Anagram & Information om | Engelska ordet INTRUSIVES

Exempel på hur man kan använda INTRUSIVES i en mening

• The rocks of the Guiana Shield consist of metasediments and metavolcanics (greenstones) overlain by sub-horizontal layers of sandstones, quartzites, shales and conglomerates intruded by sills of younger mafic intrusives such as gabbros.
• Stratocones are large cone-shaped volcanoes made up of lava flows, explosively erupted pyroclastic rocks, and igneous intrusives that are typically centered around a cylindrical vent.
• The subvolcanic intrusives are similar in geochemistry to the associated rhyolite volcanics, which they intrude into.
• The Bolivian veins and the 4500 year old workings of Cornwall and Devon, England, are concentrated in high temperature quartz veins and pegmatites associated with granitic intrusives.
• The geology of the range includes limestone, sandstone, and siltstone of Cambrian to Cretaceous age which were intruded by alkaline intrusives of monzonite, syenite to tinguaite composition of Cretaceous to Tertiary age.
• It is the type locality for fenite, a metasomatic rock commonly found around carbonatite and alkali intrusives.
• Igneous deposits include nepheline syenite intrusives at Ilimaussaq, Greenland; the disseminated uranium deposit at Rossing, Namibia; uranium-bearing pegmatites, and the Aurora crater lake deposit of the McDermitt Caldera in Oregon.
• Strontium isotope ratios of the leucogranite intrusives are distinct from that of the gneiss and associated leucosomes.
• Unmetamorphosed Late Cretaceous or Tertiary terrestrial sedimentary rocks of the Arkose Ridge Formations lie to the south of the schist and intrusives, across a low-angle detachment fault.
• IOCG deposits are classified as separate to other large intrusive related copper deposits such as porphyry copper deposits and other porphyry metal deposits primarily by their substantial accumulations of iron oxide minerals, association with felsic-intermediate type intrusives (Na-Ca rich granitoids), and lack of the complex zonation in alteration mineral assemblies commonly associated with porphyry deposits.
• Precambrian schist, amphibolite and gneiss, Middle Paleozoic granite, gabbroid, metamorphosed volcano-sedimentary rocks and Late Paleozoic intrusives are known through drillholes in the South Turan Platform.
• Post-Minas intrusives (various ages): Pegmatitic dikes and granitoid plutons which intruded into the Minas Supergroup.
• It is an accessory mineral in nepheline syenites, and in fenites it is associated with alkaline intrusives.

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