太古宙的生命起源信息及研究评述

Progresses and Reviews on the Archean Life

太古宙生命起源研究是地学领域争议激烈的热点研究方向,已报道发现太古宙生命遗迹的地区集中在格陵兰岛istu绿岩带,澳大利亚西部Pilbara克拉通和南非Kaapvaal克拉通等三处。判别太古宙岩石中关于生命存在指示信息的可靠性是探讨生命起源的首要内容,当前微组构分析技术、生物标志物测试以及古生物学形态类比法的融合大大推动了对太古宙生命鉴别研究的深度,但现有认识或推论均带有不同程度的间接性和不确定性,如δ13C指标的有效性、形态类比法的局限性、化石的微构造等诸多科学问题依然存在争论。今后多学科思想和技术的交叉融合是研究太古宙生命起源领域的发展趋势,在研究对象上要重视对化石母岩的深入研究。

The ancient fossils discovered from the Archean period have generated much controversy about their authenticity and antiquity, this is a hotspot issue in the studying of geological field. The Arehean life fossils mainly occur in the Istu Greenstone Belt in Greenland, the Pilbara eraton in western Australia and Kaapvaal craton in South Africa. With the development of the testing technique, combining the paleontology, some new detection methods are applied to identify the morphological features of mierofossil and to indicate the origin of early life, especially the mierofabric technique and biomarker testing, which can provide more credible evidence to distinguish the biogenie or abiotie. The controversy about Archean life is still a serious seientifie problem, the ~13C validity, the morphological analogy and the mierostrueture of fossil are greatly disputed. The disciplinary cross and technique combining is a feasible way to boost the studying of the Arehean Life, and stress should be laid on the parent rocks.