• Home
  • About
  • advert
  • Contact us
Wednesday, March 3, 2021
  • Login
  • Register
Wac News
ADVERTISEMENT
  • Home
  • World News
    • Technology
    • sciences
    • Business
  • Game News
  • Lifestyle
  • Politics
  • Social
  • Sports
  • Shop
  • Contact US
No Result
View All Result
Wac News
No Result
View All Result
Wac News
No Result
View All Result
Home World

The World’s Largest Shield Volcano Isn’t What We Thought It Was

Jacque Colbert by Jacque Colbert
May 15, 2020
in World
402 21
0
The World’s Largest Shield Volcano Isn’t What We Thought It Was
586
SHARES
3.3k
VIEWS
Share on FacebookShare on Twitter

Beneath the cyan and cerulean waters of the Northwestern Hawaiian Islands lurks a leviathan. Its true extent has been hidden for a few years, however no extra. What geologists have discovered is a marvel – the most important, hottest recognized volcano on the planet.

 

Startlingly, it is greater than twice the dimensions of the earlier file holder, Mauna Loa on the Island of Hawai’i. And it might change our understanding of the huge Hawaiian-Emperor seamount chain of volcanoes that span the North Pacific Ocean.

The brand new record-breaker spreads throughout round 148,000 cubic kilometres (35,507 cubic miles) beneath the waves of the Papahānaumokuākea Marine National Monument, in comparison with Mauna Loa’s 74,000.

Solely comparatively small rocky pinnacles referred to as the Gardner Pinnacles break the floor, giving the volcano its title – Pūhāhonu, the Hawai’ian phrase for ‘turtle rising for breath’.

“We’re sharing with the science group and the general public that we ought to be calling this volcano by the title the Hawaiians have given to it, slightly than the western title for the 2 rocky small islands which might be the one above sea stage remnants of this as soon as majestic volcano,” said geologist Michael Garcia of the University of Hawai’i at Manoa.

Again within the 1970s, low-resolution bathymetric information recommended Pūhāhonu was round 54,000 cubic kilometres in dimension, then regarded as the biggest volcano earlier than a extra intensive survey of Mauna Loa revealed its true dimension.

 

Pūhāhonu solely regains its crown after intensive surveys of the area added high-resolution bathymetric and multibeam sonar information to our present understanding of the northwest Hawaiian Ridge, from which the volcano rises.

Geologists mixed this with petrologic analyses of rock samples retrieved from the volcano, refining quantity calculations and modelling based mostly on these parameters.

“It has been proposed that hotspots that produce volcano chains like Hawai’i bear progressive cooling over 1-2 million years after which die,” Garcia said.

“Nonetheless, we’ve realized from this examine that hotspots can bear pulses of soften manufacturing. A small pulse created the Halfway cluster of now extinct volcanoes and one other, a lot greater one created Pūhāhonu. This can rewrite the textbooks on how mantle plumes work.”

volc chonk(Garcia et al., EPSL, 2020)

Pūhāhonu is a shield volcano, between 12.5 and 14.1 million years previous, shaped by a single magma plume surging by the mantle. Over the millennia, this supply progressively constructed the volcano to a peak of 4,500 metres (14,764 toes) from its lowest level, spanning an space 275 kilometres (171 miles) lengthy and 90 kilometres (56 miles) large.

Chemical evaluation of rock collected from the volcano revealed a better focus of an olivine mineral referred to as forsterite than we have ever seen in a Hawaiian volcano. This mineral signifies magma on the upper finish of the temperature vary.

 

The calcium oxide content material within the forsterite allowed the group to deduce the depth at which it shaped, confirming that it did type in magma. Simulations allowed the group to calculate the stress at which the forsterite shaped, and the temperature.

In accordance with these calculations, the magma clocked in at 1,703 levels Celsius (3,097 levels Fahrenheit) – hotter than another Hawaiian basalt. This excessive temperature is mirrored within the volcano’s dimension, the researchers stated.

It is a powerful beast in its personal proper. However it additionally has necessary implications for our understanding of the processes that create these unbelievable formations.

“The Hawaiian-Emperor Chain is arguably the world’s finest studied floor expression of a mantle plume,” the researchers wrote in their paper.

