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Sedimentary rock that contains fragments of younger igneous material
Peperite at Puy de Crouel in Auvergne, FrancePeperite from Cumbria, England. This example was formed during the Ordovician Period and it is of andesitic composition.
A peperite is a type of volcaniclastic rock consisting of sedimentary rock that contains fragments of younger igneous material and is formed when magma comes into contact with wet sediments.[1] The term was originally used to describe rocks from the Limagne region of France,[2] from the similarity in appearance of the granules of dark basalt in the light-coloured limestone to black pepper. Typically the igneous fragments are glassy and show chilled-margins to the sedimentary matrix, distinguishing them from clasts with a sedimentary origin.
^Skilling, I.P., White, J.D.L/ & McPhie, J. 2002. Peperite: a review of magma-sediment mingling, Journal of Volcanology and Geothermal Research, 114, 1-17
^de Goer de Herve, A. 2008. Chapter 5, Peperites from the Limagne Trench (Auvergne, French Massif Central), a distinctive feature of phreatomagmatic pyroclastics. History of semantic drift. In: Leyrit, H. & Montenat, C. (Eds.) Volcaniclastic rocks, from magmas to sediments, Taylor & Francis, 270pp.
A peperite is a type of volcaniclastic rock consisting of sedimentary rock that contains fragments of younger igneous material and is formed when magma...
Silicon dioxide Hyaloclastite – Volcaniclastic accumulation or breccia Peperite – Sedimentary rock that contains fragments of younger igneous material...
textures Rock microstructure § Graphic and other intergrowth textures Peperite Fen, Philip M., 1986, On the Origin of Graphic Granite, American Mineralogist...
the bedrock across half of the island. These are conformably overlain by peperite and the basaltic and andesitic Lorne plateau lavas. The ORS on Kerrera...
Kenneth (2002). "Water/magma interaction: some theory and experiments on peperite formation". Journal of Volcanology and Geothermal Research. 114 (1–2):...
well-preserved mafic-intermediate pillow lavas, pillow breccias, hyaloclastite and peperites, submarine lava domes and dome-associated breccia deposits. The complex...
years ago, which are found today in the Oban - Kerrera area of Scotland. Peperite occurs where they flowed into Old Red Sandstone lakes. Stampfli, G.M. (2002)...
classified by average clast size and percentage of pyroclastic material. Peperite Tuffite Fisher, Richard V. (1961). "Proposed classification of volcaniclastic...
of metavolcanic rock, predominantly andesitic hydroclastic breccia and peperite which intruded the Sierra Buttes Formation. The rock is part of the Northern...
showing the influence of tides and waves. As reported in Herring Cove Peperite Kings Cove Lighthouse Purple to pink medium/coarse sandstones with rip-up...
volcaniclastic rocks of the formation include hyaloclastite breccias, peperites and felsic ignimbrites. This last rock type forms at some locations the...
presence of pieces of green devitrified glass, with pyroclastic flow, peperite, tuff and lahar all being proposed. When shocked quartz, a higher-than-expected...
Stollhofen. (2002) Lava/sediment interaction in desert settings; are all peperite-like textures the result of magma-water interaction? Journal of Volcanology...
basin are affected by numerous intrusions. The area was the first where peperites were described, from a basaltic intrusion into lacustrine limestone. The...
microfossils (including pollen grains, spores and acritarchs) from wet peperites from the Lower Cretaceous Paraná-Etendeka intertrappean deposits of the...
Lake National Wildlife Refuge, California: implications for formation of peperite textures". Journal of Volcanology and Geothermal Research. 114 (1): 149...
Jotnian sediments suggest that magma intruded wet sediments as a sort of peperite. Jotnian sediments (mostly quartz sandstone and siltstone) exist at some...
lake sediments with occasional volcanic intercalations, the so-called peperites. The sediments can reach considerable thicknesses e.g. 2500 meter in the...
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