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Relevant bibliographies by topics / Intrusions (Geology)

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Academic literature on the topic 'Intrusions (Geology)'

Author: Grafiati

Published: 4 June 2021

Last updated: 29 July 2024

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Journal articles on the topic "Intrusions (Geology)"

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THÓRARINSSON, SIGURJÓN B., PAUL M. HOLM, SEBASTIAN TAPPE, LARRY M. HEAMAN, and NIELS-OLE PRÆGEL. "U–Pb geochronology of the Eocene Kærven intrusive complex, East Greenland: constraints on the Iceland hotspot track during the rift-to-drift transition." Geological Magazine 153, no. 1 (July 3, 2015): 128–42. http://dx.doi.org/10.1017/s0016756815000448.

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AbstractSeveral major tholeiitic (e.g. the Skaergaard intrusion) and alkaline (e.g. the Kangerlussuaq Syenite) intrusive complexes of the North Atlantic Large Igneous Province are exposed along the Kangerlussuaq Fjord in East Greenland. The Kærven Complex forms a satellite intrusion to the Kangerlussuaq Syenite and includes early tholeiitic gabbros and a series of cross-cutting alkaline intrusions ranging from monzonite to alkali granite. The alkaline intrusions cut the gabbros, and are cut by the outer nordmarkite zone of the Kangerlussuaq Syenite. This study presents the first U–Pb zircon ag

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O'Driscoll, B. "The Centre 3 layered gabbro intrusion, Ardnamurchan, NW Scotland." Geological Magazine 144, no. 6 (September 21, 2007): 897–908. http://dx.doi.org/10.1017/s0016756807003846.

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AbstractDetailed remapping of the Palaeogene Ardnamurchan Centre 3 gabbros, NW Scotland, suggests that this classic sequence of ring-intrusions forms a composite layered lopolith. The area mapped by previous studies as the Great Eucrite gabbro intrusion comprises 70% by area of Centre 3. Field observations suggest that most of the other smaller ring-intrusions of Centre 3 (interior to the Great Eucrite) constitute either distinct petrological facies of the same intrusion, or included country-rock or peridotite blocks. These observations, together with syn-magmatically deformed inward-dipping m

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Canhimbue, Ludmila, and Irina Talovina. "Geochemical Distribution of Platinum Metals, Gold and Silver in Intrusive Rocks of the Norilsk Region." Minerals 13, no. 6 (May 24, 2023): 719. http://dx.doi.org/10.3390/min13060719.

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The Norilsk ore district is one of the world leaders in the production of platinum metals. Long-term research focused on the detection of sulfide platinum-copper-nickel ores contributed to the accumulation of a large volume of scientific material on the geology and mineralization of the Norilsk area. Despite this, the issue of the composition of the initial melt for ore-bearing intrusive complexes and its degree of enrichment with noble metals remains open. Intrusive rocks of the Norilsk region are rarely analyzed for their ratio of noble metals. However, the analysis and comparison of geochem

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Kovacs, Marinel, Zoltán Pécskay, Alexandrina Fülöp, Maria Jurje, and Oscar Edelstein. "Geochronology of the Neogene intrusive magmatism of the Oaș—Gutâi Mountains, Eastern Carpathians (NW Romania)." Geologica Carpathica 64, no. 6 (December 1, 2013): 483–96. http://dx.doi.org/10.2478/geoca-2013-0033.

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Abstract Earlier geological work in the Oaș-Gutâi Mts (OG), Eastern Carpathians, has revealed the extensive presence of shallow subvolcanic intrusive bodies, both exposed on the surface and covered by Paleogene-Neogene sedimentary sequences and Neogene volcanic formations. This study is based on detailed mapping and sampling of the OG Neogene intrusive magmatic rocks. Thirty seven representative intrusions (sills, dykes, microlaccoliths, etc.) were selected for radiometric dating. These intrusions show a wide variety of petrographic rock-types: from microgabbros to microgranodiorites and from

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Makkonen, Hannu V., and Pekka Tuisku. "Geology and crystallization conditions of the Särkiniemiintrusion and related nickel-copper ore, central Finland – implications for depth of emplacement of 1.88 Ga nickel-bearing intrusions." Bulletin of the Geological Society of Finland 92, no. 2 (December 15, 2020): 111–30. http://dx.doi.org/10.17741/bgsf/92.2.003.

