 | Abbott, Richard N., Bandy, Betsy R., Jackson, Trevor A., Scott, Peter W. (2003) Blueschist-Greenschist Transition in the Mt. Hibernia Schist, Union Hill, Parish of St. Thomas, Jamaica. International Geology Review, 45 (1) 1-15 doi:10.2747/0020-6814.45.1.1 | Journal (article/letter/editorial) | | the Mt. Hibernia Schist, Union Hill, Parish of St. Thomas, Jamaica a b b Richard N. Abbott , Betsy R...the Mt. Hibernia Schist, Union Hill, Parish of St. Thomas, Jamaica, International Geology Review, 45:1...the Mt. Hibernia Schist, Union Hill, Parish of St. Thomas, Jamaica RICHARD N. ABBOTT, JR.,1 Department...University of the West Indies, Mona, Kingston 7, Jamaica AND PETER W. SCOTT Downloaded by [University...on the southwestern side of the Blue Mountain Inlier in eastern Jamaica. The metamorphosed sediments and |  | Willner, Arne P., Maresch, Walter V., Massonne, Hans-Joachim, Sandritter, Katharina, Willner, Gudrun (2016) Metamorphic evolution of blueschists, greenschists, and metagreywackes in the Cretaceous Mt. Hibernia Complex (SE Jamaica) European Journal of Mineralogy, 28 (6) 1059-1078 doi:10.1127/ejm/2016/0028-2561 | Journal (article/letter/editorial) | | metagreywackes in the Cretaceous Mt. Hibernia Complex (SE Jamaica) ARNE P. WILLNER1,2,3,*, WALTER V. MARESCH1, HANS-JOACHIM...river cobbles in the Mt. Hibernia Complex in SE Jamaica includes metamorphosed basaltic and clastic sedimentary...suite, involving amphibole (Na amphibole and/or actinolite), pumpellyite, lawsonite, epidote, chlorite,...combined blueschist–greenschist sequence. Key-words: Jamaica; accretionary prism; blueschist; greenschist; lawsonite;... One of these occurrences is on the Island of Jamaica. Continuing on from a brief petrographic description |  | | Journal (article/letter/editorial) | | blueschist–greenschist facies metamorphism, Blue Mountain inlier, eastern Jamaica RICHARD N. ABBOTT Jr 1* and BETSY...Kingston, Jamaica 2 Cretaceous (possibly older) metamorphic rock occurs mainly in the Blue Mountain...Mountain inlier in eastern Jamaica. Fault-bounded blocks reveal two styles of metamorphism, Westphalia Schist...2007; accepted 8 May 2008 KEY WORDS metamorphism; Jamaica; Caribbean; greenschist; blueschist; amphibolite...amphibolite facies 1. INTRODUCTION Metamorphic rock in Jamaica is exposed in two erosional ‘inliers’, where the |  | | Report (issue) | | Investigations (IR) G-7 GEOLOGY AND GEOCHEMISTRY WANAMU-BLUE MOUNTAINS AREA WAINI SW, GUYANA by Bruce E. Kilpatrick...225675 G-7 GEOLOGY AND GEOCHEMISTRY WANAMU-BLUE MOUNTAINS AREA WAINI SW, GUYANA by Bruce E. Kilpatrick...S. Geological Survey ABSTRACT The Wanamu-Blue Mountains area is situated in the Northwest District...about 110 miles northwest of Georgetown. The Blue Mountains are low, but rugged, hills that have developed... These reaction zones consist of aureoles of actinolite schist, chloritic hornfels, and talcose zones |  | | Journal (article/letter/editorial) | | ON THE [vol. lxxxv, 13. The BASAL COMPLEX of JAMAICA, with special reference to the K]:~GSTON DISTRICT...Lazaret~o, Kingston Harbour. (B) Other Areas in Jamaica ..................... (C) Complex Pebbles in Later...Eocene Systems. The prevailing view now is that, in Jamaica, Porto Rico, and the Virgin Islands, there are...the age and relationships of the oldest rocks of Jamaica attracted my attention during a term of service...deposits. However, I made an unofficial visit to Jamaica during the winter of 1926-27 for the purpose of |  | | Journal (issue) | | INDUSTRIES Head Offi ce : 1069 State Office Bldg .• Portland Telephone : [503] 229-5580 97201 FIELD OFFICES...Maceo". Robert W. Doty, John l. Schwabe . Portland Talent Portland STATE GEOLOGIST Dona l d A. Hull GEOLOGISTS...and .