Geochronology and Geochemical Properties of Mid-Pleistocene Sediments on the Caiwei Guyot in the Northwest Pacific Imply a Surface-to-Deep Linkage
| العنوان: | Geochronology and Geochemical Properties of Mid-Pleistocene Sediments on the Caiwei Guyot in the Northwest Pacific Imply a Surface-to-Deep Linkage |
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| المؤلفون: | Dong Xu, Haifeng Wang, Haifan Yuan, Xiguang Deng, Liang Yi, Huiqiang Yao |
| المصدر: | Journal of Marine Science and Engineering Volume 9 Issue 3 Journal of Marine Science and Engineering, Vol 9, Iss 253, p 253 (2021) |
| بيانات النشر: | Multidisciplinary Digital Publishing Institute, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | 010504 meteorology & atmospheric sciences, Pleistocene, Caiwei (Pako) Guyot, Seamount, Ocean Engineering, Guyot, Physical oceanography, 010502 geochemistry & geophysics, 01 natural sciences, Abyssal zone, lcsh:Oceanography, Paleontology, western Pacific, lcsh:VM1-989, lcsh:GC1-1581, magnetostratigraphy, Magnetostratigraphy, 0105 earth and related environmental sciences, Water Science and Technology, Civil and Structural Engineering, geography, geography.geographical_feature_category, deep-sea ventilation, middle Pleistocene, lcsh:Naval architecture. Shipbuilding. Marine engineering, Geochronology, geochemical properties, abyssal sediments, Sedimentary rock, surface-to-deep linkage, Magellan Seamounts, Geology |
| الوصف: | Seamounts are ubiquitous topographic units in the global ocean, and their effects on local circulation have attracted great research attention in physical oceanography however, fewer relevant efforts were made on geological timescales in previous studies. The Caiwei (Pako) Guyot in the Magellan Seamounts of the western Pacific is a typical seamount and oceanographic characteristics have been well documented. In this study, we investigate a sediment core by geochronological and geochemical studies to reveal a topography-induce surface-to-bottom linkage. The principal results are as follows: (1) Two magnetozones are recognized in core MABC–11, which can be correlated to the Brunhes and Matuyama chrons (2) Elements Ca, Si, Cl, K, Mn, Ti, and Fe are seven elements with high intensities by geochemical scanning (3) Ca intensity can be tuned to global ice volume to refine the age model on glacial-interglacial timescales (4) The averaged sediment accumulation rate is ~0.73 mm/kyr, agreeing with the estimate of the excess 230Th data in the upper part. Based on these results, a proxy of element Mn is derived, whose variability can be correlated with changes in global ice volume and deep-water masses on glacial-interglacial timescales. This record is also characterized by an evident 23-kyr cycle, highlighting a direct influence of solar insolation on deep-sea sedimentary processes. Overall, sedimentary archives of the Caiwei Guyot not only record an intensified abyssal ventilation during interglaciations in the western Pacific, but also provide a unique window for investigating the topography-induced linkage between the upper and bottom ocean on orbital timescales. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2077-1312 |
| DOI: | 10.3390/jmse9030253 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::34fbadfc89583179a1af0ab5b3884391 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....34fbadfc89583179a1af0ab5b3884391 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20771312 |
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| DOI: | 10.3390/jmse9030253 |