ANDREW HAJASH, JR.
Professor and Department Head
(Hajash Home)
1. Gunn, B.M., Nougier, J., Abranson, C.E., Watkins, N.D., and Hajash, A., 1971, Amsterdam Island, an isolated volcano in the southern Indian Ocean, Contr. Min. Petr., v. 32, 79-92.
2. Watkins, N.D., Hajash, A., and Abranson, C.E., 1972, Geomagnetic secular variation of the Brunhes Epoch geomagnetic field in the southern Indian Ocean and Atlantic Ocean regions, Geophys J. Roy. Astro. Soc., v. 28, 1-25.
3. Hajash, A. and Armstrong, R.L., 1972, Paleomagnetic and radiometric evidence for the age of the Comores Islands, west-central Indian Ocean, Earth. Planet. Sci Lett., v. 16, 231-236.
4. Scott, R.B. and Hajash, A., 1975, Hydrothermal processes in the Atlantic Ocean Crust, 26 N, Proceedings of the International Union of Geodesy and Geophysics, XVI General Assembly, Grenoble, Publication No. 119, 35-46.
5. Hajash, A., 1975, Hydrothermal processes along mid-ocean ridges: An experimental investigation, Contr. Min. Petr., v. 53, 205-226.
6. Scott, R.B. and Hajash, A., 1976, Initial submarine alteration of basaltic pillow lavas: a microprobe study, Am. J. Sci., v. 276, 480-501.
7. Hajash, A. and Archer, P.L., 1980, Experimental seawater/basalt interactions: the effects of cooling of reacted seawater for high and low water/rock ratio systems, Contr. Min. Petr., v. 75, 1-13.
8. Hajash, A., 1980, Hydrothermal processes along mid-ocean ridges: An experimental investigation: In Benchmark Papers in Geology, v. 56, Seafloor Spreading Centers: Hydrothermal Systems, P.A. Rona and R.P. Lowell (eds.), Academic Press.
9. Hajash, A., 1981, Altered rocks from Leg 59, Deep Sea Drilling Project, Initial Reports of DSDP, v. 59, 735-736.
10. Hajash, A., 1981, Regional diagenetic trends in the Lower Cretaceous Muddy Sandstone, Powder River Basin: Discussion, J. Sed. Pet., v. 51, 679-681.
11. Hajash, A. and Chandler, G.W., 1981, An experimental investigation of high- temperature interactions between seawater and rhyolite, andesite, basalt, and peridotite, Contr. Min. Petr., 78, 240-254.
12. Popp, R.K., Nagy, K.L., and Hajash, A., 1984, Semiquantitative control of hydrogen fugacity in rapid-quench vessels, Am. Min., v. 69, 557-562.
13. Hajash, A., 1984, Rare earth element abundances and distribution patterns in hydrothermally altered basalts: experimental results, Contr. Min. Petr., v. 85, 409- 412.
14. Pope, L. A., Hajash, A., and Popp, R., 1987, An Experimental Investigation of the Quartz, Na-K, Na-K-Ca Geothermometers and the Effects of Fluid Composition, Journal of Volcanology and Geothermal Research, v. 31, 151-161.
15. Hajash, A., 1988, Experimental Water/Rock Interactions: Geochemistry, McGraw Hill Yearbook of Science and Technology, pp. 164-168.
16. Hajash, A. and Bloom, M., 1991, Marine Diagenesis of Feldspathic Sand: A Flow-Through Experimental Study at 200C, 1 kbar, Chemical Geology, v. 89, p. 359- 377.
17. Elias, B.P. and Hajash, A., 1992, Changes in quartz solubility and porosity due to effective stress: An experimental investigation of pressure solution,Geology , v. 20, p. 451-454.
18. Reed, C.L. and Hajash, A., 1992, Dissolution of granitic sand by pH-buffered carboxylic acids: A flow-through experimental study at 100C, 345 bars, Am. Assoc Petrol. Geol.Bulletin . v. 76, p. 1402-1416.
