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Lithics Home | Counties A-Z | Geologic Systems | Lithic Types | Chert Drawers | Lithics Program   Drawer # 21 System(s): Silurian (Lower)     Lithic Type: Scotch Grove County(s): Linn   Lithic Type: Palisades Kepler County(s): Linn   Lithic Type: Buck Creek Quarry County(s): Winneshiek   Lithic Type: Hopkinton County(s): Clayton/Delaware   Lthic Type: Hopkinton County(s): Dubuque   (Rear) Palisades Kepler Linn Co. LN-F 494 + Palisades Kepler Linn Co. LN-G 495 Hopkinton Delaware Co. DW-E 454+ Hopkinton Dubuque Co. DB-H 289 Palisades Kepler Linn Co. LN-F 494 Palisades Kepler Linn Co. LN-G 495+ + Hopkinton Delaware Co. DW-E 454 Hopkinton Dubuque Co. DB-H 289 + Palisades Kepler Linn Co. LN-D 450+ Buck Creek Quarry Winneshiek Co. WH-D 451 Hopkinton Clayton Co. CT-J 482 + Hopkinton Dubuque Co. DB-I 291 Palisades Kepler Linn Co. LN-D 450 Buck Creek Quarry Winneshiek Co. WH-D 451+ Hopkinton Clayton Co. CT-J 482 Hopkinton Dubuque Co. DB-I 291 + Scotch Grove Linn Co. LN-O 515 + Hopkinton Clayton Co. CT-B 57 Hopkinton Clayton Co. CT-F 66 + Hopkinton Delaware Co. DW-G 509 Scotch Grove Linn Co. LN-O 515 Hopkinton Clayton Co. CT-B 57 + Hopkinton Clayton Co. CT-F 66 Hopkinton Delaware Co. DW-G 509 +   (Front) Updated by Tricia R. Bender, Web Designer Mary De La Garza, Web Master July 2009 Click here to go back to the OSA homepage. Click here to go to The University of Iowa website.