Matches in SemOpenAlex for { <https://semopenalex.org/work/W2188406988> ?p ?o ?g. }
Showing items 1 to 89 of
89
with 100 items per page.
- W2188406988 abstract "Oxygen isotope analyses carried out on quartz separates and whole rocks from the Trans-Atlantic Geotraverse (TAG) hydrothermal mound and the underlying stockwork zone document temperatures and processes within and beneath the mound. The mound is 25-40 m thick and consists of pyrite-rich, anhydrite-rich, and siliceous breccias, which nearly all contain quartz. The underlying pervasively quartz-veined stockwork is zoned, with quartz + paragonite + pyrite assemblages down to 101 mbsf, followed by paragonite + quartz + pyrite to 111 mbsf, and then chlorite + quartz + pyrite assemblage to the maximum depth penetrated, 125.7 mbsf. Basement beneath the eastern and western margins of the mound ranges from fresh basalt ( δ18O = 5.9‰), to basalt affected by low-temperature smectitic alteration (δ18O = 6.4‰-6.8‰), and partly to totally chloritized basalts ( δ18O = 2.1‰-4.5‰). Whole-rocks from the deep chloritic stockwork have δ18O values of 2.1‰-5.7‰, and chlorites have inferred values of 1‰3‰. Chloritization of basalt at the margins of the mound and at depth proceeded via reaction of basalt with variable mixtures of seawater and hydrothermal fluids, at temperatures of ~250° -350°C and at integrated water/rock mass ratios of at least 30 -300. Chloritization by early Mg-bearing hydrothermal fluids was followed by reaction of the chloritized rocks with Mgdepleted, alkali-enriched hydrothermal fluids having elevated Na/K ratios to produce the paragonite + quartz + pyrite assemblage characteristic of the main TAG stockwork. Stockwork quartz has δ18O = 7.9‰-11.7‰, indicating temperatures of 260°360°C in equilibrium with hydrothermal fluid (1.7‰). The maximum temperatures calculated for quartz yield temperatures identical to those of the vent fluids (360° -365°C). Scatter to higher δ18O and lower calculated temperatures are the results of precipitation of quartz during cooling of hydrothermal fluids and mixing with seawater in the subsurface, plus local 18O-enrichments of fluids via interactions with wallrocks. Generally higher δ18O values of quartz from the mound compared to the stockwork (12.3‰ ± 2.7‰ vs. 8.9‰ ± 0.9‰, respectively) reflect lower temperatures in the mound as the result of cooling of the mound by entrained seawater." @default.
- W2188406988 created "2016-06-24" @default.
- W2188406988 creator A5070030132 @default.
- W2188406988 creator A5086777794 @default.
- W2188406988 date "1998-02-01" @default.
- W2188406988 modified "2023-10-18" @default.
- W2188406988 title "Probing the TAG hydrothermal mound and stockwork: oxygen-isotopic profiles from deep ocean drilling" @default.
- W2188406988 cites W1534842457 @default.
- W2188406988 cites W1547907389 @default.
- W2188406988 cites W1952956830 @default.
- W2188406988 cites W1988978036 @default.
- W2188406988 cites W1994874475 @default.
- W2188406988 cites W2004625570 @default.
- W2188406988 cites W2018980847 @default.
- W2188406988 cites W2027100004 @default.
- W2188406988 cites W2031128482 @default.
- W2188406988 cites W2036943830 @default.
- W2188406988 cites W2060258817 @default.
- W2188406988 cites W2065008102 @default.
- W2188406988 cites W2068202901 @default.
- W2188406988 cites W2068425299 @default.
- W2188406988 cites W2081255315 @default.
- W2188406988 cites W2089494891 @default.
- W2188406988 cites W2090562875 @default.
- W2188406988 cites W2090757504 @default.
- W2188406988 cites W2091079709 @default.
- W2188406988 cites W2091175240 @default.
- W2188406988 cites W2103807190 @default.
- W2188406988 cites W2120532282 @default.
- W2188406988 cites W2132429552 @default.
- W2188406988 cites W2160980032 @default.
- W2188406988 cites W2163027341 @default.
- W2188406988 cites W2164220172 @default.
- W2188406988 cites W2186820512 @default.
- W2188406988 cites W2188121193 @default.
- W2188406988 cites W2379045883 @default.
- W2188406988 cites W2610172308 @default.
- W2188406988 doi "https://doi.org/10.2973/odp.proc.sr.158.222.1998" @default.
- W2188406988 hasPublicationYear "1998" @default.
- W2188406988 type Work @default.
- W2188406988 sameAs 2188406988 @default.
- W2188406988 citedByCount "16" @default.
- W2188406988 countsByYear W21884069882013 @default.
- W2188406988 countsByYear W21884069882016 @default.
- W2188406988 countsByYear W21884069882020 @default.
- W2188406988 crossrefType "book-chapter" @default.
- W2188406988 hasAuthorship W2188406988A5070030132 @default.
- W2188406988 hasAuthorship W2188406988A5086777794 @default.
- W2188406988 hasConcept C111368507 @default.
- W2188406988 hasConcept C127313418 @default.
- W2188406988 hasConcept C151730666 @default.
- W2188406988 hasConcept C156622251 @default.
- W2188406988 hasConcept C17409809 @default.
- W2188406988 hasConcept C191897082 @default.
- W2188406988 hasConcept C192562407 @default.
- W2188406988 hasConcept C21790881 @default.
- W2188406988 hasConcept C25197100 @default.
- W2188406988 hasConcept C2778188036 @default.
- W2188406988 hasConcept C544778455 @default.
- W2188406988 hasConcept C69883797 @default.
- W2188406988 hasConceptScore W2188406988C111368507 @default.
- W2188406988 hasConceptScore W2188406988C127313418 @default.
- W2188406988 hasConceptScore W2188406988C151730666 @default.
- W2188406988 hasConceptScore W2188406988C156622251 @default.
- W2188406988 hasConceptScore W2188406988C17409809 @default.
- W2188406988 hasConceptScore W2188406988C191897082 @default.
- W2188406988 hasConceptScore W2188406988C192562407 @default.
- W2188406988 hasConceptScore W2188406988C21790881 @default.
- W2188406988 hasConceptScore W2188406988C25197100 @default.
- W2188406988 hasConceptScore W2188406988C2778188036 @default.
- W2188406988 hasConceptScore W2188406988C544778455 @default.
- W2188406988 hasConceptScore W2188406988C69883797 @default.
- W2188406988 hasLocation W21884069881 @default.
- W2188406988 hasOpenAccess W2188406988 @default.
- W2188406988 hasPrimaryLocation W21884069881 @default.
- W2188406988 hasRelatedWork W1979887963 @default.
- W2188406988 hasRelatedWork W2068671622 @default.
- W2188406988 hasRelatedWork W2326420667 @default.
- W2188406988 hasRelatedWork W2478970649 @default.
- W2188406988 hasRelatedWork W2491227884 @default.
- W2188406988 hasRelatedWork W2495612077 @default.
- W2188406988 hasRelatedWork W2550279555 @default.
- W2188406988 hasRelatedWork W2750506484 @default.
- W2188406988 hasRelatedWork W3021131967 @default.
- W2188406988 hasRelatedWork W4214766198 @default.
- W2188406988 isParatext "false" @default.
- W2188406988 isRetracted "false" @default.
- W2188406988 magId "2188406988" @default.
- W2188406988 workType "book-chapter" @default.