V. Johan

1.2k total citations
20 papers, 993 citations indexed

About

V. Johan is a scholar working on Geophysics, Artificial Intelligence and Geochemistry and Petrology. According to data from OpenAlex, V. Johan has authored 20 papers receiving a total of 993 indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Geophysics, 6 papers in Artificial Intelligence and 3 papers in Geochemistry and Petrology. Recurrent topics in V. Johan's work include Geological and Geochemical Analysis (17 papers), earthquake and tectonic studies (9 papers) and Geochemistry and Geologic Mapping (6 papers). V. Johan is often cited by papers focused on Geological and Geochemical Analysis (17 papers), earthquake and tectonic studies (9 papers) and Geochemistry and Geologic Mapping (6 papers). V. Johan collaborates with scholars based in France, Romania and Germany. V. Johan's co-authors include Patrick Ledru, Zdeněk Johan, Jean Milési, M. Tegyey, Jean-Louis Feybesse, Catherine Guerrot, C. Triboulet, Vincent Bouchot, J. Pons and Ladislav Strnad and has published in prestigious journals such as Geochimica et Cosmochimica Acta, Precambrian Research and Ore Geology Reviews.

In The Last Decade

V. Johan

19 papers receiving 948 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
V. Johan France 14 898 525 196 73 68 20 993
S. Maske South Africa 8 551 0.6× 389 0.7× 219 1.1× 122 1.7× 86 1.3× 15 800
Nilson Francisquini Botelho Brazil 17 908 1.0× 623 1.2× 355 1.8× 94 1.3× 53 0.8× 100 1.0k
Sílvio Roberto Farias Vlach Brazil 19 935 1.0× 580 1.1× 170 0.9× 92 1.3× 51 0.8× 77 1.0k
Michel Delaloye Switzerland 22 1.7k 1.9× 546 1.0× 116 0.6× 101 1.4× 47 0.7× 45 1.9k
Carlos Villaseca Spain 32 2.2k 2.5× 698 1.3× 320 1.6× 109 1.5× 41 0.6× 70 2.3k
J. L. Paquette France 19 1.3k 1.4× 499 1.0× 201 1.0× 90 1.2× 45 0.7× 36 1.4k
D M Hoatson Australia 15 665 0.7× 408 0.8× 172 0.9× 44 0.6× 16 0.2× 22 872
Ane K. Engvik Norway 17 1.0k 1.1× 372 0.7× 133 0.7× 84 1.2× 34 0.5× 41 1.1k
L. Morbidelli Italy 17 840 0.9× 497 0.9× 162 0.8× 169 2.3× 69 1.0× 28 936
B. P. J. Stevens Australia 15 972 1.1× 527 1.0× 248 1.3× 119 1.6× 59 0.9× 30 1.1k

Countries citing papers authored by V. Johan

Since Specialization
Citations

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

Fields of papers citing papers by V. Johan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of V. Johan

