PUBLICATIONS

Johan C. Varekamp
George I. Seney Professor of Geology

Department of Earth & Environmental Sciences, Wesleyan University,

265 Church Street, Middletown CT 06459-0139, USA

e-mail: jvarekamp@ wesleyan.edu Tel: 860 685 2248 Fax: (860) 685 3651

http://www.wesleyan.edu/ees/varekamp.html

I. MERCURY GEOCHEMISTRY

HG-1. Varekamp, J.C. and Buseck, P.R., 1981: Mercury emissions from Mt. St. Helens during September 1980. Nature, 293, 555-556.

HG-2. Varekamp, J.C. and Buseck, P.R., 1983: Hg anomalies in soils: a geochemical exploration method for geothermal areas. Geothermics, 12, 29-47.

HG-3. Varekamp, J.C. and Buseck, P.R., 1984: The speciation of mercury in hydrothermal systems, with applications for ore deposition. Geochim. Cosm. Acta, 48, 177-186.

HG-4. Varekamp, J.C. and Buseck, P.R., 1984: Changing mercury anomalies in Long Valley, California: Indication for magma movement or seismic activity. Geology, 12, 283-286.

HG-5. Varekamp, J.C. and Buseck, P.R., 1986: Global mercury flux from volcanic and geothermal sources. Applied Geochemistry, 1, 65-73.

HG-6. Varekamp, J.C., and Waibel, A., 1987: Natural cause for mercury pollution at Clear Lake, California, and paleotectonic inferences, Geology 15, 1018-1021.

HG-7. Varekamp, J.C., Buchholtz ten Brink, M.R., Mecray, E.L., and Kreulen*, B., 2000: Mercury in Long Island Sound sediments. J. Coastal Research. Spec. issue, vol. 16, 613-626.

HG-8. Varekamp, J.C., Kreulen*, B., Buchholtz ten Brink, M.F, and Mecray, E., 2003, Mercury contamination chronologies from Connecticut wetlands and Long Island Sound sediments. Environmental Geology, 43, 268-282.

HG-9. Varekamp, J.C., Zierzow, T.., Buchholtz ten Brink, M.F, and Mecray, E.,  Once spilled, still found: Metal contamination in Connecticut wetlands and Long Island Sound sediment from historic industries.  Submitted, chapter in monograph on 'Our Changing Coasts'.

II. VOLCANIC VOLATILES, CRATER LAKES AND GEOTHERMAL SYSTEMS VG-1. Thomas, E., Varekamp, J.C. and Buseck, P.R., 1982: Zinc enrichment in the phreatic ashes from Mt. St. Helens. J. Volc. Geoth. Res., 12, 339-350.

VG-2. Varekamp, J.C., Luhr, J.F. and Prestegaard, K.L., 1984: The 1982 eruptions of El Chichon volcano (Chiapas, Mexico): Character of the eruptions, ash-fall deposits, and gasphase. J. Volc. Geoth. Res., 23, 39-68.

VG-3. Varekamp, J.C., Thomas, E., Germani, M. and Buseck, P.R., 1986: Particle chemistry of the volcanic plumes of Mt. Etna and Mt. St. Helens. J. Geophys. Res., 91, B12, 12,233-12,248.

VG-4. Poorter, R.P.E., Varekamp, J.C. et al., 1989: The Sirung volcanic boiling spring: An extreme chloride-rich, acid brine on Pantar (Lesser Sunda Islands, Indonesia). Chemical Geology, 76, 215-228.

VG-5. Poorter, R.P.E., Varekamp, J.C., et al., 1989: Geochemistry of hot springs and fumarolic gases from the Banda Arc and Eastern Sunda Arc. Neth. J. of Sea Res., 24, 323-331.

VG-6. Poorter, R.P.E., Varekamp, J.C., et al., 1991: Geochemistry and isotopic composition of volcanic gases from the Banda and Eastern Sunda arcs, Indonesia, Geochim. Cosmochim. Acta 55, 3795-3807.

VG-7 Varekamp J.C., Kreulen R., Poorter R.P.E. and VanBergen M.J. , 1992: Carbon sources of arc volcanism with applications for the carbon cycle. Terra Nova 4, Spec. Issue Global Change (ed. Wezel), 363-373.

