Mg/Ca and Sr/Ca ratios of authigenic carbonate minerals and calcareous biogenic shells in the cold-seep carbonates,north of the South China Sea and their environmental implication

Yang Kehong; Chu Fengyou; Zhu Jihao; Ma Weilin; Dong Yanhui

doi:10.3969/j.issn.0253-4193.2014.08.005

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Yang Kehong, Chu Fengyou, Zhu Jihao, Ma Weilin, Dong Yanhui. Mg/Ca and Sr/Ca ratios of authigenic carbonate minerals and calcareous biogenic shells in the cold-seep carbonates,north of the South China Sea and their environmental implication[J]. Haiyang Xuebao, 2014, 36(8): 39-48. doi: 10.3969/j.issn.0253-4193.2014.08.005

Citation:

Yang Kehong, Chu Fengyou, Zhu Jihao, Ma Weilin, Dong Yanhui. Mg/Ca and Sr/Ca ratios of authigenic carbonate minerals and calcareous biogenic shells in the cold-seep carbonates,north of the South China Sea and their environmental implication[J]. Haiyang Xuebao, 2014, 36(8): 39-48. doi: 10.3969/j.issn.0253-4193.2014.08.005

Citation:

Yang Kehong, Chu Fengyou, Zhu Jihao, Ma Weilin, Dong Yanhui. Mg/Ca and Sr/Ca ratios of authigenic carbonate minerals and calcareous biogenic shells in the cold-seep carbonates,north of the South China Sea and their environmental implication[J]. Haiyang Xuebao, 2014, 36(8): 39-48. doi: 10.3969/j.issn.0253-4193.2014.08.005

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Mg/Ca and Sr/Ca ratios of authigenic carbonate minerals and calcareous biogenic shells in the cold-seep carbonates,north of the South China Sea and their environmental implication

doi: 10.3969/j.issn.0253-4193.2014.08.005

Key Laboratory of Submarine Geosciences, State Oceanic Administration, Hangzhou 310012, China;Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China

Received Date: 2013-08-12
Rev Recd Date: 2013-10-25

Abstract

Abstract

There are inclusion and pore space structures in the cold-seep carbonates with plenty of biological marks in the north of the South China Sea. The Mg/Ca and Sr/Ca ratios of the carbonate minerals and the calcareous biogenic shells in different structures are analyzed by the electron microprobe.The results show that the Mg/Ca and Sr/Ca ratios of the authigenic carbonate minerals have a range from 0.50 mmol/mol to 39.19 mmol/mol with the mean 12.50 mmol/mol and from 0.06 mmol/mol to 2.90 mmol/mol with the means 0.53 mmol/mol,individually.The Mg/Ca and Sr/Ca ratios of the calcareous biogenic shells have a range from 1.14 mmol/mol to 84.57 mmol/mol with the mean 24.57 mmol/mol and from 0.77 mmol/mol to 1.84 mmol/mol with the means 1.08 mmol/mol,individually. According to the relationship between Mg/Ca and Sr/Ca ratios,the authigenic carbonate minerals have no groups which are all low to middle Mg/Ca ratio and low Sr/Ca ratio,but the calcareous biogenic shells can be divided into two groups,and the one on the groundmass has high Mg/Ca ratio and middle Sr/Ca ratio,and the other one in the inclusions has low Mg/Ca ratio and middle Sr/Ca ratio. Based on the Mg/Ca characteristic,the sedimental environment is discussed with a result that the calcareous biogenic shells on the ground mass grew up in the methane seep environment and the inorganic carbonate minerals influenced their Mg/Ca ratio,but the calcareous biogenic shells in the inclusions grew up in normal environment without methane seep influences,and they entred into the carbonates by bioturbation and/or bioirrigation.Moreover,according to Sr/Ca ratios varies during diagenis,the Sr/Ca ratios of the calcareous biogenic shells on the ground mass may be higher when they formed initiall.The results can give some directions to find chemical proxies of methane seeps.
- Mg/Ca,
- Sr/Ca,
- cold-seep carbonate,
- calcareous biogenic shell,
- north of South China Sea

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References(35)

References

Campbell K A. Hydrocarbon seep and hydrothermal vent paleoenvironments and paleontology: Past developments and future research directions[J]. Palaeogeography,Palaeoclimatology,Palaeoecology,2006,232(2/4): 362-407.