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Several Ni-Cu deposits occur within the Kotalahti area, central Finland, in proximity to an Archaean gneiss dome surrounded by a Palaeoproterozoic craton-margin supracrustal sequence comprising quartzites, limestones, calc-silicate rocks, black schists and banded diopside amphibolites. The geology of the area and age of the Ni-bearing intrusions (1.88 Ga) are similar to the Thompson Ni belt in the Canadian Trans-Hudson Orogen. The small mafic-ultramafic and Ni-Cu -bearing Särkiniemi intrusion, closely associated with the Archaean basement core of the Kotalahti Dome, is composed of a western pe

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Krivolutskaya, Nadezhda, Sheida Makvandi, Bronislav Gongalsky, Irina Kubrakova, and Natalia Svirskaya. "Chemical Characteristics of Ore-Bearing Intrusions and the Origin of PGE–Cu–Ni Mineralization in the Norilsk Area." Minerals 11, no. 8 (July 28, 2021): 819. http://dx.doi.org/10.3390/min11080819.

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The composition of the parental magmas of Cu–Ni deposits is crucial for the elucidation of their genesis. In order to estimate the role of magma in ore formation, it is necessary to compare the compositions of silicate rock intrusions with different mineralization patterns, as observed in the Norilsk region. The rock geochemistry of two massifs located in the same Devonian carbonate rocks—the Kharaelakh intrusion, with its world-class platinum-group element (PGE)–Cu–Ni deposit, and the Pyasinsky-Vologochansky intrusion, with its large deposit—was studied. Along with these massifs, the Norilsk

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Hart, Thomas Robert, and Carole Anne MacDonald. "Proterozoic and Archean geology of the Nipigon Embayment: implications for emplacement of the Mesoproterozoic Nipigon diabase sills and mafic to ultramafic intrusions." Canadian Journal of Earth Sciences 44, no. 8 (August 1, 2007): 1021–40. http://dx.doi.org/10.1139/e07-026.

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The Nipigon Embayment is underlain by Archean rocks of the English River, Wabigoon, and Quetico subprovinces, and intruded along the west side by late- to post-tectonic mafic to ultramafic intrusions. The early Mesoproterozoic ultramafic to felsic Badwater intrusion and felsic English Bay Complex are located in the northwest corner of the Nipigon Embayment. Three mafic to ultramafic intrusions, the Disraeli, Seagull, and Hele intrusions, are located south of Lake Nipigon, and the Kitto intrusion is located east of the lake. A number of mafic to ultramafic bodies (Jackfish (Island), Shillabeer,

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Milner, Simon C., Anton P. Le Roex, and Ronald T. Watkins. "Rb-Sr age determinations of rocks from the Okenyenya igneous complex, northwestern Namibia." Geological Magazine 130, no. 3 (May 1993): 335–43. http://dx.doi.org/10.1017/s001675680002001x.

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AbstractThe Okenyenya igneous complex is one of a suite of intrusions which define a prominent northeast-trending linear feature in Damaraland, northwestern Namibia. Precise Rb–Sr internal isochron ages range from 128.6 ± 1 to 123.4 ± 1.4 Ma for the major phases of intrusion identified within the complex. The tholeiitic gabbros forming the outer rings of the complex, and the later alkali gabbros which form the central hills, cannot be distinguished in terms of Rb–Sr ages, although field relations clearly indicate the younger age of the latter. The intrusionsof nepheline-syenite and essexite co

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NICOLL, GRAEME R., MARIAN B. HOLNESS, VALENTIN R. TROLL, COLIN H. DONALDSON, EOGHAN P. HOLOHAN, C. HENRY EMELEUS, and DAVID CHEW. "Early mafic magmatism and crustal anatexis on the Isle of Rum: evidence from the Am Màm intrusion breccia." Geological Magazine 146, no. 3 (March 25, 2009): 368–81. http://dx.doi.org/10.1017/s0016756808005864.

