& Calvin M. Hydrocarbon distrbution of alg ae and bacte-riaand microbiological activity in sediments. Nat. Acad. Sci.Proc., 1969, 64: 436 ～ 443.
Grantham, P. J., The occurence of unusual C 27 and C 29 Ster-ane predominances in Two Types Omn crude oil. Org. Geoch,1986, 9( 1): 1 ～ 10.
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Xu Wanhong, Zhang Zhongying, Sheng ping, Meng Qianxiang. Biomarkers From the Xiayangao Member of the Early Ordovician Tonggao Formation in the Sandu Area, Guizhou Province[J]. Acta Sedimentologica Sinica, 1997, 15(3): 72-77.
Xu Wanhong, Zhang Zhongying, Sheng ping, Meng Qianxiang. Biomarkers From the Xiayangao Member of the Early Ordovician Tonggao Formation in the Sandu Area, Guizhou Province[J]. Acta Sedimentologica Sinica, 1997, 15(3): 72-77.
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