To fill the gap of the nomenclature of altered igneous rocks,a new exhaustive multidimensional classification scheme consistent with the International Union of Geological Sciences(IUGS)is proposed.Our procedure is bas...To fill the gap of the nomenclature of altered igneous rocks,a new exhaustive multidimensional classification scheme consistent with the International Union of Geological Sciences(IUGS)is proposed.Our procedure is based on an extensive database of major element compositions of a total of 32948 relatively fresh rock samples.展开更多
After the global cratonization at the end of Neoarchean,the Great Oxidation Event(GOE)followed,marking a significant new period of Earth’s evolution.The Paleoproterozoic rock and sedimentary records are the direct ev...After the global cratonization at the end of Neoarchean,the Great Oxidation Event(GOE)followed,marking a significant new period of Earth’s evolution.The Paleoproterozoic rock and sedimentary records are the direct evidence of the GOE[1],the substantial progress has been made in the oxygen,sulfur and carbon isotope studies of sedimentary rocks,as well as some unconventional isotopes,focusing on the timeframe,initiation process,and mechanism of the GOE,the extremely d13 Ccarb-positive excursion event(the Lomagundi-Jatuli event,LJE),and the carbon cycle perturbation events after the GOE.The initiation of the GOE was intermittent,and the atmosphere-ocean system experienced multi-processs of increasing and decreasing oxygen during the LJE.After that,global organic carbon burial increased significantly and lasted a long time and ended with a d13 Ccarbnegative excursion event(the Shunga-Francevillian event,SFE).The lithostratigraphic correlation work has been summarized and attempted to combine with redox studies to discuss the mechanism of the GOE[2].However,further in-depth search is necessary,including the improvement GOE time series framework.One research challenge is the high degree of fit of detailed rock and sedimentary records to isotopic and chemical records.The formation of giant cratonic continents at the end of the Neoarchean and its unprecedented impacts may provide a new theoretical support for the mechanism of the GOE.The strata at the end of the Neoarchean to the Paleoproterozoic(a critical transition period)in China are rich and varied,including deposits of shallow sea-lagoon facies with thick layers that do not well develop in the Huronian and Transvaal basins.The geology of the North China Craton(NCC)and the Yangtze Craton(YC)in China provides a valuable opportunity.展开更多
基金funded by DGAPA-PAPIIT grant IN100816 and IER-UNAM internal grant to the first author.
文摘To fill the gap of the nomenclature of altered igneous rocks,a new exhaustive multidimensional classification scheme consistent with the International Union of Geological Sciences(IUGS)is proposed.Our procedure is based on an extensive database of major element compositions of a total of 32948 relatively fresh rock samples.
基金supported by the National Natural Science Foundation of China(42220104008 and 92162323)Chinese Academy of Sciences(XDB0710000)+1 种基金Yunnan Province Science and Technology Department(202301BF070001-020)Yunnan Province Natural Resources Department(202305AD160031)。
文摘After the global cratonization at the end of Neoarchean,the Great Oxidation Event(GOE)followed,marking a significant new period of Earth’s evolution.The Paleoproterozoic rock and sedimentary records are the direct evidence of the GOE[1],the substantial progress has been made in the oxygen,sulfur and carbon isotope studies of sedimentary rocks,as well as some unconventional isotopes,focusing on the timeframe,initiation process,and mechanism of the GOE,the extremely d13 Ccarb-positive excursion event(the Lomagundi-Jatuli event,LJE),and the carbon cycle perturbation events after the GOE.The initiation of the GOE was intermittent,and the atmosphere-ocean system experienced multi-processs of increasing and decreasing oxygen during the LJE.After that,global organic carbon burial increased significantly and lasted a long time and ended with a d13 Ccarbnegative excursion event(the Shunga-Francevillian event,SFE).The lithostratigraphic correlation work has been summarized and attempted to combine with redox studies to discuss the mechanism of the GOE[2].However,further in-depth search is necessary,including the improvement GOE time series framework.One research challenge is the high degree of fit of detailed rock and sedimentary records to isotopic and chemical records.The formation of giant cratonic continents at the end of the Neoarchean and its unprecedented impacts may provide a new theoretical support for the mechanism of the GOE.The strata at the end of the Neoarchean to the Paleoproterozoic(a critical transition period)in China are rich and varied,including deposits of shallow sea-lagoon facies with thick layers that do not well develop in the Huronian and Transvaal basins.The geology of the North China Craton(NCC)and the Yangtze Craton(YC)in China provides a valuable opportunity.
