Waxing and waning volcanism along the East Pacific Rise on a millennium time scale

Abstract

Research Article| July 01, 2003 Waxing and waning volcanism along the East Pacific Rise on a millennium time scale Marie-Hélène Cormier; Marie-Hélène Cormier 1Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA Search for other works by this author on: GSW Google Scholar William B.F. Ryan; William B.F. Ryan 1Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA Search for other works by this author on: GSW Google Scholar Anjana K. Shah; Anjana K. Shah 1Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA Search for other works by this author on: GSW Google Scholar Wen Jin; Wen Jin 1Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA Search for other works by this author on: GSW Google Scholar Albert M. Bradley; Albert M. Bradley 2Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA Search for other works by this author on: GSW Google Scholar Dana R. Yoerger Dana R. Yoerger 2Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Marie-Hélène Cormier 1Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA William B.F. Ryan 1Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA Anjana K. Shah 1Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA Wen Jin 1Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA Albert M. Bradley 2Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA Dana R. Yoerger 2Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA Publisher: Geological Society of America Received: 05 Sep 2002 Revision Received: 12 Mar 2003 Accepted: 19 Mar 2003 First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2003) 31 (7): 633–636. https://doi.org/10.1130/0091-7613(2003)031<0633:WAWVAT>2.0.CO;2 Article history Received: 05 Sep 2002 Revision Received: 12 Mar 2003 Accepted: 19 Mar 2003 First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Marie-Hélène Cormier, William B.F. Ryan, Anjana K. Shah, Wen Jin, Albert M. Bradley, Dana R. Yoerger; Waxing and waning volcanism along the East Pacific Rise on a millennium time scale. Geology 2003;; 31 (7): 633–636. doi: https://doi.org/10.1130/0091-7613(2003)031<0633:WAWVAT>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Microbathymetric maps of the southern East Pacific Rise reveal subtle field relations between volcanic features and provide new insight on seafloor spreading processes. Along one of the shallowest and broadest sections of ridge at 17°28′S, lavas have erupted from a fissure system and flooded the axis through a network of lava tubes and lava channels. Along the neighboring ridge segment at 18°15′S, the axial area has subsided and formed a broad tectonized trough. A swath of newly accreted crust has since widened that trough; late-stage volcanism consists of small circular pillow mounds. We propose that these contrasting eruptive styles reflect the waxing and waning phases of a common magmatic evolution spanning a few millennia. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.