Submarine hydrothermal vent systems: the relevance of dynamic systems in chemical evolution and prebiotic chemistry experiments

IF 1.7 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS
Saúl A. Villafañe-Barajas, M. Colín-García
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引用次数: 2

Abstract

Since their discovery, submarine hydrothermal vent systems have been pointed out as important places where chemical evolution on Earth could have occurred; and their role in the process has been highlighted. Similarly, some hypotheses have considered these systems in origin of life scenarios. In this way, many experiments have been developed, and the knowledge about these systems has increased. Due to their complexity, many experimental simulations have only included a few of the geochemical variables present in these environments, pressure and temperature. Other main variables have hardly been included, such as mineralogy, thermal and pH gradients, dissolved ions and/or redox reactions. As it has been understood, the dynamism and heterogeneity of these environments are huge, and it comprises different scales, from single vents to full hydrothermal fields. However, the vast majority of experiments focus on a specific part of these systems and do not include salinity, mineralogy and pH gradients. For this reason, in this paper, we pointed out some considerations about how this dynamism can be interpreted, and included in some models, as well their importance in prebiotic chemistry experiments and their extrapolations regarding the hypothesis about the origins of life.
海底热液喷口系统:动力学系统在化学进化和益生元化学实验中的相关性
自发现以来,海底热液喷口系统一直被认为是地球上可能发生化学进化的重要场所;并强调了他们在这一进程中的作用。类似地,一些假设在生命起源场景中考虑了这些系统。通过这种方式,已经开发了许多实验,并且对这些系统的了解也有所增加。由于其复杂性,许多实验模拟只包括这些环境中存在的几个地球化学变量,即压力和温度。其他主要变量几乎没有包括在内,如矿物学、热梯度和pH梯度、溶解离子和/或氧化还原反应。正如人们所理解的,这些环境的动态性和异质性是巨大的,它包括不同的规模,从单个喷口到全热液场。然而,绝大多数实验都集中在这些系统的特定部分,不包括盐度、矿物学和pH梯度。因此,在本文中,我们指出了一些关于如何解释这种动态性的考虑,并将其纳入一些模型中,以及它们在益生元化学实验中的重要性,以及它们对生命起源假说的推断。
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来源期刊
International Journal of Astrobiology
International Journal of Astrobiology 地学天文-地球科学综合
CiteScore
3.70
自引率
11.80%
发文量
45
审稿时长
>12 weeks
期刊介绍: International Journal of Astrobiology is the peer-reviewed forum for practitioners in this exciting interdisciplinary field. Coverage includes cosmic prebiotic chemistry, planetary evolution, the search for planetary systems and habitable zones, extremophile biology and experimental simulation of extraterrestrial environments, Mars as an abode of life, life detection in our solar system and beyond, the search for extraterrestrial intelligence, the history of the science of astrobiology, as well as societal and educational aspects of astrobiology. Occasionally an issue of the journal is devoted to the keynote plenary research papers from an international meeting. A notable feature of the journal is the global distribution of its authors.
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