Piecing together 'tectonic jigsaw' shows ancient earthquakes shaped the mighty Murray River

© Provided by ABC NEWS The Barmah Millewa Forest in southern NSW was created by the series of earthquakes on the Cadell Fault. (Supplied: MDBA)

The modern course of the Murray River was carved 70,000 years ago when a series of earthquakes and aftershocks that went for years lifted the ground along a fault line in southern NSW.

It was an event local Dreaming says was the rainbow serpent’s tail flicking.

The 80-kilometre Cadell fault line stretches from Deniliquin through Echuca, to Rochester in northern Victoria.

GeoScience Australia earthquake geologist Daniel Clark said the release of energy from that ancient event was 30 times that seen in the Victorian earthquake last week.

“The Riverine plain is a fairly flat space normally and 70,000 years ago the Murray River carried on happily westward through Mathoura,” Dr Clark said.

“A series of six very large earthquakes events formed the fault scar, which is up to 10 to 15 metres high at Mathoura.”

He said studies piecing together the history of the tectonic jigsaw indicates the earthquakes occurred every 5,000 to 10,000 years, ultimately diverting the Murray through Echuca.

“The really interesting thing about his process is that there was a lot of partial damming and ponding involved in this earthquake activity so the Barmah Forest, the largest red gum forest in Australia, formed as a result of this tectonic activity.”

Mick Barlow from Moama said the impact on the landscape could be seen while driving between Mathoura and Deniliquin, as the highway was on the uplifted land.

“As you are driving along the Cobb Highway and look out to the east, you’ll find the tree level is below your eyesight,” he said.

“You can see this escarpment along the edge of the Gulpa Creek.

“It has provided us with a slope of land west of the Cadell Fault where natural irrigation was easy to set up once the water was lifted out of the river.”

Dreaming tells of serpent tail flicking

Chief executive of the Yorta Yorta Nation Aboriginal Corporation Monica Morgan said the creation of Dhungula, or the Murray River, is told through Dreaming stories.

“The rainbow serpent was called back and the curves and bends that we know as Dhungula came back and during that process flicked their tail,” Ms Morgan said.

“The flicking of the tail created a new vibration in the country which caused the change in that particular part of the river area.

“The story also goes that after about 25,000 years there was a call by our mob to all the Nations because there was a build-up of all the water to the north.

“So our story is that our mobs all got together and over a period of time created a channel which released some of the water.

“Another flick of the tail around 8,000 years ago and the water then turned back south.”

She said there was a special connection to the forest and wetlands.

“It is, and was, always a food bowl for Yorta Yorta people and our clans and mobs from around the area.

“We have great big ceremonial grounds that people would come to from hundreds of miles away and share with us around the season.”

Fault dormant for thousands of years

Daniel Clark, earthquake geologist with GeoScience Australia, said while there were thousands of fault lines across the country, we only know of a few hundred that are active and producing earthquakes now.

“A fault is a line of weakness within the earth’s crust, it doesn’t necessarily mean that it is seismically active but earthquakes happen on fault lines,” he said.

“We would consider the [Cadell] Fault to be dormant because it hasn’t had one of these earthquakes for the last 20,000 years but that does not mean that we can forget about it.

“Critical infrastructure like dams, power stations and hospitals certainly have to take into account these large events.

“For instance, the Hume Dam would be built to withstand a one-in-10,000-year recurrence earthquake event, which is at the sort of frequency that the Cadell Fault would generate.”

Internet Explorer Channel Network
News Related


YB tut sich selber weh

Die Young Boys rappeln sich nach einem Fehlstart gegen Villarreal zwar auf, doch zu mehr als dem zwischenzeitlichen Anschlusstreffer reicht es nicht. Nach dem 1:4 muss sich YB ärgern. © ... Read more »

Bayern werden zwei Tore aberkannt – dennoch gewinnen sie 4:0

Diashow ein Beste Torschützen der Champions League (zuvor Europapokal der Landesmeister) 1. Cristiano Ronaldo Tore: 137 Spiele: 179 Clubs: Sporting Lissabon, Real Madrid, Juventus Turin, Manchester United 2. Lionel Messi ... Read more »

An ‘intoxicated' ex-employee shut down a Kansas water system. Now he's going to jail.