Boetius A,Ravenschlag K,Schubert C J,et al. A marine microbial consortium apparently mediating anaerobic oxidation of methane[J]. Nature,2000,407(6804): 623-626.

Teichert B M A,Eisenhauer A,Bohrmann G,et al. U/Th systematics and ages of authigenic carbonates from Hydrate Ridge,Cascadia Margin: recorders of fluid flow variations[J]. Geochimica et Cosmochimica Acta,2003,67(20): 3845-3857.

陆红锋,刘坚,陈芳,等. 南海台西南区碳酸盐岩矿物学和稳定同位素组成特征——天然气水合物存在的主要证据之一[J]. 地学前缘,2005,12(3): 268-276.

Feng D,Chen D F,Roberts H H. Petrographic and geochemical characterization of seep carbonate from Bush Hill (GC 185) gas vent and hydrate site of the Gulf of Mexico[J]. Marine and Petroleum Geology,2009,26(7): 1190-1198.

Naehr T H,Birgel D,Bohrmann G,et al. Biogeochemical controls on authigenic carbonate formation at the Chapopote "asphalt volcano",Bay of Campeche[J]. Chemical Geology,2009,266(3/4): 390-402.

Bahr A,Pape T,Bohrmann G,et al. Authigenic carbonate precipitates from the NE Black Sea: a mineralogical,geochemical,and lipid biomarker study[J]. International Journal of Earth Sciences,2009,98(3): 677-695.

Mazzini A,Svensen H,Hovland M,et al. Comparison and implications from strikingly different authigenic carbonates in a Nyegga complex pockmark,G11,Norwegian Sea[J]. Marine Geology,2006,231(1/4): 89-102.

Baker P A,Gieskes J M,Elderfield H. Diagenesis of carbonates in deep-sea sediments; evidence from Sr/Ca ratios and interstitial dissolved Sr²⁺ data[J]. Journal of Sedimentary Research,1982,52(1): 71-82.

Hampt G,Delaney M L. Influences on calcite Sr/Ca records from Ceara Rise and other regions: distinguishing ocean history and calcite recrystallization[M]//Shackleton N J,Curry W B,Richter C,et al. Proceedings of the Ocean Drilling Program,Scientific Result. 1997: 154,491-591.

Joseph C,Campbell K A,Torres M E,et al. Methane-derived authigenic carbonates from modern and paleoseeps on the Cascadia margin: Mechanisms of formation and diagenetic signals[J]. Palaeogeography,Palaeoclimatology,Palaeoecology,2013,390: 52-67.

Han X Q,Suess E,Huang Y Y,et al. Jiulong methane reef: Microbial mediation of seep carbonates in the South China Sea[J]. Marine Geology,2008,249(3/4): 243-256.

陈忠,颜文,陈木宏,等. 南海北部大陆坡冷泉碳酸盐结核的发现: 海底天然气渗漏活动的新证据[J]. 科学通报,2006,51(9): 1065-1072.

陆红锋,陈芳,刘坚,等. 南海北部神狐海区的自生碳酸盐岩烟囱——海底富烃流体活动的记录[J]. 地质论评,2006,52(3): 352-357.

杨克红,初凤友,赵建如,等. 南海北部烟囱状冷泉碳酸盐岩的沉积环境分析[J]. 海洋学报,2013,35(2): 82-89.

陈忠,杨华平,黄奇瑜,等. 南海东沙西南海域冷泉碳酸盐岩特征及其意义[J]. 现代地质,2008,22(3): 382-389.

