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您的检索式：作者名="Roger BUICK"
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| 1 | Oil-bearing fluid inclusions from the Palaeoproterozoic:A review of biogeochemical results from time-capsules >2.0 Ga old显示文摘The observation of oil inclusions trapped prior to 2.0 Ga in Palaeoproterozoic rocks and the ability to obtain detailed molecular geochemical information from them provide a robust way for understanding the early biogeochemical evolution of the Earth. Oil-bearing fluid inclusions (FI) in ca. 2.45 Ga fluvial metaconglomerate of the Matinenda Formation at Elliot Lake, Canada were trapped in quartz and feldspar during diagenesis and early metamorphism of the host rock, probably before ca. 2.2 Ga. The 2.1 Ga FA Formation sandstone of the Franceville Basin in Gabon that hosts the Oklo natural fission reactors has also been discovered to contain abundant Palaeoproterozoic oil-bearing FIs. This oil occurs within H2O and CO2-dominated inclusions trapped in syntaxial quartz overgrowths and intragranular and transgranular microfractures in detrital quartz, and was most likely trapped 2.1-1.98 Ga. Molecular geochemical analyses of both FI oils reveal a wide range of compounds, including n-alkanes, isoprenoids, monomethylalkanes, aromatic hydrocarbons, and trace amounts of complex multi-ring biomarkers including terpanes, hopanes, methylhopanes, steranes and diasteranes. To ensure a reliable interpretation of oil inclusions, a comprehensive series of outside-rinse blanks and procedural system blanks was analysed by gas chromatography-mass spectrometry; quantitative amounts of the hydrocarbons in these blanks were compared to the FI extracts, so as to provide confidence limits on the experimental integrity of each compound class. Maturity ratios based on reliably detected compound classes show that the FI oils were generated in the oil window, with no evidence of extensive thermal cracking. The presence of biomarkers for cyanobacteria and eukaryotes derived from and trapped in rocks deposited prior to 2.0 Ga is consistent with early evolution of oxygenic photosynthesis and suggests that some aquatic settings had become sufficiently oxygenated for sterol biosynthesis by this time. The extraction of biomarker molecules from Palaeoproterozoic oil-bearing FIs thus establishes a new method, using low detection limits and system blank levels, to trace evolution through Earth's early history that avoids the potential contamination problems affecting shale-hosted hydrocarbons. | Simon C. GEORGE Adriana DUTKIEWICZ Herbert VOLK John RIDLEY David J. MOSSMAN Roger BUICK | 2009 | Science China Earth Sciences2009，52，1： | 3 |
| 2 | 太古代油——在距今35亿年~25亿年间油气曾广泛生成和运移显示文摘在澳大利亚皮尔巴拉克拉通大古代福蒂斯丘群发现了油气生成和运移的迹象,即铀、钍、独居石周围沥青结核的存在。研究表明太古界页岩在太古代生油,在晚太古代或早元古代早期变质作用以前发生了运移。在大古代沉积盆地中,原始细菌生物群易生成Ⅰ型干酪根。埋藏作用的加强,可促使油气生成和排出。渗透性岩层的发育,具备了储层条件,因此在太古代稳定克拉通内可望找到有价值的油气藏。但大部分克拉通变形变质作用强,圈闭、盖层已被破坏或消失,导致油气丧失。 | Roger Buick 吴富强 | 1998 | 国外油气勘探1998，10，6： | 2 |
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