Results 121 to 130 of about 824,380 (294)
Habitable Snowballs: Temperate Land Conditions, Liquid Water, and Implications for CO$_2$ Weathering
, 2019 Habitable planets are commonly imagined to be temperate planets like Earth, with areas of open ocean and warm land. In contrast, planets in snowball states, where oceans are entirely ice-covered, are believed to be inhospitable.
Lee, Christopher +3 more
core +1 more source
The Material Basis of 18th‐Century Meissen Porcelain
Archaeometry, EarlyView.ABSTRACT In the summer of 1708, the quest for making hard‐paste porcelain from Saxonian clay and other mineral resources succeeded. This was achieved by applying as its essential ingredient newly discovered pure kaolin from Heidelsberg near Aue, western Saxon Ore Mountains.
Robert B. Heimann
wiley +1 more source
The Influence of Weathering on Hydrogeochemistry of Streams Draining Volcanic Rocks: Bidkhan Stream, Southeast of Bardsir in Kerman [PDF]
نشریه جغرافیا و برنامهریزی, 2015 Bidkhan stream drains the caldera of the inactive volcano of Bidkhan which lies at a distance of 40 Km southeast of Bardsir town of Kerman Province. The main purpose of this study was to determine the source of ions and compounds dissolved in this stream
Sara Sheikh Fakhradini, Ahmad Abbasnejad
doaj
Frontiers in Earth Science, 2019 Silicate weathering is a dominant control on the natural carbon cycle. The supply of rock (e.g., via mountain uplift) has been proposed as a key weathering control, and suggested as the primary cause of Cenozoic cooling.
Philip A. E. Pogge von Strandmann +3 more
doaj +1 more source
Terrestrial exposure of a fresh Martian meteorite causes rapid changes in hydrogen isotopes and water concentrations [PDF]
, 2018 Determining the hydrogen isotopic compositions and H2O contents of meteorites and their components is important for addressing key cosmochemical questions about the abundance and source(s) of water in planetary bodies.
A Al-Kathiri +30 more
core +1 more source
Boreas, EarlyView.The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo +5 more
wiley +1 more source
Quaternary Science AdvancesSecondary weathering of exposed continental shelf sediment at low-latitudes may play a significant role in atmospheric CO2 consumption during glacial periods, which is negative feedback for climate stability. However, more lines of evidences are required
Chi Zhang +5 more
doaj +1 more source
The applications of chemical thermodynamics and chemical kinetics to planetary atmospheres research [PDF]
, 1990 A review of the applications of chemical thermodynamics and chemical kinetics to planetary atmospheres research during the past four decades is presented with an emphasis on chemical equilibrium models and thermochemical kinetics.
Fegley, Bruce, Jr.
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Palaeowinds and depositional conditions from Holocene loess in Sweden and Finland
Boreas, EarlyView.The nature of deglacial and Holocene wind regimes in Fennoscandia is debated, as is the degree to which wind‐blown loess deposits exist in the region. Loess deposits in Fennoscandia are often relatively thin, discontinuous and less well‐sorted than typical loess, and questions remain over the degree of their post‐depositional reworking and the impact ...
Calum J. Edward +6 more
wiley +1 more source
Predicting the dissolution kinetics of silicate glasses using machine learning
, 2017 Predicting the dissolution rates of silicate glasses in aqueous conditions is a complex task as the underlying mechanism(s) remain poorly understood and the dissolution kinetics can depend on a large number of intrinsic and extrinsic factors.
Bauchy, Mathieu +5 more
core +1 more source