Abstract
Detailed characterization of diagenetic fluid behaviour and evolution is commonly hindered by shortage of appropriate and economic methods to carry out in situ analysis in the tiny diagenetic mineral crystals. Using micromill sampling method, this study presents in situ stable isotopic data for the growth zones of saddle dolomite crystals in the hydrothermally-altered dolostones of Upper Cambrian (Furongian) at Keping, Tarim Basin, NW China. These data show minor and large variations in δ 13C (−0.7‰ to −1.5‰ VPDB) and δ 18O (−8.3‰ to −13.8‰ VPDB), respectively, from the cores to outer rims of the dolomite crystals and suggest that saddle dolomites precipitated from dolomitizing fluids with similar carbon sources but oscillatory temperatures during different formation stages. This scenario is confirmed by microthermometry of fluid inclusions within the growth zones of dolomite crystals. This study indicates that in situ isotope analysis could provide more detailed information related to the source and pathway of dolomitizing fluids, facilitating better characterization of dolomitizing fluids and processes.
Article PDF
Similar content being viewed by others
References
Machel H G. Fluid flow direction during dolomite formation as deduced from trace element trends. In: Shukla V, Baker P A, eds. Sedimentology and Geochemistry of Dolostones. SEPM Spec Publ, 1988, 115–125
Wilson E N, Hardie L A, Phillips O M. Dolomitization front geometry, fluid flow patterns, and the origin of massive dolomite: The Triassic Latemar buildup, northern Italy. Am J Sci, 1990, 290: 741–796
Qing H R, Mountjoy E W. Large-scale fluid flow in the Middle Devonian Presqu’ile Barrier, Western Canada Sedimentary Basin. Geology, 1992, 20: 903–906
Qing H R, Mountjoy E W. Formation of coarsely crystalline, hydrothermal dolomite reservoirs in the Presqu’ile Barrier, Western Canada Sedimentary Basin. AAPG Bull, 1994, 78: 55–77
Hitzman M, Allan J, Beaty D. Regional dolomitization of the Waulsortian limestone in southeastern Ireland: Evidence of large-scale fluid flow driven by the Hercynian orogeny. Geology, 1998, 26: 547–550
Machel H G, Cavell P A. Low-flux, tectonically-induced squeegee fluid flow (“hot flash”) into the Rocky Mountain Foreland Basin. Bull Can Petrol Geol, 1999, 47: 510–533
Buschkuehle B E, Machel H G. Diagenesis and paleofluid flow in the Devonian Southesk-Cairn carbonate complex in Alberta, Canada. Mar Petrol Geol, 2002, 19: 219–227
Huang S J, Qing H R, Pei C R, et al. Strontium concentration, isotope composition and dolomitization fluids, in the Feixianguan Formation of Triassic, Eastern Sichuan of China (in Chinese). Acta Petrol Sin, 2006, 22: 2123–2132
Smalley P C, Stijfhoorn D E, Råheim A, et al. The laser microprobe and its application to the study of C and O isotopes in calcite and aragonite. Sed Geol, 1989, 65: 211–221
Sharp Z. In situ laser microprobe techniques for stable isotope analysis. Chem Geol, 1992, 101: 3–19
Sharp Z D, Cerling T E. A laser GC-IRMS technique for in situ stable isotope analyses of carbonates and phosphates. Geochem Cosmochim Acta, 1996, 60: 2909–2916
Wurster C M, Patterson W P, Cheatham M M. Advances in micromilling techniques: a new apparatus for acquiring high-resolution oxygen and carbon stable isotope values and major/minor elemental ratios from accretionary carbonate. Comput Geosci, 1999, 25: 1159–1166
Fouke B W, Rakovan J. An integrated cathodoluminescence video-capture microsampling system. J Sed Res, 2001, 71: 509–513