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AbstractThe Rum Igneous Centre comprises two early marginal felsic complexes (the Northern Marginal Zone and the Southern Mountains Zone), along with the later central ultrabasic–basic layered intrusions. These marginal complexes represent the remnants of near-surface to eruptive felsic magmatism associated with caldera collapse, examples of which are rare in the North Atlantic Igneous Province. Rock units include intra-caldera collapse breccias, rhyolitic ignimbrite deposits and shallow-level felsic intrusions, as well the enigmatic ‘Am Màm intrusion breccia’. The latter comprises a dacitic m

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Zi, Jian-Wei, Birger Rasmussen, Janet R. Muhling, Wolfgang D. Maier, and Ian R. Fletcher. "U-Pb monazite ages of the Kabanga mafic-ultramafic intrusions and contact aureoles, central Africa: Geochronological and tectonic implications." GSA Bulletin 131, no. 11-12 (April 15, 2019): 1857–70. http://dx.doi.org/10.1130/b35142.1.

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AbstractMafic-ultramafic rocks of the Kabanga-Musongati alignment in the East African nickel belt occur as Bushveld-type layered intrusions emplaced in metasedimentary sequences. The age of the mafic-ultramafic intrusions remains poorly constrained, though they are regarded to be part of ca. 1375 Ma bimodal magmatism dominated by voluminous S-type granites. In this study, we investigated igneous monazite and zircon from a differentiated layered intrusion and metamorphic monazite from the contact aureole. The monazite shows contrasting crystal morphology, chemical composition, and U-Pb ages. Mo

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Dissertations / Theses on the topic "Intrusions (Geology)"

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Dupee, Matthew E. "Porphyroblast Kinematics and Crenulation Cleavage Development in the Aureole of the Mooselookmeguntic Pluton, Western Maine." Fogler Library, University of Maine, 2005. http://www.library.umaine.edu/theses/pdf/DupeeME2005.pdf.

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Magee, Craig. "Emplacement of sub-volcanic cone sheet intrusions." Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/3042/.

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Sub-volcanic intrusive networks, of which cone sheets are recognised as a major constituent, control volcano growth and eruption style. The accepted cone sheet model is that these confocally dipping intrusions originate from an unexposed central magma chamber through dip-parallel magma flow. However, the emplacement mechanism of cone sheets has remained poorly understood. The classic ~58 Ma cone sheet swarm of Ardnamurchan, NW Scotland, offers an excellent opportunity to further resolve the emplacement dynamics of cone sheets through studying their magma flow. Structural measurements and aniso

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Szarawarska, Ewa. "Origin of large-scale sandstone intrusions : insights from subsurface case studies and numerical modelling." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=53388.

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Thesis (Ph.D.)--Aberdeen University, 2009.<br>With: 3D seismic characterization of large-scale sandstone intrusions in the lower Paleogene of the North Sea: completely injected vs in situ remobilized saucer-shaped sand bodies /E. Szarawarska ...et al. In review, Basin Research. Special Issue. Includes bibliographical references.

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Sarkar, Arindam. "Isotopic geochemistry of mafic intrusions and related sulfide mineralization Uitkomst and Kabanga, Africa and the Lady of the Lake intrusion, Montana /." [Bloomington, Ind.] : Indiana University, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3332475.

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Thesis (Ph.D.)--Indiana University, Dept. of Geological Sciences, 2008.<br>Title from PDF t.p. (viewed on May 14, 2009). Source: Dissertation Abstracts International, Volume: 69-09, Section: B, page: 5279. Adviser: Edward M. Ripley.

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Al-Jawadi, A. F. "Minor igneous intrusions of the Lake District : geochronology, geochemistry and petrology." Thesis, University of Newcastle Upon Tyne, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376308.

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Pattison, Christopher Ian. "Igneous intrusions in the Bowen Basin." Thesis, Queensland University of Technology, 1990. https://eprints.qut.edu.au/35967/1/35967_Pattison_1990.pdf.

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Igneous intrusions, in the form of stocks, sills and dykes are abundant in the Bowen Basin. They are predominantly Early Cretaceous in age, exclusively epizonal in origin and range in composition from dolerite to granodioriteldacite. All rock units within the basin, up to and including the Clematis Group, are intruded to some degree. This study assesses the distribution, form, petrology and mode of emplacement of plutons, igneous sills and dykes occurring in the Bowen Basin, and considers their relationship to the prevailing structure. The tectonic implications of the findings are then asse

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Christodoulou, C. "Petrology of the plutonic rocks of the Macquarie Island Complex /." Title page, contents and abstract only, 1990. http://web4.library.adelaide.edu.au/theses/09PH/09phc556.pdf.

