One of the mysteries behind the formation of diamonds has been solved, scientists said on Tuesday, opening up the possibility that the finding can help to locate deposits deep underground.
Scientists, led by an associate professor from the University of Southampton, said they now know why diamonds “erupt” – geologically speaking – on the Earth’s surface.
They discovered that the break-up of tectonic plates is the driving force for the generation and eruption of diamond-rich magmas from deep inside the Earth.
The discovery, published in the journal Nature, offers insight into locating diamond deposits.
Until now, scientists have not understood how diamonds reached the Earth’s surface.
Lead author Dr Tom Gernon, associate professor of Earth science at the University of Southampton, said: “The pattern of diamond eruptions is cyclical, mimicking the rhythm of the supercontinents, which assemble and break up in a repeated pattern over time.
“But previously we didn’t know what process causes diamonds to suddenly erupt, having spent millions or billions of years stashed away 150 kilometres beneath the Earth’s surface.”
The research examined the effects of global tectonic forces on these volcanic eruptions spanning the last billion years.
The team, which included researchers from the universities of Birmingham, Leeds, Potsdam, Portland State, Macquarie, Florence, and Queen’s in Ontario, examined the link between continental break-up and kimberlites, the rock formations that host diamonds.
The results showed that eruptions of most kimberlite volcanoes occurred 20 to 30 million years after the tectonic break-up of Earth’s super continents.
“We found that kimberlite eruptions tend to gradually migrate from the continental edges to the interiors over time at rates that are consistent across the continents,” said Dr Thea Hincks, senior research fellow at Southampton.
They then found that the Earth’s mantle: the convecting layer between the crust and core – was disrupted by rifting (or stretching) of the crust, even thousands of kilometres away.
Dr Stephen Jones, associate professor in Earth systems at Birmingham, and study co-author said: “We found that a domino effect can explain how continental break-up leads to formation of kimberlite magma.
“During rifting, a small patch of the continental root is disrupted and sinks into the mantle below, triggering a chain of similar flow patterns beneath the nearby continent.”
Dr Gernon said that this process led to the conditions needed for the creation of diamond-producing kimberlites.
“Remarkably, this process brings together the necessary ingredients in the right amounts to trigger just enough melting to generate kimberlites,” he said.
The scientists said that this understanding of this kimberlite migration helps them understand the locations and timings of past volcanic eruptions and therefore the insight into locating potential diamond deposits.
Day 5, Dubai Test: At a glance
Moment of the day Given the problems Sri Lanka have had in recent times, it was apt the winning catch was taken by Dinesh Chandimal. He is one of seven different captains Sri Lanka have had in just the past two years. He leads in understated fashion, but by example. His century in the first innings of this series set the shock win in motion.
Stat of the day This was the ninth Test Pakistan have lost in their past 11 matches, a run that started when they lost the final match of their three-Test series against West Indies in Sharjah last year. They have not drawn a match in almost two years and 19 matches, since they were held by England at the Zayed Cricket Stadium in Abu Dhabi in 2015.
The verdict Mickey Arthur basically acknowledged he had erred by basing Pakistan’s gameplan around three seam bowlers and asking for pitches with plenty of grass in Abu Dhabi and Sharjah. Why would Pakistan want to change the method that has treated them so well on these grounds in the past 10 years? It is unlikely Misbah-ul-Haq would have made the same mistake.
