Featured Research

from universities, journals, and other organizations

Earth Structure: Fluid Factory In Solid Earth

Date:
March 3, 2009
Source:
Geological Society of America
Summary:
Earth is a giant fluid factory, according to new research. Earth scientists propose a new model for the nature and distribution of fluids from the core to Earth’s based on modern concepts of plate tectonics and argue that fluids within Earth play a critical role in constraining both the interior Earth dynamics and the evolution of the surface and near-surface environment.

Earth is a giant fluid factory, according to Santosh and coworkers, researchers from Japan. The authors propose a new model for the nature and distribution of fluids from the core to Earth’s based on modern concepts of plate tectonics and argue that fluids within Earth play a critical role in constraining both the interior Earth dynamics and the evolution of the surface and near-surface environment.

They are of the opinion that the global material circulation in our planet is controlled by a combination of processes that operate on the surface of Earth (plate tectonics), in the intermediate depths (plume tectonics), and at the core-mantle boundary region (anti-plate tectonics). They envisage that hot, rising plumes act as giant pipes connecting the deeper portions of Earth with the surface.

Santosh et al. propose that free fluid circulation within Earth occurs only within restricted zones, such as along regions were tectonic plates are subducted. The water subducted along the plate boundaries reaches up to the 410-660 km boundary termed as the mantle transition zone. Water stored in dense hydrous silicates in this region constitutes a huge water tank with a capacity of nearly five times the volume of the water in modern oceans.

The authors also propose that for the major part of Earth's history, the fluid transport was mostly one way -- from the outer core to the surface. The return flow of water probably started 750 million years ago and the penetration of water to deep levels through plate subduction provided adequate lubrication to transport some of the deeply subducted rocks back to the surface in the younger Earth. Such rocks returned from depth are identified from their ultrahigh-pressure mineral assemblages.


Story Source:

The above story is based on materials provided by Geological Society of America. Note: Materials may be edited for content and length.


Journal Reference:

  1. Santosh et al. A fluid factory in solid Earth. Lithosphere, 2009; 1 (1): 29 DOI: 10.1130/L2.1

Cite This Page:

Geological Society of America. "Earth Structure: Fluid Factory In Solid Earth." ScienceDaily. ScienceDaily, 3 March 2009. <www.sciencedaily.com/releases/2009/02/090226093425.htm>.
Geological Society of America. (2009, March 3). Earth Structure: Fluid Factory In Solid Earth. ScienceDaily. Retrieved July 30, 2014 from www.sciencedaily.com/releases/2009/02/090226093425.htm
Geological Society of America. "Earth Structure: Fluid Factory In Solid Earth." ScienceDaily. www.sciencedaily.com/releases/2009/02/090226093425.htm (accessed July 30, 2014).

Share This




More Earth & Climate News

Wednesday, July 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

In Virginia, the Rise of a New Space Coast

In Virginia, the Rise of a New Space Coast

AP (July 30, 2014) Every summer, tourists make the pilgrimage to Chincoteague Island, Va. to see wild ponies cross the Assateague Channel. But, it's the rockets sending to supplies to the International Space Station that are making this a year-round destination. (July 30) Video provided by AP
Powered by NewsLook.com
Climate Change Could Cost Billions, According To White House

Climate Change Could Cost Billions, According To White House

Newsy (July 29, 2014) A report from the White House warns not curbing greenhouse gas emissions could cost the U.S. billions. Video provided by Newsy
Powered by NewsLook.com
Climate Change Could Cost Billions According To White House

Climate Change Could Cost Billions According To White House

Newsy (July 29, 2014) A report from the White House warns not curbing greenhouse gas emissions could cost the U.S. billions. Video provided by Newsy
Powered by NewsLook.com
Jane Goodall Warns Great Apes Face Extinction

Jane Goodall Warns Great Apes Face Extinction

AFP (July 29, 2014) The world's great apes face extinction within decades, renowned chimpanzee expert Jane Goodall warned Tuesday in a call to arms to ensure man's closest relatives are not wiped out. Duration: 00:58 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins