A compilation and characterisation of lithics in kimberlite and common maar-diatremes and tephra ring deposits.

ABSTRACT: Maar-diatreme volcanoes are the second-most common type on land, occurring in volcanic fields within all major tectonic environments. Their deposits typically contain an abundance of lithic fragments quarried from the substrate, and many contain large, deep-sourced lithic fragments that were erupted to the surface. Primary volcaniclastic deposits fill the diatreme structure formed during eruption. There is negligible inelastic deformation of diatreme-adjacent country rock, indicating that country rock is removed to create the diatreme structures, either by being shifting downward below observable levels, ejected upward to contribute to surficial deposits, or dissolved and hidden in magma erupted or intruded at depth. No previous study has systematically reviewed and analysed the reported l

SUBMITTER: Fitzgerald MK 

PROVIDER: S-EPMC8671588 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature