锆石中的宇宙成因氪及其在地球表面应用的潜力

IF 2.7 Q2 GEOCHEMISTRY & GEOPHYSICS

Geochronology Pub Date : 2022-01-25 DOI:10.5194/gchron-4-65-2022

T. Dunai, S. Binnie, A. Gerdes

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引用次数: 1

摘要

摘要对地表岩石和沉积物中产生的宇宙成因核素的分析是评估形成地球表面的过程速率和事件时间的宝贵工具。所使用的各种核素都有特定的优点和局限性，这取决于它们有用的时间范围、生产它们的材料类型，尤其是分析工作的可行性。展望在地球表面科学中的新应用，我们开发了原位生成的地球宇宙成因氪(Krit)作为一种新工具，其动机是六种稳定同位素和一种放射性同位素(81Kr，半衰期229 kyr)和一种极耐风化的目标矿物(锆石)的可用性。我们提供了一个原理证明，即地球表面温度可以被量化并应用于地表过程。

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In situ-produced cosmogenic krypton in zircon and its potential for Earth surface applications

Abstract. Analysis of cosmogenic nuclides produced in surface rocks and sediments is a valuable tool for assessing the rates of processes and the timing of events that shaped the Earth surface. The various nuclides that are used have specific advantages and limitations that depend on the time range over which they are useful, the type of material they are produced in and not least the feasibility of the analytical effort. Anticipating novel applications in Earth surface sciences, we develop in situ-produced terrestrial cosmogenic krypton (Krit) as a new tool, the motivation being the availability of six stable and one radioactive isotope (81Kr, half-life 229 kyr) and of an extremely weathering-resistant target mineral (zircon). We provide proof of principle that terrestrial Krit can be quantified and used to unravel Earth surface processes.

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来源期刊

Geochronology Earth and Planetary Sciences-Paleontology

CiteScore

6.60

自引率

0.00%

发文量

审稿时长

19 weeks