Spötl C, Mattey D. Stable isotope microsampling of speleothems for palaeoenvironmental studies: A comparison of microdrill, micromill and laser ablation techniques. Chem Geol, 2006, 235: 48–58
Gu J Y. Characteristics and origin analysis of dolomite in Lower Ordovician of Tarim Basin (in Chinese). Xinjiang Petrol Geol, 2000, 21: 120–122
Cai C F, Hu W S, Worden R H. Thermochemical sulphate reduction in Cambro-Ordovician carbonates in Central Tarim. Mar Petrol Geol, 2001, 18: 729–741
Zheng H R, Wu M B, Wu X W, et al. Oil-gas exploration prospect of dolomite reservoir in the Lower Paleozoic of Tarim Basin (in Chinese). Acta Petrol Sin, 2007, 28: 1–8
Zhou Z Y, Zhao Z X, Hu Z X, et al. Stratigraphy of the Tarim Basin (in Chinese). Beijing: Science Press, 2001. 1–359
Chen H L, Yang S F, Dong C W, et al. Confirmation of Permian basite zone in Tarim Basin and its tectonic significance (in Chinese). Geochimica, 1997, 126: 77–87
Tang L J, Zhang Y W, Jin Z J, et al. Opening-closing cycles of the Tarim and Qaidam basins, northwestern China (in Chinese). Geol Bull Chin, 2004, 23: 254–260
Jia C Z. Tectonic Characteristics and Petroleum, Tarim Basin, China (in Chinese). Beijing: Petroleum Industry Press, 1997. 1–295
Qu G S, Li Y G, Chen J, et al. Geometry, kinematics and tectonic evolution of Kepingtage thrust system (in Chinese). Earth Sci Front, 2003, 10: 142–152
Song F M, Min W, Han Z J, et al. Cenozoic deformation and propagation of the Kalpintag fold nappe (in Chinese). Seismol Geol, 2006, 28: 224–233
Shu L S, Guo Z J, Zhu W B, et al. Post-collision tectonism and basin-range evolution in the Tianshan belt (in Chinese). Geol J Chin Univ, 2004, 10: 393–404
Zhai D Y, Xiao J L, Zhou L, et al. Holocene East Asian monsoon variation inferred from species assemblage and shell chemistry of the ostracodes from Hulun Lake, Inner Mongolia. Quatern Res, 2011, 75: 512–522
Warren J. Dolomite: Occurrence, evolution and economically important associations. Earth-Sci Rev, 2000, 52: 1–81
Carmichael S K, Ferry J M, McDonough W F. Formation of replacement dolomite in the Latemar carbonate buildup, Dolomites, Northern Italy: Part 1. Field relations, mineralogy, and geochemistry. Am J Sci, 2008, 308: 851–884
Yang S F, Li Z L, Chen H L, et al. Permian bimodal dyke of Tarim Basin, NW China: Geochemical characteristics and tectonic implications. Gondwana Res, 2007, 12: 113–120
Tian W, Campbell I H, Allen C M, et al. The Tarim picrite-basalt-rhyolite suite, a Permian flood basalt from northwest China with contrasting rhyolites produced by fractional crystallization and anatexis. Contrib Mineral Petrol, 2010, 160: 407–425
Zhang C L, Xu Y G, Li Z X, et al. Diverse Permian magmatism in the Tarim Block, NW China: Genetically linked to the Permian Tarim mantle plume? Lithos, 2010, 119: 537–552
Author information
Authors and Affiliations
Corresponding author
Additional information
This article is published with open access at Springerlink.com
Rights and permissions
This article is published under an open access license. Please check the 'Copyright Information' section either on this page or in the PDF for details of this license and what re-use is permitted. If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and re-use information, please contact the Rights and Permissions team.
About this article
Cite this article
Dong, S., Chen, D., Qing, H. et al. In situ stable isotopic constraints on dolomitizing fluids for the hydrothermally-originated saddle dolomites at Keping, Tarim Basin. Chin. Sci. Bull. 58, 2877–2882 (2013). https://doi.org/10.1007/s11434-013-5801-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11434-013-5801-7