Ferrari 12Cilindri specs
Engine: naturally aspirated 6.5-liter V12
Power: 819hp
Torque: 678Nm at 7,250rpm
Price: From Dh1,700,000
Available: Now
Draw for Europa League last-16
Istanbul Basaksehir v Copenhagen; Olympiakos Piraeus v Wolverhampton Wanderers
Rangers v Bayer Leverkusen; VfL Wolfsburg v Shakhtar Donetsk; Inter Milan v Getafe
Sevilla v AS Roma; Eintracht Frankfurt or Salzburg v Basel; LASK v Manchester United
Match info
Uefa Champions League Group F
Manchester City v Hoffenheim, midnight (Wednesday, UAE)
UAE v Gibraltar
What: International friendly
When: 7pm kick off
Where: Rugby Park, Dubai Sports City
Admission: Free
Online: The match will be broadcast live on Dubai Exiles’ Facebook page
UAE squad: Lucas Waddington (Dubai Exiles), Gio Fourie (Exiles), Craig Nutt (Abu Dhabi Harlequins), Phil Brady (Harlequins), Daniel Perry (Dubai Hurricanes), Esekaia Dranibota (Harlequins), Matt Mills (Exiles), Jaen Botes (Exiles), Kristian Stinson (Exiles), Murray Reason (Abu Dhabi Saracens), Dave Knight (Hurricanes), Ross Samson (Jebel Ali Dragons), DuRandt Gerber (Exiles), Saki Naisau (Dragons), Andrew Powell (Hurricanes), Emosi Vacanau (Harlequins), Niko Volavola (Dragons), Matt Richards (Dragons), Luke Stevenson (Harlequins), Josh Ives (Dubai Sports City Eagles), Sean Stevens (Saracens), Thinus Steyn (Exiles)
The Sand Castle
Director: Matty Brown
Stars: Nadine Labaki, Ziad Bakri, Zain Al Rafeea, Riman Al Rafeea
Rating: 2.5/5
The specs: 2018 Ducati SuperSport S
Price, base / as tested: Dh74,900 / Dh85,900
Engine: 937cc
Transmission: Six-speed gearbox
Power: 110hp @ 9,000rpm
Torque: 93Nm @ 6,500rpm
Fuel economy, combined: 5.9L / 100km
FIXTURES
All times UAE ( 4 GMT)
Friday
Saint-Etienne v Montpellier (10.45pm)
Saturday
Monaco v Caen (7pm)
Amiens v Bordeaux (10pm)
Angers v Toulouse (10pm)
Metz v Dijon (10pm)
Nantes v Guingamp (10pm)
Rennes v Lille (10pm)
Sunday
Nice v Strasbourg (5pm)
Troyes v Lyon (7pm)
Marseille v Paris Saint-Germain (11pm)
Match info
Uefa Champions League Group H
Juventus v Valencia, Tuesday, midnight (UAE)
Company profile
Date started: 2015
Founder: John Tsioris and Ioanna Angelidaki
Based: Dubai
Sector: Online grocery delivery
Staff: 200
Funding: Undisclosed, but investors include the Jabbar Internet Group and Venture Friends
Key facilities
- Olympic-size swimming pool with a split bulkhead for multi-use configurations, including water polo and 50m/25m training lanes
- Premier League-standard football pitch
- 400m Olympic running track
- NBA-spec basketball court with auditorium
- 600-seat auditorium
- Spaces for historical and cultural exploration
- An elevated football field that doubles as a helipad
- Specialist robotics and science laboratories
- AR and VR-enabled learning centres
- Disruption Lab and Research Centre for developing entrepreneurial skills
Winners
Ballon d’Or (Men’s)
Ousmane Dembélé (Paris Saint-Germain / France)
Ballon d’Or Féminin (Women’s)
Aitana Bonmatí (Barcelona / Spain)
Kopa Trophy (Best player under 21 – Men’s)
Lamine Yamal (Barcelona / Spain)
Best Young Women’s Player
Vicky López (Barcelona / Spain)
Yashin Trophy (Best Goalkeeper – Men’s)
Gianluigi Donnarumma (Paris Saint-Germain and Manchester City / Italy)
Best Women’s Goalkeeper
Hannah Hampton (England / Aston Villa and Chelsea)
Men’s Coach of the Year
Luis Enrique (Paris Saint-Germain)
Women’s Coach of the Year
Sarina Wiegman (England)
