Dynamic water loss of antigorite by impact process

Sekine, Toshimori; Kimura, Tomoaki; Kobayashi, Takamichi; Mashimo, Tsutomu

doi:10.1016/j.icarus.2014.11.008

Cited by 9 publications

(3 citation statements)

References 33 publications

(53 reference statements)

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“…Much higher impact pressures >15 GPa are needed to dehydrate phyllosilicates (Tyburczy et al 1986;Tomeoka et al 1999). Sekine et al (2015) reported water loss in Mg-rich serpentine as a function of shock pressure, and if impacts were the primary heat source, then based on that relationship we find that water depletions for the heated CM chondrites in this study (~15 ->65 %) indicate shock pressures of 20 -50 GPa.…”

Section: Heat Sourcessupporting

confidence: 53%

Thermal alteration of CM carbonaceous chondrites: Mineralogical changes and metamorphic temperatures

King

Schofield

Russell

2021

Geochimica et Cosmochimica Acta

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Section: Heat Sourcessupporting

confidence: 53%

Thermal alteration of CM carbonaceous chondrites: Mineralogical changes and metamorphic temperatures

King

Schofield

Russell

2021

Geochimica et Cosmochimica Acta

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“…From an astrobiological perspective, the nature of geological processes that may be active at the seafloor and, specifically, what processes might drive the underlying heat flow are critical. For example, recent studies by Hsu et al (2015) and Sekine et al (2015) have suggested that hydrothermal venting on Enceladus may be relatively low temperature (50–200°C), and Glein et al (2015) suggested that the ocean composition may be rather Na-rich like the Earth, but significantly more alkaline. Such evidence suggests several candidate Earth analogues: ultramafic intermediate temperature hydrothermal systems such as the Lost City or Von Damm hydrothermal fields (Kelley et al , 2001; McDermott et al , 2015) or the Loihi Seamount off Hawai‘i (German et al , 2018) (Figs.…”

Section: Ocean Worlds: Goals Objectives and Investigationsmentioning

confidence: 99%

The NASA Roadmap to Ocean Worlds

et al. 2019

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In this article, we summarize the work of the NASA Outer Planets Assessment Group (OPAG) Roadmaps to Ocean Worlds (ROW) group. The aim of this group is to assemble the scientific framework that will guide the exploration of ocean worlds, and to identify and prioritize science objectives for ocean worlds over the next several decades. The overarching goal of an Ocean Worlds exploration program as defined by ROW is to “identify ocean worlds, characterize their oceans, evaluate their habitability, search for life, and ultimately understand any life we find.” The ROW team supports the creation of an exploration program that studies the full spectrum of ocean worlds, that is, not just the exploration of known ocean worlds such as Europa but candidate ocean worlds such as Triton as well. The ROW team finds that the confirmed ocean worlds Enceladus, Titan, and Europa are the highest priority bodies to target in the near term to address ROW goals. Triton is the highest priority candidate ocean world to target in the near term. A major finding of this study is that, to map out a coherent Ocean Worlds Program, significant input is required from studies here on Earth; rigorous Research and Analysis studies are called for to enable some future ocean worlds missions to be thoughtfully planned and undertaken. A second finding is that progress needs to be made in the area of collaborations between Earth ocean scientists and extraterrestrial ocean scientists.

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“…Symbols of G, H, M, and * represent the diffraction indices assigned for goethite, hematite, magnetite, and Cu, respectively. Cu may be involved from the container in the process of shock recovery experiments or cutting by a lathe(Sekine et al, 2015). Goe, goethite; Hem, hematite; and Mag, magnetite.…”

mentioning

confidence: 99%