#dinosaurage

[india24h]

According to a new study, octopus ancestors existed before the dinosaur age.

https://india24.live/city-news/according-to-a-new-study-octopus-ancestors-existed-before-the-dinosaur-age/

[fumpkins]

Dinosaur-age landscapes lurk in Southern Hemisphere | Science

The red hematite mined for iron on Brazil’s Urucum plateau formed a cap that held back disintegration for countless years.

PAULO VASCONCELOS

Reaching the top of the Urucum plateau, a shock of rust-red land thrust 1 kilometer above the Brazilian savanna, is a journey into Earth’s deep past. In spite of the area’s heavy, erosive rains, the surface area of the plateau has actually stayed mostly the same for some 70 million years, making it Earth’s earliest recognized landscape. Stroll along it and you’re just a few meters listed below the surface area that dinosaurs when trod.

That stunning image emerges from a research study published this month in Earth and Planetary Science Letters by a group led by Paulo Vasconcelos, a geochemist at the University of Queensland in Brisbane, Australia. Up until just recently, researchers might approximate disintegration just by taking a look at the sediment sloughed off of a surface area. However brand-new geochemical tools established by, to name a few, Vasconcelos and his associates determine disintegration from rock that’s left. “They all converge to the same story,” Vasconcelos states. “Though it’s taken some time to convince people.”

Earth researchers state ancient landscapes might exist atop other inselbergs, a German term for the separated plateaus that dot geologically peaceful areas in the Southern Hemisphere that have actually not been improved by plate tectonics or planed away by ice sheets. Geologists had actually believed that these inselbergs, discovered in Brazil, Australia, and southern Africa, are old—withstanding while disintegration removed away the surrounding landscape. Now, that history is emerging. “It’s almost like the movies,” states William Dietrich, a geomorphologist at the University of California, Berkeley. “You expect to see exotic animals wandering around.”

For years, geomorphologists have actually focused on areas where plate tectonics speeds up geologic modification, thrusting up mountains, opening rifts, and producing traps for oil and gas. “Where do most geologists go?” asks Paul Bierman, a geologist at the University of Vermont in Burlington. “They go to the mountains. Or to oil.” However the brand-new geochemical tools are turning geoscientists on to the appeals of the world’s sluggish parts.

Vasconcelos and his group utilized 4 various geochemical dating systems to expand the story of the Urucum plateau and its next-door neighbor, the Santa Cruz. One made the most of grains of the mineral manganese oxide that formed when the surface area was very first exposed to rain. The grains included trace quantities of radioactive potassium, which has actually gradually rotted into argon since, supplying a clock that reveals the landscape formed 60 million to 70 million years earlier. Another gauge of disintegration originates from a set of isotopes—of helium, beryllium, and aluminum—that type when cosmic rays bombard surface area rocks. The high abundances of these isotopes recommend the plateaus shed just 1 meter of product every 10 million years; the surrounding landscape, on the other hand, most likely worn down at 100 times that rate, the group concludes. “They put together an erosional history that’s very compelling and exceptional,” Dietrich states. “I don’t know something so cleverly dated.”

The outcomes raise a brand-new concern, states Jane Willenbring, a geomorphologist at the Scripps Organization of Oceanography in San Diego, California: “What makes landscapes persist for millions of years?” Previously, the earliest recognized surface areas had actually been discovered in dry areas like the Atacama Desert in Chile or the dry valleys of Antarctica, where water-driven disintegration is sluggish. Paradoxically, the durability of the Brazilian plateaus depends upon water, states Ken Farley, a geochemist at the California Institute of Technology in Pasadena and a co-author of the paper. They are abundant in a kind of iron oxide called hematite, which responds with quartz liquified in rainwater to form difficult blocks of rock that armor the soil. “It’s just iron oxide, nothing else there,” Farley states.

Comparable plateaus safeguarded by iron or silica most likely exist throughout the sluggish lands. “Vasconcelos’s finding has the potential to motivate other researchers to come back to ancient and slow landforms,” states Fabiano Pupim, a geomorphologist at the Federal University of São Paulo in Diadema, Brazil.

