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![]() | Reply 2 to Comment on “Ultra-high pressure and ultra-reduced minerals in ophiolites may form by lightning strikes” We appreciate the comments by Yang et al. (2018) to our recent proposal (Ballhaus et al. 2017) that high pressure and ultra-reduced minerals in ophiolites may form by lightning strikes. We have carried out additional experiments to address the issues raised by Yang et al. (2018). We maintain that the ultra-reduced phases in ophiolites are best explained as plasma precipitates generated by lightning strikes. |
![]() | Comment 2 on “Ultra-high pressure and ultra-reduced minerals in ophiolites may form by lightning strikes” We read with great interest the paper by C. Ballhaus and coauthors (2017) reporting on electrical discharge experiments that showed how SiC and other phases found in mantle-derived rocks can potentially form by lightning strikes (Ballhaus et al., 2017). The experiments are technically innovative and challenging and the results make fascinating reading. In a comment paper, Griffin et al. (2018) noted several lines of evidence that ultra-high pressure (UHP) and super reduced (SuR) minerals in ophiolites do not form by lightning strikes. Here, we add additional comments relating to the geological and mineralogical data from ophiolites that are not compatible with the model of Ballhaus et al. (2017). |
![]() | Apollo 15 green glass He-Ne-Ar signatures – In search for indigenous lunar noble gases Abstract: |