R. Vollmer

1.5k total citations
17 papers, 1.3k citations indexed

About

R. Vollmer is a scholar working on Geophysics, Artificial Intelligence and Geochemistry and Petrology. According to data from OpenAlex, R. Vollmer has authored 17 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Geophysics, 7 papers in Artificial Intelligence and 5 papers in Geochemistry and Petrology. Recurrent topics in R. Vollmer's work include Geological and Geochemical Analysis (17 papers), earthquake and tectonic studies (10 papers) and Geochemistry and Geologic Mapping (7 papers). R. Vollmer is often cited by papers focused on Geological and Geochemical Analysis (17 papers), earthquake and tectonic studies (10 papers) and Geochemistry and Geologic Mapping (7 papers). R. Vollmer collaborates with scholars based in United Kingdom, United States and Switzerland. R. Vollmer's co-authors include Chris J. Hawkesworth, Michael J Norry, C. J. Hawkesworth, J C Roddick, J.‐G. Schilling, D Guy Waggoner, R. H. Kingsley, Maria Rosaria Ghiara, L. Lirer and Rοsalba Munno and has published in prestigious journals such as Nature, Geochimica et Cosmochimica Acta and Earth and Planetary Science Letters.

In The Last Decade

R. Vollmer

17 papers receiving 1.1k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
R. Vollmer United Kingdom	13	1.2k	421	207	191	63	17	1.3k
G. L. Hendry United Kingdom	14	1.3k 1.1×	726 1.7×	119 0.6×	191 1.0×	114 1.8×	19	1.5k
J. Bernard-Griffiths France	25	1.8k 1.6×	628 1.5×	136 0.7×	272 1.4×	90 1.4×	31	1.9k
N.A.I.M. Boelrijk Netherlands	20	999 0.8×	317 0.8×	136 0.7×	87 0.5×	88 1.4×	29	1.1k
E. A. Th. Verdurmen Netherlands	20	931 0.8×	355 0.8×	142 0.7×	99 0.5×	133 2.1×	27	1.0k
E. J. D. Kable South Africa	10	701 0.6×	319 0.8×	69 0.3×	171 0.9×	56 0.9×	13	747
J. Cornichet France	16	1.7k 1.4×	478 1.1×	125 0.6×	348 1.8×	72 1.1×	18	1.7k
G. Dobosi Hungary	22	1.3k 1.1×	220 0.5×	100 0.5×	162 0.8×	168 2.7×	41	1.4k
Don F. Parker United States	14	593 0.5×	281 0.7×	196 0.9×	112 0.6×	86 1.4×	27	709
Julie K. Vry New Zealand	15	783 0.7×	299 0.7×	106 0.5×	91 0.5×	68 1.1×	29	880
Jaromír Ulrych Czechia	18	859 0.7×	212 0.5×	90 0.4×	169 0.9×	76 1.2×	59	950

Countries citing papers authored by R. Vollmer

Since Specialization

Citations

This map shows the geographic impact of R. Vollmer'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 R. Vollmer with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites R. Vollmer more than expected).

Fields of papers citing papers by R. Vollmer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by R. Vollmer. 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 R. Vollmer. The network helps show where R. Vollmer may publish in the future.

Co-authorship network of co-authors of R. Vollmer

This figure shows the co-authorship network connecting the top 25 collaborators of R. Vollmer. A scholar is included among the top collaborators of R. Vollmer 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 R. Vollmer. R. Vollmer is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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17 of 17 papers shown

Vollmer, R.. (1991). On the origin of the Italian potassic magmas: a one-dimensional diffusion-controlled model of source metasomatism. Earth and Planetary Science Letters. 107(3-4). 487–498. 3 indexed citations

Vollmer, R.. (1990). On the origin of the Italian potassic magmas — Reply. Chemical Geology. 85(1-2). 191–196. 8 indexed citations

Vollmer, R.. (1989). On the orgin of the Italian potassic magmas. Chemical Geology. 74(3-4). 229–239. 41 indexed citations

Ludwig, K. R., et al.. (1989). Isotopic constraints on the genesis of base-metal ores in southern and central Sardinia. European Journal of Mineralogy. 1(5). 657–666. 47 indexed citations

Vollmer, R.. (1985). Inferences of lithospheric evolution in Italy from Pb isotopic compositions in northern Apennine cherts. Canadian Journal of Earth Sciences. 22(9). 1370–1373. 3 indexed citations

Vollmer, R., P. H. Nixon, & E. Condliffe. (1985). Petrology and geochemistry of a U and Th enriched nephelinite from Mt. Nyiragongo, Zaire: Its bearing on ancient mantle metasomatism. Bulletin of the Geological Society of Finland. 57(1-2). 37–46. 8 indexed citations

Vollmer, R., et al.. (1984). Nd and Sr isotopes in ultrapotassic volcanic rocks from the Leucite Hills, Wyoming. Contributions to Mineralogy and Petrology. 87(4). 359–368. 118 indexed citations

Vollmer, R. & Michael J Norry. (1983). Unusual isotopic variations in Nyiragongo nephelinites. Nature. 301(5896). 141–143. 52 indexed citations

Vollmer, R. & Michael J Norry. (1983). Possible origin of K-rich volcanic rocks from Virunga, East Africa, by metasomatism of continental crustal material: Pb, Nd and Sr isotopic evidence. Earth and Planetary Science Letters. 64(3). 374–386. 81 indexed citations

10.

Vollmer, R.. (1983). Earth degassing, mantle metasomatism, and isotopic evolution of the mantle. Geology. 11(8). 452–452. 24 indexed citations

11.

Vollmer, R., et al.. (1981). Sr isotope geochemistry of megacrysts from continental rift and converging plate margin alkaline volcanism in South Italy. Journal of Volcanology and Geothermal Research. 11(2-4). 317–327. 49 indexed citations

12.

Vollmer, R. & C. J. Hawkesworth. (1980). Lead isotopic composition of the potassic rocks from Roccamonfina (South Italy). Earth and Planetary Science Letters. 47(1). 91–101. 77 indexed citations

13.

Hawkesworth, Chris J., Michael J Norry, J C Roddick, & R. Vollmer. (1979). 143Nd/144Nd and 87Sr/86Sr ratios from the Azores and their significance in LIL-element enriched mantle. Nature. 280(5717). 28–31. 148 indexed citations

14.

Hawkesworth, Chris J. & R. Vollmer. (1979). Crustal contamination versus enriched mantle: 143Nd/144Nd and 87Sr/86Sr evidence from the Italian volcanics. Contributions to Mineralogy and Petrology. 69(2). 151–165. 298 indexed citations

15.

Vollmer, R.. (1977). Terrestrial lead isotopic evolution and formation time of the Earth's core. Nature. 270(5633). 144–147. 63 indexed citations

16.

Vollmer, R.. (1976). Rb-Sr and U-Th-Pb systematics of alkaline rocks: the alkaline rocks from Italy. Geochimica et Cosmochimica Acta. 40(3). 283–295. 227 indexed citations

17.

Vollmer, R.. (1975). Origin of alkaline rocks. Nature. 257(5522). 116–117. 23 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.

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