One lure is the long histories they hold. “This surface has seen a lot of geochemical processes,” Vasconcelos states. “If something very drastic happened on the entire planet, a signature should be left.” He’s developing a technique to tease out rains and temperature level histories from oxygen isotopes in goethite, an iron oxide that caps inselbergs in Brazil and Australia. These surface areas can likewise assist researchers evaluate how frequently uncommon, effective intraplate earthquakes strike an area. If the ancient cap is unbroken, any faults discovered in the rock listed below it need to be related to even older earthquakes, states Bierman, who just recently utilized a separated ancient plateau in South Africa to judge the seismic hazard to a nuclear reactor.

Inselbergs hold another present: deposits of focused iron ore, safeguarded from getting rid of by the impenetrable surface area. Left alone, the Urucum may exist for another 30 million years. Today, mankind is getting the job done much quicker. When the group checked out previously this years, the majority of the plateau’s surface area had actually been lost to mining, Farley states. “If we went back there, I’m not sure this material would be left.”

New post published on: https://livescience.tech/2019/06/27/dinosaur-age-landscapes-lurk-in-southern-hemisphere-science/

[chloezara11]

After 4 days with NO internet & only rare moments of 3G, we FINALLY have internet..I'm back from the dinosaur age! 😆👍🏼 #Wifi #Internet #EE #EEInternet #broadband #imback #happy #friday #helloworld #dinosaurage

[shamelessballoonwizard]

#Dinosaur #dinosaureggcakes #dinosaurage #dinosaurpileup #dinosauradventurepark #dinosaursofthewildwest #dinosaurjammies #dinosaurinBali #dinosaurgirl #dinosaurtrump #dinosaurgarbage #dinosaurtimes #DinosaurioHerenciaDeMiPrimo #dinosaurkids #dinosaurdesigns #dinosaurpumpkin #dinosaurroom #dinosauria #dinosaurhunter #dinosaurjr #dinosaurnameicantpronounce #dinosaurphone #dinosaurworld #DinosaurGame #dinosaurplanter #dinosaurnutrition #dinosauradventure #dinosaurbutterfly #dinosaurdepot #dinosauroc #dkskustomgear #tshirts https://www.instagram.com/p/BuHNnlxluWd/?utm_source=ig_tumblr_share&igshid=x5ulomovwqeg

[evnoweb]

OTR Links 01/26/2019

Programming paradigms for dummies: what every programmer should know | the morning paper

Programming paradigms for dummies: what every programmer should know | the morning paper – https://t.co/dOsSIOJ8Ao via @Shareaholic

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The Best of Ontario-Educators Daily

The best of ontario-educators daily is out! https://t.co/opUpRwhgtJ Stories via @turnmeluce @RacquelCarlow @omlandbl #cdnpoli #edchat

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The Best of Ontario-Educators 5 Daily

The latest The Doug Peterson Daily! https://t.co/MITYHXXc0g Thanks to @sburnie13 @OECTAHawk @Sabres_Science #topoli #onted

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10 Book Suggestions To Help You Get Your Life Together – Society19

10 Book Suggestions To Help You Get Your Life Together https://t.co/UBNXu6lhpa via @flipboard

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Library and Archives Canada buys book owned by Hitler – The Globe and Mail

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Google Chrome Adding Malicious Drive-By-Downloads Protection

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How to Use ‘Do Not Disturb’ on Your Phone (While Still Letting Important Calls Through) – The New York Times

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Google Voice VoIP calling is rolling out now, 100% next week – 9to5Google

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Fransham: Ottawa’s public school board needs a plan that inspires | Ottawa Citizen

Fransham: Ottawa’s public school board needs a plan that inspires https://t.co/irXkAbrz6R via @flipboard

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Logged out

Social networks put your privacy at risk, even when you don’t have an account https://t.co/MQwOh2Cde5 via @flipboard

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12 Tips to Get the Most Out of Your Apple AirPods | PCMag.com

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Canada’s 2019 tax season: 4 things you need to know – National | Globalnews.ca

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How to send files, links, and text from your phone to your desktop

How to send files, links, and text from your phone to your desktop https://t.co/AePEfGZTpD via @flipboard

