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1.The frontal structure of Longmenshan in the west of Sichuan is very complex, showing intense structure deformation in overthrust belt, high structure amplitude, steep stratigraphic dip, developed fault blocks, complex seismic wave field, frequent change of lateral velocity, and poor image of post-stack time migration processing.
摘要川西龙门山前缘构造非常复杂,逆掩推覆构造带构造形变强烈,构造幅度大,地层倾角陡,断块发育,地震波场复杂,速度横向变化大,常规叠后时间偏移处理成像效果较差。收藏指正
2.Thestructural top and close-to-fault parts of macro-axis of the high and steep anticline on the ancient updeclivity formed during Caledonian Movement are the favourable regions for explorating natural gas.
加里东期古上斜坡的高陡背斜构造高点、长轴且紧靠断层的部位是勘探天然气的有利地区。收藏指正
3.The main conclusions are as follows; Firstly, under the influence of three phases of episodic activities, three two-order sequences is composed of three depositional cycles and three regional unconformities; Secondly, under the control of structure activities such as fault-block activities and the influence of three-order climate cycles and source recharge, lower Cretaceous can be divided into six three-order sequence; Thirdly, because fault activities is weak and fault slope is gently, fan deltas exist in steep slopes in early and later stages and subaqueous fans exist and turbidite fans exist in troughs in middle stage.
主要的结论为:其一,受三期幕式活动影响,断陷形成了3个大的沉积旋回和3个区域不整合面,构成了下白垩统3个二级层序;其二,受断陷内翘倾和块断等构造活动的控制,以及三级气候旋回和物源供给因素的影响,下白垩统划分出6个三级层序;其三,在单断断陷湖盆中,湖泊阶段的早、晚期由于凹陷边界断层活动较弱,断面较缓,陡坡可以发育扇三角洲,在湖泊阶段的中期主要为水下扇砂砾岩体,并在洼槽区发育浊积扇。收藏指正
4.In the light of independent bogie control and current-slip control for AC locomotive, the paper Discusses the menthod of fault judging & disposing for speed transducer, as well as solutions to main problems Such as slide/slip depression utilizing steep characteristics of asynchronous motor during speed signalProcessing.
从交流传动机车的角度出发,主要针对转向架独立控制方式和电流一转差控制方法,讨论了速度传感器及其故障时的判别和处理方法,以及在转速处理环节利用异步电机陡特性抑制空转(滑行)等几个主要问题。收藏指正
5.Palaeogene Biyang fault depressed lacustrine basin experiences four evolutionary phases:foothill flooding depression→sulfate coastal/shallow lake→normal lake→carbonate or sulfate coastal/shallow lake, in pace of this, the evolutionary process of sedimentary wedge is from fluvial fan→steep slope fan delta→gentle slope fan delta→fluvial fan in southern margin which belongs to steep slope zone, and is fluvial fan→delta→fluvial fan in northern margin which belongs to gentle slope zone.
早第三纪泌阳断陷湖盆经历了四个演化历程:山前洪水洼地→硫酸盐型滨浅湖→正常湖泊→碳酸盐型或硫酸盐型滨浅湖; 相应地,湖盆南部边缘(陡坡带)和北部边缘(缓坡带)沉积楔状体演变过程分别为:冲积扇→陡坡型扇三角洲→缓坡型扇三角洲→冲积扇和冲积扇→三角洲→冲积扇。收藏指正
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