A former employee of a rural central Kansas water system pleaded guilty Wednesday to remotely shutting down the plant in March 2019 after a federal prosecutor described how the man ... Read more »

Minneapolis man admits to impersonating FBI agent in phony terrorism probe

A Minneapolis man pleaded guilty Wednesday to impersonating an FBI agent, including making up a phony name and badge number and falsely telling a victim that he was investigating the ... Read more »

The Boring Company gets approval for Las Vegas public transportation system

On Wednesday, Clark County Commissioners voted unanimously to approve plans for The Boring Company’s Vegas Loop system. With the decision, the Elon Musk venture moves one step closer to the ... Read more »

The Orionid Meteor Shower Peaks This Week—Here's How to Watch It Light up the Sky

© Haitong Yu – Getty Images Look up—or you just might miss the peak of October’s meteor shower. The annual Orionid meteor shower is well underway and will be visible ... Read more »

Spy Kids star Alexa PenaVega's son, two, lost his finger in traumatic accident

Alexa PenaVega revealed her two-year-old son, Kingston, suffered an accident that resulted in him losing the tip of his finger. The Spy Kids star, 33, recounted the traumatic experience via ... Read more »

Princess Grace's grandson Pierre Casiraghi becomes ambassador for Dior

A grandson of Princess Grace has become the latest model for fashion house Dior, described as “an icon of elegance”. Pierre Casiraghi, 34, is the youngest son of Princess Caroline ... Read more »

Man charged in nearly 30-year-old suburban Chicago slaying

NILES, Ill. (AP) — A man has been arrested and charged with first-degree murder in the nearly 30-year-old murder of a woman at a suburban Chicago YMCA. DNA evidence was ... Read more »

Parkland shooter pleads guilty, says 'it brings me nightmares'

Nikolas Cruz pleaded guilty Wednesday to 17 counts of first-degree murder and 17 counts of attempted first-degree murder for killing 17 and injuring 17 others in the Parkland, Florida, school ... Read more »

First look at the brand-new Capital One Lounge at Dallas-Fort Worth International Airport

© Provided by The Points Guy MSN has partnered with The Points Guy for our coverage of credit card products. MSN and The Points Guy may receive a commission from ... Read more »

UK secures deals with Merck, Pfizer for COVID-19 anti-viral pills

The United Kingdom has announced Wednesday that it has deals with Pfizer and Merck for each company’s COVID-19 antiviral drug, as reported by Reuters. © Merck’s Media for Press UK ... Read more »

This Republican wants to start 'GOP 2.0' -- without Donald Trump

Something very interesting happened in New Hampshire this week that you might have missed: The Georgia Republican lieutenant governor made a trip to the state touting his plan to re-birth ... Read more »

'Use your soapbox': Activists urge Biden to step up voting rights push as latest bill fails in Senate

WASHINGTON – President Joe Biden has called the fight for voting rights “the most significant test of our democracy since the Civil War.” But nine months into his presidency, Biden and Democrats have ... Read more »

Blinken hails Colombia partnership but seeks shift from security focus

US Secretary of State Antony Blinken on Wednesday praised Colombia’s right-wing leader as an ally on issues such as migration, even as he called for a demilitarization of US alliances ... Read more »

Former CNN anchor Candy Crowley's alleged illegal tenants assaulted doc: suit

Dr. Charles Starke claims he was beaten up by partying neighbors who former CNN anchor Candy Crowley and her son illegally allowed to live in her Financial District apartment, new ... Read more »

The HUGE changes coming to the popular Viennetta ice cream cake that has nostalgic foodies delighted

Streets has added a new variant to its classic Viennetta - Viennetta NeapolitanThe dessert features vanilla, chocolate and strawberry with layers of choc curlsProduct is set to land in the freezer aisles in Coles supermarket stores for $6.60Coles has sent fans into meltdown after unveiling new mini 'Vienna' sticksThe vanilla flavoured ice cream sticks are inspired by the 80s classic dessert Read more »

Parents in Michigan sue to stop AG Garland going after them over protests

Attorney General Merrick Garland issued a memo saying the FBI would get involved in reports of violent acts against school personnel. REUTERS/Ken Cedeno/File Photo A group of parents from a ... Read more »

New York's Orthodox neighborhoods lagging in COVID shots, records show

Orthodox Jewish neighborhoods have seen low COVID-19 vaccination rates. Gregory P. Mango The Big Apple’s major ultra-Orthodox Jewish neighborhoods are now among the biggest laggards in the city’s coronavirus vaccination ... Read more »

James Harden focused on championship as monster Nets contract looms

It says a lot about James Harden that — despite being picked by the NBA GMs as the best shooting guard and tabbed by the league itself as one of ... Read more »

Ramona Singer Reveals When She'd Leave 'RHONY' (Exclusive)

© et Ramona Singer doesn’t plan to hand her apple into Bravo anytime soon. “As long as I have fun doing the show, I’m happy to come back,” the Real Housewives ... Read more »

Dorinda Medley Admits to 'a Couple Disruptions' With Vicki Gunvalson on All-Star 'Housewives' Show (Exclusive)

© et Dorinda Medley is offering Housewives superfans quite the tease of Peacock’s next all-star series! “Listen, everybody misses Bluestone Manor, right?” the Real Housewives of New York City alum asks of ET, speaking ... Read more »