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The Best of Ontario-Educators Daily

The best of ontario-educators daily is out! https://t.co/fnLQrKs3he Stories via @yvesmainville @msvalois @siriusnerd #vancouver #covingtonboys

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This Trojan infects Chrome browser extensions, spoofs searches to steal cryptocurrency | ZDNet

This Trojan infects Chrome browser extensions, spoofs searches to steal cryptocurrency https://t.co/QD6tddqi66 via @flipboard

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The Best of Ontario-Educators 4 Daily

The latest The Best of Ontario-Educators 4 Daily! https://t.co/Hb9gxF76DO Thanks to @MsBritten1 @lstrangway @zengarden17 #edchat #onpoli

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The Best of Ontario-Educators 2 daily

The best of ontario-educators2 daily is out! is out! https://t.co/saABa85OwN Stories via @UWindsor @lisaannefloyd @brmf_rm #mentalhealth #dinosaurage

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The Best of Ontario-Educators 3 Daily

The latest Best of Ontario-Educators3 Daily! https://t.co/Kspwc5cD0l Thanks to @MrsMace_LDSB @DellaLataille @mcIntyre29 #edtech #edchat

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The Doug Peterson Community News

The latest The Doug Peterson Community News! https://t.co/6ItGGOL27L Thanks to @rjnicolson @EdSpeakersCo @CathyMere #education #highered

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This Week in Ontario Edublogs – doug — off the record

This Week in Ontario Edublogs https://t.co/qcg5z4pbM0 pic.twitter.com/sO6hr9l05M

— More great reads by more great people in #Onted via @dougpete https://t.co/45u6JCUdHa@Ahpotts@dcarruthersedu@KPDSB_Schools@Toadmummy@marexdad@wheeler_laura@noasbobs Happy Friday everyone! #FF

— Peter Cameron (@cherandpete) January 25, 2019

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Twitter

This Week in Ontario Edublogs https://t.co/qcg5z4pbM0 pic.twitter.com/sO6hr9l05M

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OTR Links 01/25/2019 – doug — off the record

OTR Links 01/25/2019 https://t.co/mfxa9mAEQw

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Posted from Diigo. The rest of my favorite links are here.

OTR Links 01/26/2019 published first on https://medium.com/@DigitalDLCourse

[lastlaraonearth]

That shit is prehistoric #dinosaurage

[inktornados]

"I fucked your mom." "So I see your into antiques..."

[tailormadeup-blog]

The latest technology for your in-car entertainment system. #dinosaurage #ilovethe90s #hifi #vhs #gangster #not #love (Taken with Instagram)

[fumpkins]

Dinosaur-age landscapes lurk in Southern Hemisphere | Science

The red hematite mined for iron on Brazil’s Urucum plateau formed a cap that held off erosion for millions of years.

PAULO VASCONCELOS

Climbing to the top of the Urucum plateau, a shock of rust-red land thrust 1 kilometer above the Brazilian savanna, is a journey into Earth’s deep past. Despite the region’s heavy, erosive rainfall, the surface of the plateau has remained largely unchanged for some 70 million years, making it Earth’s oldest known landscape. Walk along it and you’re only a few meters below the surface that dinosaurs once trod.

That startling picture emerges from a study published this month in Earth and Planetary Science Letters by a team led by Paulo Vasconcelos, a geochemist at the University of Queensland in Brisbane, Australia. Until recently, scientists could estimate erosion only by looking at the sediment sloughed off of a surface. But new geochemical tools developed by, among others, Vasconcelos and his colleagues measure erosion from rock that’s left behind. “They all converge to the same story,” Vasconcelos says. “Though it’s taken some time to convince people.”

Earth scientists say ancient landscapes could exist atop other inselbergs, a German term for the isolated plateaus that dot geologically quiet regions in the Southern Hemisphere that have not been reshaped by plate tectonics or planed away by ice sheets. Geologists had suspected that these inselbergs, found in Brazil, Australia, and southern Africa, are old—enduring while erosion stripped away the surrounding landscape. Now, that history is emerging. “It’s almost like the movies,” says William Dietrich, a geomorphologist at the University of California, Berkeley. “You expect to see exotic animals wandering around.”

