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引言 最近,克洛根的研究由于与石油成因有关而迅速发展起来。原先所谓“克洛根”是指苏格兰油母页岩中所含的沥青,目前则指广泛分散在现代沉积物或古代沉积岩中的、常温常压下不溶于有机溶剂的有机物(不包括腐植酸)。然而,正如田口一雄(1975)所说,由于研究者对于克洛根所下的定义略为不同,因而使其争论复杂化。因此,本文首先表明,笔者所指的是“固结岩石”中的不溶有机物,即所谓化石克洛根。
INTRODUCTION Recently, Krogen’s research developed rapidly due to the oil genesis. The original so-called “Krogen” refers to the bitumen contained in the oil shale in Scotland. At present, it refers to organic matter (excluding humic acid) that is widely dispersed in modern sediments or ancient sedimentary rocks and is insoluble in organic solvents at normal temperature and pressure. However, as Taguchi Taguchi (1975) argues, the controversy is complicated by the somewhat different researchers’ definition of Krogen. Therefore, this article first shows that the author refers to the “fixed rock” in the insoluble organic matter, the so-called fossil Clogaton.