VG-8. Pasternack*, G. P. and Varekamp, J.C., 1994: The geochemistry of the Keli Mutu crater lakes, Flores, Indonesia. Geochemical Journal 28, 243-262.

VG-9. Pasternack*, G.B. and Varekamp J.C., 1997: Volcanic lake systematics.I. Physical constraints. Bull. Volc. 58, 528-538.

VG-10. Varekamp, J.C., and Kreulen, R., 2000: The stable isotope geochemistry of volcanic lakes: examples from Indonesia. J.Volc. Geothermal Res. 97, 309-327.

VG-11. Sriwana, T., VanBergen, M.J., and Varekamp, J.C., 2000: The geochemistry of Kawah Putih, an acid crater lake in Java, Indonesia, J.Volc. Geothermal Res. 97, 77-104.

VG-12.Varekamp, J.C., Pasternack*, G.B. and Rowe, G.L., 2000: Volcanic lake systematics II. Chemical constraints. J.Volc. Geothermal Res. 97, 161-180.

VG-13. Varekamp, J.C., Ouimette*, A., Herman*, S., and Bermudez, A. and Delpino, D., 2001: Hydrothermal Element Fluxes during the 2000 Eruptions of Copahue, Argentina:  A 'Beehive' Volcano in Turmoil.  Geology 29, 1059-1062 (with cover photo)

VG-14. Fehn, U., Snijder, G. and Varekamp, J.C., 2002: Evidence for marine sediment recycling in subduction zones from 129I in crater lakes. J. Volcanology Geothermal Research, 115, 451-460.

VG-15.    Varekamp, J.C., Ouimette, A. and Kreulen. R., 2004, The magmato-hydrothermal system of Copahue volcano, Argentina. WRI-11. p. 369-373

VG-16. Varekamp, J.C., 2003: Lake contamination models: evolution towards steady state in stratified lakes. J. of Limnology, 62 (suppl.1), 67-72.

VG-17. Ouimette*, A., Varekamp, J.C. and Kreulen, R., 2004: The hydrothermal system of Copahue volcano, Argentina. EPSL (ms).

VG-18. Varekamp,  J.C., Flynn,  K.,  Ouimette,  A.P.,  Herman,  S.  Delpino, D.,  and Bermudez, A., 2004, Compositional changes in hydrothermal fluids from Copahue volcano, Argentina, during the 2000 eruptions. Pageophs (submitted).


III. PETROLOGY OF VOLCANIC ROCKS VP-1. Barton, M., Varekamp, J.C. and van Bergen, M.J., 1982: Complex zoning of clinopyroxenes in the lavas of Vulsini, Latium, Italy: Evidence for magma mixing. J. Volc. Geoth. Res., 14, 361-388.

VP-2. Varekamp, J.C., 1983: The significance of mafic nodules in the ultra-potassic rocks from Italy, a discussion. J. Volc. Geoth. Res., 16, 161-165.

VP-3. Luhr, J.F., Carmichael, I.S.E. and Varekamp, J.C., 1984: The 1982 eruptions of El Chichon volcano, Chiapas, Mexico: Mineralogy and petrology of the anhydrite-bearing pumices. J. Volc. Geoth. Res., 23, 69-108.

VP-4. Varekamp, J.C., and Kalamarides, R., 1989: Hybridization processes in leucite tephrites from Vulsini (Italy), and the evolution of the Italian potassic suite. J. Geophys. Res., 94, B4, 4603-4618.

VP-5. Varekamp, J.C., et al., 1989: Volcanism and tectonics in the eastern Sunda Arc, Indonesia, Neth. J. of Sea Res., 24, 303-312.

VP-6. van Bergen, M.J., Varekamp, J.C., et al., 1989: Spatial variations in geochemical signatures of arc volcanism in East Indonesia. Neth. J. of Sea Res., 24, 313-322.

VP-7. VanBergen, M.J., Vroon, P.Z., Varekamp, J.C., and Poorter R.P.E., 1992: The origin of the potassic rock suite of Batu Tara (East Sunda Arc, Indonesia). Lithos 28, 261-282.

