Sentences with phrase «longest geological time»
The projected man - made warming represents a significant change even on the longest geological time - scales.
http://www.usask.ca/ Not exact matches
The thick covering of ice and water might mess up some of the geological processes that, at least on Earth, help regulate the planet's temperature over long periods of time.
A new study by a Canadian Museum of Nature scientist helps answer a long - standing question in palaeontology — how numerous species of large, plant - eating dinosaurs could co-exist successfully over geological time.
«Having a large genetic control over the swimming direction versus magnetic cues may be an evolutionarily robust way of preserving the populations over a long stretch of geological time.»
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.
«It's been known for a long time that landslides can generate a seismic signal,» says Randall Jibson, a research geologist with the U.S. Geological Survey in Golden, Colorado.
«Compared to other organic matter, amber has the advantage that it remains chemically and isotopically almost unchanged over long periods of geological time,» explains Ralf Tappert from the Institute of Mineralogy and Petrography at the University of Innsbruck.
Minute change by minute change — over long periods of geological time — organisms are shaped to the exigencies of their environment.
«If it's been a long time since a large earthquake, then, even after another quake happens, the fault's «memory» sometimes isn't wiped out, so there's still a good chance of having another,» said Seth Stein, the study's senior author and the William Deering Professor of Geological Sciences in the Weinberg College of Arts and Sciences.
«They have worked 16 times longer than planned, driven 20 times farther than planned, and, most important, found diverse geological records of the effects of water in ancient Martian environments,» he said.
Reasoning that, because it fluctuated daily, water vapour was continually recycling itself in and out of the atmosphere, he turned his attention to carbon dioxide, a gas resident for a long time in the atmosphere whose concentration was only (at that time) dramatically changed by major sources such as volcanoes or major drawdowns such as unusual and massive episodes of mineral weathering or the evolution of photosynthetic plants: events that occur on very long, geological timescales.
Go north and before too long you'll find the geological curiosities of the Pinnacles Desert, the older - than - time stromalites of Shark Bay as well as superb diving and snorkelling with whale sharks and manta rays at Ningaloo Reef offshore.
Overall, it's not quite the geological shift of Diamond and Pearl, but changes Pokemon Black and White introduce have been a long time coming, and they are most welcome.
Speechless takes its cue from current discourse on the Anthropocene, described by writer Robert Macfarlane as «the new epoch of geological time in which human activity is considered such a powerful influence on the environment, climate and ecology of the planet that it will leave a long - term signature in the strata record.»
Fossil Necklace (2013), a necklace comprised of 170 carved, rounded fossils, spanning geological time; Second Moon (2013), a work that tracks the cyclical journey of a fragment of the moon as it circles the Earth, via airfreight courier, on a man - made year - long commercial orbit; All the Dead Stars (2009), a large map documenting the locations of 27,000 dead stars known to humanity; Light bulb to Simulate Moonlight (2009), an incandescent bulb designed to transmit wavelength properties identical to those of moonlight; and History of Darkness (ongoing), a slide archive of darkness captured at different times and places throughout the universe and spanning billions of years.
