Environmental controls on silica sinter formation revealed by radiocarbon dating

  title={Environmental controls on silica sinter formation revealed by radiocarbon dating},
  author={Silvina Slagter and Martin Reich and Carolina Munoz-Saez and John R. Southon and Diego Morata and Fernando Barra and Jianmin Gong and John Roma Skok},
Silica sinter deposits overlying geothermal fields are reliable records of environmental, geochemical, and biological changes through time. Therefore, determining the absolute ages of formation of these deposits is fundamental to constrain the timing and evolution of processes that have shaped silica precipitation on the Earth’s surface. We performed 14C dating of organic matter trapped within silica sinter deposits from the high-altitude El Tatio geyser field in the Chilean Altiplano… Expand
5 Citations
Dating silica sinter (geyserite): A cautionary tale
Abstract We describe a new effort to date hydrothermal silica sinter deposits (geyserite) from the Upper Geyser Basin of Yellowstone National Park using 14C of co-deposited organic matter, U-seriesExpand
Depositional evolution of an extinct sinter mound from source to outflow, El Tatio, Chile
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The Alpehue geyser field, Sollipulli Volcano, Chile
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Radiocarbon dating of silica sinter deposits in shallow drill cores from the Upper Geyser Basin, Yellowstone National Park
Abstract To explore the timing of hydrothermal activity at the Upper Geyser Basin (UGB) in Yellowstone National Park, we obtained seven new accelerator mass spectrometry (AMS) radiocarbon 14 C agesExpand
Geochemistry of metals and metalloids in siliceous sinter deposits: Implications for elemental partitioning into silica phases
Abstract Sinter deposits are formed by precipitation of silica from hydrothermal fluids that have reached the surface environment. They are commonly found around hot springs and represent surfaceExpand
Silica deposits on Mars with features resembling hot spring biosignatures at El Tatio in Chile
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In-situ grown silica sinters in Icelandic geothermal areas.
The results suggest that the interplay between purely abiotic processes and the ubiquitous presence of mesophilic and thermophilic microorganisms in modern silica rich terrestrial hydrothermal settings provides an excellent analogue for processes in Earth's and possibly Mars's ancient past. Expand
Tracking crystallinity in siliceous hot-spring deposits
Siliceous hot spring deposits (sinters) entrap paleoenvironmentally significant components and are used as extreme-environment analogs in the search for early Earth and extraterrestrial life.Expand
Silica accumulation rates for siliceous sinter at Orakei Korako geothermal field, Taupo Volcanic Zone, New Zealand
Abstract The rate of silica accumulation on glass slides over 895 days (2 years 5 months and 12 days) was determined using in-situ experiments in the discharge channel of Map of Australia hot pool,Expand
Physico-chemical and environmental controls on siliceous sinter formation at the high-altitude El Tatio geothermal field, Chile
Abstract El Tatio geothermal field is located 4270 m above sea level in the Altiplano, northern Chile. Siliceous sinter deposits from El Tatio were studied to understand the influence of waterExpand
The growth of siliceous sinter deposits around high-temperature eruptive hot springs
Abstract Siliceous hot spring deposits (sinter) are of interest as they are indicative of hydrothermal resources at depth and may provide evidence for early life on Earth and possibly Mars. NumericExpand
Mineralogical characterization of silica sinters from the El Tatio geothermal field, Chile
Abstract Silica sinters, deposited from alkali chloride waters in the El Tatio geothermal field in northern Chile (22°20'S, 68°01'W), have been characterized by XRD, SEM, TG-DTA, and FTIR. TheExpand
Seasonal changes in silica deposition in hot spring systems
Abstract Monthly monitoring of water chemistry at Octopus Spring, Yellowstone National Park, reveals no changes in the chemical composition over this eight-month study. Differences in silicaExpand