查询词典 basalt-porphyry

Plate tectonics; ocean ridge; magmatism; ocean crust; lithosphere; Benioff Zone; Precambrian; seafloor magnetic lineations; mantle; basalt; transform fault; metamorphism; metamorphic facies; Strontium isotope; sulphide ore

关键词：板块构造；洋脊；岩浆作用；洋底壳；岩石圈；贝尼奥夫带；前寒武纪；海底磁性线壮构造；地幔；玄武岩；转换断层；变质作用；变质相；锶同位素；硫化矿

Tectonic setting is neither important nor unique cause for controlling the basalt magma ingredients, though it can affect them.

摘 要：大地构造环境对玄武质岩浆成分有影响，但却不是主要的，更不是唯一的因素。

Up to date the reserves discovered at shallow targ ets has exceeded 70% of total in Bohai Sea.Neotectonismis chara cterized by:(1)different Q and N center of subsidence,and angular unconformity b etween Q and N;(2)basalt effusion and magma activities frequently;(3)regular dis tribution of earthquake center;(4)intensive later faults (15-2Ma)forming multit ude anticiline in Nm-Ng formations.

目前浅层的油气储量占总储量的70%以上，这是由于海域新构造运动控制了晚期成藏，表现为：第四纪沉降中心与Nm晚期沉降中心不吻合，使得Q与N之间地层呈角度不整合；玄武岩喷发及岩浆活动频繁；沿渤南及郯庐断裂带天然地震震中有规律分布，晚期(15～2Ma)断裂极其发育，在Nm—Ng组地层内形成众多的背斜圈闭。

The petrological study and studies in element and isotopic geochemistry indicate that the pluton belongs to high-potassium calc-alkaline I-type granite, whose magma came from basic basalt in the thicken crust bottom by partial melting, and are of syn-collisional features. The pluton provides a direct petrological evidence of the plate collision and amalgalation.

岩石学、元素和同位素地球化学研究表明，岩体属于高钾钙碱性Ⅰ型花岗岩，岩浆来源于加厚地壳底部基性玄武质岩石的部分熔融作用，属同碰撞型花岗岩，是板块碰撞拼合的直接岩浆岩证据。

The redox state of basalt magmas is between those of oxygen buffers FMQ and HM.

玄武岩浆喷发前的氧化状态处于FMQ和HM缓冲剂之间。

The helium isotope results of nodules in C-CZone, eclogite in Dabie-Sulu region and mantle xenoliths and xenocrysts in Cenozoic basalt ineastern China were reported in this thesis.

本文重点介绍了C-C区海底多金属结核、大别山榴辉岩和中国东部新生代玄武岩中幔源包体的氦同位素研究成果。

Thee seismic area is covered with the Basalt at Post-Tertiary Period.

震区被晚第三纪玄武岩覆盖，地面未发现第四纪活动断裂。

The results show that the main gold ore bodies were produced near the interruption of sedimentation between Maokou Formation and Emeishan Basalt, which is a characteristic ore-forming combination composed of ore source bed, fluid passageway and ore-hosting space.

研究结果表明，泥堡矿床最主要的金矿体产于茅口组与峨眉山玄武岩组之间的沉积间断面附近，是一个集矿源层、流体通道和容矿部位于一体的极具特色的成矿组合。

The content of available N in soil layer of 0-20cm in rubber plantation was the highest in shale and that of available N in soil layer of 21-40 and 41-60cm were the highest in basalt.

胶园0~20cm土壤速效氮含量在页岩中最高，21~40、41~60cm土壤速效氮含量在玄武岩中最高。

Distribution scope of the Emeishan basalt is quite broad, and the most main rock type is low-Ti basalts and high-Ti basalts, and has the few picritic basalts, picrites and meymechites.

峨眉山玄武岩分布范围比较广，最主要的岩石类型是低钛玄武岩和高钛玄武岩，并有少量的苦橄质玄武岩、苦橄岩和麦美奇岩。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。