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.
Petrology and geochemistry of Camiguin Island, southern Philippines: insights to the source of adakites and other lavas in a complex arc setting
This map shows the geographic impact of P. E. Janney'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 P. E. Janney with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites P. E. Janney more than expected).
This network shows the impact of papers produced by P. E. Janney. 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 P. E. Janney. The network helps show where P. E. Janney may publish in the future.
Co-authorship network of co-authors of P. E. Janney
This figure shows the co-authorship network connecting the top 25 collaborators of P. E. Janney.
A scholar is included among the top collaborators of P. E. Janney 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 P. E. Janney. P. E. Janney is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Spivak-Birndorf, L. J., M. Wadhwa, & P. E. Janney. (2012). ^6^0Fe-^6^0Ni Systematics of Chainpur Chondrules and the Plutonic Angrites Northwest Africa 4590 and 4801. LPI. 2861.7 indexed citations
5.
Janney, P. E. & David R. Bell. (2011). Southern African Kimberlites and Their Megacrysts: Pb-Sr-Nd-Hf Isotopes Define the Link. AGUFM. 2011.1 indexed citations
6.
Morris, M. A., P. E. Janney, R. Hines, & M. Wadhwa. (2011). 26Al-26Mg Systematics of Selected Chondrules from Allende and Semarkona. Lunar and Planetary Science Conference. 2773.1 indexed citations
7.
Heber, V. S., A. J. G. Jurewicz, P. E. Janney, et al.. (2011). Mg Isotopic Composition of the Solar Wind by SIMS Analysis of Genesis Targets. M&PSA. 74. 5510.
8.
Brennecka, G. A., M. Wadhwa, P. E. Janney, & Ariel D. Anbar. (2010). Towards Reconciling Early Solar System Chronometers: The 238U/235U Ratios of Chondrites and D'Orbigny Pyroxenes. LPI. 2117.8 indexed citations
9.
Wadhwa, M., P. E. Janney, & Alexander N. Krot. (2009). Al-Mg Isotope Systematics in the Efremovka E60 CAI: Evidence of Re-Equilibration. M&PSA. 72. 5431.1 indexed citations
10.
Brennecka, G. A., Stefan Weyer, M. Wadhwa, P. E. Janney, & Ariel D. Anbar. (2009). 238U/235U Variations in CAIs: Implications for Pb-Pb Dating. LPI. 1061.2 indexed citations
11.
Amelin, Y., P. E. Janney, R. Chakrabarti, M. Wadhwa, & S. B. Jacobsen. (2008). Isotopic analysis of small Pb samples using MC-ICPMS: The limits of precision and comparison to TIMS. AGU Fall Meeting Abstracts. 2008.4 indexed citations
12.
MacPherson, G. J., E. S. Bullock, P. E. Janney, et al.. (2007). High Precision Al-Mg Isotope Studies of Condensate CAIs. LPI. 1378.1 indexed citations
13.
Cook, David L., M. Wadhwa, R. N. Clayton, et al.. (2005). Nickel Isotopic Composition of Fe-Ni Metal from Iron Meteorites and the Brenham Pallasite. 36th Annual Lunar and Planetary Science Conference. 1779.3 indexed citations
14.
Dauphas, Nicolas, A. M. Davis, R. A. Mendybaev, et al.. (2004). Iron Isotopic Fractionation During Vacuum Evaporation of Molten Wüstite and Solar Compositions. LPI. 1585.1 indexed citations
15.
Wadhwa, M., C. N. Foley, P. E. Janney, & L. J. Spivak-Birndorf. (2004). Mg Isotopic Systematics in Eucrites: Implications for the 26Al-26Mg Chronometer. LPI. 1843.3 indexed citations
16.
Foley, C. N., M. Wadhwa, & P. E. Janney. (2003). Tungsten Isotopic Compositions of the SNC Meteorites: Further Implications for Early Differentiation History of Mars. 3163.1 indexed citations
17.
Dauphas, Nicolas, Olivier Rouxel, A. M. Davis, et al.. (2003). Iron and Selenium Isotope Homogeneity in the Protosolar Nebula. LPI. 1807.1 indexed citations
18.
Wadhwa, M., et al.. (2003). Magnesium Isotopic Composition of the Juvinas Eucrite: Implications for Concordance of the Al-Mg and Mn-Cr Chronometers and Timing of Basaltic Volcanism on Asteroids. Lunar and Planetary Science Conference. 2055.3 indexed citations
19.
Wadhwa, M., C. N. Foley, & P. E. Janney. (2003). High precision Mg isotopic analyses of achondrites: Is the 26 Al- 26 Mg chronometer concordant with other high resolution chronometers?. GeCAS. 67(18). 517.1 indexed citations
20.
Janney, P. E., Richard W. Carlson, Steven B. Shirey, David Bell, & Anton P. le Roex. (1999). Temperature, Pressure, and Rhenium-Osmium Age Systematics of Off-Craton Peridotite Xenoliths from the Namaqua-Natal Belt, Western South Africa. 7268.6 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.