This map shows the geographic impact of T. D. Bullen'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 T. D. Bullen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites T. D. Bullen more than expected).
This network shows the impact of papers produced by T. D. Bullen. 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 T. D. Bullen. The network helps show where T. D. Bullen may publish in the future.
Co-authorship network of co-authors of T. D. Bullen
This figure shows the co-authorship network connecting the top 25 collaborators of T. D. Bullen.
A scholar is included among the top collaborators of T. D. Bullen 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 T. D. Bullen. T. D. Bullen is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Farkaš, Juraj, Vladislav Chrastný, Martin Novák, et al.. (2011). Chromium isotope variations (δ53Cr) in globally distributed chromite- and chromate-bearing minerals and rocks. AGUFM. 2011.
3.
Zimmer, Margaret, Scott W. Bailey, K. J. McGuire, & T. D. Bullen. (2010). Determining surface water sources using spatial and temporal variation in stream chemistry in a headwater catchment. AGU Fall Meeting Abstracts. 2010.
4.
Ellis, A. S., et al.. (2010). Stable Isotope Fractionation during Chromium(III) Oxidation by δ-MnO2. AGUFM. 2010.4 indexed citations
5.
Bullen, T. D., et al.. (2010). Understanding Metal Sources and Transport Processes in Watersheds: a Hydropedologic Approach (Invited). AGU Fall Meeting Abstracts. 2010.
6.
White, A. F., M. S. Schulz, T. D. Bullen, et al.. (2010). Use of elemental and isotopic ratios to distinguish between lithogenic and biogenic sources of soil mineral nutrients.. 214–217.2 indexed citations
Bullen, T. D., David Wîdory, & Emmanuelle Pételet-Giraud. (2009). Multi-isotope approaches for identification of metal contamination sources in environmental systems. GeCAS. 73.1 indexed citations
9.
Millot, Romain, et al.. (2009). Multi-isotopic (H, O, C, S, Li, B, Si, Sr, Nd) approach for geothermal fluid characterization in Iceland. GeCAS. 73.5 indexed citations
10.
Ellis, A. S., et al.. (2008). Environmental Cycling of Cr Using Stable Isotopes: Kinetic and Equilibrium Effects. AGU Fall Meeting Abstracts. 2008.8 indexed citations
Griffith, Elizabeth M., Adina Paytan, & T. D. Bullen. (2006). A High Resolution Record of Strontium and Calcium Isotopes Over the Paleocene Eocene Boundary From Marine Barite. AGU Fall Meeting Abstracts. 2006.1 indexed citations
13.
Baesman, S. M., T. D. Bullen, J. F. Dewald, et al.. (2006). Formation of Unique Tellurium Nanocrystals with Anaerobic Growth of Bacillus selenitireducens and Sulfurospirillum barnesii using Te-oxyanions as Electron Acceptors.. AGUFM. 2006.1 indexed citations
14.
Paytan, Adina, et al.. (2005). Seawater calcium isotopes from marine barite: A potential record of carbonate deposition in the oceans. Geochimica et Cosmochimica Acta Supplement. 69(10).1 indexed citations
15.
Paytan, Adina, et al.. (2005). Seawater Calcium Isotopes Variations Over the Past 24 Million Years From Marine Barite. AGU Fall Meeting Abstracts. 2005.3 indexed citations
16.
Johnson, Thomas M., et al.. (2004). Chromium Stable Isotope Fractionation During Abiotic Reduction of Hexavalent Chromium. AGUFM. 2004.4 indexed citations
17.
Icopini, Gary A., S. L. Brantley, Shane Ruebush, Ming Tien, & T. D. Bullen. (2002). Iron Fractionation During Microbial Reduction of Iron. AGU Fall Meeting Abstracts. 2002.1 indexed citations
18.
Conrey, Richard M., et al.. (2001). The Shevlin Park Tuff, Central Oregon Cascade Range: Magmatic Processes Recorded in an Arc-Related Ash-Flow Tuff. AGU Fall Meeting Abstracts. 2001.5 indexed citations
19.
Ellis, A. S., Thomas M. Johnson, & T. D. Bullen. (2001). Chromium Stable Isotope Fractionation - An Indicator of Hexavalent Chromium Reduction.. AGUFM. 2001.
20.
White, A. F., T. D. Bullen, Davison V. Vivit, et al.. (1999). The effect of climate on chemical weathering of silicate rocks.. 79–82.5 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.