World's Best Scientists 2026 revealed!
Ian R. Fletcher

Ian R. Fletcher

D-Index & Metrics

Environmental Sciences

D-Index
69
Citations
12299
World Ranking
1826
National Ranking
83

Overview

What is he best known for?

The fields of study he is best known for:

  • Sedimentary rock
  • Basalt
  • Igneous rock

His primary areas of investigation include Geochemistry, Zircon, Geochronology, Archean and Monazite. His work in the fields of Geochemistry, such as Isochron, Metamictization and Precambrian, intersects with other areas such as Shrimp and Phyllic alteration. His Zircon research is multidisciplinary, relying on both Orogeny, Tectonics, Craton, Felsic and Petrology.

Ian R. Fletcher has included themes like Hydrothermal circulation, Molybdenite, Cretaceous and Terrane in his Geochronology study. His work deals with themes such as Metamorphism, Granulite and Dharwar Craton, which intersect with Archean. The various areas that Ian R. Fletcher examines in his Monazite study include Microprobe and Mineralization.

His most cited work include:

  • Reassessing the first appearance of eukaryotes and cyanobacteria (429 citations)
  • Advances in SHRIMP geochronology and their impact on understanding the tectonic and metallogenic evolution of southern Brazil (141 citations)
  • Archean-Proterozoic Evolution of Indian Charnockites: Isotopic and Geochemical Evidence from Granulites of the Eastern Ghats Belt (138 citations)

What are the main themes of his work throughout his whole career to date?

Ian R. Fletcher mainly focuses on Geochemistry, Zircon, Geochronology, Archean and Craton. The study of Geochemistry is intertwined with the study of Petrology in a number of ways. The concepts of his Zircon study are interwoven with issues in Pilbara Craton, Felsic, Igneous rock and Yilgarn Craton.

Ian R. Fletcher has researched Geochronology in several fields, including Peridotite, Magmatism, Anorthosite and Ultramafic rock. His study in Archean is interdisciplinary in nature, drawing from both Crust, Gneiss, Proterozoic and Dharwar Craton. In his research on the topic of Isochron, Country rock is strongly related with Granulite.

He most often published in these fields:

  • Geochemistry (94.03%)
  • Zircon (46.27%)
  • Geochronology (35.82%)

What were the highlights of his more recent work (between 2014-2019)?

  • Geochemistry (94.03%)
  • Craton (26.87%)
  • Zircon (46.27%)

In recent papers he was focusing on the following fields of study:

His primary areas of study are Geochemistry, Craton, Zircon, Geochronology and Pilbara Craton. Much of his study explores Geochemistry relationship to Proterozoic. His Zircon study integrates concerns from other disciplines, such as Foreland basin, Structural basin, Siliciclastic, Igneous rock and Petrology.

His studies in Pilbara Craton integrate themes in fields like Felsic and Archean. In his study, Transtension, Intraplate earthquake and Precambrian is strongly linked to Sedimentary basin, which falls under the umbrella field of Metamorphism. His Monazite research is multidisciplinary, incorporating perspectives in Sedimentary depositional environment and Mineralization.

Between 2014 and 2019, his most popular works were:

  • In situ U-Pb geochronology of xenotime and monazite from the Abra polymetallic deposit in the Capricorn Orogen, Australia: Dating hydrothermal mineralization and fluid flow in a long-lived crustal structure (37 citations)
  • The timing of gold mineralization across the eastern Yilgarn craton using U–Pb geochronology of hydrothermal phosphate minerals (35 citations)
  • Petrogenesis of the ̃2·77 Ga Monts de Cristal Complex, Gabon: Evidence for Direct Precipitation of Pt-arsenides from Basaltic Magma (32 citations)

In his most recent research, the most cited papers focused on:

  • Basalt
  • Igneous rock
  • Sedimentary rock

Ian R. Fletcher spends much of his time researching Geochemistry, Craton, Geochronology, Monazite and Sedimentary depositional environment. Ian R. Fletcher interconnects Terrane and Yilgarn Craton in the investigation of issues within Geochemistry. His Terrane research includes themes of Structural basin, Inversion, Provenance, Petrology and Pilbara Craton.

His research in Geochronology intersects with topics in Greenschist and Metamorphic facies. His study brings together the fields of Mineralization and Monazite. His Zircon study combines topics in areas such as Magmatism and Geomorphology.

