Dating of pore waters with 129I:: Relevance for the origin of marine gas hydrates

被引：145

作者：

Fehn, U

Snyder, G

Egeberg, PK

机构：

[1] Univ Rochester, Dept Earth & Environm Sci, Rochester, NY 14627 USA

[2] Agder Coll, Dept Chem, N-4604 Kristiansand, Norway

来源：

SCIENCE | 2000年 / 289卷 / 5488期

关键词：

D O I：

10.1126/science.289.5488.2332

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：

Pore waters associated with gas hydrates at Blake Ridge in the Atlantic Ocean were dated by measuring their iodine-129/iodine-129/iodine ratios. Samples collected from sediments with ages between 1.8 and 6 million years ago consistently yield ages around 55 million years ago. These ages, together with the strong iodine enrichment observed in the pore waters, suggest that the origin of iodine is related to organic material of early Tertiary age, which probably is also the source of the methane in the gas hydrates at this location.

引用

页码：2332 / 2335

页数：4

共 24 条

[1]

[Anonymous], 2000, Proc. Ocean Drill. Prog, DOI [10.2973/odp.proc.sr.164.206.2000, DOI 10.2973/0DP.PR0C.SR.164.206.2000]

[2]

[Anonymous], AAPG BULL

[3]

Dickens GR, 1997, GEOLOGY, V25, P259, DOI 10.1130/0091-7613(1997)025<0259:ABOGIT>2.3.CO

[4]

[5] Thermodynamic and pore water halogen constraints on gas hydrate distribution at ODP Site 997 (Blake Ridge) [J].