Changes in the hydrothermal system at Loihi Seamount after the formation of Pele's pit in 1996

Research Article| May 01, 1998 Changes in the hydrothermal system at Loihi Seamount after the formation of Pele's pit in 1996 Alicé S. Davis; Alicé S. Davis 1Monterey Bay Aquarium Research Institute, 7700 Sandholdt Road, Moss Landing, California 95039-0628 Search for other works by this author on: GSW Google Scholar David A. Clague David A. Clague 1Monterey Bay Aquarium Research Institute, 7700 Sandholdt Road, Moss Landing, California 95039-0628 Search for other works by this author on: GSW Google Scholar Author and Article Information Alicé S. Davis 1Monterey Bay Aquarium Research Institute, 7700 Sandholdt Road, Moss Landing, California 95039-0628 David A. Clague 1Monterey Bay Aquarium Research Institute, 7700 Sandholdt Road, Moss Landing, California 95039-0628 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1998) 26 (5): 399–402. https://doi.org/10.1130/0091-7613(1998)026<0399:CITHSA>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Alicé S. Davis, David A. Clague; Changes in the hydrothermal system at Loihi Seamount after the formation of Pele's pit in 1996. Geology 1998;; 26 (5): 399–402. doi: https://doi.org/10.1130/0091-7613(1998)026<0399:CITHSA>2.3.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 Sulfide and sulfate minerals recovered from Loihi Seamount during PISCES V submersible dives in October 1996 are the first occurrence of high-temperature hydrothermal mineralization documented for ocean island volcanoes. Millimeter- to centimeter-sized particles recovered in talus deposits on the north rim of the newly formed Pele's pit consist of aggregates of pyrite, marcasite (?), pyrrhotite, wurtzite, and barite. The barite occurs as single, clear, euhedral crystals or as acicular, radial crystal clusters on sulfide or rock fragments. The mineral assemblage and the composition of the sulfide phases are similar to those of hydrothermal sulfide from mid-ocean spreading centers. The sulfide assemblage confirms the presence of high-temperature fluids (>250 °C) in the Loihi hydrothermal system. The sulfide samples are not pieces of broken chimney or basal mound structures, or stockwork from lower levels in the hydrothermal system. The euhedral crystals and homogeneous compositions suggest rapid precipitation from a high-temperature plume injected into cold seawater along fractures and fissures that define the north wall of the new pit crater formed during the seismic swarm in July and August 1996. 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.