Unraveling clay-mineral genesis and climate change on Earth and Mars using machine learning-based VNIR spectral modeling

American Mineralogist, Journal Year: 2025, Volume and Issue: 110(2), P. 217 - 231

Published: Feb. 1, 2025

Abstract Clay minerals are common in martian geological units and globally widespread on Earth. Understanding the origin, formation, alteration of clay is crucial for unraveling past environmental conditions Earth Mars, which composition crystallinity serve as important surrogate indicators addressing these issues. Here, 621 soil sediment samples from five chronosequences representing different climatic zones China were investigated using visible to near-infrared reflectance (VNIR) combination with X-ray diffraction (XRD) analysis. The (i.e., illite crystallinity, chemistry index, kaolinite crystallinity) mineral index (CMAI) analyzed conventional methods then predicted through a spectral modeling approach. Our results show that pedogenic or sedimentary origin characterized by broad range poorly ordered structure, especially when generated an intense weathering environment. Predictive models constructed data-mining methods, including partial least-squares regression (PLSR), random forest (RF), Cubist algorithms. predictive performance CMAI proxies robust, overall accuracy 78% residual prediction deviation (RPD) 2.57. We also found model’s predicting clay-mineral-related increased 45% (RF) compared PLSR models. suggest VNIR spectroscopy combined RF has potential be alternative broadly applicable tool analyzing typical clay-mineral proxies, substituting series mineralogic analyses. Spectral can reveal genetic information at both field regional scales, profound implications Mars missions other space exploration programs.

Language: Английский

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Mineral Types Dominate Microbiomes and Biogeochemical Cycling in Acid Mine Drainage

Water Research, Journal Year: 2025, Volume and Issue: 278, P. 123367 - 123367

Published: Feb. 22, 2025

Language: Английский

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Water characteristics and retention in Angkor sandstone monuments and their linkage with microorganisms responsible for ammonia oxidation and nitrate accumulation

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 969, P. 178636 - 178636

Published: Feb. 26, 2025

Language: Английский

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Trends and Hotspots in Soil Minerals’ Impacts on Carbon Stability Research: A Bibliometric Analysis Based on Web of Science

Processes, Journal Year: 2025, Volume and Issue: 13(3), P. 821 - 821

Published: March 11, 2025

The association with minerals is the most critical factor influencing stability of organic carbon in soil. It essential to gain an in-depth understanding research progress and future development trends regarding impact soil on both domestically internationally identify current key issues; a total 1834 papers from Web Science Core Collection database were selected as data source. These examined using CiteSpace, HistCite, VOSviewer, Origin 9.1 tools. analysis categorized visualized based countries, institutions, journals, disciplines, keywords, utilizing indices like number articles total/average citation frequency. results indicate that publications study their has been increasing 2013 2023. China United States have significantly led this field. However, collaborations among countries also exhibit significant regional characteristics. Chinese Academy Sciences (CAS) publications. Yet, its average frequency local citations only 0.81 per paper, lower than top ten 2.23 paper. journal highest field Nature Communications, 248 articles. main hotspots focus aspects such adsorption by minerals, catalytic transformation, redox reactions. Future should build foundation more detailed mechanisms, particularly long-term effects different environmental factors time scales stability.

Language: Английский

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Overview of the Mineralosphere and research progress on its environmental effects

Science China Earth Sciences, Journal Year: 2025, Volume and Issue: unknown

Published: March 19, 2025

Language: Английский

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