Rhenium variations in molybdenite (MoS2): Evidence for progressive subsurface oxidation

Autor:	Grethe Hystad, Dimitri A. Sverjensky, Melissa McMillan, Robert M. Hazen, Holly J. Stein, Aaron Zimmerman, Robert T. Downs, John T. Armstrong, Joshua J. Golden, Ian Goldstein
Rok vydání:	2013
Předmět:	Pangaea Great Oxygenation Event Supercontinent cycle Geochemistry chemistry.chemical_element Weathering Rhenium Supercontinent Geophysics chemistry Space and Planetary Science Geochemistry and Petrology Molybdenum Molybdenite Earth and Planetary Sciences (miscellaneous) Geology
Zdroj:	Earth and Planetary Science Letters. 366:1-5
ISSN:	0012-821X
DOI:	10.1016/j.epsl.2013.01.034
Popis:	Temporal trends in Earth's near-surface mineralogy correlate with major events in Earth's geochemical and tectonic history. New and published analyses of 422 molybdenite (MoS2) specimens from 135 localities with known ages from 2.91 billion years (Ga) to 6.3 million years (Ma) reveal two statistically significant trends. First, systematic increases in average and maximum trace concentrations of Re in molybdenite since 3.0 Ga point to enhanced oxidative weathering by subsurface fluids. In addition, episodic molybdenum mineralization correlates with five intervals of supercontinent assembly from ∼2.7 Ga (Kenorland) to 300 Ma (Pangaea).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0a923bdffc81898ee394be3768eb39f2 https://doi.org/10.1016/j.epsl.2013.01.034 Zobrazit plný text záznamu Full Text from ScienceDirect