peperite

peperite

[′pep·ə‚rīt]
(geology)
A breccialike material in marine sedimentary rock, considered to be either a mixture of lava with sediment, or shallow intrusions of magma into wet sediment.
References in periodicals archive ?
(1987): Variation in peperite textures associated with differing host-sediment properties.
(2002): Morphology of a crater-filling lava lake margin, The Peninsula tuff cone, Tule Lake National Wildlife Refuge, California: implications for formation of peperite textures.
White, J.D.L., McPhie, J., Skilling, I., (2000): Peperite: a useful genetic term.
12 Pb-Zn deposits (New Brunswick), the presence of peperites in association with pyroclastic rocks and tufflavas indicates the in situ emplacement of pyroclastic rocks (cf., Downey, 2005).
Besides, fragments of sediments are frequently observed inside the sill and even magma-sediment intermixtures (peperites) have been recognised in the thickest level.
Additionally, the development of billowed margins and peperites, the presence of fragments of structure-less sediments from the country-rocks inside the sill, the presence of vesicles and the composition of clinopyroxene indicate that the magma emplaced into wet, unconsolidated, shallow sediments (see sections 7.1 and 7.2).