دورية أكاديمية
Magnesium Isotopes of Carbonate Reveal Seasonal Climate Variation in the Central East Asia During the Middle Eocene
| العنوان: | Magnesium Isotopes of Carbonate Reveal Seasonal Climate Variation in the Central East Asia During the Middle Eocene |
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| المؤلفون: | Huaxi Zhu, Rong Hu, Weiqiang Li, Yinshuang Long, Wen Lai, Yang Zhang, Xia Zhang, Yangrui Guo, Junfeng Ji, Huayu Lu |
| المصدر: | Geophysical Research Letters, Vol 51, Iss 10, Pp n/a-n/a (2024) |
| بيانات النشر: | Wiley, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Geophysics. Cosmic physics |
| مصطلحات موضوعية: | Eocene, climate seasonality, precipitation pattern, Mg‐carbonate, Mg isotopes, lacustrine succession, Geophysics. Cosmic physics, QC801-809 |
| الوصف: | Abstract It is debated whether there was strong climate seasonality during the Eocene, which provides a close geological analogy for near‐future scenarios of greenhouse gas emissions. Lithological data suggest the existence of a broad arid zone centered around 30°N paleo‐latitude, while a humid climate was supported by palaeobotanic assemblages in East Asia. Here, we report the occurrence of massive primary lacustrine dolomite and magnesite in the central East Asia during the middle Eocene. We provide a novel perspective from magnesium isotopes to link the formation of Mg‐carbonates to seasonal dry‐wet cycles. Rapid magnesium input during the rainy season and intense evaporation in the dry season likely caused the formation of magnesium carbonates in an enclosed lake. These findings provide insights into hydroclimatic seasonality during the Eocene, contributing to our understanding of the hydrological cycle response to a greenhouse climate. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1944-8007 0094-8276 |
| Relation: | https://doaj.org/toc/0094-8276; https://doaj.org/toc/1944-8007 |
| DOI: | 10.1029/2024GL108623 |
| URL الوصول: | https://doaj.org/article/8cf729c027be4845857f347b07c7237a |
| رقم الأكسشن: | edsdoj.8cf729c027be4845857f347b07c7237a |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19448007 00948276 |
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| DOI: | 10.1029/2024GL108623 |