19. Hajash, A., Franklin, S, and Reed, C., 1992, Experimental feldspar dissolution in acetic and oxalic acids at 100C, 345 bars., In Proceedings of the 7th International Water/Rock Symposium, ed. Kharaka, Y., A.A. Balkema, Rotterdam, Netherlands., vol. 1, p. 325-328.
20. Hajash, A., 1994, Comparison and Evaluation of Experimental Studies on Dissolution of Minerals by Organic Acids: In The Role of Organic Acids in Geological Processes, eds. Lewan, M. and Pittman, E., Springer-Verlag. 201-225.
21. Franklin, S.P., Hajash, A., Dewers, T.A., and Tieh, T.T., 1994, The role of carboxylic acids in albite and quartz dissolution: an experimental study under diagenetic conditions,Geochim. et Cosmochim. Acta.,vol. 58, 4259-4279.
22. Dewers, T. A. and Hajash, A. 1994, Rate laws for water-assisted densification and stress-enhanced water-rock interaction in sandstones: Prodeeding of Workshop LXIII on the , USGS Red Book Conference on the Mechanical Involvement of Fluids in Faulting, National Earthquake Hazards Reduction Program; Uniter States Department of Interior, U.S. Geological Survey Open File Report 94-228, pp. 576-611.
23. Dewers, T. A. and Hajash, A. 1995, Rate laws for water-assisted compaction and stress-induced water-rock interaction in sandstones, J. Geophys. Res., Vol. 100, pp. 13,093-13,112.
24. Muhuri, A., Dewers, T. A. and Hajash, A., Comparison of experimental pressure solution creep in water-saturated porous halite, calcite, gypsum, and quartz aggregates, Geology, accepted, revised version sent 11/99.
25. Hajash, A., Carpenter, T. D, and, Dewers, T. A, 1998, Dissolution and time-dependent compaction of albite sand: Experiments at 100° and 160°C in pH-buffered organic acids and distilled water, Tectonophysics, v. 295, 93-115.
26. He, W, Hajash, A., and Sparks, D., 2000, Creep compaction of quartz aggregates: Effects of pore-fluid flow rates A combined experimental and theoretical study. Submitted to J. Geophys. Res, August 2000.
1. Watkins, N.D., Abranson, C.E. and Hajash, A., 1971, Brunhes Epoch secular variation in the southern Indian Ocean, IUGG Fifteenth Assembly (Moscow).
2. Watkins, N.D., Abranson, C.E. and Hajash, A., 1971, A test of the off- centered dipole hypothesis for the Brunhes Epoch using data form oceanic islands, IUGG Fifteenth Assembly (Moscow).
3. Hajash, A., Watkins, N.D., and Abranson, C.E., 1971, Application of Brunhes Epoch paleomagnetic data from the Atlantic and Indian Ocean regions to secular variation and offset dipole models, Trans. Am. Geophys. Union, v. 53, p.357.
4. Scott, R.B., Hajash, A., Kuykendall, W.E., Rona, P.A., Butler, L.W., and Nalwalk, A.J., 1973, Petrological and structural significance of the Mid-Atlantic Ridge between 25N and 30N, Trans. Am. Geophys. Union, v. 54, p. 249.
5. Hajash, A., 1974, An experimental investigation of high-temperature seawater/basalt interactions, Geol. Soc. Am. Abstracts with Programs, p. 771.
6. Scott, R.B., and Hajash, A., 1975, Hydrothermal processes in the Atlantic Ocean crust, 25N, International Union of Geodesy and Geophysics, XVI General Assembly, p.265.
7. Hajash, A., 1975, Mineralogy and chemistry of experimental seawater-basalt interactions, 200-500C, Trans. Am. Geophys. Union, v, 55, p. 44.
8. Hajash, A. and Tieh, T.T., 1976, Experimental seawater/basalt reactions, 200- 500C, 500-2000 bars: additional mineralogical data, Geol. Soc. Am. Abstracts with Programs, v. 8, p. 899.
9. Hajash, A., 1977, The seawater/basalt system: an experimental study at 200- 600C, 500-1000 bars, Triennial Meeting of the Mineralogical Society of Great Britain and Ireland, Symposium on Solid-Fluid Interactions, Leeds, England, p. 20. (invited paper).
