| Citation: |
LIU Hui-Dong, TANG Fu-Gui, WANG Feng-Hua, LUO Shao-Jun, LIAO Shi-Ting, SHAO Xiao-Yang, ZHANG Zhong-Jin. The Geochemistry fea-tures and zircon LA-ICP-MS U-Pb Ages of the volcanic rocks from the Pre-Devonian strata in Dayaoshan area,North Guangdong Province[J]. South China Geology, 2014, (4): 328-341. doi: 10.3969/j.issn.1007-3701.2014.04.004
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The Geochemistry fea-tures and zircon LA-ICP-MS U-Pb Ages of the volcanic rocks from the Pre-Devonian strata in Dayaoshan area,North Guangdong Province
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Abstract
By 1: 50000 geological mapping and measured sections, the first discovery of multi-layer volcanic rock in Sinian-Cambrian strata in Dayaoshan area, North Guangdong Province. Those volcanic rocks are mainly com-posing of volcano-sedimentary clastic rocks including metamorphic tuffaceous inequigranular lithic quartz sand-stone, metamorphic tuffaceous inequigranular feldspar quartz sandstone, sedimentary tuff, locally variable rhy-olitic ignimbrite. The zircons from variable rhyolitic ignimbrite, metamorphic tuffaceous sandstone were deter-mined by LA-ICP-MS method, and yielded 206Pb/238U ages of 614 ~ 2869 Ma, the dispersed ages indicated the detrital zircons are of multi sources. The difference between zircon U-Pb ages and strata formation time indicated that the formation age of Pre-Devonian strata of Dayaoshan area, Northern Guangdong Province need further re-search. -
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LIU Hui-Dong, TANG Fu-Gui, WANG Feng-Hua, LUO Shao-Jun, LIAO Shi-Ting, SHAO Xiao-Yang, ZHANG Zhong-Jin. The Geochemistry fea-tures and zircon LA-ICP-MS U-Pb Ages of the volcanic rocks from the Pre-Devonian strata in Dayaoshan area,North Guangdong Province[J]. South China Geology, 2014, (4): 328-341. doi: 10.3969/j.issn.1007-3701.2014.04.004
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