| 1. | Practices on bolt , mesh , anchor and beam support in coal drift under unstable roof condition of cataclastic rock mass 不稳定顶板煤巷锚网索梁支护实践
|
| 2. | Cataclastic texture which came from brittle deformation made the jadeite quality bed , but the mylonitic texture which resulted from ductile deformation made the jadeite quality good 在强大剪切应力和钠质流体的共同作用下,铬铁矿的淡化作用是形成绿色的主要原因。
|
| 3. | Three stages of deformation can be distinguished from the cataclastic superposition of matrices that infilled the microcracks in cataclastic rocks , and two phas es of paleotectonic stress field from the typical conjugated shear joints by stereograms illustrating 构造岩中胶结物和微裂隙充填脉反映了岩石碎裂变形的三次叠加。断裂变形带内发育两期典型的共轭剪节理,但区域分布各有特点,反映出断裂变形的空间演化。
|
| 4. | Zijingguan fault zone is characterized with cataclasite series of tectonic rocks and joints alongside the deformational zone , and sometimes with uniclinal flexure or folds . the intensity of deformation increases from the sides to the center of the fault in the section , which appears from joints to cataclastic rocks 紫荆关断裂带两主断裂变形带以碎裂岩系列构造岩和节理带组合为特征,局部出现挠曲和褶皱,由两盘至断裂中心变形强度增大,一般由节理带过渡为碎裂岩带。
|
| 5. | The fault controlled the magmatism and metallization relevant to the contact zone , and deformed successively and produced cataclastic rocks and two sets of joints ; the second stage was from late cretaceous to eocene . the fault zone deformed right - laterally under ne - sw striking transtention , and new joints zone was produced at the end of the two main faults because of local stress concentration . the fault produced inchoative cataclastic rocks , and two sets of typical joints in plutons ; the third stage of deformation was relatively faint and only a little of microcracks was produced and infilled with vei ns in the deformed rocks , which was during the himalayan movement 其后的继承性活动在断裂带内形成碎裂程度最强达到碎裂岩的碎裂岩系列构造岩,变形带两侧发育两组典型的共轭剪节理;第二次在晚白垩世?始新世,断裂在北东?南西向近水平挤压作用下右行张扭性活动,断裂带两主断裂在斜列重叠的端部由于局部应力集中进一步扩展形成节理带,而断裂在岩体区也发育两组典型的共轭剪节理,断裂内形成初碎裂岩为主的构造岩;第三次是喜山期以西侧抬升、东侧下降的强烈升降为主的活动,在基岩中,主断层两侧围岩出现微破裂。
|
| 6. | It is further indicated by the fusion of various geo - factors that the major targets include gold - bearing limonitic cataclastic rock in ningwei domain , auriferous quartz in nanhua mountain and xihua mountain domain , where the 50 - 85 strike mylonite and sulfur - bearing quartz - calcite veins of cataclastic rock is the prior ore - search targets 同时,通过多源地学因素的融合还显示,宁卫地区找金的主攻对象以含金褐铁矿化碎裂岩为主,南华山、西华山地区以脉型金矿为主,且重点应在50 - 85度方向糜棱岩、碎裂岩带中寻找含硫化物的石英-方解石脉。
|
| 7. | The cataclastic rocks appeared in the fault zone include structural lenticles , fault breccias , protocataclasite and cataclasite . the microscopical cataclastic deformation mechanisms involved are microcracking , frictional sliding and pressure - solution , but there might have had ductile deformation relating to dislocation sliding in feldspar and quartz of the plutons 断裂带内碎裂岩系列构造岩主要是碎裂化岩石(包括构造透镜体和构造角砾岩) 、初碎裂岩和碎裂岩,显微变形机制主要有破裂作用、摩擦滑动和压溶作用。
|
| 8. | The author suggests that the three lithosphere - scale faults , lancangjiang fault , jinshanjiang - ailaoshan fault and axis fault in the middle of the basin , are the main geological structures that control the formation of basin , magmatism and metallogenic congregate district . the anticline structure with an axis of triassic strata and the related fault system within the basin , and gonglang arch - shaped folding structure in the south of the basin are the geological structure controlling the formation of ore fields . junctions of two or more faults with different orientation , interlayer cataclastic structural zone and oxidation - reduction ( redox ) boundary were the favorable position for the formation of ore bodies 认为澜沧江断裂、金沙江-哀牢山断裂及盆地中轴断裂这三条岩石圈断裂是主要的控盆-控岩(岩浆岩)构造及矿集区尺度的控矿构造;盆地中以三叠系为轴的背斜构造及相关的断裂系统、盆地西南缘公郎弧形构造等是矿田尺度的控矿构造;多组断裂的交叉、层间破碎带及地层柱中的氧化还原界面是形成矿体的有利部位。
|