10. Hajash, A., 1977, Experimental seawater/basalt interactions: effects of water/rock ratio and temperature gradient, Geol. Soc. Am. Abstracts with Programs, p. 1002.
11. Hajash, A., and Chandler, G.W., 1980, Incipient chemical exchange between seawater and rhyolite ar high temperatures, EOS, Trans. Am. Geophys. Union, v. 61, p. 997.
12. Hajash, A. 1982, Proposed design for a flow-through water/rock reaction system , Amoco Production Company, Tulsa Research Center.
13. Hajash, A., and Nagy, K., 1982, Experimental seawater/basalt interaction: REE distribution patterns, Geol. Soc. Am. Abstracts with Program, v. 14, p. 113.
14. Hajash, A., 1983, Seawater/gabbro interaction at 400C, 1000 bars: A preliminary kinetic study, Geol. Soc. Am Abstracts with Program., v. 15, p. 317.
15. Hajash, A., 1983, Operating procedures and applications of the flow-through experimental water/rock reaction system (invited presentation), Amoco Production Company, Tulsa Research Center.
16. Hajash, A. and Popp, R.K., 1983, Hydrothermal interactions between seawater and diabase: a kinetic study at 400C, 1 kb, Geodynamics Symposium on Oceanic Lithosphere. Texas A&M University, 1983.
17. Lin, S., Popp, R.K., and Hajash, A., 1983, Solubility and complexing of nickel in supercritical aqueous chloride solutions, Geol. Soc. Am. Abstracts with Program, v. 15, p.
18. Pope, L.A., Hajash, A., and Popp, R.K., 1983, Experimental investigation into geothermometry inconsistencies in West Texas thermal waters, Geol. Soc. Am. Abstracts with Program. v. 15, p. 14.
19. Hajash, A., 1985, Experimental alteration of feldspars and feldspathic sands in open and closed systems (invited presentation), Amoco Production Company, Tulsa Research Center.
20. Hajash, A. and Paolini, M., 1985, Experimental hydrothermal alteration of feldspathic sand: The influence of solid composition, EOS, Trans. Am. Geophys. Union, v.66, 1154.
21. Hajash, A., 1986, Marine diagenesis of feldspathic sand: An experimental study in a flow-through hydrothermal system, Geol. Soc. Am. Abstracts with Program, v.18, 624.
22. Burns, G. and Hajash, A., 1988, The solubility of natural quartz sand at 150C and 345 bars: An experimental investigation in a flow-through hydrothermal system, Geol. Soc. Am. Abstracts with Program, v.20, A391.
23. Elias, B.and Hajash, A., 1988, The role of effective stress on silica solubility and pressure solution: An experimental investigation in a flow-through system, Geol. Soc. Am. Abstracts with Program, v.20, A375.
24. Richards, J.A. and Hajash, A., 1988, Chemical exchange between seawater and non-stoichiometric dolomite: An experimental study in a flow-through system, Geol. Soc. Am. Abstracts with Program, v.20, A262.
25. Burns, G.L. and Hajash, A., 1989, Diagenesis and Solubility of Quartz Sand: An Experimental Study in a Flow-Through System, Geol. Soc. Am. Abstracts with Program, v.21, p. 5-6.
26. Elias, B.P. and Hajash, A., 1989, Compaction of unconsolidated St. Peter sand under non-zero effective stress: an experimental investigation, Geol. Soc. Am. Abstracts with Program, v.21, p. 10.
27. Elias, B.P., and Hajash, A., 1989, Experimental compaction and dissolution of St. Peter sand Physical and chemical evidence for pressure solution, Geol. Soc. Am. Abstracts with Program, v.21, p. A224.
28. Hajash, A. , Mahoney, A.J., and Elias, B.P., 1989, Role of carboxylic acids in the dissolution of silicate sands: An experimental study at 100C, 345 bars, Geol. Soc. Am. Abstracts with Program, v.21, p. A48.
29.Elias, B.P. and Hajash, A., 1990, Alteration of clay within a styolite: a diagenetic transformation of illite to muscovite, Geol. Soc. Am. Abstracts with Program, v.22, p. A 38.