VP-8. Vroon, P.Z., Van Bergen, M.J., White W.M., and Varekamp, J.C., 1994: Sr-Nd-Pb isotope systematics of the Banda arc, Indonesia: Combined subduction and assimilation of continental material. J. Geophys. Res. 98, 22,349-22,366.

VP-9. Francalanci, L., Varekamp, J.C., Vougioukalakis, G., Defant, M.J., Innocenti, F., and Manetti, P., 1995: Crystal retention, fractionation, and crustal assimilation in a convecting magma chamber, Nisyros volcano, Greece, Bull. of Volcanol. 56, 601-620.

VP-10. Hoogewerff, J.A., VanBergen, M.J., Vroon, P.Z., Hertogen, J., Wordel, R., Sneyers, A., Nasution, A., Varekamp, J.C., Moens, H.L.E., and Mouchel, D., 1997: U-series, Sr-Nd-Pb isotope and trace-element systematics across an active island arc-continent collision zone: Implications for element transfer at the slab-wedge interface. Geochimica Cosmochimica Acta, 61, p.1057-1072.

VP-11. Varekamp, J.C., Maarten deMoor, J., Merrill, M.D., Colvin A.S., , Goss A.R., Vroon P.Z.,  and Hilton D. R., 2004, The Geochemistry and Isotope Characteristics of the Caviahue Copahue Volcanic Complex, Province of Neuquen, Argentina.  In: Kay and Ramos, eds., GSA Special Paper on Neuquen Basin, Argentina.

IV. VOLCANOLOGY V-1. Varekamp, J.C., 1979: The geology and petrology of the Vulsinian volcanic area, Latium, Italy. Geologica Ultraectina, 22, p. 384.

V-2. Varekamp, J.C., 1980: The Geology of the Vulsinian volcanic area, Latium, Italy. Bull. Volc., 43, 487-503.

V-3. Varekamp, J.C., 1980: Relations between tectonics and volcanism in the Roman province, Italy. In: Tephra studies. Eds. Self, S. and Sparks, R.S.J., NATO Advanced Study Institute Series, Series C, 219-225.

V-4. Limburg*, E. and Varekamp, J.C., 1991: Young Pumice deposits on Nisyros, Greece. Bull. of Volc. 54, 68-77.

V-5. Varekamp, J.C., 1992: Some remarks on volcanic vent evolution during plinian eruptions. J. Volc. Geotherm. Res. 54, 309-318.

V. ENVIRONMENTAL STUDIES ES-1. Varekamp, J.C., 1988: Lake pollution modelling. J. Geol. Educ., 36, 4-9.

ES-2. Thomas, E. and Varekamp, J.C., 1991: Paleo-Environmental analyses of marsh sequences (Clinton, CT): Evidence for punctuated sealevel rise during the latest Holocene. Journal of Coastal Research, special issue, v.11, 125-158.

ES-3. Varekamp, J.C., 1991: Trace element geochemistry and pollution history of mudflat and marsh sediments from the Connecticut coastline. Journal of Coastal Research, spec. issue, v.11, 105-123.

ES-4. Varekamp, J.C., Thomas, E. and van de Plassche, O., 1992: Relative sea level rise and climate change over the last 1500 years. Terra Nova 4, Spec. Issue Global Change (ed. Wezel), 293-304.

ES-5. Nydick*, K.R., Bidwell*, A., Thomas, E. and Varekamp, J.C., 1995: A sealevel rise curve from Guilford, CT, Marine Geology 124, 137-159.

ES-6. Varekamp, J.C. and Thomas, E., 1998: Climate change and the rise and fall of sea level over the millenium. EOS 79, p. 69-75.

ES-7. Varekamp, J.C. and Thomas, E. , 1998: Volcanic and anthropogenic contributions to global weathering budgets. J. Geochem. Exploration, 62, 149-159.

ES-8.Varekamp, J.C., Thomas, E., and Thompson*, W.G., 1999: Sea level - climate correlation during the past 1400 yr: A comment. Geology, 27, 189-190.

