Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies
if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the
same subfield and year (this is the minimum needed to enter the top 1%, not the average
within it), or reaches the top citation threshold in at least one of its specific research
topics.
An internally consistent thermodynamic data set for phases of petrological interest
19984.2k citationsT. J. B. Holland, Roger PowellJournal of Metamorphic Geologyprofile →
An improved and extended internally consistent thermodynamic dataset for phases of petrological interest, involving a new equation of state for solids
20111.9k citationsT. J. B. Holland, Roger PowellJournal of Metamorphic Geologyprofile →
An internally consistent dataset with uncertainties and correlations: 3. Applications to geobarometry, worked examples and a computer program
19881.4k citationsRoger Powell, T. J. B. HollandJournal of Metamorphic Geologyprofile →
Activity?composition relations for phases in petrological calculations: an asymmetric multicomponent formulation
20031.2k citationsT. J. B. Holland, Roger Powellprofile →
An enlarged and updated internally consistent thermodynamic dataset with uncertainties and correlations: the system K2O–Na2O–CaO–MgO–MnO–FeO–Fe2O3–Al2O3–TiO2–SiO2–C–H2–O2
19901.0k citationsT. J. B. Holland, Roger PowellJournal of Metamorphic Geologyprofile →
New mineral activity–composition relations for thermodynamic calculations in metapelitic systems
2013989 citationsR. W. White, Roger Powell et al.Journal of Metamorphic Geologyprofile →
Progress relating to calculation of partial melting equilibria for metapelites
2007967 citationsR. W. White, Roger Powell et al.Journal of Metamorphic Geologyprofile →
Calculating phase diagrams involving solid solutions via non‐linear equations, with examples using THERMOCALC
1998801 citationsRoger Powell, T. J. B. Holland et al.Journal of Metamorphic Geologyprofile →
Activity–composition relations for the calculation of partial melting equilibria in metabasic rocks
2016682 citationsEleanor Green, R. W. White et al.Journal of Metamorphic Geologyprofile →
Calculation of partial melting equilibria in the system Na2O–CaO–K2O–FeO–MgO–Al2O3–SiO2–H2O (NCKFMASH)
2001670 citationsR. W. White, Roger Powell et al.Journal of Metamorphic Geologyprofile →
A garnet–hornblende geothermometer: calibration, testing, and application to the Pelona Schist, Southern California
1984653 citationsRoger Powell et al.Journal of Metamorphic Geologyprofile →
The interpretation of reaction textures in Fe‐rich metapelitic granulites of the Musgrave Block, central Australia: constraints from mineral equilibria calculations in the system K2O–FeO–MgO–Al2O3–SiO2–H2O–TiO2–Fe2O3
2002629 citationsR. W. White, Roger Powell et al.Journal of Metamorphic Geologyprofile →
Regression diagnostics and robust regression in geothermometer/geobarometer calibration: the garnet‐clinopyroxene geothermometer revisited
1985624 citationsRoger PowellJournal of Metamorphic Geologyprofile →
Mixing properties and activity-composition relationships of chlorites in the system MgO-FeO-Al2O3-SiO2-H2O
1998603 citationsT. J. B. Holland, Roger Powell et al.profile →
Formation of gold deposits: a metamorphic devolatilization model
2010504 citationsG. Neil Phillips, Roger PowellJournal of Metamorphic Geologyprofile →
An order-disorder model for omphacitic pyroxenes in the system jadeite-diopside-hedenbergite-acmite, with applications to eclogitic rocks
2007496 citationsEleanor Green, T. J. B. Holland et al.American Mineralogistprofile →
This map shows the geographic impact of Roger Powell's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Roger Powell with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Roger Powell more than expected).
This network shows the impact of papers produced by Roger Powell. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Roger Powell. The network helps show where Roger Powell may publish in the future.
Co-authorship network of co-authors of Roger Powell
This figure shows the co-authorship network connecting the top 25 collaborators of Roger Powell.
A scholar is included among the top collaborators of Roger Powell based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with Roger Powell. Roger Powell is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Štípská, Pavla, Roger Powell, Martin Ráček, & Ondrej Lexa. (2014). Interaction of eclogite with felsic granulite in the orogenic root, Bohemian Massif. Geologia Sudetica. 42.
White, R. W., et al.. (2013). New mineral activity–composition relations for thermodynamic calculations in metapelitic systems. Journal of Metamorphic Geology. 32(3). 261–286.989 indexed citations breakdown →
Holland, T. J. B. & Roger Powell. (2011). An improved and extended internally consistent thermodynamic dataset for phases of petrological interest, involving a new equation of state for solids. Journal of Metamorphic Geology. 29(3). 333–383.1873 indexed citations breakdown →
10.
Phillips, G. Neil & Roger Powell. (2010). Formation of gold deposits: a metamorphic devolatilization model. Journal of Metamorphic Geology. 28(6). 689–718.504 indexed citations breakdown →
11.
White, R. W., Roger Powell, & T. J. B. Holland. (2007). Progress relating to calculation of partial melting equilibria for metapelites. Journal of Metamorphic Geology. 25(5). 511–527.967 indexed citations breakdown →
12.
White, R. W., Roger Powell, & G. L. Clarke. (2002). The interpretation of reaction textures in Fe‐rich metapelitic granulites of the Musgrave Block, central Australia: constraints from mineral equilibria calculations in the system K2O–FeO–MgO–Al2O3–SiO2–H2O–TiO2–Fe2O3. Journal of Metamorphic Geology. 20(1). 41–55.629 indexed citations breakdown →
13.
Holland, T. J. B. & Roger Powell. (1998). An internally consistent thermodynamic data set for phases of petrological interest. Journal of Metamorphic Geology. 16(3). 309–343.4216 indexed citations breakdown →
14.
Carpenter, Michael A., Roger Powell, & Ekhard K. H. Salje. (1994). Thermodynamics of nonconvergent cation ordering in minerals: I. An alternative approach. American Mineralogist. 79. 1053–1067.46 indexed citations
15.
Ehlers, K., et al.. (1994). Cooling rate histories from garnet + biotite equilibrium. American Mineralogist. 79. 737–744.33 indexed citations
16.
Powell, Roger & T. J. B. Holland. (1993). The applicability of least squares in the extraction of thermodynamic data from experimentally bracketed mineral equilibria. American Mineralogist. 78. 107–112.16 indexed citations
17.
Will, Thomas & Roger Powell. (1992). Activity-composition relationships in multicomponent amphiboles; an application of Darken's quadratic formalism. American Mineralogist. 77. 954–966.17 indexed citations
18.
Powell, Roger & T. J. B. Holland. (1990). Calculated mineral equilibria in the pelite system, KFMASH (K 2 O-FeO-MgO-Al 2 O 3 -SiO 2 -H 2 O). American Mineralogist. 75. 367–380.164 indexed citations
19.
Sandiford, Mike & Roger Powell. (1988). Pyroxene exsolution in granulites from Fyfe Hills, Enderby Land, Antarctica; evidence for 1000 degrees C metamorphic temperatures in Archean continental crust; reply. American Mineralogist. 73. 434–438.62 indexed citations
20.
Powell, Roger. (1987). Darken's quadratic formalism and the thermodynamics of minerals. American Mineralogist. 72. 1–11.27 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
bibliographic database. While OpenAlex provides broad and valuable coverage of the global
research landscape, it—like all bibliographic datasets—has inherent limitations. These include
incomplete records, variations in author disambiguation, differences in journal indexing, and
delays in data updates. As a result, some metrics and network relationships displayed in
Rankless may not fully capture the entirety of a scholar's output or impact.