Giant ram head statues found on 'Avenue of Sphinxes' in Egypt

© Provided by Live Science An entire avenue of ram headed statues connected Karnak Temple to Luxor Temple. Three giant statues of ram heads — at least one of which ... Read more »

'DoJ drug report clears Duterte'

THE Department of Justice’s (DoJ) report on the 52 deaths related to the government’s war on illegal drugs will absolve President Rodrigo Duterte of any wrongdoing, Palace spokesman Harry Roque ... Read more »

Nestlé Toll House's New Peppermint Hot Cocoa Morsels Will Add Holiday Flavor to Any Sweets

Nestlé Toll House first introduced its Morsels & More line in January 2021 as a way to incorporate more than just the classic chocolate chips into your baked goods. Since ... Read more »

Top advocates spar in SC over resumption of physical hearing

© Provided by The Times of India NEW DELHI: Senior advocates sparred on Wednesday over the efficacy of the SC’s decision to resume full physical hearing two days a week ... Read more »

PM Modi tears into SP before UP polls, calls it ‘parivarwadi'

© Provided by The Times of India KUSHINAGAR: Ahead of the UP assembly polls early next year, PM Narendra Modi launched a scathing attack on the previous Samajwadi Party government ... Read more »

Dalit held for theft in thana dies in custody, five cops suspended

© Provided by The Times of India AGRA: A 30-year-old Dalit sanitation worker, Arun Valmiki, died in police custody on Tuesday, a day after he was nabbed by the Agra ... Read more »

India, Brazil saw biggest jump in heat-related deaths in 2018-19

© Provided by The Indian Express Almost 3.45 lakh people above 65 years died of heat-related causes in 2019, more than 80.6 per cent of the 2000-05 average, in a ... Read more »

Vic has 2232 COVID-19 cases, 12 deaths

Victoria has recorded 2232 new locally acquired COVID-19 cases and 12 deaths on the last day of Melbourne’s long-running sixth lockdown. © James Ross/AAP PHOTOS Victoria has recorded more than ... Read more »

Victoria hits vaccine milestone as lockdown to end tonight

Victoria has officially reached its 70 per cent vaccine milestone this morning ahead of lockdown lifting tonight. A total of 70.51 per cent of Victorians over 16 are now fully ... Read more »

Man seriously burned after explosion in Newcastle unit

A man has suffered serious burns after an explosion inside a Newcastle unit. Four paramedic crews and a specialist medical team rushed to the apartment in Darby Street, Cooks Hill, ... Read more »

Meghan Markle: Prince Harry and I Were 'Overwhelmed' After Lili's Birth

© Provided by US Weekly Meghan Markle Prince Harry I Were Overwhelmed After Lilis Birth Sharing her truth. Meghan Markle opened up about her experiences as a parent in an ... Read more »

In Trubschachen werden beide glücklich: Milch für Kälber – und für Menschen

Auf dem Hof Ober Gummen in Trubschachen BE bleiben Kühe und Kälber zusammen. So gibt es Milch mit ganz viel Herz. © Bereitgestellt von Blick Milch für Kälber – und ... Read more »

JoJo Siwa and GF Kylie Prew Split After Less Than 1 Year of Dating

© Provided by US Weekly Dancing With the Stars JoJo Siwa and Kylie Prew Call It Quits Tear Going their separate ways. After less than one year of dating, JoJo ... Read more »

WATCH LIVE: Eric Adams squares off against Curtis Sliwa in first NYC mayoral debate

After months of sparring with each other from a distance, mayoral hopefuls Eric Adams and Curtis Sliwa are set to slug it out on the debate stage for the first ... Read more »

Daphne Oz's Low-Point Weight Watchers' Chicken Skillet Dinner Looks Incredible

Imagine you’ve been selected as a contestant on Family Feud, and are posed with the challenge, “Name three meats that people call ‘juicy’ and ‘tender.'” Chances are, you might ring ... Read more »

Texas nurse convicted of capital murder for killing patients with air injections

A nurse in Texas was convicted of capital murder Tuesday. © Provided by Washington Examiner Prosecutors said William Davis, 37, killed four patients recovering from heart surgery by injecting air ... Read more »

Epic Games Partners With Indie Studios Eyes Out and Spry Fox

© Courtesy of Spry Fox Spry Fox Concept Art Epic Games Publishing revealed Wednesday its new independent studio partners: Eyes Out and Spry Fox. The partners, both U.S. based development ... Read more »

Sir David Amess ‘killer' worked at top London hospital & dreamed of being doctor

THE terror suspect held over the murder of Sir David Amess worked at a top London hospital, it was reported. Ali Harbi Ali also reportedly dreamed of becoming doctor but ... Read more »