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Wong, Lai-man Kennis. "Geochemistry of mafic dykes from the Discovery Bay granitic pluton, Hong Kong." Click to view the E-thesis via HKUTO, 2004. http://sunzi.lib.hku.hk/hkuto/record/B42577688.

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Sigler, Joshua T. "The metamorphic and structural evolution of the Davis Peak area, northern Park Range, Colorado." Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1798480831&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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Lassen, Birgitte. "Petrogenesis of the late Archean Quetico alkaline suite intrusions, Western Superior Province, Canada." Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/10684.

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A suite of 13 late Archean subalkaline to alkaline intrusions were studied by major and trace element geochemistry and neodymium, hafnium and lead isotopic methods. The intrusions (2683 - 2678 Ma) are located in the Quetico metasedimentary belt, western Superior Province, and include pyroxene hornblendite, diorite, monzonite, syenite and carbonatite. The samples display arc-like trace element patterns with high Cs, Ba, Sr and light rare earth element abundances and low Zr, Hf, Nb, Ta and Ti. Neodymium and hafnium isotope data reflect derivation from a depleted mantle source with minor contribu

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Books on the topic "Intrusions (Geology)"

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1906-, Hunt Charles Butler, ed. Geology of the Henry Mountains, Utah, as recorded in the notebooks of G.K. Gilbert, 1875-76. Boulder, Colo: Geological Society of America, 1988.

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Grant, Cawthorn R., ed. Layered intrusions. Amsterdam: Elsevier, 1996.

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Knipping, Bernhard. Basalt intrusions in evaporites. Berlin: Springer-Verlag, 1989.

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Eales, Hugh V. The Bushveld Complex: An introduction to the geology and setting of the Bushveld Complex. Pretoria: Council for Geoscience, 2014.

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Alekseev, A. A. Different︠s︡irovannye intruzii zapadnogo sklona Urala. Ufa: Gilem, 2003.

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Dabovski, Khristo. Puknatinni intruzii v Srednogorieto: Strukturen analiz, matematichni i laboratorni modeli. Sofii͡a︡: Izd-vo na Bŭlgarskata akademii͡a︡ na naukite, 1988.

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Zolotukhin, V. V. Osobennosti different͡s︡irovannogo intruziva Tulaĭ-Kiri͡a︡ka na Taĭmyre: K probleme platformennykh granitov. Novosibirsk: "Nauka," Sibirskoe otd-nie, 1990.

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Geological Survey (U.S.), ed. Descriptions of plutons in the western part of the Juneau and parts of the adjacent Skagway 1:250,000 quadrangles, southeastern Alaska. [Denver, Colo.?]: U.S. Dept. of the Interior, Geological Survey, 1986.

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N, Bri͡u︡khanov V., ред. Kolʹt͡s︡evye struktury kontinentov Zemli. Moskva: "Nedra", 1987.

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1953-, Shimizu Masaaki, and Gastil R. Gordon, eds. Recent advances in concepts concerning zoned plutons in Japan and southern and Baja California. Tokyo: University Museum, University of Tokyo, 1990.

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Book chapters on the topic "Intrusions (Geology)"

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Scoates, James S., and Corey J. Wall. "Geochronology of Layered Intrusions." In Springer Geology, 3–74. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-9652-1_1.

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Veksler, Ilya V., and Bernard Charlier. "Silicate Liquid Immiscibility in Layered Intrusions." In Springer Geology, 229–58. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-9652-1_5.

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Park, R. G. "Emplacement of igneous intrusions." In Foundations of Structural Geology, 94–99. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-011-6576-1_11.

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Latypov, Rais. "Basal Reversals in Mafic Sills and Layered Intrusions." In Springer Geology, 259–93. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-9652-1_6.

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Higgins, Michael D. "Quantitative Textural Analysis of Rocks in Layered Mafic Intrusions." In Springer Geology, 153–81. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-9652-1_3.

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O’Driscoll, Brian, Brian O’Driscoll, Eric C. Ferré, Carl T. E. Stevenson, and Craig Magee. "The Significance of Magnetic Fabric in Layered Mafic-Ultramafic Intrusions." In Springer Geology, 295–329. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-9652-1_7.