“Nonetheless, new insights into its magmatic and thermal historical past proceed to be revealed as extra of the Hawaiian-Emperor Chain is mapped and sampled. These insights are offering a extra full understanding of the mechanics and thermal evolution of mantle plumes.”

The analysis has been revealed in Earth and Planetary Science Letters.

 

— to www.sciencealert.com

You might also like

‘For All Mankind’ take a giant leap into alternate world | Television

Can museums adapt to a changing world?

Meet this young, adventurous Braselton couple who plan to sail the world

Facebook Comments

Plugin Install : Subscribe Push Notification need OneSignal plugin to be installed.
Previous Post

Dr. Gulati makes an odd Business pact with Jaggu dada – The Kapil Sharma Show

Next Post

NHS coronavirus advisory board split over ditching government app | World news

Jacque Colbert

Jacque Colbert

Related Posts

‘For All Mankind’ take a giant leap into alternate world | Television
World

‘For All Mankind’ take a giant leap into alternate world | Television

by Jacque Colbert
March 3, 2021
Can museums adapt to a changing world?
World

Can museums adapt to a changing world?

by Jacque Colbert
March 3, 2021
Meet this young, adventurous Braselton couple who plan to sail the world
World

Meet this young, adventurous Braselton couple who plan to sail the world

by Jacque Colbert
March 3, 2021
The explosive (and inclusive) potential of NFTs in the creative world – TechCrunch
World

The explosive (and inclusive) potential of NFTs in the creative world – TechCrunch

by Jacque Colbert
March 2, 2021
World Games CEO expects no COVID limits, showcase for post-pandemic Alabama
World

World Games CEO expects no COVID limits, showcase for post-pandemic Alabama

by Jacque Colbert
March 2, 2021
Next Post

NHS coronavirus advisory board split over ditching government app | World news

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Donation

Your total amount is : 5.00 (Currency: USD)

Recommended

World War II hero who drove tank through gate of Dachau concentration camp dies at 95

World War II hero who drove tank through gate of Dachau concentration camp dies at 95

October 17, 2020
Social gathering limit adjustments begin Monday for Indiana counties

Social gathering limit adjustments begin Monday for Indiana counties

February 1, 2021

Navigation

Don't miss it

Eat — STOP — Eat
Business

Eat — STOP — Eat

March 3, 2021
Three Former Editors Turn Entrepreneurs
Business

Three Former Editors Turn Entrepreneurs

March 3, 2021
Northwestern professor featured on CBS’s “Mission Unstoppable”
Featured

Northwestern professor featured on CBS’s “Mission Unstoppable”

March 3, 2021
ED Elixir
Business

ED Elixir

March 3, 2021
Sue Bird, Alex Morgan launch ‘TOGETHXR’ sports media venture
Sports

Sue Bird, Alex Morgan launch ‘TOGETHXR’ sports media venture

March 3, 2021
High Cholesterol
Business

High Cholesterol

March 3, 2021

Receive our newsletters

User Information
Subscription
Newsletters

See all newsletters

Newsletters

Categories

  • Business
  • Featured
  • Game News
  • Lifestyle
  • Media
  • Politics
  • sciences
  • Social
  • Sports
  • Tech
  • Technology
  • Uncategorized
  • Videos
  • World
  • World News

Donate

Recent News

Eat — STOP — Eat

Eat — STOP — Eat

March 3, 2021
Three Former Editors Turn Entrepreneurs

Three Former Editors Turn Entrepreneurs

March 3, 2021
May 2020
M T W T F S S
 123
45678910
11121314151617
18192021222324
25262728293031
    Jun »
  • Home
  • About Us
  • Contact Us
  • Privacy & Policy

© 2020 Wac News

No Result
View All Result
  • Home
  • World News
    • Technology
    • sciences
    • Business
  • Game News
  • Lifestyle
  • Politics
  • Social
  • Sports
  • Shop
  • Contact US

© 2020 Wac News

Welcome Back!

Login to your account below

Forgotten Password? Sign Up

Create New Account!

Fill the forms below to register

All fields are required. Log In

Retrieve your password

Please enter your username or email address to reset your password.

Log In
✕
WAC NEWS

FREE
VIEW