~ineral Industries 1069 State Office Bldg. Portland, Oregon 97201 SOAPSTONE INDUSTRY IN SOUTHWEST...mica and graphite schists and volcanic rocks to actinolite-chlorite schist (Figure 4) i s believed to have... Green to brown chlorite, green to pale gray actinolite and tremolite, crystalline talc, and chrysotile |  | | Report (issue) | | .........66 Southern and central Appalachian Mountains, Introduction .........68 Alabama ...........................................101 Appalachian Mountains in New England, Introduction ..............102...14, 15 2. Geologic sketch map of the Klamath Mountains in California, showing the locations of talc occurrences...36, 37 7. Geologic sketch map of the Klamath Mountains in Oregon, showing the locations of talc occurrences...Geologic sketch map of parts of the Aldrich and Blue Mountains in Oregon, showing the locations of talc occurrences |  | | Journal (article/letter/editorial) | | Springer-Verlag 1974 Distribution of Fe and Mg in Actinolite, Hornblende and Biotite in Some Precambrian Metagreywackes...G6ttingen Received October 22, 1973 Abstract. Actinolite, hornblende and biotite coexisting in greenschist...amphiboles are in equilibrium, or at least that the actinolite participated in hornblendeforming reactions....hornfelses are found to have compositions between actinolite and hornblende of the greenschists, and frequently...(Choudhuri, 1972). The rocks belong to the Blue Mountains Formation of Cannon (1962) and have been folded |  | | Report (volume) | | Survey's lists. Twenty-five years ago the imports of Portland cement were four times the domestic production...combined production and imports of Portland cement. To-day the Portland cement industry is distributed generally...iron ore. See Limonite. Cement material (Portland). Portland cement manufactured near Demopolis, Leeds...level both free and with pyrite. Chilton County, Blue and Rock creeks. x Clay County, Idaho district....formerly mined at Christiana. Tallapoosa County, at Blue Hill and Gregory Hill. Gypsum. Choctaw, Clarke, |  | | Journal (article/letter/editorial) | | Basal section of amphibole showing pale green actinolite 0'1 mm' rim' Scale green hornblende by cated...possiblethat the latter representsnewly-formed actinolite that appearedbefore hornbrendeand persistswith...however,no actinolite in theserocks which here belongto the hornblendehornfels facies.Any actinolite which...pale yellow, 0 : light olive green, and 7 : light blue-green.Refractive indices and unit cell dimensionsof...cunmj"nBtonite crystals Hornblend e Hornblende Actinolite amphiboles the Hornfels Metasrevwacke AC |  | | Report (volume) | | lists. Twenty-five years ago the annual imports of Portland cement were four times the domestic production...combined production and imports of Portland cement. To-day the Portland cement industry is distributed generally...iron ore. See Limonite. Cement material (Portland). Portland cement manufactured near Demopolis, Leeds...level both free and with pyrite. Chilton County, Blue and Rock creeks. Clay County, Idaho district. Cleburne...formerly mined at Christiana. Tallapoosa County, at Blue Hill and Gregory Hill. Gypsum. Choctaw, Clarke, |  | | Report (issue) | | ne easresreseetrnee eeeeestee cine tare emer 83 Blue Mountains’Z One: 2.05. ce: ccs ocsceseecceccsscncusceceeacts...mentioned in text ........... 7. Index map of Jamaica, Hispanola, Puerto Rico, and Virgin Islands showing...trough occupied northeastern Jamaica. This trough faced the western Jamaica Paleozoic(?) ‘‘backland,”’...modern Yucatan basin, whereas the second segment (Jamaica, Hispanola, Puerto Rico, and the Virgin Islands)...southeastern Cuba, and by the modern Nicaragua Rise in Jamaica (Figs. 1, 13). These ridges are underlain by continentaltype |  | | Journal (article/letter/editorial) | | Lamellar intergrowths of actinolite and hornblende or aluminous actinolite occur in metamorphosed igneous...low ratio. The A1TMcontent of the coexisting actinolite first increases with rising temperature, but...A1TM content of coexisting hornblende-aluminous actinolite successively decreases with rising temperature... M. Tagiri Fig. 1. a Hornblende (dark grey)-actinolite(grey) lamellar intergrowth (HT593), open nicols...nicols, b Hornblende (dark grey)-actinolite(grey)lamellarintergrowth(HT417), open nicols. Fine acicular |  | Torró, L., Garcia-Casco, A., Proenza, J.A., Blanco-Quintero, I.F., Gutiérrez-Alonso, G., Lewis, J.F. (2016) High-pressure greenschist to blueschist facies transition in the Maimón Formation (Dominican Republic) suggests mid-Cretaceous subduction of the Early Cretaceous Caribbean arc. Lithos, 266. 