Abstract

Structure, morphology, and composition of the gas for natural gas hydrates sampled in the Kedr-1 mud volcano (Lake Baikal) are studied. It is shown that all these hydrates have cubic structure II, and the hydrate‐bound gas contains about 14% of ethane (the rest is methane). One of the samples is a porous monolithic hydrate layer sandwiched between the layers of hydrate granules. The hydrate has similar structures and compositions in the layer and in the granules. As far as we know, no such morphology features of natural hydrates have been reported so far. Possible mechanisms underlying the formation of such objects are discussed.

中文翻译：

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在 KEDR-1 泥火山（贝加尔湖）中采样的天然气水合物的结构、形态和组成

摘要

研究了在 Kedr-1 泥火山（贝加尔湖）采样的天然气水合物气体的结构、形态和组成。结果表明，所有这些水合物都具有立方结构II，并且水合物结合气体中含有约14%的乙烷（其余为甲烷）。其中一个样品是夹在水合物颗粒层之间的多孔整体水合物层。水合物在层和颗粒中具有相似的结构和组成。据我们所知，目前还没有关于天然水合物的这种形态特征的报道。讨论了这些物体形成的可能机制。