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| DOI | 10.1146/annurev-earth-073019-060021 |
| The Role of Diagenesis in Shaping the Geochemistry of the Marine Carbonate Record | |
| Fantle M.S.; Barnes B.D.; Lau K.V. | |
| 发表日期 | 2020 |
| ISSN | 0084-6597 |
| 起始页码 | 549 |
| 结束页码 | 583 |
| 卷号 | 48 |
| 英文摘要 | Carbonate sediments and rocks are valuable archives of Earth's past whose geochemical compositions inform our understanding of Earth's surface evolution. Yet carbonates are also reactive minerals and often undergo compositional alteration between the time of deposition and sampling and analysis. These changes may be mineralogical, structural, and/or chemical, and they are broadly referred to as diagenesis. Building on work over the past 40 years, we present an overview of key carbonate diagenesis terminology and a process-based framework for evaluating the geochemical impacts of carbonate diagenesis; we also highlight recent experimental and field observations that suggest metal isotopes as valuable diagenetic indicators. Our primary objectives are to demonstrate the value of coupling quantitative and analytical approaches, specifically with regard to metal isotopes and Mg/Ca, and to focus attention on key avenues for future work, including the role of authigenesis in impacting global geochemical cycles and the isotopic composition of the rock record. Quantitative frameworks utilizing well-understood diagenetic indicators and basic geochemical parameters allow us to assess the extent of diagenetic alteration in carbonate sediments. The reactivity, duration of reaction, and degree of isotopic or elemental/chemical disequilibrium determine the extent to which carbonates may be altered. Metal isotopic ratios (δ44Ca, δ26Mg, 87Sr/86Sr) can be used to constrain the extent and rate of carbonate recrystallization. Diagenetic signals may be globally synchronous, while diagenetic fluxes may impact global geochemical cycles. © Copyright 2020 by Annual Reviews. All rights reserved. |
| 关键词 | CarbonatesCarbonationIsotopesSedimentologyAnalytical approachCarbonate sedimentsDiagenetic alterationGeochemical compositionGeochemical parametersGlobal geochemical cyclesIsotopic compositionQuantitative frameworksGeochemistryauthigenesiscarbonate sedimentchemical alterationdiagenesisEarthgeochemistryisotopic compositionisotopic ratiomarine environmentrecrystallizationsediment chemistry |
| 语种 | 英语 |
| 来源机构 | Annual Review of Earth and Planetary Sciences |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/131917 |
| 推荐引用方式 GB/T 7714 | Fantle M.S.,Barnes B.D.,Lau K.V.. The Role of Diagenesis in Shaping the Geochemistry of the Marine Carbonate Record[J]. Annual Review of Earth and Planetary Sciences,2020,48. |
| APA | Fantle M.S.,Barnes B.D.,&Lau K.V..(2020).The Role of Diagenesis in Shaping the Geochemistry of the Marine Carbonate Record.,48. |
| MLA | Fantle M.S.,et al."The Role of Diagenesis in Shaping the Geochemistry of the Marine Carbonate Record".48(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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