首页|Origin of the Earth:A proposal of new model called ABEL

Origin of the Earth:A proposal of new model called ABEL

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
  • 维普
The Earth was born as a dry planet without atmosphere and ocean components at 4.56 Ga, with sub-sequent secondary accretion of bio-elements, such as carbon (C), hydrogen (H), oxygen (O), and nitrogen (N) which peaked at 4.37-4.20 Ga. This two-step formation model of the Earth we refer to as the advent of bio-elements model (ABEL Model) and the event of the advent of bio-elements (water component) as ABEL Bombardment. It is clear that the solid Earth originated from enstatite chondrite-like dry material based on the similarity in oxygen isotopic composition and among other isotopes. On the other hand, Earth’s water derives primarily from carbonaceous chondrite material based on the hydrogen isotopic ratio. We present our ABEL model to explain this enigma between solid Earth and water, as well as secondary accretion of oxidizing bio-elements, which became a precursor to initiate metabolism to emerge life on a highly reductive planet. If ABEL Bombardment had not occurred, life never would have emerged on the Earth. Therefore, ABEL Bombardment is one of the most important events for this planet to evolve into a habitable planet. The chronology of ABEL Bombardment is informed through previous researches of the late heavy bombardment and the late veneer model. ABEL Bombardment is considered to have occurred during 4.37-4.20 Ga, which is the concept to redefine the standard late heavy bombardment and the late veneer models. Also, ABEL Bombardment is the trigger of the transition from stagnant lid tectonics to plate tectonics on this planet because of the injection of volatiles into the initial dry Earth.

Origin of Earth and lifeAdvent of bio-elements (ABEL)Origin of water on the EarthABEL BombardmentHabitable Trinity planetInitiation of plate tectonics

Shigenori Maruyama、Toshikazu Ebisuzaki

展开 >

Earth-Life Science Institute, Tokyo Institute of Technology, 2-12-1 IE-16 0okayama, Merugo-ku, Tokyo, 152-8550, Japan

RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan

This research was supported by Grant-in-Aid for Scientific Research on Innovative AreasThis research was supported by Grant-in-Aid for Scientific Research on Innovative Areas

2610600226106006

2017

地学前缘(英文版)
中国地质大学（北京） 北京大学

地学前缘(英文版)

CSTPCDCSCDSCI
影响因子：0.576
ISSN：1674-9871
年,卷(期)：2017.8(2)
  • 15
  • 4