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Heat flow measurements on a hydrothermally‐active, slow‐spreading ridge: The Escanaba Trough
Author(s) -
Abbott Dallas H.,
Morton Janet L.,
Holmes Mark L.
Publication year - 1986
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl013i007p00678
Subject(s) - trough (economics) , ridge , geology , hydrothermal circulation , sediment , heat flow , mid ocean ridge , pyrrhotite , hydrothermal vent , flow (mathematics) , geomorphology , petrology , geochemistry , seismology , paleontology , meteorology , mechanics , pyrite , thermal , physics , economics , macroeconomics
Maximum heat flow measurements at three locations in the sediment‐filled Escanaba Trough of the Gorda ridge exceed 1200 mW/m². At other ridge crests with thick sediment cover, heat flow values of this magnitude are accompanied by high temperature hydrothermal vent activity and massive sulfide deposition. A dredge haul from the southernmost high heat flow location recovered pyrrhotite, thereby confirming the presence of recent high temperature venting.