Sentences with phrase «ancient rocks on»

Magnetic minerals aligned in ancient rocks on continents also showed that the continents have shifted relative to one another.

We can apply what we've learned about studying ancient rocks on Earth to Mars.

In the past year scientists have been forced to reconsider how they identify life in the most ancient rocks on earth — and elsewhere in the solar system

Not exact matches

Three giants tower over their children; Tumbling rocks on an ancient river bed; Bright green moss connecting root and boulder; Branches reaching out in every direction to drink each drop of light; A spreading canopy over a pristine patch of forest.

Early in 1947, a Bedouin shepherd accidentally found fragments of ancient scrolls inside some earthenware jars in caves high up on the rock face near the Dead Sea.

Here's some research: «Ancient rocks exceeding 3.5 billion years in age are found on all of Earth's continents.

The Afghan Taliban destroyed all representational art they could get their hands on, including two ancient rock - cut Buddha statues, because they sincerely believed Islam required it.

The historical fishermen's village is situated on a rock, safe from flooding, and — in ancient times — from pirates, too.

We enter an alcove, about the size of a squash court, and Cockell points out a honeycomb - like pattern on the rock salt walls, a possible haven for ancient forms of life.

In 2012, an amateur fossil hunter found a slab of rock covered in ancient footprints on the campus of NASA's Goddard Space Flight Center in Greenbelt, Maryland, The Washington Post reports.

The Viking landers saw water frost on rocks, the Phoenix lander found water ice buried centimeters beneath the soil, and the Curiosity rover has rolled through an ancient riverbed.

The researchers searched through nearly 1,200 published papers for data on mud rock in river deposits, and collected new field data at 125 ancient river outcrops.

Since its arrival on Mars in 2012, NASA's Curiosity rover has zapped and drilled ancient rocks in the hopes of finding evidence for past life.

The metals» solubility depends strongly on the amount of oxygen present, so the amount and type of those metals in ancient sedimentary rocks reflect how much oxygen was in the water long ago, when the sediments formed.

Spherical bubbles preserved in 3.48 billion - year - old rocks in the Dresser Formation in the Pilbara Craton in Western Australia provide evidence for early life having lived in ancient hot springs on land.

Rounded rocks I found help confirm stream on ancient Mars.

Researchers focused on the cycle of sulfur and simulated the patterns in which three different isotopes of sulfur could combine in ancient sedimentary rocks.

(Note: The red deer on the opposite page may seem to be facing west, but the ancient rock artists always depicted west on the right of a pictogram.)

NASA's Mars Exploration Rovers have enabled us to examine 3.5 - to 4 - billion - year - old sedimentary rocks on Mars, in much the same way that we study ancient strata on Earth.

After witnessing the eruption of the Mount Vesuvius in the bay of Naples, Italy, on 24 August, 79 C.E., ancient Roman scientist and writer «Pliny the Younger» documented how the volcano mouth spit burning rocks and ashes upon the nearby region.

So if — big if — life ever arose on Mars, not only could we find out, yeah, there is life somewhere else in the solar system, but the record of how that miracle occurred would still be preserved in these ancient rocks.

Based on the age of nearby rocks, the scientists estimate that the Arktocara fossil comes from the late Oligocene epoch, around the time ancient whales diversified into two groups — baleen whales (mysticetes) and toothed whales (odontocetes).

They report on their work studying ancient glass and rock defense walls in a paper published in the May issue of American Ceramic Society Bulletin.

They piled boulders left by ancient glaciers into two large rings, put black amphibolite rocks on top, layered the wall with charcoal and burned it.

They analyzed the magnetism of ancient rocks to work out their locations on the globe over time, and measured how the material under Earth's crust, the mantle, moves the continents that float on its surface.

The combination of the two rock types, along with other geologic clues, could mean only one thing: They were standing on an ancient piece of the ocean floor.

