Recent Publications

1.      Displacement rates on the Toroweap and Hurricane faults: Implications for Quaternary downcutting in the Grand Canyon, Arizona.  Geology  29, 1035-1038 (2001) (C.R. Fenton, R.H. Webb, P.A. Pearthree, T.E. Cerling and R.J. Poreda)

2.      The organic content of the Tagish Lake Meteorite. Science 293, 2236-2239 (2001)  (S. Pizzarello, Y. Hang, L. Becker, R.J. Poreda,  R.A. Nieman, G. Cooper,  M. Williams)

3.      Large groundwater strontium flux to the oceans from the Bengal Basin and the marine strontium isotope record.  Science  293, 1470-1473 (2001) (A.R. Basu, S.B. Jacobsen, R.J. Poreda, C.B. Dowling and P.K. Aggarwal) [.pdf]

4.      Regional variations in volatile composition: Isotopic evidence for carbonate recycling in the Central American volcanic arc. Geochemistry, Geophysics , Geosystems  2, DOI number 10.1029/2001GC000163  (Glen Snyder, Robert Poreda, Andrew Hunt, and Udo Fehn) Published 22 October 2001[.pdf]

5.      Geochemical study of arsenic release mechanisms in the Bengal Basin groundwater Water Resources Research 38, 1173-1190 (2002)  (Dowling, Carolyn B.; Poreda, Robert J.; Basu, Asish R.; Peters, Scott L.; Aggarwal, Pradeep K.) [.pdf]

6.      Strontium isotopes and rare earth elements as tracers of groundwater-lake water  interactions, Lake Naivasha, Kenya,  Applied Geochemistry 18, 1789-1805 (2003) (B. Ojiambo,W.B. Lyons, K.A. Welch, R.J. Poreda and K.H. Johannesson)

7.       The ground  waters of the Bengal Basin; their geochemistry and trace metal flux to the ocean.  Geochimica et Cosmochimica Acta 67, 2117-2136 (2003) (Dowling, C. B.; Poreda, R. J.; Basu, A. R) [.pdf]

8.      Fullerenes and Interplanetary Dust at the Permian-Triassic Boundary  Astrobiology  3, 75-90 (2003) (Robert J. Poreda and Luann Becker)

9.      Chondritic Meteorite Fragments Associated with the Permian-Triassic Boundary in Antarctica  Science 302, 1388-1392 (2003). (A. Basu, M. I. Petaev, R. J. Poreda,  S. B. Jacobsen and L. Becker) [.pdf]

10.    Alabama Gulf Coast groundwaters: ⁴He and ¹⁴C as groundwater-dating tools. Geology  32, 289-292 (2004) (Anne Carey, Carolyn Dowling and Robert Poreda) [.pdf]

11.    Ground water discharge and nitrate flux to the Gulf of Mexico   Ground Water 42, 401-417 (2004) (Dowling, C. B.; Poreda, R. J.; Hunt, A.G. and Carey, A.E.) [.pdf]

12.     Chemical and isotopic evolution of Lake Bonney, Taylor Valley:  Timing of Late Holocene climate change in Antarctica Aquatic Geochemistry 10, 353-371 (2004)  (R.J. Poreda, A.G. Hunt, K. Welch and W. B. Lyons) [.pdf]

13.     Bedout: A Possible End-Permian Impact Crater Offshore of Northwestern Australia,  Science   304, 1469-1476 (2004) (L. Becker, R. J. Poreda, A. Basu, K.O. Pope, T.M. Harrison, C. Nicholson, R. Iasky) [.pdf]