ES-9. Thomas, E., Gapotchenko*, T., Varekamp, J.C., Buchholtz ten Brink, M.F., and Mecray, E., 2000: Foraminifera in Long Island Sound surface sediments in 1999: evidence for recent environmental change, J. Coastal Research. Spec. issue, vol. 16, 641-655.

ES-10. Horton, B.P., Edwards, R.J., Thomas, E. and Varekamp, J.C., 2002: Reconstructing late Holocene Sea-level changes using foraminifera-based transfer functions, North Norfolk, England. J. Quaternary Research (in press).

ES-11. Heller, N., Kruge, M., Meigs*, K., and Varekamp, J.C., 2000: Organic and metallic contaminants in the Housatonic River estuary, CT. Environmental Science and Technology (ms)

ES-12. Thompson, W., Varekamp, J.C. and Thomas, E. Sea level and land movements at Branford marsh, CT. Marine geology (ms).

ES-13.  Varekamp, J.C. and Thomas, E., Paleoenvironmental records from salt marshes in Connecticut: sea level rise and human impacts. EPSL (ms).

ES-14. The eutrophicatopn of Long Island Sound: Chemical indicators. Varekamp, J.C., Thomas, E., Buchholtz ten Brink, M.L., Mecray, M.  Limnology and Oceanography, Special "Eutrophication" Issue (ms)

ES-15. The eutrophicatopn of Long Island Sound: Faunal and floral indicators.  Thomas, E., Cooper, S., Varekamp, J.C., Buchholtz ten Brink, M.L., and Mecray, M.  Limnology and Oceanography, Special "Eutrophication" Issue (ms)

VII. OTHER TOPICS O-1. Wensink, H., Zijderveld, J.D.A. and Varekamp, J.C., 1978: Paleomagnetism and ore mineralogy of some basalts of the Geirud formation of Late Devonian-Early Carboniferous age from Southern Alborz, Iran. Earth Plan. Sc. Lett., 41, 441-450.

O-2. Wensink, H. and Varekamp, J.C., 1980: Paleomagnetism of basalts from Alborz. Iran part of Asia in the Cretaceous. Tectonophysics, 68, 113-129.

O-3. Varekamp, J.C. and Thomas, E., 1982: Chalcophile elements in Cretaceous / Tertiary boundary sediments: Terrestrial or extraterrestrial?. Geol. Soc. Amer. Spec. Paper 190, 461-467.

VIII. TEXTBOOK CHAPTERS TC-1.Varekamp, J.C., 1990: Volcanic Gases, Chapter in textbook: "Earth Sciences", Open University, The Netherlands, Heerlen, v. 2, Plate tectonic processes, p. 150-175.

TC-2.Varekamp, J.C., 1990: Geology of the ocean floor, Chapter in textbook: "Earth Sciences", Open University, The Netherlands, Heerlen, v. 2, Plate tectonic processes, p. 6-32.

TC-3.Varekamp, J.C., 1992: Sea level fluctuations, Chapter in textbook: Geology around the Ice ages, Open University, The Netherlands, Heerlen, v. 1, p. 213-232.

TC-4.Varekamp, J.C., 1992: The carbon cycle, Chapter in textbook: Geology around the Ice ages, Open University, The Netherlands, Heerlen, v.1, p.235-269.

TC-5. Short articles in basis volume (v.4) for "Earth Sciences" (1990)
Magnetism of the ocean crust, p.43-46
Biological activity at submarine vents, p.47-50
Water in silicate melts, p.74-76
The atmosphere, p.77-82
Helium isotopes, p.83

TC-6. Short articles in basis volume (v.3) for "Geology around the Ice ages" (1992)
Sedimentology of estuaria and delta's, p.34-39
14C, U/Th and 10Be dating methods, p.40-44
Economic damage as a result of rising sea levels, p.45-49
Volcanic CO2, p.50-53.

TC-7. Volcanoes, 2000: Encyclopedia of World Geography, Salem Press, San Francisco, CA, p.65-69.

TC-8. Pollution from A-Z  (Wiley Publishers), 2003, Sections on Heavy metals, Mercury Pollution, Ishida Mikura.