30. Elias, B.P. and Hajash, A., 1990, Experimental compaction and dissolution of St. Peter sand Physical and chemical evidence for pressure solution, Ocean Drilling Program Second Annual Spring Symposium, Texas A&M; University. p. 37.
31. Hajash, A., 1990, Mineral solubility, transport and deposition: flow-through experimental studies, Gas Research Institute Pressure Compartment Project, 2nd Annual Review Meeting, Penn. State University, State College, Pa.
32. Mahoney, A. J., Hajash, A., and Elias, B. P., 1990, An experimental study of the dissolution of silicate sands by carboxylic acids at 100C, 345 bars, Ocean Drilling Program Second Annual Spring Symposium, Texas A&M; University. p. 65.
33. Reed, C.L. and Hajash, A., 1990, Effect of flow rate on dissolution of granitic sand in oxalic acid: Flow-through experiments at 100C, 345 bars, Geol. Soc. Am. Abstracts with Program, v.22, p. A 291.
34. Reed, C.L. and Hajash, A., 1990, The role of oxalic acid on the dissolution of feldspathic sand: An experimental investigation in a flow-through system, Ocean Drilling Program Second Annual Spring Symposium, Texas A&M; University. p. 78.
35. Hajash, A., and Elias, A., 1990, The role of effective stress on compaction and pressure solution: An experimental investigation at 150C, Geol. Soc. Am. Abstracts with Program, v.22, p. A 315.
36. Franklin, S.P., Hajash, A., and Tieh, T.T., 1990, Experimental dissolution of albite and quartz sands in a buffered oxalate/acetate solution at 100C and 347 bars in a flow-through system, Geol. Soc. Am. Abstracts with Program, v.22, p. A 314.
37. Franklin, S. P., Hajash, A., and Tieh, T.T., 1991, The role of organic acids in feldspar and quartz dissolution at 100C/347 bars: An experimental study in a flow- through system: American Association of Petroleum Geologists Bulletin, v. 73, p. 576.
38. Franklin, S. P.and Hajash, A., 1991, Organic acids and secondary porosity development: Annual Awards Meeting of the Houston Geological Society, Houston, Texas (April '91).
39. Franklin, S. P. and Hajash, A., 1991, Experimental dissolution of albite and quartz sands in a buffered oxalate-acetate solution at 100C and 347 bars in a flow- through system: Ocean Drilling Program Third Annual Spring Symposium, Texas A&M University. p. 17.
40. Dewers, T.A. and Hajash, A., 1991, Mechanical and chemical compaction of natural quartz sand: An experimental and theoretical study, Geol. Soc. Am. Abstracts with Program, v.23, p. A 361.
41. Franklin, S.P., Hajash, A., and Tieh, T.T., 1991, The role of organic acids in feldspar dissolution and secondary porosity development: An experimental study, Geol. Soc. Am. Abstracts with Program, v.23, p. A 151.
42. Dewers, T. A. and Hajash, A., 1992, Experimental Constraints on chemical mechanism of sandstone compaction, Invited Presentation at the 29th International Geological Congress, Kyoto, Japan, August '92 (not presented because of death in family)
43. Hajash, A., 1992, Experimental feldspar dissolution in acetic and oxalic acids at 100C, 345 bars., Invited presentation at the 7th International Water/Rock Symposium, Park City, Utah, July, 1992.
44. Dewers, T. A. and Hajash, A., 1992, Experimental constraints on stress- enhanced water-rock interaction and pore-fluid expulsion during sandstone compaction, Invited Presentation, Geol. Soc. Am. Abstracts with Program, v.24, p. A 325.
45. Hajash, A., 1993, Feldspar dissolution in carboxylic acids at 100C, 345 bars: Solubility and kinetics data, Invited presentation at the American Chemical Society Symposium entitled Mineral/Matrix Effects in Organic Geochemistry, Chemical and Engineering News, Feb. '93, p. 72.
46. Dewers, T. A., and Hajash, A., 1993, Experimentally derived rate laws for water-assisted densification and stress-enhanced water-rock interaction in sandstones, Invited Presentation at the USGS Red Book Conference on Mechanical Involvement of Fluids in Faulting, Fish Camp, CA, June 6-11, 1993.
