Sentence examples for in samples of rock from inspiring English sources
The fossilised remains of the oldest known lifeforms on Earth have been discovered in samples of rock collected near a remote watering hole in the middle of the Australian Outback.
This view has been discredited by careful experiments using an electric heating and cooling device; thousands of alternations between temperatures considerably higher and lower than those measured in deserts have failed to produce in samples of rock any fractures detectable even under high magnification.
It reports that the oldest known life forms on Earth have been discovered in samples of rock collected near a remote watering hole in the middle of the Australian Outback.
During solos, Sanchez impishly teases the crowd by throwing in the briefest samples of rock classics (at a December show in Mexico City, it was the opening notes of Guns N' Roses' "Sweet Child O' Mine").
The fact that noble gases of the same isotopic composition as Earth's atmosphere are found in nearly all analyses of samples of rock extruded from the mantle has been attributed, quite reasonably, to contamination from the atmosphere during, or after, the eruption of magma3,4.
Because of their abundance and minute size, microfossils can be extracted from small samples of rock secured in drilling operations.
The dogma of a dry Moon was challenged and counterchallenged in two studies examining the geochemistry of hydrogen and chlorine in samples of the mineral apatite taken from lunar rocks.
In the new research, Dr. Ellwood and his colleagues examined samples of rocks from Morocco.
In late October, the spacecraft will descend to the surface to collect a sample of rock and soil.
Much of the evidence comes from geological features indicating outbursts of liquid water, as well as in situ samples of sedimentary rocks (Squyres et al., 2004).
In the new research, published online today in Nature Geoscience, geochemists led by Junjun Zhang at the University of Chicago in Illinois, together with a colleague at the University of Bern in Switzerland, looked at titanium isotopes in 24 separate samples of lunar rock and soil.