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

All Works

20 of 20 papers shown
1.
Johan, V., et al.. (2025). Diversity among fossil micrometeorites in the late Devonian. Geochimica et Cosmochimica Acta. 405. 114–131.
2.
Johan, Zdeněk, Ladislav Strnad, & V. Johan. (2012). Evolution of the Cinovec (zinnwald) Granite Cupola, Czech Republic: Composition of Feldspars and Micas, a Clue to the Origin of W, sn Mineralization. The Canadian Mineralogist. 50(4). 1131–1148. 50 indexed citations
3.
Johan, Zdeněk & V. Johan. (2004). Accessory minerals of the C�novec (Zinnwald) granite cupola, Czech Republic: indicators of petrogenetic evolution. Mineralogy and Petrology. 83(1-2). 113–150. 67 indexed citations
4.
Konopásek, Jiřı́ & V. Johan. (2002). Eclogite-facies metamorphism at the eastern margin of the Bohemian Massif subduction prior to continental underthrusting?. European Journal of Mineralogy. 14(4). 701–713. 24 indexed citations
5.
Milési, Jean, Patrick Ledru, Éric Marcoux, et al.. (2002). The Jacobina Paleoproterozoic gold-bearing conglomerates, Bahia, Brazil: a “hydrothermal shear-reservoir” model. Ore Geology Reviews. 19(1-2). 95–136. 34 indexed citations
6.
Goff, Élisabeth Le, et al.. (2001). Découverte d'éclogites hercyniennes dans la chaıne septentrionale des Mauritanides (Afrique de l'Ouest). Comptes Rendus de l Académie des Sciences - Series IIA - Earth and Planetary Science. 333(11). 711–718. 18 indexed citations
7.
Johan, Zdeněk & V. Johan. (2001). Les micas de la coupole granitique de Cınovec (Zinnwald), République tchèque : un nouvel aperçu sur la métallogenèse de l'étain et du tungstène. Comptes Rendus de l Académie des Sciences - Series IIA - Earth and Planetary Science. 332(5). 307–313. 3 indexed citations
8.
Feybesse, Jean-Louis, et al.. (1998). The West Central African belt: a model of 2.5–2.0Ga accretion and two-phase orogenic evolution. Precambrian Research. 87(3-4). 161–216. 184 indexed citations
9.
Johan, V., et al.. (1998). High-grade metamorphic rocks in the pre-Alpine nappe stack of the Getic-Supragetic basement (Median Dacides, South Carpathians, Romania). Mineralogy and Petrology. 63(3-4). 173–198. 27 indexed citations
10.
Johan, V., et al.. (1997). Kyanite-bearing eclogite from the Leaota Mountains (South Carpathians, Romania): mineral associations and metamorphic evolution. Comptes Rendus de l Académie des Sciences - Series IIA - Earth and Planetary Science. 325(11). 831–838. 11 indexed citations
11.
Ledru, Patrick, et al.. (1997). Foreland basins and gold-bearing conglomerates: a new model for the Jacobina Basin (Sa˜o Francisco province, Brazil). Precambrian Research. 86(3-4). 155–176. 33 indexed citations
12.
Ledru, Patrick, Alain Cocherie, Johildo Salomão Figueirêdo Barbosa, V. Johan, & T. C. Onstott. (1994). Ages du metamorphisme granulitique dans le craton du Sao Francisco (Bresil). Implications sur la nature de l'orogene transamazonien. Comptes Rendus de l Académie des Sciences - Series IIA - Earth and Planetary Science. 318(2). 251–257. 32 indexed citations
13.
Johan, V. & Zdeněk Johan. (1994). Accessory minerals of the C�novec (Zinnwald) granite cupola, Czech Republic Part 1: Nb-, Ta- and Ti-bearing oxides. Mineralogy and Petrology. 51(2-4). 323–343. 65 indexed citations
14.
Ledru, Patrick, V. Johan, Jean Milési, & M. Tegyey. (1994). Markers of the last stages of the Palaeoproterozoic collision: evidence for a 2 Ga continent involving circum-South Atlantic provinces. Precambrian Research. 69(1-4). 169–191. 210 indexed citations
15.
Johan, V., et al.. (1992). Evolutions tectono-metamorphiques des nappes de l'Artense (Massif Central francais); nouveaux marqueurs de la collision dans la chaine varisque. 163(3). 293–308. 6 indexed citations
16.
Ledru, Patrick, et al.. (1991). The metallogenic relationship between Birimian and Tarkwaian gold deposits in Ghana. Mineralium Deposita. 26(3). 77 indexed citations
17.
Johan, Zdeněk, et al.. (1991). Tungsten-bearing baotite from Pierrefitte, Pyrenees, France. Mineralogy and Petrology. 45(1). 19–27. 5 indexed citations
18.
Ledru, Patrick, J. Pons, Jean Milési, Jean-Louis Feybesse, & V. Johan. (1991). Transcurrent tectonics and polycyclic evolution in the lower proterozoic of Senegal-Mali. Precambrian Research. 50(3-4). 337–354. 97 indexed citations
19.
Ledru, Patrick, et al.. (1989). Structural and metamorphic evolution of the Gabon Orogenic Belt: Collision tectonics in the lower proterozoic?. Precambrian Research. 44(3-4). 227–241. 48 indexed citations
20.
Johan, V., et al.. (1988). Geologic evaluation of the Archean and lower Proterozoic mining inventory of Mitzic, Booue and Mouilla sheets, scale 1:200 000, central Gabon. 491. 67–104. 2 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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