spherule
1
9.9
- noun
- /ˈsfirˌyül/
:
esférula
- The geologists discovered tiny spherules that were formed by volcanic activity in the region.
- glassy spherules
Examples
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If debris was raining down from the atmosphere, the artifacts should have acted as a shield preventing spherules from accumulating in the layer underneath.
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The sandy beach was dotted with small spherules that glistened in the sunlight.
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His investigation also confirmed that the spherules were not of cosmic origin but were formed from earth materials.
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There were up to 30 times more spherules at and just above the Clovis surface than beneath the artifacts.
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At each site, he found the same microscopic spherules, which are the diameter of a human hair and distinct in appearance.
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Where Surovell found no spherules, we found hundreds to thousands," said Malcolm LeCompte, a research associate professor at Elizabeth City State University and lead author of the newly released PNAS article.
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The 2012 independent study of micro-spherules related to an extraterrestrial impact hypothesis was published in the Proceedings of the National Academy of Sciences using Clovis-age sediments from Topper that confirm the original 2007 Firestone study.
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Under the microscope, the sample revealed many distinct spherules that were about the size of a pinhead.
Synonyms
A very small round particle used in science and medicine to carry medicines
How Small
Surface Forms
Morphology
Etymology
Spherule comes from sphere ('ball') and the small ending -ule ('small'). So a spherule is literally a tiny round ball, which is why the word means a small, roughly spherical particle.