Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Edward Farrar"'
The giant Imiter silver deposit: Neoproterozoic epithermal mineralization in the Anti-Atlas, Morocco
Autor:
Rachid Zyadi, Gilles Levresse, Moulay Rachid Azizi-Samir, Dominique Gasquet, Alain Cheilletz, Edward Farrar, Douglas A. Archibald
Publikováno v:
Mineralium Deposita. 37:772-781
The world-class Imiter silver deposit, in the Anti-Atlas Mountains of Morocco, is a Neoproterozoic epithermal vein deposit genetically associated with a felsic volcanic event, and formed within a regional extensional tectonic regime. Rhyolitic volcan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed5ae47a423c965dab7b2d84ce6dc4af
https://doi.org/10.1007/s00126-002-0317-0
https://doi.org/10.1007/s00126-002-0317-0
Autor:
James K. Mortensen, Alan H. Clark, C. Jay Hodgson, David A. Love, Douglas A. Archibald, Edward Farrar
Publikováno v:
Economic Geology. 93:437-462
The lower Eocene Mount Skukum epithermal Au deposit, southwestern Yukon Territory (60 degrees 13' N, 135 degrees 28' W), exhibits both hypogene alteration and mineralization facies characteristic of the adularia-sericite deposit type, and barren adva
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6ae2832361f772c79f6c182a817c060
https://doi.org/10.2113/gsecongeo.93.4.437
https://doi.org/10.2113/gsecongeo.93.4.437
Publikováno v:
Journal of the Geological Society. 155:595-598
The long-controversial age of the Lizard ophiolite is resolved by U-Pb dating of three single magmatic zircons from a plagiogranite dyke near Porthkerris Point. This demonstrates that the axial oceanic crust was undergoing extensional ductile shearin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::203631f0dc80e1e32664b33e5b8f3760
https://doi.org/10.1144/gsjgs.155.4.0595
https://doi.org/10.1144/gsjgs.155.4.0595
Publikováno v:
Economic Geology. 93:326-337
Sensibly identical laser probe 40 Ar/ 39 Ar dates of 32.9 + or - 0.5 (2Sigma ) and 32.9 + or - 0.6 Ma are determined for, respectively, early-stage hydrothermal biotite and late-stage hydrothermal muscovite from the giant Rosario porphyry copper depo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2eef8afe42890e6a65e13f0c86872eef
https://doi.org/10.2113/gsecongeo.93.3.326
https://doi.org/10.2113/gsecongeo.93.3.326
Autor:
Margarita López-Martínez, J. A. Hanes, Gilles Ruffet, Douglas A. Archibald, Gilbert Féraud, Amabel Ortega-Rivera, R. G. Gastil, M. Zentilli, Edward Farrar, David L. Kimbrough
Publikováno v:
Geological Society of America Bulletin. 109:728-745
The tectonothermal history of the four major phases of the Sierra San Pedro Martir pluton and surrounding metamorphic rocks of the Mesozoic Peninsular Ranges batholith of Baja California is presented on the basis of U/Pb, 40 Ar/ 39 Ar step-heating, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::018920094250c07ef040fd34060c941b
https://doi.org/10.1130/0016-7606(1997)109<0728:ccotta>2.3.co
https://doi.org/10.1130/0016-7606(1997)109<0728:ccotta>2.3.co
Publikováno v:
Journal of South American Earth Sciences. 10:223-245
The Cordillera de Carabaya region of the southern Peruvian Andes preserves a collage of Tertiary igneous suites, including extrusive and hypabyssal units, that are herein assigned to the Crucero Supergroup and Crucero Intrusive Supersuite, respective
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b623b994e41ece333e68a24b2934d3fc
https://doi.org/10.1016/s0895-9811(97)00023-0
https://doi.org/10.1016/s0895-9811(97)00023-0
Publikováno v:
Journal of the Geological Society. 154:403-417
The Man of War Gneiss is a variably deformed meta-igneous body that ranges in composition from gabbro to tonalite and comprises part of the basal structural slice of the Lizard ophiolite complex, SW England. U-Pb dating of zircon demonstrates that th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b324f3d6d3124c52213ac1f6e641e15
https://doi.org/10.1144/gsjgs.154.3.0403
https://doi.org/10.1144/gsjgs.154.3.0403
Publikováno v:
Geochimica et Cosmochimica Acta. 60:4653-4671
The Saint Sylvestre-western Marche Leucogranite Complex (LC) is a composite pluton emplaced 324 m.y. ago in the Variscan continental crust of the northwestern Limousin, French Massif Central. Petrographic, structural, and new isotopic data are used t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4357253affd61fad56680e7ca102c243
https://doi.org/10.1016/s0016-7037(96)00291-8
https://doi.org/10.1016/s0016-7037(96)00291-8
Publikováno v:
Journal of South American Earth Sciences. 9:381-392
The Cayconi Formation of the Crucero Basin, Puno Department, southeastern Peru, has been described as a 800–1000 m sequence of Oligocene and Miocene fanglomerate and lacustrine sedimentary rocks, interlayered with mafic and silicic volcanic rocks,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddc754faef1c038baadcd821714793c5
https://doi.org/10.1016/s0895-9811(96)00021-1
https://doi.org/10.1016/s0895-9811(96)00021-1
Publikováno v:
Chemical Geology. 129:307-324
A number of standards used for KAr and 40Ar39Ar dating have been intercalibrated. Multiple splits (∼ 15–40 mg each) of MMhb-1, SB-3 Biotite, LP-6 Biotite 40–60#, GA1550 Biotite, Fish Canyon Tuff-3 Biotite, Taylor Creek Rhyolite Sanidine, Ber
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f6d885b76cdd60e4ef895636fa6fd47
https://doi.org/10.1016/0009-2541(95)00154-9
https://doi.org/10.1016/0009-2541(95)00154-9