47. Elias, B. P., Hajash, A., and Dewers, T.A., 1993, The effects of clay on intergranular pressure solution: An experimental study, Geol. Soc. Am. Abstracts with Program, v.25, 1993 Annual Meeting in Boston.
48. Muhuri, S., Dewers, T.A., and Hajash, A., 1994, Possible role of diffusion in stress-enhanced quartz-water reaction rates and sandstone compaction, Geol. Soc. Am. Abstracts with Program, v.26, p. A 352.
49. Ahmed, R., and Hajash, A., 1994, Labradorite dissolution in aqueous organic acid solutions: an experimental study at 100C, 13.8 MPa, Geol. Soc. Am. Abstracts with Program, v.26, p. A 358.
50. Elmquist, R. V., Hajash, A., and Dewers, T. A., 1994, Dissolution and compaction of natural quartz sand as functions of temperature, pore-fluid pressure, and strain, Geol. Soc. Am. Abstracts with Program, v.26, p. A 490.
51. Yang, B., and Hajash, A., 1994, Solubility and dissolution kinetics of albite in pH-buffered solutions of acetate, oxalate, citrate and BTCA: An experimental study at 100C, 13.8 MPa, Geol. Soc. Am. Abstracts with Program, v.26, p. A 358.
52. Carpenter, T. D., and Hajash, A., 1995, Deformation in reactive pore fluids: Experimental compaction of albite sand in organic acids at 100C and 160C, Geol. Soc. Am. Abstracts with Program, v.27, p. A 94.
53. Muhuri, S., Dewers, T.A., and Hajash, A., 1995, Pressure solution in quartz, calcite and halite systems: A unifying rate law, Geol. Soc. Am. Abstracts with Program, v.27, p. A 216.
54. Yang, B., and Hajash, A., 1995, Albite dissolution in acetic, oxalic and citric acids: Effects of speciation and reaction history, Geol. Soc. Am. Abstracts with Program, v.27, p. A 248.
55. Muhuri, S., Dewers, T., and Hajash, A., 1996, Pressure solution and Ostwald Ripening: Mechanisms for mass transfer within healing fault zones: Conference on Faulting, Fault Sealing, and Fluid Flow in Hydrocarbon Reservoirs, University of Leeds, September 1996.
56. Yang, B., and Hajash, A., 1996, Albite dissolution in acetic, citric, and inorganic acids: An experimental study at 100°C, 13.8 Mpa at pH 2-7, Geol. Soc. Am. Abstracts with Program, v.28, p. A-32.
57. Muhuri, S., Dewers, T.A., and Hajash, A., 1996, Influence of clay content and surface morphology on pressure solution compaction in calcite aggregates, Geol. Soc. Am. Abstracts with Program, v.28, p. A-35.
58. Hajash, A., 1998, Experimental investigations of water/rock interactions in flow-through hydrothermal systems: solution-transfer creep in quartz sands, Chinese University of Geosciences, Wuhan, PRC, Invited presentation, 6/98.
59. Hajash, A., 1998, Experimental investigations of water/rock interactions in flow-through hydrothermal systems: Dissolution of Feldspar in Inorganic and Inorganic Acids, Chinese University of Geosciences, Wuhan, PRC, Invited presentation, 6/98.
60. Hajash, A., Yilmaz, R., Kronenberg, A., Chester, F., Chester, J., 1998, Fluid-assisted compaction of quartz aggregates at low temperature and subcritical effective pressure, Trans. Am. Geophys. Union, v. 79, p.
61. Hajash, A, He, W., 1999, Creep compaction of quartz sand: effects of pore-fluid flow rates, Am.Geoph. Union, EOS Trans Amer Geophys. Union, v. 80, p. 171
62. He, W., Lang, R., Chester, F., Chester, J., Hajash, A., and Kronenberg, S., 1999, Creep compaction of quartz aggregates under dry and fluid-saturated conditions, Am.Geoph. Union, EOS Trans Amer Geophys. Union, v. 80, p. 239.