Mook W G. Environmental isotopes in the hydrological cycle: principles and applications[M]//UNESCO/IAEA. Paris,2000: 91-123.

Veizer J,Demovic R. Strontium as a tool in facies analysis[J]. Journal of Sedimentary Research,1974,44(1): 93-115.

Veizer J,Demovic R. Environmental and climatic controlled fractionation of elements in the Mesozoic carbonate sequences of the western Carpathians[J]. Journal of Sedimentary Research,1973,43(1): 258-271.

倪善芹,侯泉林,王安建,等. 碳酸盐岩中锶元素地球化学特征及其指示意义——以北京下古生界碳酸盐岩为例[J]. 地质学报,2010,84(10): 1510-1516.

Bayon G,Pierre C,Etoubleau J,et al. Sr/Ca and Mg/Ca ratios in Niger Delta sediments: Implications for authigenic carbonate genesis in cold seep environments[J]. Marine Geology,2007,241(1/4): 93-109.

Billups K,Schrag D P. Paleotemperatures and ice volume of the past 27 Myr revisited with paired Mg/Ca and ¹⁸O/¹⁶O measurements on benthic foraminifera[J]. Paleoceanography,2002,17(1): 1003,doi: 10.1029/2000PA000567.

李建如. 有孔虫壳体的Mg/Ca比值在古环境研究中的应用[J]. 地球科学进展,2005,20(8): 815-822.

Mashiotta T A,Lea D W,Spero H J. Glacial-interglacial changes in Subantarctic sea surface temperature and δ¹⁸O-water using foraminiferal Mg[J]. Earth and Planetary Science Letters,1999,170(4): 417-432.

Lear C H,Elderfield H,Wilson P A. Cenozoic deep-sea temperatures and global ice volumes from Mg/Ca in benthic foraminiferal calcite[J]. Science,2000,287(5451): 269-272.

Nürnberg D,Bijma J,Hemleben C. Assessing the reliability of magnesium in foraminiferal calcite as a proxy for water mass temperatures[J]. Geochimica et Cosmochimica Acta,1996,60(5): 803-814.

Torres M E,Mix A C,Kinports K,et al. Is methane venting at the seafloor recorded by δ¹³C of benthic foraminifera shells？[J]. Paleoceanography,2003,18(3): 1062,doi: 10.1029/2002PA000824.

Rio M,Roux M,Renard M,et al. Chemical and isotopic features of present day bivalve shells from hydrothermal vents or cold seeps[J]. PALAIOS,1992,7(4): 351-360.

Luff R,Wallmann K,Aloisi G. Numerical modeling of carbonate crust formation at cold vent sites: significance for fluid and methane budgets and chemosynthetic biological communities[J]. Earth and Planetary Science Letters,2004,221(1/4): 337-353.

Canet C,Anadón P,Alfonso P,et al. Gas-seep related carbonate and barite authigenic mineralization in the northern gulf of California[J]. Marine and Petroleum Geology,2013,43: 147-165.

Stakes D S,Orange D,Paduan J B,et al. Cold-seeps and authigenic carbonate formation in Monterey Bay,California[J]. Marine Geology,1999,159(1/4): 93-109.

Chen Y F,Matsumoto R,Paull C K,et al. Methane-derived authigenic carbonates from the northern Gulf of Mexico——MD02 Cruise[J]. Journal of Geochemical Exploration,2007,95(1/3): 1-15.

邓文峰,韦刚健,李献华. 有孔虫的高精度Mg/Ca比值的ICP-AES分析[J]. 海洋地质与第四纪地质,2005,25(2): 147-151.

Wien K,Kölling M,Schulz H D. Close correlation between Sr/Ca ratios in bulk sediments from the southern Cape Basin and the SPECMAP record[J]. Geo-Marine Letters,2005,25(4): 265-271.

向荣,刘芳,陈忠,等. 冷泉区底栖有孔虫研究进展[J]. 地球科学进展,2010,25(2): 193-202.

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