The basement of the Philippine Mobile Belt (PMB) is mainly composed of ophiolites that are mostly overlain by Paleogene to Miocene turbidites in central Luzon.To clarify the geological development of the PMB with resp...The basement of the Philippine Mobile Belt (PMB) is mainly composed of ophiolites that are mostly overlain by Paleogene to Miocene turbidites in central Luzon.To clarify the geological development of the PMB with respect to the initial stage of the arc volcanism(eg.Yumul et al.,2003,2008;展开更多
The sand-conglomerate fans are the major depositional systems in the lower third member of Shahejie Formation in Shengtuo area, which formed in the deep lacustrine environment characterized by steep slope gradient, ne...The sand-conglomerate fans are the major depositional systems in the lower third member of Shahejie Formation in Shengtuo area, which formed in the deep lacustrine environment characterized by steep slope gradient, near sources and intensive tectonic activity. This work was focused on the sedimentary feature of the glutenite segment to conduct the seismic sedimentology research. The near-shore subaqueous fans and its relative gravity channel and slump turbidite fan depositions were identified according to observation and description of cores combining with the numerous data of seismic and logging. Then, the depositional model was built depending on the analysis of palaeogeomorphology. The seismic attributes which are related to the hydrocarbon but relative independent were chosen to conduct the analysis, the reservoir area of the glutenite segment was found performing a distribution where the amplitude value is relatively higher, and finally the RMS amplitude attribute was chosen to conduct the attribute predicting. At the same time, the horizontal distribution of the sedimentary facies was analyzed qualitatively. At last, the sparse spike inversion method was used to conduct the acoustic impedance inversion, and the inversion result can distinguish glutenite reservoir which is greater than 5 m. This method quantitatively characterizes the distribution area of the favorable reservoir sand.展开更多
The Nankai Trough has a 1300-year record of generating large earthquakes(M_w】8)with a recurrence time of～100-200 a,but unfortunately,we don’t know the frequency of earthquakes before.Results from recent expeditions...The Nankai Trough has a 1300-year record of generating large earthquakes(M_w】8)with a recurrence time of～100-200 a,but unfortunately,we don’t know the frequency of earthquakes before.Results from recent expeditions of NanTroSEIZE Stage 1 IODP 314/315/316 recovered many cycles of turbidites since late Pleistocene,which are triggered during the past earthquake shaking.Our purpose is展开更多
文摘The basement of the Philippine Mobile Belt (PMB) is mainly composed of ophiolites that are mostly overlain by Paleogene to Miocene turbidites in central Luzon.To clarify the geological development of the PMB with respect to the initial stage of the arc volcanism(eg.Yumul et al.,2003,2008;
基金Project(41172109)supported by the National Natural Science Foundation of ChinaProject(20110003110014)supported by the ResearchFoundation for the Doctoral Program of Higher Education,China
文摘The sand-conglomerate fans are the major depositional systems in the lower third member of Shahejie Formation in Shengtuo area, which formed in the deep lacustrine environment characterized by steep slope gradient, near sources and intensive tectonic activity. This work was focused on the sedimentary feature of the glutenite segment to conduct the seismic sedimentology research. The near-shore subaqueous fans and its relative gravity channel and slump turbidite fan depositions were identified according to observation and description of cores combining with the numerous data of seismic and logging. Then, the depositional model was built depending on the analysis of palaeogeomorphology. The seismic attributes which are related to the hydrocarbon but relative independent were chosen to conduct the analysis, the reservoir area of the glutenite segment was found performing a distribution where the amplitude value is relatively higher, and finally the RMS amplitude attribute was chosen to conduct the attribute predicting. At the same time, the horizontal distribution of the sedimentary facies was analyzed qualitatively. At last, the sparse spike inversion method was used to conduct the acoustic impedance inversion, and the inversion result can distinguish glutenite reservoir which is greater than 5 m. This method quantitatively characterizes the distribution area of the favorable reservoir sand.
基金supported both by J-DESC(Japan Drilling Earth Science Consortium)the National Natural Science Foundations of China(No.40806019 and 40876022)
文摘The Nankai Trough has a 1300-year record of generating large earthquakes(M_w】8)with a recurrence time of～100-200 a,but unfortunately,we don’t know the frequency of earthquakes before.Results from recent expeditions of NanTroSEIZE Stage 1 IODP 314/315/316 recovered many cycles of turbidites since late Pleistocene,which are triggered during the past earthquake shaking.Our purpose is
