density-gradient sedimentation是什么意思

网络释义

用法例句

Experimental research indicated that the largest value on ratio of landform to deposit slope is four; predicting deposit model of viscous debris flow is a= 7.

泥石流堆积坡度主要受流路地形坡度和流体性质的影响，所以必须考虑同级水系流路地形坡度才有可比性。

The past twenty years have witnessed great development in the study of volcanic sedimentation, both theoretical and methodological.

火山沈积作用是介于火山学和沈积学之间的边缘研究领域。

The upper slope was characterized by all kinds of sliding sediments and lower slope by all kinds of debris flow sediments.

其中，上斜坡以各种规模的滑动沈积为特色，下料坡以不同性质的碎屑流沈积为特徵。

The thin-beded siliceous-rocks include chert and depositional quartz with textures of oolite and pebble.

矽质岩包括燧石和沈积石英岩，呈薄层状产出，沈积石英岩具鲕状、砾状结构。

These internal-tide deposits possessed five types of vertical successions and formed rhythmic deposit combinations with cyclicity in the vertical section.

它们具有5种垂向沈积层序，在剖面上常形成多旋回韵律性沈积组合。

According to petrology, biological assemblage and structural features of carbonate rocks, the sedimentary environments of formations of the carbonates in Yichang area are reconstructed.

根据本区寒武系的岩石学特徵、生物组合特徵和沈积构造特徵重建了各组段的沈积坏境。

Dolostone is the main rock type of the Cambrian in this area.

从下寒武统石龙洞组开始都是白云岩沈积。

An ultrathin Pd film is synthesized on semiconductor support by photocatalytic method.

由光催化沈积可在半导体载体上制备超薄钯膜。

Calcareous deposits are usually formed on cathodically protected steel surface in sea water, and their importance in reducing the current requirement to maintain adeguate protection is generally recognized.

钙质沈积通常会在阴极保护的海水结构物上沈淀，而减少要达保护电位所需的电流密度。

The reservoir physical property were primarily dominated by sedimentary facies、corrosion and dolomization.

储集物性主要受沈积相带及溶蚀和白云岩化作用的控制。

Pyroclastic rocks are a kind of transitional and complex rocks between lavas and sedimentary rocks.

火山碎屑岩是介于溶岩和沈积岩之间的过渡类型岩石，岩类复杂。

The formation of polygonal fault is associated with early compaction of sediments and fluid expulsion.

它的形成与沈积物的早期压实作用和流体排出作用有关。

Sedimentary, tectonics and manganese source was studied to determine the genesis of Heqin-type high grade manganese deposit.

从沈积学、构造学和锰质来源三个方面研究了鹤庆锰矿。

The main kinds of rocks include carbonate rocks, tuffite, siliceous rocks and quartz sand-stone.

主要岩石类型包括碳酸盐岩、沈积凝灰岩、矽质岩和石英砂岩。

Polygonal fault is a type of non-tectonic fault distributing in deepwater fine-grained sediments.

多边形断层为一类非构造断层，主要分布于深水环境下的细粒沈积物中。

Under same conditions the deposition rate increased with the tube length and decreased with the flow velocity.

结果发现，在相同条件下，沈积率随管长增加而增大；随流体速度增加而减小。

The mentioned volcanic activity in Yangzhuang Formation is expected to propel the study of the Proterozoic chronology and tectono-sedimentary evolution of North China.

杨庄期火山活动可能提供华北地区中元古代年代地层学和构造─沈积演化研究的新证据。

After burial and during the decay of the body, the soot was deposited on the inside of the ribs.

等到人死后埋入地下，黑灰就会在尸身腐烂的过程中沈积在肋骨内侧。

Tuffite is formed by the combination of volcanic ashes and carbonate mud.

沈积凝灰岩主要为中远源的火山灰与碳酸盐灰泥混合而成，含石英团块，显斑点构造。