MATCH INFO
Fixture: Thailand v UAE, Tuesday, 4pm (UAE)
TV: Abu Dhabi Sports
Specs
Engine: Electric motor generating 54.2kWh (Cooper SE and Aceman SE), 64.6kW (Countryman All4 SE)
Power: 218hp (Cooper and Aceman), 313hp (Countryman)
Torque: 330Nm (Cooper and Aceman), 494Nm (Countryman)
On sale: Now
Price: From Dh158,000 (Cooper), Dh168,000 (Aceman), Dh190,000 (Countryman)
The specs
Engine: four-litre V6 and 3.5-litre V6 twin-turbo
Transmission: six-speed and 10-speed
Power: 271 and 409 horsepower
Torque: 385 and 650Nm
Price: from Dh229,900 to Dh355,000
The%20specs
%3Cp%3E%3Cstrong%3EEngine%3A%3C%2Fstrong%3E%201.5-litre%204-cylinder%3Cbr%3E%3Cstrong%3ETransmission%3A%20%3C%2Fstrong%3ECVT%3Cbr%3E%3Cstrong%3EPower%3A%20%3C%2Fstrong%3E119bhp%3Cbr%3E%3Cstrong%3ETorque%3A%20%3C%2Fstrong%3E145Nm%3Cbr%3E%3Cstrong%3EPrice%3A%20%3C%2Fstrong%3EDh%2C89%2C900%20(%2424%2C230)%3Cbr%3E%3Cstrong%3EOn%20sale%3A%20%3C%2Fstrong%3Enow%3C%2Fp%3E%0A
UAE currency: the story behind the money in your pockets
Veil (Object Lessons)
Rafia Zakaria
Bloomsbury Academic
UAE squad
Esha Oza (captain), Al Maseera Jahangir, Emily Thomas, Heena Hotchandani, Indhuja Nandakumar, Katie Thompson, Lavanya Keny, Mehak Thakur, Michelle Botha, Rinitha Rajith, Samaira Dharnidharka, Siya Gokhale, Sashikala Silva, Suraksha Kotte, Theertha Satish (wicketkeeper) Udeni Kuruppuarachchige, Vaishnave Mahesh.
UAE tour of Zimbabwe
All matches in Bulawayo
Friday, Sept 26 – First ODI
Sunday, Sept 28 – Second ODI
Tuesday, Sept 30 – Third ODI
Thursday, Oct 2 – Fourth ODI
Sunday, Oct 5 – First T20I
Monday, Oct 6 – Second T20I
How to wear a kandura
Dos
- Wear the right fabric for the right season and occasion
- Always ask for the dress code if you don’t know
- Wear a white kandura, white ghutra / shemagh (headwear) and black shoes for work
- Wear 100 per cent cotton under the kandura as most fabrics are polyester
Don’ts
- Wear hamdania for work, always wear a ghutra and agal
- Buy a kandura only based on how it feels; ask questions about the fabric and understand what you are buying
A timeline of the Historical Dictionary of the Arabic Language
- 2018: Formal work begins
- November 2021: First 17 volumes launched
- November 2022: Additional 19 volumes released
- October 2023: Another 31 volumes released
- November 2024: All 127 volumes completed
European arms
Known EU weapons transfers to Ukraine since the war began: Germany 1,000 anti-tank weapons and 500 Stinger surface-to-air missiles. Luxembourg 100 NLAW anti-tank weapons, jeeps and 15 military tents as well as air transport capacity. Belgium 2,000 machine guns, 3,800 tons of fuel. Netherlands 200 Stinger missiles. Poland 100 mortars, 8 drones, Javelin anti-tank weapons, Grot assault rifles, munitions. Slovakia 12,000 pieces of artillery ammunition, 10 million litres of fuel, 2.4 million litres of aviation fuel and 2 Bozena de-mining systems. Estonia Javelin anti-tank weapons. Latvia Stinger surface to air missiles. Czech Republic machine guns, assault rifles, other light weapons and ammunition worth $8.57 million.
Tips to keep your car cool
- Place a sun reflector in your windshield when not driving
- Park in shaded or covered areas
- Add tint to windows
- Wrap your car to change the exterior colour
- Pick light interiors - choose colours such as beige and cream for seats and dashboard furniture
- Avoid leather interiors as these absorb more heat
