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DOI | 10.1073/pnas.2003907117 |
Identification of chondritic krypton and xenon in Yellowstone gases and the timing of terrestrial volatile accretion | |
Broadley, Michael W.1; Barry, Peter H.2; Bekaert, David V.1; Byrne, David J.1; Caracausi, Antonio3; Ballentine, Christopher J.4; Marty, Bernard1 | |
2020-06-08 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2020 |
卷号 | 117期号:25页码:13997-14004 |
文章类型 | Article |
语种 | 英语 |
国家 | France; USA; Italy; England |
英文摘要 | Identifying the origin of noble gases in Earth's mantle can provide crucial constraints on the source and timing of volatile (C, N, H2O, noble gases, etc.) delivery to Earth. It remains unclear whether the early Earth was able to directly capture and retain volatiles throughout accretion or whether it accreted anhydrously and subsequently acquired volatiles through later additions of chondritic material. Here, we report high-precision noble gas isotopic data from volcanic gases emanating from, in and around, the Yellowstone caldera (Wyoming, United States). We show that the He and Ne isotopic and elemental signatures of the Yellowstone gas requires an input from an undegassed mantle plume. Coupled with the distinct ratio of Xe-129 to primordial Xe isotopes in Yellowstone compared with mid-ocean ridge basalt (MORB) samples, this confirms that the deep plume and shallow MORB mantles have remained distinct from one another for the majority of Earth's history. Krypton and xenon isotopes in the Yellowstone mantle plume are found to be chondritic in origin, similar to the MORB source mantle. This is in contrast with the origin of neon in the mantle, which exhibits an isotopic dichotomy between solar plume and chondritic MORB mantle sources. The co-occurrence of solar and chondritic noble gases in the deep mantle is thought to reflect the heterogeneous nature of Earth's volatile accretion during the lifetime of the protosolar nebula. It notably implies that the Earth was able to retain its chondritic volatiles since its earliest stages of accretion, and not only through late additions. |
英文关键词 | origin of Earth' s volatiles accretion mantle plume noble gases Yellowstone |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000546763100027 |
WOS关键词 | NEON ISOTOPIC COMPOSITION ; NOBLE-GASES ; MIDOCEAN RIDGE ; HELIUM ; CONSTRAIN ; SILICATE ; ORIGIN ; CARBON ; PARK |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/274434 |
专题 | 地球科学 |
作者单位 | 1.Univ Lorraine, Ctr Rech Petrog & Geochim, CNRS, UMR 7358, BP 20, F-54501 Vandoeuvre Les Nancy, France; 2.Woods Hole Oceanog Inst, Marine Chem & Geochem Dept, Woods Hole, MA 02543 USA; 3.Inst Nazl Geofis & Vulcanol, I-90146 Palermo, Italy; 4.Univ Oxford, Dept Earth Sci, Oxford OX1 3AN, England |
推荐引用方式 GB/T 7714 | Broadley, Michael W.,Barry, Peter H.,Bekaert, David V.,et al. Identification of chondritic krypton and xenon in Yellowstone gases and the timing of terrestrial volatile accretion[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2020,117(25):13997-14004. |
APA | Broadley, Michael W..,Barry, Peter H..,Bekaert, David V..,Byrne, David J..,Caracausi, Antonio.,...&Marty, Bernard.(2020).Identification of chondritic krypton and xenon in Yellowstone gases and the timing of terrestrial volatile accretion.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(25),13997-14004. |
MLA | Broadley, Michael W.,et al."Identification of chondritic krypton and xenon in Yellowstone gases and the timing of terrestrial volatile accretion".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.25(2020):13997-14004. |
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