309-331 doi:10.1016/j.lithos.2016.10.026 | Journal (article/letter/editorial) | | assemblage of rocks of the Ozama shear zone (actinolite + phengite + chlorite + epidote + quartz + albite...Schneider et al., 2004; Stanek et al., 2006) and Jamaica (e.g., West et al., 2014; Willner et al., 2016)...phengite s.s., see below), epidote, amphibole (actinolite ± ferri-winchite, see below), albite, stilpnomelane...submillimeter-wide albite-quartz, muscovite-chlorite- and actinolite-rich layers preserving previous Sp-1 in the crenulation...50-1.91 a.p.f.u.; NaB = 0.01-0.40) classify as actinolite and very seldom magnesio-ferri-hornblende, with |  | | Journal (article/letter/editorial) | | Rica: BA = El Baru; TIS = Talamanca. Jamaica: AB = Above Rocks; BM = Blue Mountain; GR = Ginger Ridge. Cuba:...segment, the Greater Antilles arc or arcs (Cuba, Jamaica, Hispaniola, Puerto Rico, and Virgin Islands),...Costa Rica Talamanca El Baru Jamaica Above Rocks Ginger Ridge Blue Mountains Cuba Camagüey alkaline Camagüey...granite (Fig. 3A). Jamaica Granitoid intrusive rocks crop out in the Blue Mountains, Above Rocks, and...and Central inliers of eastern and central Jamaica (Draper, 1986; Lewis and Draper, 1990). Chemical data |  | | Report (issue) | | Geology of the Blue Mountains Region of Oregon, Idaho, and Washington: Petrology and Tectonic Evolution...Evolution of Pre-Tertiary Rocks of thte Blue Mountains Region U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER AVAILABILITY...CENTER, Mississippi Bldg. 3101 Geology of the Blue Mountains Region of Oregon, Idaho, and Washington: Petrology...Tectonic Evolution of Pre-Tertiary Rocks of the Blue Mountains Region TRACY L. VALUER and HOWARD C. BROOKS...tectonic evolution of pre-Tertiary rocks of the Blue Mountains region / Tracy L. Vallier and Howard C. Brooks |  | | Journal (article/letter/editorial) | | maintains offices and a display collection of ores in Portland and issues monthly The Mineral Resources of Oregon... The chief contribution to our knowledge of the Blue Mountain region of eastern Oregon has been made...either Oregon is divided by the great Cascade Mountains into two very diverse regions, western and eastern...lowland west of the Middle and Northern Cascade Mountains." In Orgeon this is known as Willamette Valley...found within this area. 3. "The Middle Cascade Mountains are that portion of the Sierra-Cascade Province |  | Schwartz, Joshua J., Johnson, Kenneth, Miranda, Elena A., Wooden, Joseph L. (2011) The generation of high Sr/Y plutons following Late Jurassic arc–arc collision, Blue Mountains province, NE Oregon. Lithos, 126 (1) 22-41 doi:10.1016/j.lithos.2011.05.005 | Journal (article/letter/editorial) | | following Late Jurassic arc–arc collision, Blue Mountains province, NE Oregon Joshua J. Schwartz a,⁎...geochronology Zircon Hf isotope geochemistry Blue Mountains province a b s t r a c t High Sr/Y plutons...contractional deformation through time. In the Blue Mountains province (NE Oregon), a suite of Late Jurassic...Cordillera (e.g., Salmon River suture zone, Klamath Mountains, Peninsular Ranges) and closely follow major contractional...Sr/Y plutons in the Dixie Butte area of the Blue Mountains province (BMP) in northeastern Oregon (Figs |  | | Report (issue) | | augite with rare diopsde), and hornblende (green, blue-green,brown and basaltic varieties). In the clinopyroxene...minerals