Best Publications

  • A New Understanding of the Provinces of the Amazon Craton Based on Integration of Field Mapping and U-Pb and Sm-Nd Geochronology

    João Orestes Schneider Santos;Léo Afraneo Hartmann;Henri Eugene Gaudette;David Ian Groves

  • Reassessing the first appearance of eukaryotes and cyanobacteria

    Birger Rasmussen;Ian R. Fletcher;Jochen J. Brocks;Matt R. Kilburn

  • The neoproterozoic Mantiqueira Province and its African connections: a zircon-based U-Pb geochronologic subdivision for the Brasiliano/Pan-African systems of orogens

    Luiz Carlos da Silva;Neal J. McNaughton;Richard Armstrong;Léo Afraneo Hartmann

  • 1.6 Ga U-Pb zircon age for the Chorhat Sandstone, lower Vindhyan, India: Possible implications for early evolution of animals

    Birger Rasmussen;Pradip K. Bose;Subir Sarkar;Santanu Banerjee

  • Advances in SHRIMP geochronology and their impact on understanding the tectonic and metallogenic evolution of southern Brazil

    L.A. Hartmann;J.A.D. Leite;L.C. Da Silva;M.V.D. Remus

  • SHRIMP U-Pb dating of the preeruption growth history of zircons from the 340 ka Whakamaru Ignimbrite, New Zealand: Evidence for >250 k.y. magma residence times

    Stuart J. A. Brown;Ian R. Fletcher

  • Pre-Variscan geological events in the Austrian part of the Bohemian Massif deduced from U-Pb zircon ages

    Gertrude Friedl;Fritz Finger;Jean-Louis Paquette;Albrecht von Quadt

  • Archean-Proterozoic Evolution of Indian Charnockites: Isotopic and Geochemical Evidence from Granulites of the Eastern Ghats Belt

    D. K. Paul;T. Ray Barman;N. J. McNaughton;I. R. Fletcher

  • Deducing the ancestry of terranes: SHRIMP evidence for South America–derived Gondwana fragments in central Europe

    Gertrude Friedl;Fritz Finger;Neal J. McNaughton;Ian R. Fletcher

  • Metallogenesis of the Carajás Mineral Province, Southern Amazon Craton, Brazil: Varying styles of Archean through Paleoproterozoic to Neoproterozoic base- and precious-metal mineralisation

    Christian J. Grainger;David I. Groves;Fernando H.B. Tallarico;Fernando H.B. Tallarico;Ian R. Fletcher

  • Correlation of Paleoproterozoic glaciations based on U–Pb zircon ages for tuff beds in the Transvaal and Huronian Supergroups

    Birger Rasmussen;Andrey Bekker;Ian R. Fletcher

  • Age, source, and regional stratigraphy of the Roraima Supergroup and Roraima-like outliers in northern South America based on U-Pb geochronology

    João Orestes Schneider Santos;Paul Edwin Potter;Nélson Joaquim Reis;Léo Afraneo Hartmann

  • Discoidal impressions and trace-like fossils more than 1200 million years old.

    Birger Rasmussen;Stefan Bengtson;Ian R. Fletcher;Neal J. McNaughton

  • Geology and SHRIMP U-Pb Geochronology of the Igarapé Bahia Deposit, Carajás Copper-Gold Belt, Brazil: An Archean (2.57 Ga) Example of Iron-Oxide Cu-Au-(U-REE) Mineralization

    Fernando H. B. Tallarico;Bernardino R. Figueiredo;David I. Groves;Natalie Kositcin

  • Dating low-grade metamorphic events by SHRIMP U-Pb analysis of monazite in shales

    Birger Rasmussen;Ian R. Fletcher;Neal J. McNaughton

  • Isotopic dating of the migration of a low-grade metamorphic front during orogenesis

    Birger Rasmussen;Ian R. Fletcher;Stephen Sheppard

  • Textural and geochemical discrimination between xenotime of different origin in the Archaean Witwatersrand Basin, South Africa

    Natalie Kositcin;Neal J. McNaughton;Brendan J. Griffin;Ian R. Fletcher

  • Triassic mineralization with Cretaceous overprint in the Dahu Au–Mo deposit, Xiaoqinling gold province: Constraints from SHRIMP monazite U–Th–Pb geochronology

    Nuo Li;Yan-Jing Chen;Yan-Jing Chen;Ian R. Fletcher;Qing-Tao Zeng

  • Giant iron-ore deposits of the Hamersley province related to the breakup of Paleoproterozoic Australia: new insights from in situ SHRIMP dating of baddeleyite from mafic intrusions

    Stefan G. Müller;Bryan Krapež;Mark E. Barley;Ian R. Fletcher

  • Age constraints on Tarkwaian palaeoplacer and lode-gold formation in the Tarkwa-Damang district, SW Ghana

