Výsledky vyhledávání - "Murray W. Hitzman"

U-Pb DATING OF APATITE FROM SILVERMINES DEPOSIT, IRELAND: A MODEL FOR HYDROTHERMAL ORE GENESIS

Autor: Nicholas Andrew Vafeas, Paul Slezak, David Chew, Maurice Brodbeck, Murray. W. Hitzman, Danny Hnatyshin

Publikováno v: Economic Geology.

Uranium-Pb dating of unusual coarse-grained apatite crystals from hydrothermal dolostone breccia in the barite-rich Magcobar zone at the Silvermines deposit, Ireland, indicates an age of 331 ± 5.6 Ma for hydrothermal alteration. This age is in agree

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9dab6b7e6461f282523abc674ddafff4
https://doi.org/10.5382/econgeo.5016

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Diagenetic and Epigenetic Mineralizing Events in the Kalahari Copperbelt, Botswana: Evidence from Re-Os Sulfide Dating and U-Th-Pb Xenotime Geochronology

Autor: M. Stephen Enders, Wesley S. Hall, Holly J. Stein, Catherine Knight, Andrew R.C. Kylander-Clark, Murray W. Hitzman, Yvette D. Kuiper

Publikováno v: Economic Geology. 116:863-881

The ages of sedimentation and copper-silver mineralization in the late Meso- to Neoproterozoic Kalahari Copperbelt in Botswana, an economically significant copper province, have previously been poorly constrained within an ~600 m.y. period that spans

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a65431f27ed6fd81f1260cbd65ce2116
https://doi.org/10.5382/econgeo.4809

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Petrogenesis of the Limerick Igneous Suite: insights into the causes of post-eruptive alteration and the magmatic sources underlying the Iapetus Suture in SW Ireland

Autor: Paul Slezak, Murray W. Hitzman, David van Acken, Eoin Dunlevy, David Chew, Foteini Drakou, Mark Holdstock

The Limerick Igneous Suite (LIS) in County Limerick, SW Ireland, contains two distinct basaltic igneous units: the Knockroe and Knockseefin, which are expressed as hypabyssal intrusions, porphyritic dykes, diatremes, lava flows, agglomerates and tuff

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f00dddd12fa23744929b78e7692d021d

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Time for an upgrade: the importance of weathering for increasing ore tenor in carbonatite complexes

Autor: Mandi B. Hutchinson, Murray W. Hitzman, Paul Slezak, Richard F. Wendlandt, Carl Spandler

Publikováno v: Goldschmidt2021 abstracts.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6a4823a052887fbec7535e4c2181af47
https://doi.org/10.7185/gold2021.6807

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Igneous and detrital zircon U-Pb and Lu-Hf geochronology of the late Meso- to Neoproterozoic northwest Botswana rift: Maximum depositional age and provenance of the Ghanzi Group, Kalahari Copperbelt, Botswana and Namibia

Autor: Murray W. Hitzman, Wesley S. Hall, Richard J. Moscati, M. Stephen Enders, Andrew R.C. Kylander-Clark, Christopher S. Holm-Denoma, Yvette D. Kuiper, Piret Plink-Björklund

Publikováno v: Precambrian Research. 318:133-155

New igneous and detrital zircon laser ablation-inductively coupled plasma mass spectrometry (LA-ICPMS) U-Pb geochronology and Lu-Hf isotopic data are presented for the Mesoproterozoic Kgwebe Formation and the unconformably overlying Ghanzi Group in n

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::20a1ba6b77ff0c774d6735a25826e6da
https://doi.org/10.1016/j.precamres.2018.10.001

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Mineral Potential Mapping in an Accreted Island-Arc Setting Using Aeromagnetic Data: An Example from Southwest Alaska

Autor: Murray W. Hitzman, Thomas Monecke, Paul A. Bedrosian, Eric D. Anderson, Wendy Zhou

Publikováno v: Economic Geology. 112:375-396

The distribution of volcanogenic massive sulfide (VMS), porphyry-epithermal, Alaska-type ultramafic-mafic complexes, intrusion-related Au, and granitoid Sn-W ore deposits in southwest Alaska supports current metallogenic models linking the formation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::03a85cc56184621dfa29216e76d0fb36
https://doi.org/10.2113/econgeo.112.2.375

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A Special Issue Devoted to Proterozoic Iron Oxide-Apatite (±REE) and Iron Oxide Copper-Gold and Affiliated Deposits of Southeast Missouri, USA, and the Great Bear Magmatic Zone, Northwest Territories, Canada: Preface

Autor: Murray W. Hitzman, Louise Corriveau, John F. Slack

Publikováno v: Economic Geology. 111:1803-1814

This special issue is focused on the geology and mineral deposits in the Mesoproterozoic St. Francois Mountains terrane of southeast Missouri, United States, and in the Paleoproterozoic Great Bear magmatic zone of Northwest Territories, Canada. Contr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::823374625431cdcdd16eec1414a66f34
https://doi.org/10.2113/econgeo.111.8.1803

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GUELB MOGHREIN: AN UNUSUAL CARBONATE-HOSTED IRON OXIDE COPPER-GOLD DEPOSIT IN MAURITANIA, NORTHWEST AFRICA

Autor: Murray W. Hitzman, Michael J. Kirschbaum

Publikováno v: Economic Geology. 111:763-770

The Guelb Moghrein Cu-Au deposit occurs within metacarbonate bodies derived from sedimentary carbonate beds of probable late Archean age. The metacarbonate lenses are enclosed within mafic meta-igneous rocks that display a coarse-grained, amphibolite

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3b0899d24e6a8c8498179139146b7193
https://doi.org/10.2113/econgeo.111.3.763

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