, you are lying on the floor of your place looking up, a small draft runs through the room, between the door and the window, and all things seem perfectly still, wind only disturbs concrete in imperceptible ways, or it may take millions of years to be noticed and, as the air runs through the space, all your plants move and all is animated and all is alive somehow, and here are the thoughts of all men in all ages and lands, they are not original with me, and that wind upon your plants is the common air that bathes the globe, and we have no ambitions of universalism, and I'm glad we don't, but the particles of air bring traces of pollen and are charged with electricity, desert sand, maybe sea water, and these particles were somewhere else before they were dragged here, and their route will not end by the door of this house, and if we tell each other stories, one can imagine that they might have been bathed by this same air, regrouped and recombined, recharged as a vehicle for sound, swirling as it moves, bringing the sound of a drum, like that Kabuki story where a fox recognizes the voice of its parents as a girl plays a drum made out of their skin, or any other event, and yet I always felt your work never tells stories, I tend to think that narrative implies a past tense, even if that past was just five seconds ago, one second ago was already the past, and human memory is irrelevant in geological time, plants and fish know not what tomorrow will bring, neither rocks nor metal do, but we all live here now, and we all need visions and we all need dreams, and as long as your metal sculptures vibrate they are always in the Present, and their past is a material truth alien to narrative, but well, maybe narrative does not imply a past tense at all and they are writing their own story while they gently move and breathe, and maybe nothing was really still before the wind came in, passing through the window as if through an irrational portal to make those plants dance, but everything was already moving and breathing in near complete silence, and if you're focused enough you can feel the pulse of a concrete wall and you can feel the tectonic movements of the earth, and you can hear the magma flowing under our feet and our bones crackling like a wild fire, and you can see the light of fireflies reflected in polished metal, and there is nothing magical about that, it is just the way things are, and sometimes we have to raise our voice because the music is too loud and let your clothes move to a powerful bass, sound waves and bright lights, powerful like the sun, blinding us if we stare for too long, but isn't it the biggest sign of love, like singing to a corn field, and all acts of kindness that are not pitiful nor utilitarian, that are truly horizontal as everything around us is impregnated with the deadliest violence, vertical and systemic, poisonous, and sometimes you just want to feel the sun burning your skin and look for life in all things declared dead, a kind of vitality that operates like corrosion, strong as the wind near the sea, transforming all things,
All evidence is this occurred not that long in geological time after the Earth cooled sufficiently to allow it to happen.
So now I answer the «ice - age» denialist argument (denialists usually trot out ALL their inconsistent & contradictory arguments) this way: I draw a sine - wave in the air with my hand, saying, yes, that the normal fluctuation over a long geological timeframe is to alternate between cold ice ages and warm interglacial periods, and that now we are right here in a warm interglacial period (my hand raised at the top of the wave), and if there were no human GHGs, then we would expect that over a long time frame we'd be sliding down into an ice age.
This time I believe there is a much greater probability of long term changes, as this time the tightness was not due to politically generated shortages by OPEC, but by actual supply problems and there has been the growing realization that Peak Oil, however defined, is a geological inevitability.
Temperatures over that period varied probably by less than 2 deg C, so the climate during which we developed our way of life was very consistent when compared with the long - term geological time scale.
Seventy percent of the crops and much of the topsoil in Honduras were washed away — topsoil that had accumulated over long stretches of geological time.
Long after human civilisation has perished, there could be a stratum of fossilised rock and a geological time zone that says: «We were here.»
You may be right VERY long term, in geological time frames.
Over the last half - century, people have removed so much of that protective cover by clearcutting, overgrazing, and overplowing that the world is quickly losing soil accumulated over long stretches of geological time.
What you see in the geological record is our planet has a constantly varying climate — in recent times during the Pleistocene Era (the last 2.65 million years), we have long ice ages interspersed with relatively short (10 - 20,000 years) interglacial periods.
On the other hand, CO2 is removed from the air by natural geological - scale processes and these take a long time to work.
The thin layer of topsoil that covers the earth's land surface was formed over long stretches of geological time as new soil formation exceeded the natural rate of erosion.
One of the parameters is high stand or low stand conditions based on sea level transgression / regression curves which is related to long term climate, but I am not aware of any oil companies that use anything remotely resembling what I understand to be a climate model with forcings, and certainly not one driven by something like CO2, solar or anyhting else, simply because you can not know the necessary parameters over the millions of years of geological time that you are interested in modelling.
Rock, in the right spot, is a record of planetary history, eras as long as millions of years flattened by the forces of geological time into strata with amplitudes of just inches, or just an inch, or even less.
This ice sheet melted long time ago, but left behind geological evidence of sub glacial processes that now can be put in numerical models, to test hypotheses of how they may work in modern environment.
Over the last half - century, clearcutting, overgrazing, and overplowing have removed so much of that protective cover that the world is quickly losing soil accumulated over long stretches of geological time (see «Civilization's Foundation Eroding»).
This soil, typically 6 inches or so deep, was formed over long stretches of geological time as new soil formation exceeded the natural rate of erosion.
Reasoning that, because it fluctuated daily, water vapour was continually recycling itself in and out of the atmosphere, he turned his attention to carbon dioxide, a gas resident for a long time in the atmosphere whose concentration was only (at that time) dramatically changed by major sources such as volcanoes or major drawdowns such as unusual and massive episodes of mineral weathering or the evolution of photosynthetic plants: events that occur on very long, geological timescales.