FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W47466666> ?p ?o ?g. }

• W47466666 abstract "Siliceous sinters are hot-spring deposits that initially form as silica deposits from discharging alkali chloride thermal fluids. The biotic and abiotic components present in the path of the hot-spring discharge channels are subject to rapid mineralization by the precipitating silica. Hydrothermal systems have been implicated as possible sites for the origin and evolution of early life. Therefore, sinters may serve as analogs for recording environmental conditions akin to those that prevailed on Earth millions of years ago. However, with time, sinters also undergo a series of silica phase transformations and other post-depositional overprints. These changes must be recognized if paleoenvironmental information is to be successfully extracted from the sinter archive. In this study, four sinter deposits were examined with different plate tectonic settings and climatic histories. They have a range of 14C AMS ages: (1) the ~ 6300 years BP sinter from Steamboat Springs, Nevada. U.S.A., (2) the ~ 1920 years BP sinter from Opal Mound. Roosevelt Hot Springs, Utah. U.S.A., (3) the ~ 450 years BP deposit from Sinter Island, Taupo Volcanic Zone, New Zealand, and (4) a 2 year old Wairakei drain sinter placed within a fumarole at Orakei Korako, Taupo Volcanic Zone, New Zealand. The sinter transplanted into the fumarole yielded only opal-A and quartz mineralogies after the field experiment; whereas, the other three sinters have captured the entire diagenetic continuum of siliceous mineral phases, namely opal-A. opal-A/CT, opal-CT. opal-C. quartz ?? moganite. Collectively, these sinter deposits enabled mineralogic, morphologic, and crystallographic diagenetic pathways to be mapped at the submicron scale using a variety of analytical techniques. Regardless of location, mineralogical transformations were almost identical. The accompanying morphological changes consist of a repeating pattern of nano-micro-nano-sized silica particle changes, and follow the Ostwald step rule. Each silica phase exhibits a particular morphology, namely opal-A spheres, opal-A/CT nanospheres, opal-CT bladed lepispheres, opal-C nanostructures, and quartz micro-crystals. The length of time required for each sinter to reach mineralogical maturity (i.e., become quartzose) varies among deposits, and can be attributed to differences in both environmental and diagenetic post-depositional events. Diagenesis is controlled by shifts in micro-scale physico-chemical conditions that are not time dependant. In all sinters, mineralogic transformations precede morphologic modifications, and both are driven by crystallographic (i.e., internal mineral structure) changes. During diagenetic transformations, the crystal axes of opal-CT, opal-C and incipient quartz develop incrementally. The arrangement of nano- and micron-scale morphological features in the sinter matrix for each silica phase is not random but represents emerging orientations of future quartz crystal faces. Post-depositional events also are recorded within sinters (e.g., tephra deposition, faulting, lowering of…" @default.
• W47466666 created "2016-06-24" @default.
• W47466666 creator A5024075982 @default.
• W47466666 date "2007-01-01" @default.
• W47466666 modified "2023-09-28" @default.
• W47466666 title "Diagenesis of siliceous sinter deposits in the U.S.A. and New Zealand" @default.
• W47466666 hasPublicationYear "2007" @default.
• W47466666 type Work @default.
• W47466666 sameAs 47466666 @default.
• W47466666 citedByCount "0" @default.
• W47466666 crossrefType "dissertation" @default.
• W47466666 hasAuthorship W47466666A5024075982 @default.
• W47466666 hasConcept C109007969 @default.
• W47466666 hasConcept C111696902 @default.
• W47466666 hasConcept C120806208 @default.
• W47466666 hasConcept C126753816 @default.
• W47466666 hasConcept C127313418 @default.
• W47466666 hasConcept C130452526 @default.
• W47466666 hasConcept C151730666 @default.
• W47466666 hasConcept C156622251 @default.
• W47466666 hasConcept C159390177 @default.
• W47466666 hasConcept C159750122 @default.
• W47466666 hasConcept C17409809 @default.
• W47466666 hasConcept C180756352 @default.
• W47466666 hasConcept C199289684 @default.
• W47466666 hasConcept C2778131859 @default.
• W47466666 hasConcept C2778644228 @default.
• W47466666 hasConcept C2779870107 @default.
• W47466666 hasConceptScore W47466666C109007969 @default.
• W47466666 hasConceptScore W47466666C111696902 @default.
• W47466666 hasConceptScore W47466666C120806208 @default.
• W47466666 hasConceptScore W47466666C126753816 @default.
• W47466666 hasConceptScore W47466666C127313418 @default.
• W47466666 hasConceptScore W47466666C130452526 @default.
• W47466666 hasConceptScore W47466666C151730666 @default.
• W47466666 hasConceptScore W47466666C156622251 @default.
• W47466666 hasConceptScore W47466666C159390177 @default.
• W47466666 hasConceptScore W47466666C159750122 @default.
• W47466666 hasConceptScore W47466666C17409809 @default.
• W47466666 hasConceptScore W47466666C180756352 @default.
• W47466666 hasConceptScore W47466666C199289684 @default.
• W47466666 hasConceptScore W47466666C2778131859 @default.
• W47466666 hasConceptScore W47466666C2778644228 @default.
• W47466666 hasConceptScore W47466666C2779870107 @default.
• W47466666 hasLocation W474666661 @default.
• W47466666 hasOpenAccess W47466666 @default.
• W47466666 hasPrimaryLocation W474666661 @default.
• W47466666 hasRelatedWork W154930812 @default.
• W47466666 hasRelatedWork W1965062370 @default.
• W47466666 hasRelatedWork W2014798116 @default.
• W47466666 hasRelatedWork W2025279601 @default.
• W47466666 hasRelatedWork W2048200093 @default.
• W47466666 hasRelatedWork W2077173987 @default.
• W47466666 hasRelatedWork W2087319826 @default.
• W47466666 hasRelatedWork W2090861781 @default.
• W47466666 hasRelatedWork W2101359249 @default.
• W47466666 hasRelatedWork W2103777900 @default.
• W47466666 hasRelatedWork W2106688757 @default.
• W47466666 hasRelatedWork W2113375931 @default.
• W47466666 hasRelatedWork W2115219901 @default.
• W47466666 hasRelatedWork W2131109144 @default.
• W47466666 hasRelatedWork W2146874305 @default.
• W47466666 hasRelatedWork W2667260292 @default.
• W47466666 hasRelatedWork W3022876485 @default.
• W47466666 hasRelatedWork W3112611907 @default.
• W47466666 hasRelatedWork W88369145 @default.
• W47466666 hasRelatedWork W2495719223 @default.
• W47466666 isParatext "false" @default.
• W47466666 isRetracted "false" @default.
• W47466666 magId "47466666" @default.
• W47466666 workType "dissertation" @default.