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Laccoliths(?) and small volcanoes on the flank of the East Pacific Rise

1983; Geological Society of America; Volume: 11; Issue: 12 Linguagem: Inglês

10.1130/0091-7613(1983)11 2.0.co;2

1943-2682

Peter Lonsdale,

earthquake and tectonic studies

Research Article| December 01, 1983 Laccoliths(?) and small volcanoes on the flank of the East Pacific Rise Peter Lonsdale Peter Lonsdale 1University of California, San Diego, Marine Physical Laboratory of the Scripps Institution of Oceanography, La Jolla, California 92093 Search for other works by this author on: GSW Google Scholar Author and Article Information Peter Lonsdale 1University of California, San Diego, Marine Physical Laboratory of the Scripps Institution of Oceanography, La Jolla, California 92093 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1983) 11 (12): 706–709. https://doi.org/10.1130/0091-7613(1983)11 2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Peter Lonsdale; Laccoliths(?) and small volcanoes on the flank of the East Pacific Rise. Geology 1983;; 11 (12): 706–709. doi: https://doi.org/10.1130/0091-7613(1983)11 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 Clusters of low circular domes and discs, each a few hundred metres high and a few kilometres across, have been mapped but not sampled during a Seabeam traverse of old (9–18 m.y.) oceanic crust at (at 19–20°S in the South Pacific, where they replace the typical lineated fault-block terrain for several hundred square kilometres. The landforms are probably produced by laccolith intrusion beneath a sediment cover in an off-axis volcanic province. Their overall shapes are distinctly different from the small volcanic shields that also dot the rise flank, and from small satellite cones that are abundant on archipelagic aprons, though some of the domes do bear small cratered shields and cones on their peripheries, and even shallow summit depressions. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.