弧前盆地

综述了弧前盆地的沉降机制、充填序列及主要识别标志。

The subsidence mechanism , infilling sequence and main recognition criteria of forearc basin are reviewed .

中侏罗世克拉通边缘坳陷盆地、白垩纪弧前盆地和晚白垩世末&新生代弧后裂陷盆地等3个构造演化阶段。

- Middle Jurassic depression on a cratonic margin , Cretaceous forearc basin and Latest Cretaceous-Cenozoic backarc basin .

弧前盆地研究进展综述

Overview of research advance on forearc basins

缅甸弧前盆地和弧后盆地都是以中生代地层为基底的新生代沉积盆地。

Fore-arc basin and back-arc basin in Burma are Cenozoic basins on basement of Mesozoic strata .

弧前盆地顺北吕宋海槽向北延伸，穿越台东海槽后与台湾陆上的台东纵谷相接。

The fore-arc basin extended along North Luzon Trough and connected to Taitung Longitudinal Valley after crossing the Taitung Trough .

晚三叠世沉积盆地分属周缘前陆盆地、弧前盆地和弧后前陆盆地；

In the Late Triassic , the sedimentary basins are divided into peripheral foreland basin , forearc basin and retro-arc foreland basin .

结合其它资料，探讨了这套浊流沉积的沉积环境，认为它形成于位于消减带和海沟之间的弧前盆地环境。

Combined with the analysis of the other sedimentary characteristics and tectonic backgrounds , it was concluded that this turbidite suite was fromed in a fore-arc basin .

弧前盆地油气藏的保存条件较差，逆断层以及褶皱脊部会发育一系列张性断层，容易导致油气逸散。

Preservation condition of reservoirs in fore-arc basin is poor , reverse fault and crest faults in fold may easily lead effusion of the oil and gas .

弧前盆地圈闭类型较多，包括不整合圈闭、沿盆地轴向发育的一系列背斜、断背斜圈闭以及构造-岩性等复合圈闭。

There are many type of trap in fore-arc basin , including unconformity traps , anticlinal and faulted anticlinal traps developed along the basin axial and structure-lithology traps .

特殊的构造部位，弱的变形、变质和富有特色的沉积序列，砂岩碎屑组分是判别化石弧前盆地的主要标志。

The criteria recognizing fossil forearc basin are presented and discussed in geotectonic position , deformation and metamorphism , sedimentary sequence and model compositions of volcano plutonic sandstone suits .

岛弧为大型背形结构，雅满苏断裂带为火山喷发的主要通道，弧前盆地生成于弧沟间隙部位。

The island arc has a large antiform structure , the Yamansu fault belt is a main conduit for volcanic eruption , and the forearc basin was formed in an arc-trench gap .

弧前盆地发育多套储盖组合，但不稳定的构造活动易导致储集层和盖层在强烈变形区连续性差。

There are several sets of favorable reservoir and seal assemblages in fore-arc basin , but unstable tectonic activity easily lead to poor continuity of reservoir and seal in the strongly deformed area .

经过初步的侵位机制分析，可知这套火山岩经历了海沟增生楔、弧前盆地基底，并接受了盐边群碎屑岩的沉积。

The primitive study on the emplacement mechanism suggests that the volcanic rocks had underwent the stages of the trench accretion and the basement of forearc basin , which received the elastics of the Yanbian Group .

盐边群碎屑岩碎屑骨架颗粒统计分析结果和砂岩常量元素构造环境判断图解显示，它们所处的构造环境为活动大陆边缘，初步判定它们的原型盆地为弧前盆地。

Triangular diagram of the sandstone clastic compositions and the relationship diagram of major element suggest that the proto basin of the clastic rock of the Yanbian Group was a forearc basin , which was in an active continental margin .

赞岐岩的形成与菲律宾海板块年轻的热的岩石圈俯冲和四国盆地的张开有关，产于岛弧的弧前或弧后盆地环境。赞岐岩不只代表火山岩，也包括侵入岩。

The Setouchi sanukite is located in fore - or back-arc basins , and originated in subduction of the young and hot Philippine Sea plate and pull-apart of the Shikoku basin .

因为蛇绿岩形成环境具有多样性，既可以形成于大洋，也可以形成于洋中脊、弧后盆地、弧前盆地、岛弧、被动大陆边缘或小洋盆等。

Because ophiolite is formed in the environment with diversity , it is not only ocean but also mid oceanic ridges , post arc basin , fore arc basin , island arc , passive continental margin or micro ocean etc.

弧后盆地油气藏的保存条件较弧前盆地好，但一些弧后盆地晚期可能遭受局部构造挤压或基地隆升，导致原有油气藏中油气的逸散或再分布。

Preservation condition of reservoirs in back-arc basin is better than fore-arc basin , however , oil and gas in reservoirs may effuse or redistribute in some back-arc basin because of tectonic compression or uplift of base in later stage . 4 .