    Jon-Philippe Pigois;David I. Groves;Ian R. Fletcher;Neal J. McNaughton

  • Matrix effects and calibration limitations in ion probe U-Pb and Th-Pb dating of monazite

    Ian R. Fletcher;Neal J. McNaughton;William J. Davis;Birger Rasmussen

  • Detrital zircon U–Pb ages and Hf-isotope systematics from the Gadag Greenstone Belt: Archean crustal growth in the western Dharwar Craton, India

    D. Srinivasa Sarma;N.J. McNaughton;Elena Belusova;M. Ram Mohan

  • Timing and evolution of multiple Paleoproterozoic magmatic arcs in the Tapajós Domain, Amazon Craton: constraints from SHRIMP and TIMS zircon, baddeleyite and titanite U-Pb geochronology

    J.O. Santos;O.B. Van Breemen;David Groves;L.A. Hartmann

  • A comparative study of the geochemical and isotopic systematics of late archaean flood basalts from the pilbara and kaapvaal cratons

    D.R. Nelson;A.F. Trendall;J.R. de Laeter;N.J. Grobler

  • Timing of gold mineralization in the Hutti gold deposit, Dharwar Craton, South India

    D.S. Sarma;Nicholas Mcnaughton;I.R. Fletcher;David Groves

  • Two collisions, two sutures: Punctuated pre-1950 Ma assembly of the West Australian Craton during the Ophthalmian and Glenburgh Orogenies

    S.P. Johnson;S. Sheppard;B. Rasmussen;M.T.D. Wingate

  • Archaean gold mineralization synchronous with late cratonization of the Western Dharwar Craton, India: 2.52 Ga U–Pb ages of hydrothermal monazite and xenotime in gold deposits

    D. Srinivasa Sarma;Ian R. Fletcher;Birger Rasmussen;Neal J. McNaughton

  • Metamorphic replacement of mineral inclusions in detrital zircon from Jack Hills, Australia: Implications for the Hadean Earth

    Birger Rasmussen;Ian R. Fletcher;Janet R. Muhling;Courtney J. Gregory

  • UPb SHRIMP and SmNd age constraints on the timing and sources of the Pan-African Cape Granite Suite, South Africa

    L.C. Da Silva;P. Gresse;R. Scheepers;Neal Mcnaughton

  • SHRIMP zircon and titanite U-Pb ages, Lu-Hf isotope signatures and geochemical constraints for ∼2.56 Ga granitic magmatism in Western Dharwar Craton, Southern India: Evidence for short-lived Neoarchean episodic crustal growth?

    M. Ram Mohan;D. Srinivasa Sarma;Neal J. McNaughton;Ian R. Fletcher

  • Origin of carbonatites in the South Qinling orogen: Implications for crustal recycling and timing of collision between the South and North China Blocks

    Cheng Xu;Anton R. Chakhmouradian;Rex N. Taylor;Jindrich Kynicky

  • SmNd geochronology of greenstone belts in the Yilgarn Block, Western Australia

    I.R. Fletcher;K.J.R. Rosman;I.R. Williams;A.H. Hickman

  • Geochronological constraints on the age of a Permo–Triassic impact event: U–Pb and 40Ar/39Ar results for the 40 km Araguainha structure of central Brazil

    Eric Tohver;C Lana;P. A. Cawood;P. A. Cawood;I R Fletcher

  • In situ U–Th–Pb geochronology of monazite and xenotime from the Jack Hills belt: Implications for the age of deposition and metamorphism of Hadean zircons

    Birger Rasmussen;Ian R. Fletcher;Janet R. Muhling;Simon A. Wilde

  • Sm‐Nd model ages across the margins of the Archaean Yilgarn Block, Western Australia — III. The western margin

    I. R. Fletcher;S. A. Wilde;K. J. R. Rosman

  • The timing of gold mineralization across the eastern Yilgarn craton using U–Pb geochronology of hydrothermal phosphate minerals

    Noreen Vielreicher;David Groves;Neal McNaughton;Ian Fletcher

Frequent Co-Authors

Birger Rasmussen
Birger Rasmussen University of Western Australia
Janet R. Muhling
Janet R. Muhling University of Western Australia
Neal J. McNaughton
Neal J. McNaughton Curtin University
Jian-Wei Zi
Jian-Wei Zi Curtin University
Bryan Krapež
Bryan Krapež Guilin University of Technology
Simon A. Wilde
Simon A. Wilde Curtin University
David I. Groves
David I. Groves University of Western Australia
Michael T.D. Wingate
Michael T.D. Wingate University of Western Australia
Christopher L. Kirkland
Christopher L. Kirkland Curtin University
Wolfgang Maier
Wolfgang Maier Cardiff University

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