What they discovered stunned them: The meteorites showed evidence of ancient magnetic fields similar to those of rocks formed on Earth within the planet's magnetic field.

Their prediction is based on a new method of interpreting data from magnetic traces found in ancient rock samples.

Created nearly 400 million years ago on the surface of a shallow inland sea, the Marcellus Shale formed as tectonic plates pushed up the landmasses that created the Appalachian and Catskill mountain ranges and buried the ancient sea under a layer of rock almost two miles thick.

Molybdenum is now abundant because oxygen reacts with rocks to wash it into the ocean, but its source on the ancient Earth — before the atmosphere contained oxygen to weather rocks — is more mysterious.

To put the pieces of the puzzle together, they combined three approaches previously not used together to reconstruct the ancient magma plumbing system by looking for chemical signatures in lava rock collected from flows on the surface.

The geological search for ancient life frequently zeroes in on fossilized organic structures or biominerals that can serve as «biosignatures,» that survive in the rock record over extremely long time scales.

Fossils of the ancient leviathan were unearthed from 480 - million - year - old rocks exposed on a hillside in southeastern Morocco.

Based on radiometric dating and geochemical isotope analysis, Czaja characterizes his fossils as having formed in this early Vaalbara supercontinent in an ancient deep seabed containing sulfate from continental rock.

Molecular signatures in ancient rocks show the microorganisms may have existed on Earth around 3.5 billion years ago, producing some of the greenhouse gases needed to stabilise the early Earth's climate.

Common in Precambrian Shield rocks — the oldest rocks on Earth — the ancient waters have a chemistry similar to that found near deep sea vents, suggesting these waters can support microbes living in isolation from the surface.

«If the ancient rocks of Earth are producing this much hydrogen, it may be that similar processes are taking place on Mars,» said Sherwood Lollar.

The scientists estimated oxygen levels by analyzing iron found in shale rock, which was once mud on ancient seafloors.

Now the group has made a similar find in a second mine, suggesting ancient rocks could be riddled with such time capsules, right back to the early days of life on Earth.

One of the few things experts all agree on is where to conduct the search: in the three far - flung provinces that host the world's most ancient sedimentary rocks.

In dozens of spots along the rings or on small heaps of stone, the rocks seem to have been discolored by the heat of ancient fires.

Miller and his students, Ben Seitz and Cody Polack, replicated a previous experiment by having research subjects rate the relevance of words (e.g. rock, apple, ball, stick) in regards to a survival scenario on the ancient grasslands of Africa, and then tested them to see which words they could recall.

For the day's social event, we were heading out of the city on a field trip to see some ancient rock art, hiking across a semiarid rangeland known locally as the Barrens.

One of the Spirit rover team geologists, Dr. Steve Ruff, a proponent of the Home Plate (Columbia Hills) silica site on Mars having been formed by an ancient siliceous hot spring, came along on a geothermal field trip I led in February 2016 to the Rotorua area with Australian geologists who work on Archean rocks.

This produced an ancient rain of minute, rusty particles to accumulate on ancient ocean floors that is found today as bands of haematite in rock.

The teleoperated rover could also collect ancient farside rocks for delivery back to labs on Earth.

The oldest rocks so far identified on Earth are one - half billion years younger than the planet itself, so geologists have relied on certain crystals as micro-messengers from ancient times.

«You've got your work cut out if you're looking at the ancient sedimentary rock for microfossils here on Earth — and even more so on Mars,» said the paper's lead author and an associate professor at the University of Kansas, Craig Marshall.

We have instruments on board which are expressly designed to seek evidence of ancient life - what we call «biosignatures» - and we have the capability to prepare samples, drill them out of a rock, seal them in a tube, so that a future mission could go and bring them up - we call that «caching.»

A former model uses tales of sex, drugs and rock and roll in a book hitting stores on Monday to introduce the healing power of yoga sequences and demonstrate how the ancient practice of breath and meditation can fortify the mind as well as the body.