Re-Os isotope system in organic-rich samples for dating and …
网页2023年3月1日 · In the last three decades, significant progress has been made in the investigation of rhenium‑osmium (Re-Os) isotopic system in organic-rich samples. The Re-Os geochronometer can provide precise absolute depositional ages of organic-rich sediments (ORS) and information on the age of the generation, migration, and charge of …
金属硫化物Re-Os同位素定年技术进展
网页2022年6月4日 · 本文对近年来金属硫化物Re-Os同位素分析技术的研究发展现状以及存在的问题进行系统评述，包括野外工作和室内金属硫化物矿物精确识别和挑选、样品的分解、分离富集技术到仪器测定、参考标样选择等，并对化学处理过程中如何提高试剂纯度，避免器皿 ...
Recent progress on the research of Re–Os geochronology and Re–Os …
网页2020年12月1日 · Re–Os geochronometer has been used in the dating of generation-accumulation, thermal cracking, and thermochemical sulfate reduction of crude oil and the oil-source correlation of petroleum systems in recent years. Re and Os concentrations are higher in the asphaltene fraction of crude oil and the …
Re-Os systematics and chronology of graphite - ScienceDirect
网页2022年4月15日 · Re-Os graphite geochronology likely has wide applications in ore-deposit and metamorphic geology with the potential to reshape our understanding of carbon cycling in the crust-mantle system, and for graphite exploration initiatives that are critical for a global transition to a green economy.
Rhenium-osmium dating method - SpringerLink
网页The rhenium-osmium (Re-Os) dating technique is uniquely able to date directly sulfide minerals and some natural metals because both elements have strongly siderophile and chalcophile characteristics. Osmium has two isotopes that are variable in nature .
THE Re-Os ISOTOPE SYSTEM IN COSMOCHEMISTRY AND HIGH …
网页The Re-Os isotope sytem, based on the long-lived β − transition of 187 Re to 187 Os, has matured to wide use in cosmochemistry and high-temperature geochemistry. The siderophilic/chalcophilic behavior of Re and Os is different from that of the elements that comprise most other long-lived radiogenic isotope systems.
Rhenium–Osmium Geochronology: Sulfides, Shales, Oils, and …
网页2014年1月1日 · Re–Os geochronology can be used to date earth materials (e.g., sulfides, shales, oils) previously undatable by other isotopic methods. Of pivotal importance, these materials are directly linked to natural resources, both minerals and hydrocarbon, critical to human civilization.
硫化物Re-Os同位素定年分析方法及其在矿床年代学中的应用：研 …
网页In this article it reviews the characteristics of sulfides Re-Os isotope system, introduces separation and purification methods, and mass spectrometry analysis techniques, and systematically discusses possible influencing factors of sulfide Re-Os dating.
Re–Os isotope and platinum-group element geochemistry of
网页2013年11月19日 · Re–Os isotope systematics offer a powerful tool to study Cu–Ni–(PGE) sulfide mineralization because of the chalcophile nature of Re and Os and provide useful information for the understanding of ore-forming process and the role of crustal contamination on sulfide saturation (Lambert et al. 1998, …
Rhenium–osmium dating - Wikipedia
网页Rhenium–osmium dating is a form of radiometric dating based on the beta decay of the isotope 187 Re to 187 Os. This normally occurs with a half-life of 41.6 × 10 9 y, [1] but studies using fully ionised 187 Re atoms have found that this can decrease to only 33 y. [2] .