Results 161 to 170 of about 279,026 (300)

Polymict melt‐bearing breccia dikes in the Morokweng impact structure formed by slip‐induced mechanical mixing of pseudotachylite and cataclasite along large‐displacement impact faults

Meteoritics &Planetary Science, EarlyView.
Abstract A core drilled through shocked and faulted Archean granitoid gneisses and dolerites in the eroded peak ring of the 70–80 km diameter Morokweng impact structure intersects multiple centimeter‐ to meter‐wide clastic‐matrix breccias containing a polymict clast population of lithic and mineral clasts and altered, millimeter‐ to centimeter ‐size ...
Roger L. Gibson, S'lindile S. Wela, Leonidas C. Vonopartis, Marco A. G. Andreoli   +3 more
wiley   +1 more source

Mountain‐top spherules: Criteria to identify natural and synthetic particles

Meteoritics &Planetary Science, EarlyView.
Abstract Natural microspherules are important tracers of geologic and environmental processes in modern and ancient deposits. However, anthropogenic contamination can dilute natural collections by releasing synthetic microspherules into the environment.
M. R. Boyd, M. J. Genge
wiley   +1 more source

Mechanical Response and Failure Characteristics of Granite Under In Situ High-Temperature and High-Pressure True Triaxial Conditions. [PDF]

Materials (Basel)
Ma Y, Fu X, Wu Y, Zhou C, Xue J, Zhang X, Yang J, Li S, Li X, Mao T, Hu Y, Diao Y, Sun X.   +12 more
europepmc   +1 more source

Geophysical investigation of the Santa Marta impact structure—Piauí State, Brazil

Meteoritics &Planetary Science, EarlyView.
Abstract The Santa Marta impact structure in northeastern Brazil, recognized as a partially preserved complex crater, was investigated through an integrated geophysical study employing magnetotelluric (MT) and gravity methods. Our research provides constraints on the crater's subsurface architecture.
Elienara Vasconcelos, João De Oliveira, Marcos Vasconcelos, Martyn Unsworth, Andrea Santos‐Matos, Florivaldo Sena   +5 more
wiley   +1 more source

Radiological risk assessment and geochemical signatures of calc-alkaline bostonite dikes. [PDF]

Sci Rep
Gawad AEA, El Rahman RMA, Hanfi MY.
europepmc   +1 more source

Granit

, 2012
Source: Adelbert Stifter: Gesammelte Werke in sechs Bänden, [herausgegeben von Max Stefl,] Band 3, 6.–10. Tausend der Gesamtausgabe, Wiesbaden: Insel, 1959.
openaire   +1 more source

Novel Glomeromycotina–moss associations identified in California dryland biocrusts

New Phytologist, EarlyView.
Summary Drylands, which comprise c. 45% of Earth's land area, host biological soil crusts (biocrusts): symbiotic communities of cyanobacteria, fungi, algae, lichen, and bryophytes that stabilize soil and support key ecosystem functions. Moss‐dominated biocrusts are particularly interesting due to their potential to illuminate ancient bryophyte–fungal ...
Kian H. Kelly, Claudia Coleine, Chris Coshland, Jason E. Stajich   +3 more
wiley   +1 more source

Impact of intragrain chemical heterogeneities on ⁴⁰Ar/³⁹Ar and ⁸⁷Rb-⁸⁷Sr white mica dates. [PDF]

Contrib Mineral Petrol
Jakobsson V, Spikings R, Kutzschbach M, Ribeiro B, Hames W, Berger A, Erhardt T, Müller W.   +7 more
europepmc   +1 more source

Seed pellets containing activated carbon increase emergence of native plant species used in dryland restoration following herbicide application

Restoration Ecology, EarlyView.
Abstract Introduction Over half of dryland ecosystems worldwide are degraded, making restoration a priority. Most dryland restoration efforts use seed‐based approaches, which often result in limited establishment of desirable species. The dual challenges of abiotic stressors and invasive species dominance are key barriers to native plant community ...
Emily H. Swartz, Bailey Caldwell, Caroline A. Havrilla   +2 more
wiley   +1 more source

Correlations between chromaticity parameters and shear strength of granite residual soil with different free iron oxide content and moisture content. [PDF]

Sci Rep
Wang Z, Deng W, Diao C, Kuang X, Yin J.
europepmc   +1 more source