In the continental lake basin whose structures were extraordinarily active, tectonism is an important factor in controlling the sequence and the depositional filling of the basin. This article reports the assemble pat...In the continental lake basin whose structures were extraordinarily active, tectonism is an important factor in controlling the sequence and the depositional filling of the basin. This article reports the assemble patterns of syndepositional fault in the third member of Shahejie （沙河街） Formation in Beitang （北塘） sag. The results show that the comb-shape fracture system and the fracture transformation zone were developed in Beitang sag. These assemble patterns obviously controlled the sand-body and spatial distribution of sedimentary system. However, the steep slope belt of fault terrace, the multistage slope belt and the low uplift gentle slope belt controlled the development of sequence styles. Analyses of the spatial-temporal relationship of the assemble pattern of syndepositional faults and the sedimentary system help predict the favorable exploration zone.展开更多
Based on the application of the EBM basin modeling software and 2-D seismic profiles, the Paleogene and Neogene subsidence histories of the Beitang （北塘） sag are simulated with the back-stripping technique, and the...Based on the application of the EBM basin modeling software and 2-D seismic profiles, the Paleogene and Neogene subsidence histories of the Beitang （北塘） sag are simulated with the back-stripping technique, and the relationship between subsidence character and tectonic revolution is discussed. Moreover, the result of the basin modeling reveals that the subsidence history of the Beitang sag has the characteristics of several geological periods, and these succeeding periods have shown certain inheritance and difference characteristics. At the early （Es3） and middle （Es2-Es1） rifting periods, the subsidence reaction of the Beitang sag was mainly in the charge of tectonic activity, while at the late （Ng-Nm＋Q） rifting period-post rifting period and post rifting subsidence-acceleration period-the subsidence type is mainly that of thermal subsidence or regional depression effect; from the beginning of the subsidence history to the end, the reason for the basin subsidence has changed from tectonic activity to non-tectonic activity.展开更多
With the rapid development of the petroleum industry and oil spill occurredfrequently in recent years, marine oil pollution is serious. Oil pollution from terrestrialsources is an important source of marine oil pollut...With the rapid development of the petroleum industry and oil spill occurredfrequently in recent years, marine oil pollution is serious. Oil pollution from terrestrialsources is an important source of marine oil pollution. In China, oil pollution fromterrestrial sources accounted for more than 80% of the total marine pollutants. Wetlandhas great ecological and environmental value, and researches found that wetland hasthe function of purifying oil pollutants. Beitang Estuary in Tianjin Binhai New Area is amajor fishery port, and also the main sewage outfall. In recent years, with the increaseof oil pollution from terrestrial sources, water quality in Beitang River is deteriorating.The Beitang Estuary has a large area of natural Spartina alterniflora wetland, whichmay effectively remove oil pollution. Environmental investigation was carried out on thewharf, channel and coastal zone near Beitang Estuary. The results showed that theeutrophication in Beitang Estuary is serious, and the water quality is inferior to theworse than the fourth class of sea water quality. Inorganic nitrogen, active phosphateand petroleum hydrocarbons are the main pollutants. Reed, Spartina alterniflora andSeepweed were the dominant species in the Beitang Estuary, and petroleumhydrocarbons were detected in the three plants. It showed that the Beitang Estuary waspolluted by petroleum hydrocarbons, and the three kinds of plants have the ability toabsorb petroleum hydrocarbons. Survey results showed that, whether in the surfaceseawater or sediment, the oil content near the wharf was higher than the channel; thepetroleum hydrocarbon content in the channel was higher than the coastal zone. Theroots, stems and leaves of Spartina alterniflora can intercept oil pollution from terrestrialsources. In addition to absorbing petroleum hydrocarbons, Spartina alterniflora alsoprovides a good habitat for microorganisms,to accelerate microbial degradation ofpetroleum hydrocarbon. Spartina alterniflora wetland has the obvious effect forreducing terrigenous oil pollutants.展开更多
As a summary of the finding from the investigation of fishes in Beitang Estuary,Tianjin,the paper deals with the young fishes 'biomass, composition and change, and studies the spawning habit, spawning time, fecund...As a summary of the finding from the investigation of fishes in Beitang Estuary,Tianjin,the paper deals with the young fishes 'biomass, composition and change, and studies the spawning habit, spawning time, fecundity, age structure and type of the spawning stocks in the estuary.展开更多
基金supported by the Research Institute of Explora-tion and Development,Petro China Dagang Oilfield Company,the National Natural Science Foundation of China (No. 40872077)the Open Research Program of State Key Labora-tory of Geological Processes and Mineral Resources,China University of Geosciences (No.GPMR200913)the Foun-dation of Key Laboratory of Tectonics and Petroleum Re-sources of Ministry of Education,China University of Geo-sciences (No.TPR-2009-19)
文摘In the continental lake basin whose structures were extraordinarily active, tectonism is an important factor in controlling the sequence and the depositional filling of the basin. This article reports the assemble patterns of syndepositional fault in the third member of Shahejie （沙河街） Formation in Beitang （北塘） sag. The results show that the comb-shape fracture system and the fracture transformation zone were developed in Beitang sag. These assemble patterns obviously controlled the sand-body and spatial distribution of sedimentary system. However, the steep slope belt of fault terrace, the multistage slope belt and the low uplift gentle slope belt controlled the development of sequence styles. Analyses of the spatial-temporal relationship of the assemble pattern of syndepositional faults and the sedimentary system help predict the favorable exploration zone.
