Mineralogical Controls on Methane Hydrate Enrichment in Fine-Grained Sediments

Mineralogical Controls on Methane Hydrate Enrichment in Fine-Grained Sediments | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 2 March 2026 V1 Latest version Share on Mineralogical Controls on Methane Hydrate Enrichment in Fine-Grained Sediments Authors : Xiaolei Xu 0009-0004-7368-7883 , Chenyang Bai 0000-0002-9991-8342 [email protected] , Pibo Su , Shujun Han , and Guangxue Zhang Authors Info & Affiliations https://doi.org/10.22541/au.177246903.34909686/v1 41 views 43 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Fine-grained sediments contain over 90% of marine methane hydrate, significantly impacting the global carbon cycle and climate system. The formation of hydrates in these sediments is complex and not well understood. Minerals play a crucial role in determining the properties of porous media (sediments). We investigated nucleation controls using quartz-bentonite mixed samples based on data from the South China Sea. Differential scanning calorimetry (DSC) shows a nonlinear nucleation efficiency pattern. Low-field nuclear magnetic resonance and particle size analysis reveal a three-stage mechanism: (1) initial inhibition due to strong water absorption by minor clay; (2) promotion through optimal clay aggregation into ”pseudo-coarse particles” that enhance pore space; (3) inhibition caused by pore filling from excessive clay. These findings clarify the unique nonlinear accumulation patterns of hydrates in fine-grained sediments, providing essential insights for assessing global methane inventories and their potential environmental impacts. Supplementary Material File (1066384_0_merged_1771519239.pdf) Download 966.70 KB File (grl-mineralogical controls on methane hydrate enrichment in fine-grained sediments-suppinfo-xuxiaolei.docx) Download 800.18 KB File (grl-mineralogical controls on methane hydrate enrichment in fine-grained sediments-word-xiaolei xu.docx) Download 1.24 MB Information & Authors Information Version history V1 Version 1 02 March 2026 Copyright This work is licensed under a Creative Commons Attribution 4.0 International License Keywords dsc fine-grained sediments lf-nmr methane hydrate mineralogical controls Authors Affiliations Xiaolei Xu 0009-0004-7368-7883 China University of Geosciences (Beijing) View all articles by this author Chenyang Bai 0000-0002-9991-8342 [email protected] China University of Geosciences Beijing View all articles by this author Pibo Su Guangzhou Marine Geological Survey, Ministry of Natural Resources View all articles by this author Shujun Han PetroChina Research Institute of Petroleum Exploration & Development View all articles by this author Guangxue Zhang Guangzhou Marine Geological Survey View all articles by this author Metrics & Citations Metrics Article Usage 41 views 43 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Xiaolei Xu, Chenyang Bai, Pibo Su, et al. Mineralogical Controls on Methane Hydrate Enrichment in Fine-Grained Sediments. Authorea . 02 March 2026. DOI: https://doi.org/10.22541/au.177246903.34909686/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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