Widespread abiotic methane in chromitites
نویسندگان
چکیده
منابع مشابه
Massive production of abiotic methane during subduction evidenced in metamorphosed ophicarbonates from the Italian Alps
Alteration of ultramafic rocks plays a major role in the production of hydrocarbons and organic compounds via abiotic processes on Earth and beyond and contributes to the redistribution of C between solid and fluid reservoirs over geological cycles. Abiotic methanogenesis in ultramafic rocks is well documented at shallow conditions, whereas natural evidence at greater depths is scarce. Here we ...
متن کاملPlatinum-group Minerals in Podiform Chromitites of the Oman Ophiolite
Chromitite lenses rich in the platinum-group elements (PGE) have recently been discovered in the deeper part of the mantle section of the northern part of the Oman ophiolite. In terms of stratigraphic level, there are two types of chromitite: Moho transition zone (MTZ) and mantle types. The mantle type can be further classified into two subtypes: PGE-poor and PGE-rich. Platinum-group minerals (...
متن کاملThe effect of widespread early aerobic marine ecosystems on methane cycling
6 The balance of evidence suggests that oxygenic photosynthesis had evolved by 3.0–2.7 Ga, several 7 hundred million years prior to the Great Oxidation ≈2.4 Ga. Previous work has shown that if oxygenic 8 photosynthesis spread globally prior to the Great Oxidation, this could have supported widespread 9 aerobic ecosystems in the surface ocean, without oxidizing the atmosphere. Here we use a suit...
متن کاملWidespread methane seepage along the continental margin off Svalbard - from Bjørnøya to Kongsfjorden
Numerous articles have recently reported on gas seepage offshore Svalbard, because the gas emission from these Arctic sediments was thought to result from gas hydrate dissociation, possibly triggered by anthropogenic ocean warming. We report on findings of a much broader seepage area, extending from 74° to 79°, where more than a thousand gas discharge sites were imaged as acoustic flares. The g...
متن کاملMethane in Kano-Nigeria atmosphere
ABSTRACT Methane concentrations in Kano municipality have been attributed to the burning of solid and fossil fuels and industrial processes. Using an automatic gas sampling system, methane in the Kano atmosphere was determined. Its distribution in the municipality was skewed towards high frequency of low concentration with a mean and standard deviation of 0.61? 0.39 ?g/m3. Similarly the distri...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Scientific Reports
سال: 2018
ISSN: 2045-2322
DOI: 10.1038/s41598-018-27082-0