How To Use Pillow lava In A Sentence
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It comprises turbiditic elastic rocks with cherts, pillow lavas and greenstones.
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The ophiolite contains a complete igneous stratigraphy of serpentinized ultramafics, gabbro, sheeted dykes and pillow lavas, as described by Moores.
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But all we see are pillow lavas, varying minutely with fewer or more buds, perhaps larger or smaller lobes.
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The upper flow unit is well exposed in the Prospect Park quarry and is made up of three types of lava flow structures: massive, columnar basalt, subaqueous, pahoehoe flow lobes, and bedded pillow lava.
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We have mapped the entire Spontang ophiolite region where we recognize a complete upper mantle sequence of harzburgite and crustal gabbroic, sheeted dykes and pillow lava succession.
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The focus of this article is the mineralization that occurs within a 10-25 meter layer of bedded pillow lava that overlies subaqueous flow lobes and massive columnar basalt that is well exposed in the quarry.
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Pillow lava and marine sponge spicules found in the contact zones between individual layers of the Columbia River Basalt suggest that these lava layers flowed out under water and that the water was ocean water, not freshwater from a lake.
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Peering through the porthole stationed on the port (left) side of the sub, it appears to Sinton that the 350-foot-high seamount is covered in pillow lavas with very little sediment cover.
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The oceanic island basalt is represented by the Nonghuai pillow lava, which is, originally Hawaii type one in the Paleotethyan ocean, an allochthon in the Indosinian foreland fold and thrust belt.
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Below water this has cooled and solidified into a reef of billowing pillow lava that splurges across the sand, leaving deep undercuts, caves and arches.
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The ophiolite contains a complete igneous stratigraphy of serpentinized ultramafics, gabbro, sheeted dykes and pillow lavas, as described by Moores.
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For many years there was much debate about how pillow lavas formed.
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It also used to be thought that pillow lavas could form only at great depths below the surface.
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These lumps can become somewhat rounded through rolling and they are piled up on top of each other to create pillow lava.
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Above, where hot lava erupted from the crust to be chilled by cold sea-water are purple, bulbous pillow lavas.
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Pastures of fresh magma flows known as pillow lavas and the rubble of frequent earthquakes line the floor of this stone trough.
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It comprises turbiditic elastic rocks with cherts, pillow lavas and greenstones.
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The study on petrology, lithochemistry and geo-chemistry of the pillow lava shows that it is the product of submarine basalt.
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In the Pechenga-Varzuga volcanosedimentary belt, alkali basalts eruptions about 2.2 Ga in age gradually gave way to tholeiite pillow lavas, Fe-picrite flows and Ti-rich basalts with ages around 1.98 Ga.
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The boundary between the sheeted dykes and pillow lavas is tectonic, and because of shearing, the pillow basalts are locally poorly preserved.
