Reappraisal of hydrocarbon biomarkers in Archean rocks
Reappraisal of hydrocarbon biomarkers in Archean rocks
复制标题
DOI：
10.1073/pnas.1419563112
复制
发表时间：
2015-05-12
影响因子：
11.1
通讯作者：
Summons, Roger E.
中科院分区：
文献类型：
--
作者：
French, Katherine L.;Hallmann, Christian;Summons, Roger E.
在太古代岩石中发现的藿烷和甾烷已被作为支持含氧光合作用和真核生物早期兴起的关键证据，但这些碳氢化合物生物标志物的同源性存在争议。为了解决这一争论，我们对澳大利亚皮尔巴拉克拉通的新岩心进行了多实验室研究，这些岩心是使用前所未有的碳氢化合物清洁协议进行钻探和取样的。这些新岩心的岩石提取物和加氢热解产物中的藿烷和甾烷通常等于或低于我们的飞克检测限，但当它们可检测到时，它们含有总藿烷（
Hopanes and steranes found in Archean rocks have been presented as key evidence supporting the early rise of oxygenic photosynthesis and eukaryotes, but the syngeneity of these hydrocarbon biomarkers is controversial. To resolve this debate, we performed a multilaboratory study of new cores from the Pilbara Craton, Australia, that were drilled and sampled using unprecedented hydrocarbon-clean protocols. Hopanes and steranes in rock extracts and hydropyrolysates from these new cores were typically at or below our femtogram detection limit, but when they were detectable, they had total hopane (