Thomson Scientific Analyzes 10 Years of Geology Research To Rank the Most-Cited Published Papers

    Newly Published Study Narrows Focus On Geology, Ranking Institutions,
    Researchers and Journals Based on Total Citations

    PHILADELPHIA and LONDON, Aug. 10 /CNW/ - Thomson Scientific, part of The
Thomson Corporation (NYSE:   TOC; TSX: TOC) and leading provider of information
solutions to the worldwide research and business communities, today announced
the results of a survey analyzing citation patterns in the field of geology.
In the July/August issue of Science Watch, data from 224 journals and more
than 150,000 papers published during the last decade (and listed in Thomson
Scientific's Web of Science(R)) were analyzed to rank institutions, authors
and journals based on total citations. Science Watch is a subscription
newsletter that uses unique citation data from Thomson Scientific to provide
rankings, interviews and reports on today's most significant science.
    "When institutions are ranked according to total citations, larger
institutions tend to have an advantage due to the sheer abundance of published
papers they produce," said Christopher King, editor of Science Watch.
"Therefore, it is not surprising that large governmental institutions such as
the U.S. Geological Survey and NASA top this list of geology research
    The U.S. Geological Survey garnered more than 23,000 citations over the
past 10 years, while NASA amassed more than 20,000 citations, making them the
first and second most-cited, respectively.
    "It is important to note that smaller, more diverse institutions also
appear on this list," added King. "Namely, the University of Colorado ranked
third with more than 15,000 total citations. The University of Washington also
makes a strong showing, ranking sixth."
    Out of the top 10 most highly cited institutions, six are located in the
United States. Institutions located in China, France, Russia and the United
Kingdom round out the top-10 list, each having been cited more than 11,000

    Top Ten Institutions Ranked by Citations 1996-2007

    Country                                                 Total Citations,

    U.S. Geological Survey                                       23,172

    NASA                                                         20,303
    University of Colorado                                       15,365
    Russian Academy of Sciences                                  15,019
    Chinese Academy of Sciences                                  14,937
    University of Washington                                     12,934
    University of Cambridge                                      12,573
    California Institute of Technology                           12,459
    University of California, Berkeley                           12,139
    Centre National De La Recherche Scientifique (France)        11,993

    The study also looks at the 25 most highly cited Geosciences authors over
the past decade. Frank C. Hawthorne, a crystallography/mineralogy researcher
from Canada's University of Manitoba, took top honors with 2,204 citations.
(His most-cited work on the nomenclature of minerals known as amphiboles was
cited more than 260 times.) Hawthorne is the only researcher to have been
ranked in Science Watch's previous Geosciences report in 2001 and this current

            Top Ten Highly Cited Authors in Geosciences, 1996-2007

    Name            Institution               Department/            Total
                                              Specialty              Number

    Frank C.        University of Manitoba    Crystallography/        2,204
     Hawthorne                                Mineralogy

    Roger Powell    University of Melbourne   Metamorphic Geology     1,825
    Charles W.      University of             Space Physics           1,822
     Carlson         California, Berkeley
    Timothy J.B.    University of Cambridge   Petrology               1,592
    Andre Balogh    Imperial College London   Space Physics           1,568
    H. John B.      University of Bergen      Ecology/Palaeoecology   1,548
     Birks           (Norway)
    Peter C. Burns  University of Notre Dame  Mineralogy              1,414
    Henri Reme      CNRS, CESR, Toulouse      Space Science           1,335
    Joel D. Grice   Canadian Museum of        Mineralogy              1,330
    Juhn G. Liou    Stanford University       Geology/Environmental   1,327

    The U.S. is home to the highest number of most-cited researchers, with
three researchers on the list representing U.S. based institutions. The United
Kingdom took second place with two researchers, while Australia, Canada,
France and Norway each had one researcher in the top 10.
    Looking at Geosciences journals, Geophysical Research Letters topped the
most-cited journals category by publishing more than 13,000 papers and
garnering more than 116,000 citations. Geology ranked second with more than
42,000 citations and Journal of Hydrology rounded the top three with more than

            Top Ten Most-Cited Journals in Geosciences, 1996-2007

                                                             Total Number
    Journal                                                  of Citations

    Geophysical Research Letters                                116,069

    Geology                                                      42,202
    Journal of Hydrology                                         22,157
    American Mineralogist                                        20,185
    Palaeogeorgraphy/climatology/ecology                         20,130
    Quaternary Science Review                                    17,672
    Marine Geology                                               16,060
    Global Biogeochemistry Cycles                                15,648
    Contrib. Mineralogy & Petrology                              15,097
    Geol. Soc. American Bulletin                                 13,243
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For further information:

For further information: NOTE TO EDITOR: For information on subscribing
to Science Watch, contact Christopher King, tel: (215) 823-5341. For more
information about these rankings and for a full list of the most-cited
institutions, researchers and journals contact Chris Lukach at (856) 988-6560,
ext. 15 or For further information: Chris Lukach of
Anne Klein & Associates for Thomson Scientific, (856) 988-6560 ext. 15,

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