Featured Research

from universities, journals, and other organizations

Easter Island: Volcanism Hotspot

Date:
May 4, 2009
Source:
The Geological Society of America
Summary:
Easter Island (aka Rapa Nui) is fascinating due to its remote location in the South Pacific Ocean and its cultural achievement, yielding hundreds of giant stone monoliths. Easter Island also stands out among intra-oceanic volcanic islands for certain remarkable geologic characteristics, such as its location close to the super-fast-spreading East Pacific Rise and above the Easter mantle plume.

Easter Island (aka Rapa Nui) is fascinating due to its remote location in the South Pacific Ocean and its cultural achievement, yielding hundreds of giant stone monoliths. Easter Island also stands out among intra-oceanic volcanic islands for certain remarkable geologic characteristics, such as its location close to the super-fast-spreading East Pacific Rise and above the Easter mantle plume.

Related Articles


Vezzoli and Acocella provide an overview of the geological and volcanotectonic evolution of Easter Island and discuss some general conceptual models of the formation and evolution of hot-spot oceanic islands.

Easter Island developed, in the past 0.7 million years, in two main stages. The first stage consisted of the build-up of three overlapping shield volcanoes, culminating in the formation of summit calderas.

The second stage was characterized by widespread fissural activity along the slopes of the shields. The reconstructed geologic features and volcanic evolution suggest that Easter Island is the expression of an end-member type of hot spot, characterized by low magmatic productivity, immature rift zones and scarce sector collapses, the opposite of what is found in the Hawaiian Islands.

This research was published by Luigina Vezzoli and Valerio Acocella (Universita degli Studi dell'Insubria, Dipartimento di Scienze Chimiche e Ambientali, via Valleggioin) the May-June issue of GSA Bulletin.


Story Source:

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


Journal Reference:

  1. Luigina Vezzoli and Valerio Acocella. Easter Island, SE Pacific: An end-member type of hotspot volcanism. Geological Society of America Bulletin, 2009; 121 (5-6): 869 DOI: 10.1130/B26470.1

Cite This Page:

The Geological Society of America. "Easter Island: Volcanism Hotspot." ScienceDaily. ScienceDaily, 4 May 2009. <www.sciencedaily.com/releases/2009/04/090429091226.htm>.
The Geological Society of America. (2009, May 4). Easter Island: Volcanism Hotspot. ScienceDaily. Retrieved February 27, 2015 from www.sciencedaily.com/releases/2009/04/090429091226.htm
The Geological Society of America. "Easter Island: Volcanism Hotspot." ScienceDaily. www.sciencedaily.com/releases/2009/04/090429091226.htm (accessed February 27, 2015).

Share This


More From ScienceDaily



More Earth & Climate News

Friday, February 27, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Death Toll from Afghan Avalanches Tops 200

Death Toll from Afghan Avalanches Tops 200

AFP (Feb. 27, 2015) More than 200 people have been killed in a series of avalanches triggered by heavy snowfall in Afghanistan. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com
France, Philippines Call for Agreement on Climate Change

France, Philippines Call for Agreement on Climate Change

Reuters - News Video Online (Feb. 27, 2015) The presidents of France and the Philippines issue a joint appeal for a binding agreement on climate change. Katie Sargent reports. Video provided by Reuters
Powered by NewsLook.com
The Big Melt: Antarctica's Retreating Ice

The Big Melt: Antarctica's Retreating Ice

AP (Feb. 27, 2015) From the ground in this extreme northern part of Antarctica, spectacularly white and blinding ice seems to extend forever. What can&apos;t be seen is the battle raging underfoot to re-shape Earth. Water is eating away at the Antarctic ice. (Feb. 27) Video provided by AP
Powered by NewsLook.com
Winter Storm Means Dangerous Driving in South

Winter Storm Means Dangerous Driving in South

AP (Feb. 26, 2015) A new winter storm is stretching across the south, making travel treacherous throughout the region. (Feb. 26) 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:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

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