ENDOGENOUS PRODUCTION, EXOGENOUS DELIVERY AND IMPACT-SHOCK SYNTHESIS OF ORGANIC-MOLECULES - AN INVENTORY FOR THE ORIGINS OF LIFE

被引：986

作者：

CHYBA, C ^{[1
]}

SAGAN, C ^{[1
]}

机构：

[1] CORNELL UNIV,PLANETARY STUDIES LAB,ITHACA,NY 14853

来源：

NATURE | 1992年 / 355卷 / 6356期

关键词：

D O I：

10.1038/355125a0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Sources of organic molecules on the early Earth divide into three categories: delivery by extraterrestrial objects; organic synthesis driven by impact shocks; and organic synthesis by other energy sources (such as ultraviolet light or electrical discharges). Estimates of these sources for plausible end-member oxidation states of the early terrestrial atmosphere suggest that the heavy bombardment before 3.5 Gyr ago either produced or delivered quantities of organics comparable to those produced by other energy sources.

引用

页码：125 / 132

页数：8

共 90 条

[1] MARS AND EARTH - ORIGIN AND ABUNDANCE OF VOLATILES [J].