Baddeleyite: A promising geochronometer for alkaline and basic magmatism

  title={Baddeleyite: A promising geochronometer for alkaline and basic magmatism},
  author={Tamara B. Bayanova},
The paper is devoted to the history of the discovery, petrological and mineralogical characterization, and U-Pb dating of baddeleyite ZrO2, which was separated from various Archean, Proterozoic, and Paleozoic rocks from Fennoscandia. The morphology of this mineral and its U-Pb age values were examined in the Archean carbonatites (2613 ± 18 Ma) of Siilinjarvi, Finland, and gabbronorite dikes (2738 ± 6 Ma) at the Kirovogorskoe deposit. U-Pb isochrons are reported for the baddeleyite-zircon pair… 
Comparative in-situ U–Th–Pb geochronology and trace element composition of baddeleyite and low-U zircon from carbonatites of the Palaeozoic Kovdor alkaline–ultramafic complex, Kola Peninsula, Russia
The most widely used geochronometer for dating geological events is the U–Pb isotope system used on zircon crystals. However, in silica-undersaturated ultramafic and alkaline rocks, baddeleyite
Timing and duration of Palaeoproterozoic events producing ore-bearing layered intrusions of the Baltic Shield: metallogenic, petrological and geodynamic implications
Abstract There are two 300–500 km long belts of Palaeoproterozoic layered intrusions in the Baltic (Fennoscandian) Shield; the Northern (Kola) Belt and the Southern (Fenno-Karelian) Belt. New U–Pb
Significance of Baddeleyite for Paleoproterozoic PGE Deposits with Pt-Pd and Cu-Ni reefs (North-Eastern Fennoscandian Shield): New Results of U-Pb and LA-ICP-MS Studies
Baddeleyite is a significant mineral successfully applied in the U-Pb geochronology for the precise dating of mafic rocks from layered intrusions with the platinum group element (PGE) and Cu-Ni
Emplacement age and Sr–Nd isotopic compositions of the Afrikanda alkaline ultramafic complex, Kola Peninsula, Russia
Abstract The Kola Peninsula is characterized by diverse alkaline magmatism, including alkaline ultramafic, carbonatite, “kimberlite” and agpaitic rocks, although many aspects of the ages of
U-Pb ID-TIMS age of the Tiksheozero carbonatite: expression of 2.0 Ga alkaline magmatism in Karelia, Russia
The Tiksheozero carbonatite in northern Russian Karelia is a transitional type between alkaline ultramafic — carbonatitic and alkaline gabbroic suites. The complex is dominated by pyroxenite with a
Geochronology of Shergottite Meteorites: Using LA-MC-ICP-MS Analysis to Examine U-Th-Pb Systematics of Baddeleyites and Phosphates
I present in-situ analysis of U-Pb systematics in baddeleyite and whitlockite grains from a suite of Martian shergottites. 9 baddeleyite grains (5 from basaltic shergottite NWA 2986 and 4 from
In situ LA-ICPMS Isotopic and Geochronological Studies on Carbonatites and Phoscorites from the Guli Massif, Maymecha-Kotuy, Polar Siberia
In this study we present a fresh isotopic data, as well as U–Pb ages from different REE-minerals in carbonatites and phoscorites of Guli massif using in situ LA-ICPMS technique. The analyses were
Geochronology of carbonatites from the Canadian and Baltic Shields, and the Canadian Cordillera: clues to mantle evolution
Carbonatites are known to range in age from the Archean through to the Recent, with an increasing abundance towards more recent times. Of the known 500 or so carbonatites, however, few have been
Metallogenic Setting and Evolution of the Pados-Tundra Cr-Bearing Ultramafic Complex, Kola Peninsula: Evidence from Sm–Nd and U–Pb Isotopes
The article presents new Sm–Nd and U–Pb geochronological data on rocks of the poorly studied Pados-Tundra Cr-bearing complex. It is part of the Notozero mafic–ultramafic complex (western Kola
Geochemical and spectroscopic investigation of apatite in the Siilinjärvi carbonatite complex: Keys to understanding apatite forming processes and assessing potential for rare earth elements
Abstract The Siilinjarvi phosphate deposit (Finland) is hosted by an Archean carbonatite complex. The main body is composed of glimmerite, carbonatite and combinations thereof. It is surrounded by a


The short duration and anorogenic character of anorthosite magmatism: U-Pb dating of the Rogaland complex, Norway
Abstract U Pb dating of zircon and baddeleyite extracted from orthopyroxene megacrysts yield emplacement ages of 929 ± 2, 932 ± 3, and 932 ± 3 Ma for the Egersund-Ogna, Helleren, andAna-Sira
Global mafic magmatism at 2.45 Ga: Remnants of an ancient large igneous province?
Radiometric dating, including numerous high-precision U-Pb baddeleyite and zircon ages, of Paleoproterozoic flood basalts, dike swarms, and layered mafic intrusions worldwide, indicates that a
Baddeleyite-zircon relationships in coronitic metagabbro, Grenville Province, Ontario: implications for geochronology
In the high grade gneiss terranes of the Grenville Province in Ontario, metagabbro with silicate coronas around primary olivine and Fe-Ti oxide contains trace amounts of both baddeleyite and zircon.
Paragenesis and U-Pb systematics of baddeleyite (ZrO2)
The mineral baddeleyite (ZrO2) occurs in many terrestrial and lunar samples and some achondrite meteorites as a trace constituent that most often crystallizes in the late-stage, most chemically
Crustal evolution in eastern labrador: Constraints from precise U-Pb ages
Abstract New U-Pb ages for rocks of eastern Labrador complement previous U-Pb dates for the Grenville and Makkovik provinces and substantiate the following conclusions. Eastern Labrador consists of
Timing and origin of midcontinent rift alkaline magmatism, North America: evidence from the Coldwell Complex
The Coldwell Complex represents the largest alkaline intrusion associated with the Midcontinent Rift System in North America. This complex contains a plethora of rock types that have previously been
Rodinia the evidence from integrated palaeomagnetism and U-Pb geochronology
Abstract Of many hundreds of well-defined palaeomagnetic poles that have been reported from cratons around the world in the 1700–500 Ma period, only a few are precisely dated. However, such ‘key’
A simple way to extract baddeleyite (ZrO2)
[1] Baddeleyite is a reliable geochronometer for dating the crystallization of mafic and other silica-undersaturated intrusive rocks. Its high U and negligible initial Pb content enable precise age
Comparing the drift of Laurentia and Baltica in the Proterozoic: the importance of key palaeomagnetic poles
Abstract Key palaeomagnetic poles are defined as those which pass basic reliability criteria and are precisely and accurately dated. They allow a more rigorous analysis of Precambrian continental
U-Pb and Sm-Nd ages for the Stillwater Complex and its associated sills and dikes, Beartooth Mountains, Montana: Identification of a parent magma
Seven analyses from two samples of the Lower Banded series of the Stillwater Complex, Montana, yielded a U-Pb zircon-baddeleyite age of 2,705 {plus minus}4 Ma. A more precise age of 2,704 {plus