Results 41 to 50 of about 133,064 (217)

A micromorphological evaluation of pedogenesis on Isla Santa Cruz (Galápagos) [PDF]

open access: yes, 2013
Thin sections of about 200 horizons or layers, representing 60 soil profiles in the coastal area and on the windward slopes of Isla Santa Cruz (Galápagos Islands) were analysed.
Stoops, Georges
core   +2 more sources

Goethe's basalts [PDF]

open access: yesEos, Transactions American Geophysical Union, 2006
My mother, who was born under Austria's emperor but died in New York, often cited a German rhyme which she attributed to the renowned German poet Johann Wolfgang von Goethe (1749–1832): Amerika, du hast es besser Hast keine Basalte und keine Schloesser, or America, you have it better Hast no basalts and no castles.
openaire   +2 more sources

Enhanced microbial activity in carbon-rich pillow lavas, Ordovician, Great Britain and Ireland [PDF]

open access: yes, 2015
Date of acceptance: 09/07/2015 ACKNOWLEDGEMENTS A. Sandison and C. Taylor provided skilled technical support. Boyce is funded by Natural Environment Research Council (NERC) support of the Isotope Community Support Facility at the Scottish Universities ...
Bowden, Stephen   +5 more
core   +2 more sources

Fossil trees, tree moulds and tree casts in the Palaeocene Mull Lava Field, NW Scotland: context, formation and implications for lava emplacement [PDF]

open access: yes, 2016
Megafossils and macrofossils of terrestrial plants (trees, leaves, fruiting bodies, etc.) are found in sedimentary and pyroclastic units interbedded with lavas in many ancient lava fields worldwide, attesting to subaerial environments of eruption and the
Bell, Brian R., Williamson, Ian T.
core   +1 more source

Famous Basaltic Columns [PDF]

open access: yesScientific American, 1901
n ...
openaire   +2 more sources

Thermal fluctuation fields in basalts [PDF]

open access: yesEarth, Planets and Space, 2009
AbstractThe thermal fluctuation field (Hf) is central to thermoremanent acquisition models, which are key to our understanding of the reliability of palaeomagnetic data, however,Hfis poorly quantified for natural systems. We reportHfdeterminations for a range of basalts, made by measuring rate-dependent hysteresis.
Muxworthy, A., Heslop, D., Michalk, D.
openaire   +4 more sources

Order and disorder in columnar joints [PDF]

open access: yes, 2005
Columnar joints are three-dimensional fracture networks that form in cooling basalt and several other media. The network organizes itself into ordered, mostly hexagonal columns. The same pattern can be observed on a smaller scale in desiccating starch. We show how surface boundary conditions in the desiccation of starch affect the formation of columnar
arxiv   +1 more source

Dynamic Split Tensile Strength of Basalt, Granite, Marble and Sandstone: Strain rate dependency and Fragmentation [PDF]

open access: yesarXiv, 2021
The scope of this study is to understand the strength behaviour and fragment size of rocks during indirect, quasi-static, and dynamic tensile tests. Four rocks with different lithological characteristics namely, basalt, granite, sandstone and marble are selected.
arxiv  

Towards Solving Fuzzy Tasks with Human Feedback: A Retrospective of the MineRL BASALT 2022 Competition [PDF]

open access: yesarXiv, 2023
To facilitate research in the direction of fine-tuning foundation models from human feedback, we held the MineRL BASALT Competition on Fine-Tuning from Human Feedback at NeurIPS 2022. The BASALT challenge asks teams to compete to develop algorithms to solve tasks with hard-to-specify reward functions in Minecraft.
arxiv  

Experimental studies of the resultant contact forces in drillbit-rock interaction [PDF]

open access: yes, 2014
Peer ...
Ajibose, Olusegun Kolawole   +2 more
core   +1 more source

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