Material and Mechanical Properties of Young Oceanic Basalt, Surtsey Volcano, Iceland ...
<!--!introduction!--> Time-lapse drilling of cored boreholes in 1979 and 2017 at Surtsey volcano, Iceland, provides a uniquely informative record of the material and mechanical heterogeneities that develop through interdependent processes of consolidation in very young, oceanic basalt. Integra...
| Main Authors: | , , , , , , , |
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| Format: | Conference Object |
| Language: | unknown |
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GFZ German Research Centre for Geosciences
2023
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.57757/iugg23-2096 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018735 |
| Summary: | <!--!introduction!--> Time-lapse drilling of cored boreholes in 1979 and 2017 at Surtsey volcano, Iceland, provides a uniquely informative record of the material and mechanical heterogeneities that develop through interdependent processes of consolidation in very young, oceanic basalt. Integration of laboratory physical property measurements with chemical, mineralogical and microstructural analyses in core segments from subaerial, submarine and subseafloor lapilli tuff deposits, a basaltic intrusion and a xenolithic block of seafloor sedimentary rock reveal heterogeneous physical characteristics within 1963–1967 Surtur crater deposits. The mass of authigenic crystalline cements (zeolites, calcium-silicate-hydrates, sulfites, carbonates) and clay mineral(s) appears similar within the suite of lapilli tuff sub-cores. Connected porosity varies from 42% in weakly-consolidated tuff in a submarine inflow zone to 21% in strongly-lithified tuff in upper subseafloor deposits near the explosively-excavated ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
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