Featured Research

from universities, journals, and other organizations

A Rising Force: New Study On Ancient Mantle Plumes

Date:
January 28, 2002
Source:
Geological Society Of America
Summary:
The subject of mantle plumes--bodies of hot buoyant material that rise through Earth’s mantle--has become increasingly popular as scientists explore new links between mantle plumes and other Earth processes.

Boulder, Colo. -- The subject of mantle plumes--bodies of hot buoyant material that rise through Earth’s mantle--has become increasingly popular as scientists explore new links between mantle plumes and other Earth processes.

What are the origin and evolution of plumes as they rise through the mantle? Has the number of plumes varied with time? What is their connection to uplift, rifting, and continental break up? How are large volumes of magma transported thousands of kilometers from the plume center?

The best way to answer many of these questions is to examine the entire record of mantle plumes. Much has been written about young mantle plumes, but those between 250 and 4000 million years old must also be considered in order to have a complete picture of what mantle plumes are and how they function.

Richard E. Ernst and Kenneth L. Buchan from the Geological Survey of Canada have addressed this need by editing a new book, Mantle Plumes: Their Identification Through Time, published by the Geological Society of America as Special Paper 352 (November 2001). The editors and authors hope this work will stimulate further research in identifying and finding mantle plumes--particularly those more than 250 million years old. The book evolved from research presented at a Geological Society of America symposium.

“Our book provides a road map for the identification of plumes in the older record,” Ernst said. “Given the importance of mantle plumes in the geological evolution of Earth and also Venus and Mars, we need to provide geoscientists with a more varied and better constrained repertoire of techniques for identifying and characterizing mantle plumes in the geological record.”

The process of plate tectonics--which is so important on Earth--is apparently absent from Mars and Venus.

“This means that on Venus and Mars we can study the nature and effect of plumes in an environment where complications due to continental breakup, drift, and collision are absent,” Ernst explained.

Chapters provide new information and fresh insight into the nature of mantle plumes including: how to identify ancient plumes and distinguish their magmatic products; research on Mesozoic and Cenozoic plumes that can be applied to identifying and understanding plumes throughout time; examination of plumes on Mars and Venus and implications for understanding plumes on Earth; how to find the centers of magma plumes; a global compilation of rifts associated with plumes; a compilation of mafic magmatic events throughout geologic time; and a set of criteria to discern plume-related events.


Story Source:

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


Cite This Page:

Geological Society Of America. "A Rising Force: New Study On Ancient Mantle Plumes." ScienceDaily. ScienceDaily, 28 January 2002. <www.sciencedaily.com/releases/2002/01/020128080101.htm>.
Geological Society Of America. (2002, January 28). A Rising Force: New Study On Ancient Mantle Plumes. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2002/01/020128080101.htm
Geological Society Of America. "A Rising Force: New Study On Ancient Mantle Plumes." ScienceDaily. www.sciencedaily.com/releases/2002/01/020128080101.htm (accessed July 31, 2014).

Share This




More Earth & Climate News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Big Waves In Arctic Ocean Threaten Polar Ice

Big Waves In Arctic Ocean Threaten Polar Ice

Newsy (July 30, 2014) Big waves in parts of the Arctic Ocean are unprecedented, mainly because they used to be covered in ice. Video provided by Newsy
Powered by NewsLook.com
Raw: Thousands Flocking to German Crop Circle

Raw: Thousands Flocking to German Crop Circle

AP (July 30, 2014) Thousands of people are trekking to a Bavarian farmer's field to check out a mysterious set of crop circles. (July 30) Video provided by AP
Powered by NewsLook.com
Amid Drought, UCLA Sees Only Water

Amid Drought, UCLA Sees Only Water

AP (July 30, 2014) A ruptured 93-year-old water main left the UCLA campus awash in 8 million gallons of water in the middle of California's worst drought in decades. (July 30) Video provided by AP
Powered by NewsLook.com
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

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