For decades, geomorphologists have fixated on regions where plate tectonics accelerates geologic change, thrusting up mountains, opening rifts, and creating traps for oil and gas. “Where do most geologists go?” asks Paul Bierman, a geologist at the University of Vermont in Burlington. “They go to the mountains. Or to oil.” But the new geochemical tools are turning geoscientists on to the charms of the planet’s slow parts.

Vasconcelos and his team used four different geochemical dating systems to flesh out the story of the Urucum plateau and its neighbor, the Santa Cruz. One took advantage of grains of the mineral manganese oxide that formed when the surface was first exposed to rain. The grains incorporated trace amounts of radioactive potassium, which has steadily decayed into argon ever since, providing a clock that shows the landscape formed 60 million to 70 million years ago. Another gauge of erosion comes from a set of isotopes—of helium, beryllium, and aluminum—that form when cosmic rays bombard surface rocks. The high abundances of these isotopes suggest the plateaus shed only 1 meter of material every 10 million years; the surrounding landscape, meanwhile, likely eroded at 100 times that rate, the group concludes. “They put together an erosional history that’s very compelling and exceptional,” Dietrich says. “I don’t know something so cleverly dated.”

The results raise a new question, says Jane Willenbring, a geomorphologist at the Scripps Institution of Oceanography in San Diego, California: “What makes landscapes persist for millions of years?” Until now, the oldest known surfaces had been found in parched regions like the Atacama Desert in Chile or the dry valleys of Antarctica, where water-driven erosion is slow. Paradoxically, the longevity of the Brazilian plateaus depends on water, says Ken Farley, a geochemist at the California Institute of Technology in Pasadena and a co-author of the paper. They are rich in a type of iron oxide called hematite, which reacts with quartz dissolved in rainwater to form tough blocks of rock that armor the soil. “It’s just iron oxide, nothing else there,” Farley says.

Similar plateaus protected by iron or silica probably exist throughout the slow lands. “Vasconcelos’s finding has the potential to motivate other researchers to come back to ancient and slow landforms,” says Fabiano Pupim, a geomorphologist at the Federal University of São Paulo in Diadema, Brazil.

One lure is the long histories they hold. “This surface has seen a lot of geochemical processes,” Vasconcelos says. “If something very drastic happened on the entire planet, a signature should be left.” He’s developing a technique to tease out rainfall and temperature histories from oxygen isotopes in goethite, an iron oxide that caps inselbergs in Brazil and Australia. These surfaces can also help scientists judge how often rare, powerful intraplate earthquakes strike a region. If the ancient cap is unbroken, any faults found in the rock below it must be associated with even older earthquakes, says Bierman, who recently used an isolated ancient plateau in South Africa to judge the seismic hazard to a nuclear power plant.

Inselbergs hold another gift: deposits of concentrated iron ore, protected from washing away by the impermeable surface. Left alone, the Urucum might exist for another 30 million years. But now, humanity is doing the job much faster. When the team visited earlier this decade, most of the plateau’s surface had been lost to mining, Farley says. “If we went back there, I’m not sure this material would be left.”

New post published on: https://www.livescience.tech/2019/06/27/dinosaur-age-landscapes-lurk-in-southern-hemisphere-science/

[shamelessballoonwizard]

#Dinosaur #dinosaurfossils #dinosauradventurepark #dinosauradventure #dinosauria #DinosaursPhotography #dinosaurnutrition #dinosaur #DinosaurRyuzaki #dinosaurbook #dinosauradventures #DinosaurDecor #dinosaurpartyplace #dinosaurcartoon #dinosaurustenpelastajat #DinosauriosSalas #dinosaurgift #dinosaurmadtoddler #dinosaurkigurumi #dinosaurcookies #dinosaurbichir #dinosaursatplay #dinosaurgiveaway #dinosaurgummies #dinosaurextinction #dinosaursareus #dinosaurdickband #dinosaurexhibit #DinosaurGames #dinosaurage #kent73 #tshirts #dkskustomgear https://www.instagram.com/p/Bt15ucuAJcC/?utm_source=ig_tumblr_share&igshid=b3fce07ys2he