How To Use Brecciate In A Sentence
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A related group of achondrites, called mesosiderites, are brecciated and metamorphosed.
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Here colorless to yellow crusts of mimetite coat open spaces and coarse fragments in brecciated dacite.
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The mudstones are dark and contain calcareous concretions, the latter brecciated and with calcareous veins.
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The occurrence is in coarsely brecciated dolomite at the margin of a previously mined-out area in pillars and on the walls of a stope where the early work had ended.
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Mineralization consists of quartz-albite-calcite veining with disseminated pyrite, pyrrhotite and arsenopyrite hosted in pervasively silicified, brecciated siltstone and wacke.
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Orebodies in the fissure veins and both rock types were formed by hot water solutions moving upward and laterally along fractures and fault zones, brecciated amygdaloidal flow tops, and permeable conglomerate beds.
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brecciate rock
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Unbrecciated diogenite that shows orthopyroxenes and chromite grains that are partially fragmented and deformed.
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The diorite is brecciated, strongly altered and has undergone mylonitization.
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Brecciated and sheared ironstones were exploited for gold at several localities in the Mafic Formation.
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The field relationships and geochemistry is described in detail by Fumes & Lippard, who differentiated a lower body of brecciated flow-banded and ‘flow-folded’ trachytic lava, interlayered with microgabbro.
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Berriedale Water, (3) the brecciated conglomerate largely composed of granite detritus seen at Badbea, (4) red sandstones, shales and conglomeratic bands found in the Berriedale Water and further northwards in the direction of Strathmore.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary"
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Early-stage hydrothermal leaching of the limestone created solution cavities and brecciated zones along the fissures and faults, providing sites for subsequent ore deposition.
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It can be found in fissure veins and brecciated amygdaloidal basalt lodes but not in the conglomerate lodes.
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brecciated rock
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The ore body is brecciated and may represent the filling of a volcanic neck or pipe.
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Outcrops of the Leadville Limestone at the south end of Main Street contain vugs of quartz crystals that have cemented brecciated limestone.
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The composition of the lode is similar to that of the Isle Royale lode and consists of fragments of the oxidized brecciated flow top cemented by quartz, calcite, prehnite, and epidote.
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Native copper and a host of gangue minerals were deposited in fissure veins, brecciated and fractured vesicular lava flow tops, and conglomerate beds during the same period of metal mineralization.
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Brecciated ironstone is derived from the disruption of banded ironstone with which it is intercalated.
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These are found in granitic rocks forming the core of the high Cordillera Real and in the adjacent intruded sediments, in narrow fissure veins and broader brecciated zones containing the typical ore and gangue minerals described above, and also, in many cases, silver-bearing sulphides (chiefly tetrahedrite).
The Economic Aspect of Geology
