High-Temperature Processes: Is it Time for Lithium Isotopes?

被引：20
作者：
Marschall, Horst R. [1 ,2 ,3 ]
Tang, Ming [4 ,5 ]
机构：
[1] Goethe Univ, Inst Geowissensch, Altenhoferallee 1, D-60438 Frankfurt, Germany
[2] Goethe Univ, FIERCE, Altenhoferallee 1, D-60438 Frankfurt, Germany
[3] Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02543 USA
[4] Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China
[5] Rice Univ, Dept Earth Environm & Planetary Sci, 6100 Main St, Houston, TX 77005 USA
来源：
ELEMENTS | 2020年 / 16卷 / 04期
基金：
美国国家科学基金会;
关键词：
lithium isotopes; diffusion; geochronometry; timescales; isotope fractionation; OROGENIC ECLOGITES; LI DIFFUSION; FLUID-FLOW; FRACTIONATION; BASALT; MANTLE; CYCLE; CRUST;
D O I：
10.2138/gselements.16.4.247
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
The field of high-temperature Li isotope geochemistry has been rattled by major paradigm changes. The idea that Li isotopes could be used to trace the sources of fluids, rocks, and magmas had to be largely abandoned, because Li diffusion causes its isotopes to fractionate at metamorphic and magmatic temperatures. However, diffusive fractionation of Li isotopes can be used to determine timescales of geologic processes using arrested diffusion profiles. High diffusivity and strong kinetic isotope fractionation favors Li isotopes as a tool to constrain the durations of fast processes in the crust and mantle, where other geochronometers fall short. Time may be the parameter that high-temperature Li isotope studies will be able to shed much light on.
引用
收藏
页码：247 / 252
页数：6
相关论文
共 30 条
[1]   ISOTOPE EFFECT IN THE ELECTROMIGRATION OF LITHIUM IONS IN AGAR-AGAR GEL [J].
ARNIKAR, HJ .
JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1959, 11 (03) :248-251
[2]   Instantaneous rock transformations in the deep crust driven by reactive fluid flow [J].
Beinlich, A. ;
John, T. ;
Vrijmoed, J. C. ;
Tominaga, M. ;
Magna, T. ;
Podladchikov, Y. Y. .
NATURE GEOSCIENCE, 2020, 13 (04) :307-+
[3]   Diffusion in solid silicates: A tool to track timescales of processes comes of age [J].
Chakraborty, Sumit .
ANNUAL REVIEW OF EARTH AND PLANETARY SCIENCES, 2008, 36 :153-190
[4]   VARIATION OF LITHIUM ISOTOPE COMPOSITION IN THE MARINE-ENVIRONMENT - A PRELIMINARY-REPORT [J].
CHAN, LH ;
EDMOND, JM .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1988, 52 (06) :1711-1717
[5]   Lithium isotopic composition of Central American volcanic arc lavas: implications for modification of subarc mantle by slab-derived fluids: correction [J].
Chan, LH ;
Leeman, WP ;
You, CF .
CHEMICAL GEOLOGY, 2002, 182 (2-4) :293-300
[6]   Lithium and lithium isotope profiles through the upper oceanic crust: a study of seawater-basalt exchange at ODP Sites 504B and 896A [J].
Chan, LH ;
Alt, JC ;
Teagle, DAH .
EARTH AND PLANETARY SCIENCE LETTERS, 2002, 201 (01) :187-201
[7]   LITHIUM ISOTOPIC COMPOSITION OF SUBMARINE BASALTS - IMPLICATIONS FOR THE LITHIUM CYCLE IN THE OCEANS [J].
CHAN, LH ;
EDMOND, JM ;
THOMPSON, G ;
GILLIS, K .
EARTH AND PLANETARY SCIENCE LETTERS, 1992, 108 (1-3) :151-160
[8]   Lithium concentration gradients in feldspar and quartz record the final minutes of magma ascent in an explosive supereruption [J].
Charlier, B. L. A. ;
Morgan, D. J. ;
Wilson, C. J. N. ;
Wooden, J. L. ;
Allan, A. S. R. ;
Baker, J. A. .
EARTH AND PLANETARY SCIENCE LETTERS, 2012, 319 :218-227
[9]   Li diffusion in zircon [J].
Cherniak, D. J. ;
Watson, E. B. .
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY, 2010, 160 (03) :383-390
[10]   Rates of hydrothermal cooling of new oceanic upper crust derived from lithium-geospeedometry [J].
Coogan, LA ;
Kasemann, SA ;
Chakraborty, S .
EARTH AND PLANETARY SCIENCE LETTERS, 2005, 240 (02) :415-424
123