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 28, 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 28, 2014).

Share This




More Earth & Climate News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Sea Turtle Hatchlings Emerge from Nest

Raw: Sea Turtle Hatchlings Emerge from Nest

AP (July 27, 2014) A live-streaming webcam catches loggerhead sea turtle hatchlings emerging from a nest in the Florida Keys. (July 27) Video provided by AP
Powered by NewsLook.com
Trees Could Save More Than 850 Lives Each Year

Trees Could Save More Than 850 Lives Each Year

Newsy (July 27, 2014) A national study conducted by the USDA Forest Service found that trees collectively save more than 850 lives on an annual basis. Video provided by Newsy
Powered by NewsLook.com
Phoenix Thunderstorm Creates Giant Wall of Dust

Phoenix Thunderstorm Creates Giant Wall of Dust

Reuters - US Online Video (July 26, 2014) A giant wall of dust slowly moves north over the Phoenix area after a summer monsoon thunderstorm. Mana Rabiee reports. Video provided by Reuters
Powered by NewsLook.com
Rare Lemur Among Baby Animals Debuted at Cleveland Zoo

Rare Lemur Among Baby Animals Debuted at Cleveland Zoo

Reuters - US Online Video (July 26, 2014) A rare baby Lemur is among several baby animals getting their public debut at a Cleveland zoo. Mana Rabiee reports. Video provided by Reuters
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