identified are staurolite, tremolite/actinolite, sillimanite, chloritoid, glaucophane, tourmaline...noted the existence of blueschist bodies in the Blue Mountains of eastern Oregon and the Cache Creek area...petrology of their sands: U.S. Army Corps Engineers, Portland, Oregon, u npub. rept. Hotz, P.E., Lanphere, M...Clinopyroxene VI VI ro Hornblende fo Tremolite/Actinolite o H VI VI ro o -P- (jO fo O o o q |  | | Journal (issue) | | hair stone when inclosing acicular crystals of actinolite. Inclusions of other minerals are named according...there is, say, actinolite. A fresh influx of silica earries with it particles of the actinolite, and the whole...most famous oi the Smoky Quartz localities. Her mountains teem with a few species of finely crystallized...discovery of a pocket of quartz crystals in the Alps Mountains is given in " The Subterranean World," by Dr....on the north, for about thirty miles, by the Blue Mountains, including the " pot hooks " north of Bloserville |  | | Report (issue) | | the Takilma-Waldo district, Oreg., including the Blue Creek district, by Philip J. Shenon________ (C)...Molybdenite-quartz veins________________________ 222 31. "Blue quartz" veins_______ _ _ 222 32. Detailed map of...Waldo mine__________________ 25. Geologic map of Blue Creek district ___ _ 26; Map showing relation of..._______ Hice ------------------------_-_-_-------Blue Mud__-._...._ ____________-__.___ Intermountain...through an area roughly coincident with the Blue Mountains, which extend over much of the northeast quarter |  | | Journal (article/letter/editorial) | | succession near St. John, N. B.: A.-Laurentian. 1. Portland group, including Division 2, with probably parts... 363 1. Quartzite Division. (a) Heavily bedded blue quartzites, with slightly plumbaginous partings...becoming clouded or zoned with shades of green, purple, blue, buff or pale yellow, often producing a conspicuous...feature of the purple slates. (b) Bluish-gray and blue slates, with lighter gray seams or bands, and including...upper zone of purple slates. In (c) Black, with some blue or gray slates, often highly pyritiferous. metamorphic |  | | Report (issue) | | lineament........................... Klamath Mountains-Blue Mountains lineament................ Concealed plutons...Detroit Reservoir Prospect QuarUville mining district Blue River mining district Bohemia mining district Wind...C are separated by the Klamath MountainsBlue Mountains lineament (Riddihough and others, 1986; Blakely...metavolcanic, and ophiolitic rocks of the Klamath Mountains. The latter rocks are found in several large thrust...flysch and volcanic rocks are present in the Blue Mountains in eastern Oregon (Armstrong and others, 1977) |  | | Report (issue) | | (Beaver Lake Mountains). Bradshaw District (Mineral Range). Fortuna District (Tushar Mountains). Gordon District...District (Tushar Mountains). Granite and North Granite Districts (Mineral Range). Indian Peak District... Newton District (Tushar Mountains). Pine Grove District (Wah Wah Mountains). Pruess (Newhouse) District...District (San Francisco Mountains). Rocky District (Rocky Range). San Francisco (Frisco) District (San Francisco...Francisco Mountains). Star and North Star Districts (Star Range). Sterling District (Red Buttes). Sulphur |  | | Journal (issue) | | and apatite. The amphibolites are hornblende-actinolite amphibolites often with garnet. The plagioclase...antigorite. All the bodies have an outer zone of actinolite of varying width. This is especially the case...in square GS where up to 20 cm long radiating actinolite needles from an outer crust. Some of the bigger...and F5 (fig. 10). In the interfragmentary space actinolite, coarse laminated tale and antigorite are found...structures. A zonal mineral arrangement with an outer actinolite zone and an inner core of tale is also discernible |
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