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Su, Ben-Xun. "Regional Geology." In Mafic-ultramafic Intrusions in Beishan and Eastern Tianshan at Southern CAOB: Petrogenesis, Mineralization and Tectonic Implication, 13–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-54262-6_2.

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Petrov, Oleg, Edward Prasolov, Sergey Sergeev, and Yury Pushkarev. "Isotope Correlations in Rocks and Ores of Major Intrusions in the Norilsk District." In Springer Geology, 207–13. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-05216-4_7.

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Svensen, Henrik H., Stéphane Polteau, Grant Cawthorn, and Sverre Planke. "Sub-volcanic Intrusions in the , South Africa." In Physical Geology of Shallow Magmatic Systems, 349–62. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-14084-1_7.

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Svensen, Henrik H., Stéphane Polteau, Grant Cawthorn, and Sverre Planke. "Sub-volcanic Intrusions in the , South Africa." In Physical Geology of Shallow Magmatic Systems, 349–62. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/11157_2014_7.

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Conference papers on the topic "Intrusions (Geology)"

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Bulegenov, Kanat, Sayat Rais, and Daulet Muratkhanov. "GEOLOGY OF PERMIAN GRANITES OF THE KARATAU-NARYN ZONE AND THEIR PROSPECTIVE FOR RARE METALS (SOUTH KAZAKHSTAN)." In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023/1.1/s01.07.

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The studied intrusive massif is an ellipse elongated in the sublatitudinal direction. Only the eastern part, 2.2x4 km in size, is exposed on the earth surface. Under the sediments, the intrusion was traced by boreholes and aeromagnetic survey. The intrusion is a sheetlike body of a fractured nature, inclined to the southwest. A zone of marmorized limestones, as well as tremolite and wolastonite hornfelses, formed at the contact with the intrusion. Among the intrusive rocks that make up the massif, three successive igneous phases are distinguished. The first phase is represented by pyroxenites,

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Karmalkar, N. R., R. A. Duraiswami, M. K. Jonnalagadda, W. L. Griffin, Michel Gregoire, Mathieu Benoit, and Guillaume Delpech. "Magma Types and Source Characterization of the Early Deccan Magmatism, Kutch Region, NW India:Insights from Geochemistry of Igneous Intrusions." In Recent Studies on the Geology of Kachchh. Geological Society of India, 2016. http://dx.doi.org/10.17491/cgsi/2016/105421.

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Sen, Gautam, Willis E. Hames, Dalim K. Paul, Sanjib K. Biswas, Arijit Ray, and Indra S. Sen. "Pre-Deccan and Deccan Magmatism in Kutch, India: Implications of New ⁴⁰Ar/³⁹Ar Ages of Intrusions." In Recent Studies on the Geology of Kachchh. Geological Society of India, 2016. http://dx.doi.org/10.17491/cgsi/2016/105422.

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V., Järvinen, and Heinonen J. S. "Geology of the Precambrian mafic-ultramafic Näränkävaara intrusion – Review of recent results." In Project KO5125 ARLIN Arctic Layered Intrusions as a Source of Critical Metals for Green Economy European Neighbourhood Instrument Cross-Border Cooperation Programme Kolarctic 2014-2020. GI KSC RAS, 2021. http://dx.doi.org/10.31241/arlin.2021.017.

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Joonnekindt, Jean Pierre, Francisco Diaz, Russell Davies, Paul Hultzsch, Sri Mulyani, Rindu Intani, Fanji Putra, et al. "Innovative Technical Strategies in Natural Fracture Characterization for Well Placement: Case Study from Darajat Field, Indonesia." In International Petroleum Technology Conference. IPTC, 2022. http://dx.doi.org/10.2523/iptc-22373-ms.

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Abstract The Darajat geothermal field, located in West Java, Indonesia and operated by Star Energy Geothermal, has a long history of production with about 30 wells in which image log data are available. The subsurface geometry of the field was characterized initially from remote sensing methods and surface geology to locate the intrusions, faults and rock units comprising the reservoir, and later validated by well data. Reducing the uncertainty in future well locations depends on models of natural fractures applied and used successfully in oil and gas reservoirs, and associated permeability sw

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McLemore, Virginia T. "Geology and geochemistry of the mid-Tertiary alkaline to calc-alkaline intrusions in the northern Hueco Mountains and adjacent areas, McGregor Range, southern Otero County, New Mexico." In 53rd Annual Fall Field Conference. New Mexico Geological Society, 2002. http://dx.doi.org/10.56577/ffc-53.129.

