NORTON, STEPHEN A., JEFFREY S. KAHL, MYRON J. MITCHELL, AND JEFFREY S. OWEN. Another reply to the comment

1991, 0 1, 199 Lim- A. p. 3 1 17. In E. An 31: 280. 1987. 6 A., S. S. E. 199 1. comment OWEN. 199 1. comment 36: 127 274. 36: OWEN, S., 1989. 1263-1265. W., 1982. p. In S. 12: W. 1978. 45 A. 1984. ments. Int. 20: 636-641. 198 1. time: 29: 236-249. 79: 19. P. B. OWEN, W. A. V. 1989. A. 1986. mochim. 53: 2547-2559. 1271-1274 of We cm I Submitted: 5 199 1. increas- - cores sediment lake different the February in upward responses various showing 2) ure (fig- data concentration presented (1988) al. neces- not do changes concentration these et Mitchell S. of accumulation of rate the However, S. the concentrate or dilute may in increase independent an and component rate sedimentation gross the in Variations sedimentation of rate bulk a into S total of S). ppm (1,600-9,600 g-l pmol 300 to 50 changes separate to and rates accumulation from ranges S of concentration the (1988), al. the in changes assess to possible is it rect, et Mitchell and (1988), al. et Norton al., et cor- is dating 210Pb the that Assuming U.S. Giblin by on reported lakes the In ments. the of half eastern the in located are SO, sedi- lake typical in element trace a is S lake-water of concentrations elevated with S. of burial of rate the on bearing no have lakes the All 210Pb. with dated cores sediment may trend This 1900.” predating horizons from data utilized (1988) al. et Norton and sediment in recorded than S total of ours] (1988) al. et Mitchell hand, other the On ...