Results 81 to 90 of about 696,011 (373)
Modelling igneous rock mechanics parameter based on logging data in Shunbei oil field [PDF]
, 2021 Wenxia Li +4 more
openalex +1 more source
Geological Journal, EarlyView.Carbonates from Santos Basin revealed U–Pb ages correlated with basalt ages (A), suggesting that they were formed during magmatic events. These events placed hot CO2 in the reservoir, which, when mixed with carbonate‐rich cold water (B), led to thermal convection, enabling the formation of the U contained in the carbonates.
Marco António Ruivo de Castro e Brito +8 more
wiley +1 more source
The relationship between cellular protein content and selenium accumulation in freshwater microalgae
Integrated Environmental Assessment and Management, EarlyView.Abstract Variability in the bioconcentration of selenium (Se) by primary producers at the base of the food web results in uncertainty in predictions of bioaccumulation and ecological risk to higher trophic level organisms. Water chemistry, speciation of Se, and periphyton community composition have all been suggested as factors that contribute to ...
Courtney Bogstie +3 more
wiley +1 more source
The building stones and slates of Killin : an investigation of stone for the built heritage [PDF]
, 2010 The village of Killin lies in an area of dramatic landscape and mountain scenery. The use of local stone in the buildings gives a direct connection to this landscape and reflects the local geology, comprising mostly metamorphic rocks of Precambrian age
Albornoz-Parra, L.J. +5 more
core
Eos, Transactions American Geophysical Union, 1983 “Igneous Rocks was written for undergraduate geology majors who have had a year of college‐level chemistry and a course in mineralogy … and for beginning graduate students. Geologists working in industry, government, or academia should find this text useful as a guide to the technical literature up to 1981 and as an overview of topics with which they ...
openaire +2 more sources
Is Altruism in Nordic Foreign Aid Dead?
Journal of International Development, EarlyView.ABSTRACT Historically, the Nordic countries have been renowned for their generous and altruistic foreign aid policies. Since the 2010s, significant transformations in aid budgets, policy instruments and policy objectives have taken place. This paper analyses one of the Nordic countries, Denmark, and tests whether substantive shifts in aid allocation ...
Salma Mahamed
wiley +1 more source
Possible petrogenetic associations among igneous components in North Massif soils: Evidence in 2-4 mm soil particles from 76503 [PDF]
Studies of Apollo 17 highland igneous rocks and clasts in breccias from the North and South Massifs have described magnesian troctolite, norite, anorthositic gabbro, dunite, spinel cataclasites, and granulitic lithologies that may have noritic anothosite
Bishop, Kaylynn M. +2 more
core +1 more source
Journal of Quaternary Science, EarlyView.ABSTRACT The sediment signature of glacial erosion products exported from Hudson Strait to the Labrador Sea during Hudson Strait Heinrich (HS‐H) events is evaluated using four distinct proxies: paired δ18Ο and δ13C data on the carbonate fraction, εNd and U–Pb isotopes in the silicate fraction, the mineral composition of the <2 mm bulk sediment fraction,
John T. Andrews +3 more
wiley +1 more source
Age and spatial behavior determine survival of male elk during the hunting season
The Journal of Wildlife Management, EarlyView.We sought to investigate factors that influenced survival of male elk in Montana, USA, during the hunting season using 4 years of movement, age, and survival data. Our findings demonstrate that use of security attributes are the result of behavioral and demographic mechanisms with some age‐based nuances.
Emily R. Gelzer +5 more
wiley +1 more source
Mechanical impacts of climbing on cliff vegetation: Contrasting management concepts
People and Nature, EarlyView.Abstract Climbing a boulder for the first time often means entering a previously inaccessible ecosystem, many of which are inhabited by rare species. Little is known about the impacts of first ascents on cliff vegetation, especially with respect to different rock types.
Isabell A. Österle +4 more
wiley +1 more source