基金supported by the National Natural Science Foundation of China (Nos. 40872077 and 40702023)the Key Laboratory of Tectonics and Petroleum Resources of the Ministry of Education, China University of Geosciences, Wuhan
文摘Based on the application of the EBM basin modeling software and 2-D seismic profiles, the Paleogene and Neogene subsidence histories of the Beitang （北塘） sag are simulated with the back-stripping technique, and the relationship between subsidence character and tectonic revolution is discussed. Moreover, the result of the basin modeling reveals that the subsidence history of the Beitang sag has the characteristics of several geological periods, and these succeeding periods have shown certain inheritance and difference characteristics. At the early （Es3） and middle （Es2-Es1） rifting periods, the subsidence reaction of the Beitang sag was mainly in the charge of tectonic activity, while at the late （Ng-Nm＋Q） rifting period-post rifting period and post rifting subsidence-acceleration period-the subsidence type is mainly that of thermal subsidence or regional depression effect; from the beginning of the subsidence history to the end, the reason for the basin subsidence has changed from tectonic activity to non-tectonic activity.
基金supported by the Project of Tianjin with Spill Oil Accident from Penglai Oil field 19-3 Compensation (No. 19-3BC2014-05)Tianjin Municipal Science and Technology Planning Project (15ZCZDSF00620, 15JCYBJC23200)
文摘With the rapid development of the petroleum industry and oil spill occurredfrequently in recent years, marine oil pollution is serious. Oil pollution from terrestrialsources is an important source of marine oil pollution. In China, oil pollution fromterrestrial sources accounted for more than 80% of the total marine pollutants. Wetlandhas great ecological and environmental value, and researches found that wetland hasthe function of purifying oil pollutants. Beitang Estuary in Tianjin Binhai New Area is amajor fishery port, and also the main sewage outfall. In recent years, with the increaseof oil pollution from terrestrial sources, water quality in Beitang River is deteriorating.The Beitang Estuary has a large area of natural Spartina alterniflora wetland, whichmay effectively remove oil pollution. Environmental investigation was carried out on thewharf, channel and coastal zone near Beitang Estuary. The results showed that theeutrophication in Beitang Estuary is serious, and the water quality is inferior to theworse than the fourth class of sea water quality. Inorganic nitrogen, active phosphateand petroleum hydrocarbons are the main pollutants. Reed, Spartina alterniflora andSeepweed were the dominant species in the Beitang Estuary, and petroleumhydrocarbons were detected in the three plants. It showed that the Beitang Estuary waspolluted by petroleum hydrocarbons, and the three kinds of plants have the ability toabsorb petroleum hydrocarbons. Survey results showed that, whether in the surfaceseawater or sediment, the oil content near the wharf was higher than the channel; thepetroleum hydrocarbon content in the channel was higher than the coastal zone. Theroots, stems and leaves of Spartina alterniflora can intercept oil pollution from terrestrialsources. In addition to absorbing petroleum hydrocarbons, Spartina alterniflora alsoprovides a good habitat for microorganisms,to accelerate microbial degradation ofpetroleum hydrocarbon. Spartina alterniflora wetland has the obvious effect forreducing terrigenous oil pollutants.
文摘As a summary of the finding from the investigation of fishes in Beitang Estuary,Tianjin,the paper deals with the young fishes 'biomass, composition and change, and studies the spawning habit, spawning time, fecundity, age structure and type of the spawning stocks in the estuary.
