生物成因的

However,studies on marine ascidian skeletons have revealed that ACC as a transient precursor to crystalline CaCO3 can stably exist for long time in organisms,and the stable ACC is usually membrane-embedded.

但由海鞘类动物的研究表明，ACC可作为碳酸钙晶体矿物的前驱体在生物体内稳定存在，并且这些生物成因的ACC常常是由膜包裹着的。

However, studies on marine ascidian skeletons have revealed that ACC as a transient precursor to crystalline CaCO3 can stably exist for long time in organisms, and the stable ACC is usually membraneembedded.

但由海鞘类动物的研究表明，ACC可作为碳酸钙晶体矿物的前驱体在生物体内稳定存在，并且这些生物成因的ACC常常是由膜包裹着的。

The upper layer, with homogeneous composition, is mainly composed of intact phosphatic foraminifer fossils and nannofossils as well as abiotic carbonate fluorapatites, representing the biologic and autogenic origin. However, the lower layer, with visible metasomatic texture and relatively high Si, Al, K and Fe, is notably different from the upper one, and seems to have been formed mainly by replacement of carbonates.

上层磷酸盐由大量形态结构清楚的磷酸质有孔虫和超微化石以及非生物碳氟磷灰石组成，成分均一，杂质少，表现出生物成因和原生白沉积特点；下层磷酸盐变化复杂，具有特征的交代结构，混杂较高的Si、Al、K、Fe成分，显示以磷酸盐交代碳酸盐成因为主。

But the biogenic sulfur isotopic fractionation process was complicated by many factors.

但生物成因的硫同位素分馏过程复杂，受诸多因素的限制。

Four main formations of loop bedding in Jiyang sub-basin were upper layers fall down in the process of earthquake, tautening distortion due to earthquake, the frication of earthquake-related surface of fault and the effect of redox and diffuse other formations of loop bedding comprise the effect of earthquake wave, the effect coming from circumrotate of globosity rotation, snowball function, cementation intermittent, the effect of biology, and so on.

综合分析认为震动塌落、震动拉伸变形、地震断裂面的摩擦作用、氧化还原反应和扩散作用是环状层理的主要成因，前三种成因的环状层理往往与其他震成构造伴生，可作为震积岩的良好标志。环状层理的其他成因还包括：地震波传播方式的影响、地球自转产生的涡旋的影响、"滚雪球"效应、间歇胶结作用以及生物成因等。

Analysis of their morphologies and features leads to the conclusi on that these structures might have been in connection with metazoan activity, bu t the possibility of their abiotic origin can not be ruled out.

通过对上述构造形态和特征分析，这些构造可能与后生动物的活动有关，但也不排除它们是非生物成因的可能。

It is another biogenic gemstone material and is formed by calcium skeleton of a coral insect branch-shaped along with very small thalassic animal population accretion.

是生物成因的另一种宝石原料。它是珊瑚虫的树枝状钙制骨架随着极细小的海生动物群体增生而形成。

Four main formations of loop bedding in Jiyang sub-basin were upper layers fall down in the process of earthquake, tautening distortion due to earthquake, the frication of earthquake-related surface of fault and the effect of redox and diffuse other formations of loop bedding comprise the effect of earthquake wave, the effect coming from circumrotate of globosity rotation, snowball function, cementation intermittent, the effect of biology, and so on.

综合分析认为震动塌落、震动拉伸变形、地震断裂面的摩擦作用、氧化还原反应和扩散作用是环状层理的主要成因，前三种成因的环状层理往往与其他震成构造伴生，可作为震积岩的良好标志。环状层理的其他成因还包括：地震波传播方式的影响、地球自转产生的涡旋的影响、&滚雪球&效应、间歇胶结作用以及生物成因等。

Ana lyses of the main shale gas basins in America show that gas shale reservoirs can be classified into thermal genetic type.

按天然气成因将页岩气藏分为热成因型、生物成因型和混合成因型，分析了美国具有代表性的典型气藏。

Furthermore, biogenic minerals in geological environments can be used as biosignatures, which help to retrieve the origin and evolution of life on Earth and other planets.

此外，在地质环境中生物成因的矿物还可以作为一种生物信号，用来重建地球和其他行星的起源和演化。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。