Millennial pulses of ore formation and an extra-high Tibetan Plateau
文献类型：期刊论文
| 作者 | Li, Yang1; Allen, Mark B.2; Li, Xian-Hua1 |
| 刊名 | GEOLOGY
 |
| 出版日期 | 2022-03-08 |
| 页码 | 5 |
| ISSN号 | 0091-7613 |
| DOI | 10.1130/G49911.1 |
| 英文摘要 | Quantifying the rhythms and rates of magmatic-hydrothermal systems is critical for a better understanding of their controls on ore formation and the dynamics of magmatic reservoirs that feed them. We reconstructed the evolution of ore-forming fluids using hydrothermal quartz from the 17.4 Ma Zhibula skarn, Tibet. Ion probe analysis reveals sharp and dramatic changes in quartz delta O-18 values between 5 parts per thousand and -9.3 parts per thousand, with fluid delta O-18 values varying between 2.8 parts per thousand and -18.2 parts per thousand, which are best explained by transient meteoric water incursion into a hydrothermal system dominated by magmatic fluids. Two pulses of magmatic fluids and a meteoric water incursion event are inferred, which operated at the millennium scale (760-1510 yr) as constrained by the aluminum diffusion chronometer. Our results indicate that magmatic reservoirs are likely water unsaturated for most of their lifetime (>10(5)-10(6) yr), with transient and episodic fluid exsolutions (similar to 10(3) yr) being driven by magma replenishment or crystallization-induced water saturation. With focused and efficient metal deposition, multiple pulses of metalliferous fluids favor the formation of giant deposits with high grade. Meteoric water delta O-18 values (-25.4 +/- 2.3 parts per thousand) derived from Zhibula quartz further suggest a paleo-elevation of 5.9 +/- 0.3 km; this transient early Miocene surface uplift plausibly was due to break-off of the oceanic slab attached to the Indian Plate. Our research highlights that ubiquitous hydrothermal quartz in orogenic belts can probe the dynamics of magmatic-hydrothermal systems and also quantify paleo-elevations, which has significant tectonic implications. |
| WOS关键词 | PORPHYRY COPPER-DEPOSIT ; REJUVENATION ; EVOLUTION ; DIFFUSION ; CRYSTALS ; RELEASE ; ISOTOPE ; HISTORY ; CLIMATE ; OXYGEN |
| 资助项目 | National Key Research and Development Program of China[2018YFA0702600] ; National Natural Science Foundation of China[42022022] ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | GEOLOGICAL SOC AMER, INC |
| WOS记录号 | WOS:000784208900001 |
| 资助机构 | National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/105113]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Li, Yang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Univ Durham, Dept Earth Sci, Durham DH1 3LE, England |
| 推荐引用方式 GB/T 7714 | Li, Yang,Allen, Mark B.,Li, Xian-Hua. Millennial pulses of ore formation and an extra-high Tibetan Plateau[J]. GEOLOGY,2022:5. |
| APA | Li, Yang,Allen, Mark B.,&Li, Xian-Hua.(2022).Millennial pulses of ore formation and an extra-high Tibetan Plateau.GEOLOGY,5. |
| MLA | Li, Yang,et al."Millennial pulses of ore formation and an extra-high Tibetan Plateau".GEOLOGY (2022):5. |
入库方式： OAI收割
来源：地质与地球物理研究所
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