| | Journal (article/letter/editorial) | Survey, National Center-MS 954, Reston, VA 22092, USA (Received October 10, 1990; accepted after revision...continental riffs and hosts a variety of mineral deposits. The rocks and mineral deposits of this 2000 km long rift...rift are exposed only in the Lake Superior region. In the Lake Superior region, the rift cuts across...clastic sedimentary rocks. Beneath the center of Lake Superior the volcanic and sedimentary rocks are...major classes of mineral deposits, magmatic and hydrothermal. All important mineral production in this | | | Report (issue) | Correlation of Precambrian Rocks of the Lake Superior Region, United States U.S. GEOLOGICAL SURVEY...1241-F Correlation of Precambrian Rocks of the Lake Superior Region, United States By G.B. MOREY and...isotope ages of exposed Precambrian rocks in the Lake Superior region of the north-central United States...Morey, G.B. Correlation of Precambrian rocks of the Lake Superior region, United States. (Correlation of...Stratigraphic-Pre-Cambrian. 2. Stratigraphic correlation-Superior, Lake, Region. I. Van Schmus, W.R. II. Title. III. Series | | Czamanske, Gerald K., Bennett, Pauline C., Zientek, Michael L., Weiblen, Paul W., Havach, George A., Foose, Michael P. (1986) Comprehensive bibliographies on mineralized and unmineralized layer mafic intrusions in the United States. Open-File Report Vol. 1986 (86-589) US Geological Survey doi:10.3133/ofr86589a | Report (issue) | economic geology a geographic region, and layered intrusion or cumulate Specifically excluded from the bibliography...copper-nickel deposits in the Duluth gabbro: Institute on Lake Superior Geology, 1st, Minneapolis, Minnesota, Proceedings...1115. Austin, G. S., 1961, Photogeology of Cook County, Minnesota: University of Minnesota, M.S. thesis...Gabbro of northern Cook County, Minnesota: Madison, University of Wisconsin, M.S. thesis, 47 p. 1960...northern Cook County, Minnesota: Institute on Lake Superior Geology, 6th, Madison, Wisconsin, Proceedings | | | Journal (article/letter/editorial) | Plausburgh, New York 12901 Abstract The Rearing Pond intrusion is a small basicbody that displaysa rangeof compositionand...The example used is a small Keweenawan gabbro intrusion which displays a textural change from ophitic...resulting from fractionation of. a basaltic magma' Mineral compositions determin-ed are approaching end-member...magma composition could not be determined for the intrusion' Geologic setting The Rearing Pond intrustion...lie along the southern boundary of the Keweenawan, Lake Superior syncline. The most cornmon intrusive 845 | | | Journal (article/letter/editorial) | Formation (Fig. 2), dated at 1208 Ma with single zircon U-Pb (Cornell et al., 1990). The PLS is a massif-type...more plagioclase (An,,_,,). With increasing mafic mineral content, the anorthosite grades into leucogabbro...hectometre to kilometre scale) 1029 f 10 Ma (single zircon, SHRIMP, Clifford et al., 199.5) Andesine, metamorphic...Cornell et al., 1990). Waterkop: 1170 Ma (U-Pb, zircon, A.J. Burger in Potgieter, 198 1) Possible mode...in both bodies (Geringer et ,al., 1985). A U-PI, zircon age of 1170 Ma on the Waterkop syenite was reported | | | Book | University of Southern California, Los Angeles, CA 90089, USA. P. JONATHAN PATCHETT Department of Geosciences,... Proterozoic layered intrusio The Jimberlana intrusion, Western Australia FoxRiversill ................Kiglapait . . . . . . . . . . . . . . . Muskox intrusion ...................................... ......... . Assessment of liquidus temperature based on zircon saturation . . . . . . . . . . . . . . . . . ....control sediment composition; (3) From combined U/Pb zircon and whole-rock Sm/Nd studies, to see if the apparent | | | Book | (Superior Province) ......... 2.12.1.1 The Bad Vermilion Lake Complex, Ontario ........................... 2.12...Bell River and Dore Lake Complexes, Quebec ................. 2.12.1.4 Big Trout Lake, Ontario ...........Kiglapait Layered Intrusion, Labrador ......................... 170 3.12.2 The Michikamau Intrusion, Labrador...2.4 Textures .......................... 5.2.5 Mineral Chemistry ................. 5.2.6 Geochemistry...3.4 Petrography ....................... 5.3.5 Mineral Chemistry ................. 5.3.6 Geochemistry | | | Report (volume) | 1969 Alaska Univ. Mineral Industry Research Lab. Rept. - University of Alaska Mineral Industry Research...Mines and Geology Mineral Inf. Service- California Division of Mines and Geology Mineral Information Service...Canada Dept. Energy, Mines and Resources Mineral Resources Br. Mineral Inf. Bull. Canada Department of Energy...Energy, Mines and Resources, Mineral Resources Branch Mineral Information Bulletin. Ottawa, Ontario, Canada...Mines Mineral Industries Bull. Industries Bulletin. Golden, Colo. Colorado School of Mines Mineral Colorado | | | Report (issue) | Canada ββββββββββββββββββββββββββββββββββββββββββMineral composition of nepheline syenite βββββββββββββ...in the United States βββββββββββββββββββββββββ Mineral composition of samples from four sections of the...Chemical composition ranges of saprolite from Spokane County, Washingtonββββββββββββββββββββββββββββ Characteristics...rocks contain 20-22 weight percent alumina. The mineral dawsonite, which contains 35.4 weight percent alumina...rock. Some saprolite is similar in chemical and mineral composition to high-alumina clay, and some saprolite | | | Book | Open Magma Chamber: The Newark Island Layered Intrusion, Labrador, Canada a MGTePOry A. SHYOCr and Ey...tes Sac Ge ba edatga Sele gale Saeitmamaasinn Mineral-Chemical and Isotopic Variations in Apollo 16 Impact-Melt...cabin on a lake outside Knoxville. He also might occasionally sneak his boat out onto the lake to fish for...effect because it is concentrated in garnet, a mineral that is substan- tially denser than pyroxene and...from Udachnaya peridotite xenoliths: Contrib. Mineral. Petrol., v. 128, p. 228-246. Canil, D., 1992 | | | Book | Institute, Houston, USA) and Louise Kellogg (University of California, Davis, USA) for the planet Mars...3.1. Duluth Complex, Mid-continent Rift System, USA 8.3.2. Noril'sk-Talnakh, Siberian Traps, Russia ...447 449 CHAPTER 9 Indirect Links: Hydrothermal Mineral Deposits 9.1 Introduction 9.2.1. Ring complexes...Soutbwestern Africa, and the Mid Continent Rift System, USA 9.3.1. Metallogeny ofthe Damara and Irumide orogens...basic in composition, or that it has high-pressure mineral assemblages. Following early models of basaltic |
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