Results 201 to 210 of about 271,714 (263)

Systematic Approach for Carbonate and Volcanic Facies Classification Based on Textural and Structural Variations Observed in Brazilian Pre‐Salt Acoustic Image Logs

open access: yesJournal of Petroleum Geology, EarlyView.
ABSTRACT Facies characterization in carbonate reservoirs remains challenging due to their pronounced textural and structural heterogeneity. Variations in grain packing, cementation, and diagenetic overprints produce contrasting acoustic responses in borehole image logs, often limiting the reproducibility of facies interpretation.
Lenita de Souza Fioriti   +2 more
wiley   +1 more source

Fossil evidence for trait diversification in an adaptive radiation. [PDF]

open access: yesSci Rep
Ngoepe N   +16 more
europepmc   +1 more source
Some of the next articles are maybe not open access.

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Alternative equilibria in shallow lakes

Trends in Ecology & Evolution, 1993
The turbidity of lakes is generally considered to be a smooth function of their nutrient status. However, recent results suggest that over a range of nutrient concentrations, shallow lakes can have two alternative equilibria: a clear state dominated by aquatic vegetation, and a turbid state characterized by high algal biomass.
Scheffer, M.   +4 more
openaire   +3 more sources

TBT Causes Regime Shift in Shallow Lakes

Environmental Science & Technology, 2006
Tributyltin (TBT) is an organotin compound used since the early 1960s as a biocide in boat antifouling paints. Its use has been linked to a host of negative effects in marine ecosystems including malformations and imposex in Mollusca and acute toxicity in many other aquatic animals.
Sayer, Carl D.   +9 more
openaire   +3 more sources

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