DOI: 10.1038/ngeo1923
论文题名: Readily available phosphate from minerals in early aqueous environments on Mars
作者: Adcock C.T. ; Hausrath E.M. ; Forster P.M.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2013
卷: 6, 期: 10 起始页码: 824
结束页码: 827
语种: 英语
Scopus关键词: biochemistry
; concentration (composition)
; dissolution
; Mars
; mineral
; origin of life
; phosphate
; reaction rate
; water-rock interaction
英文摘要: If the chemistry essential to life was present in water-containing environments on Mars, the processes that led to life on Earth may have also occurred on the red planet. Phosphate is one of the chemical nutrients thought to be essential for life and is also considered critical to reactions that may have led to life on Earth. However, low prebiotic availability of phosphate may have been a complicating factor in terrestrial abiogenesis, suggesting that a similar hurdle may have confronted the development of life on Mars. Phosphate available for biological reactions can be introduced into aqueous environments through dissolution of primary phosphate minerals during water-rock interactions, but little is known about the dissolution of the dominant phosphate minerals found in martian meteorites and presumably on Mars. Here we present dissolution rates, phosphate release rates and solubilities of phosphate minerals found in martian rocks as determined from laboratory measurements. Our experimental findings predict phosphate release rates during water-rock interactions on Mars that are as much as 45 times higher than on Earth and phosphate concentrations of early wet martian environments more than twice those of Earth. We suggest that available phosphate may have mitigated one of the hurdles to abiogenesis on Mars. © 2013 Macmillan Publishers Limited. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106696
Appears in Collections: 气候减缓与适应 科学计划与规划
There are no files associated with this item.
作者单位: Department of Geoscience, University of Nevada Las Vegas, 4505 S. Maryland Pkwy., Las Vegas, NV 89154, United States; Department of Chemistry, University of Nevada Las Vegas, 4505 S. Maryland Pkwy., Las Vegas, NV 89154, United States
Recommended Citation:
Adcock C.T.,Hausrath E.M.,Forster P.M.. Readily available phosphate from minerals in early aqueous environments on Mars[J]. Nature Geoscience,2013-01-01,6(10)