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Nutt, Constance J., and J. Michael O'Neill. "Geologic framework of Tertiary intrusions of the Cornudas Mountains, southern New Mexico." In 49th Annual Fall Field Conference. New Mexico Geological Society, 1998. http://dx.doi.org/10.56577/ffc-49.129.

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Connell, Katherine, M. Catherine Wilsbacher, Barbara P. Nash, and David B. Hacker. "GEOLOGY OF A PALEOGENE ALMANDINE GARNET-BEARING RHYOLITE INTRUSION, NORTHERN BLACK HILLS IGNEOUS PROVINCE, SOUTH DAKOTA." In GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-341102.

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Wilsbacher, M. Catherine, Katherine Connell, Barbara P. Nash, and David B. Hacker. "GEOLOGY OF THE CUSTER PEAK ALMANDINE GARNET-BEARING RHYOLITE INTRUSION, NORTHERN BLACK HILLS IGNEOUS PROVINCE, SOUTH DAKOTA." In GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-341080.

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Ohta, T., and T. Saito. "Intrusion behaviour of tree roots to rock mass caused by geologic structure." In THE 3RD INTERNATIONAL CONFERENCE ON CIVIL, MATERIALS, AND ENVIRONMENTAL ENGINEERING (ICCME 2021) (INTERNATIONAL WEBINAR) 4TH-5TH APRIL 2021. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0072621.

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Reports on the topic "Intrusions (Geology)"

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McLemore, Virginia T., Nels Iverson, Snir Woodard, Haley Dietz, Evan Owen, Ethan B. Haft, Tristan Childress, Amy Trivitt, and Richard Kelley. Geology and Mineral Deposits of the Cornudas Mountains, Otero County, New Mexico. New Mexico Bureau of Geology and Mineral Resources, 2022. http://dx.doi.org/10.58799/ofr-619.

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Re-examination of the rare earth elements (REE) deposits in the Cornudas Mountains is warranted in light of today's economic importance of critical minerals, including REE that are essential in most of our electronic devices. New mapping, petrography, 40Ar/39Ar geochronology, and geochemical analyses have provided a better understanding of the emplacement of these intrusions and associated mineral deposits. The Cornudas Mountains form the northern Trans-Pecos alkaline magmatic province in the southern part of the North American Cordilleran alkaline-igneous belt. The igneous rocks in the Cornud

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2

Currie, K. L. Geology of Fogo Island, Newfoundland - a study of the form and emplacement of igneous intrusions. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1997. http://dx.doi.org/10.4095/208656.

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Paktunc, D. Geology of the Stephen Intrusion. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/130643.

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Paktunc, D., J. Ketchum, and D. Watanabe. Geology of the mechanic intrusion. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/130644.

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Paktunc, D. Geology of the Portage Brook Intrusion, New Brunswick. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/130797.

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Rowins, S. M., A. E. Lalonde, and E. M. Cameron. Geology of the Archean Murdoch Creek Intrusion, Kirkland Lake, Ontario. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/126876.

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Hulbert, L. Geology of the Muskox Intrusion and associated Ni+Cu occurrences. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2005. http://dx.doi.org/10.4095/220361.

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Manor, M. J., C. J. Wall, G. T. Nixon, J. S. Scoates, R H Pinsent, and D. E. Ames. Preliminary geology and geochemistry of the Giant Mascot ultramafic-mafic intrusion, Hope, southwestern British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2014. http://dx.doi.org/10.4095/293429.

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Duke, J. M. Petrology and economic geology of the Dumont Sill: an archean intrusion of komatiitic affinity in northwestern Quebec. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1986. http://dx.doi.org/10.4095/120607.

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Hakonson, T. E. Evaluation of geologic materials to limit biological intrusion into low-level radioactive waste disposal sites. Office of Scientific and Technical Information (OSTI), February 1986. http://dx.doi.org/10.2172/6201692.

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