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Books Books 1 - 10 of 10 on Orthoceras bed; light brown, earthy, nonlaminated, rather hard layer, which some....
" Orthoceras bed; light brown, earthy, nonlaminated, rather hard layer, which some writers have described as limestone; not very calcerous; crowded with shells of Orthoceras sociale, which are generally crushed and otherwise imperfect, some of the partially... "
Annual Report for ... with Accompanying Papers - Page 431
1900
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Annual Report for ... with Accompanying Papers, Volume 10

Iowa Geological Survey - Geology - 1900
...specimens of Orthoceras sociale, together with cephalic shields and pygidia of Calymene mamillatus 1 2 15. Shale, drab, very fissile, somewhat sandy,...Shale varying in thickness, dark gray in color. 0 1-3 10. Third Orthoceras bed, resembling 12 and 14.. 0 10 9. Thin bed of dark, fissile shale; irregular...
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Iowa Geological Survey, Volume 10

Geology - 1900
...which some writers have described as limestone; not very calcareous; crowded with shells of Ortfwceras sociale, which are generally crushed and otherwise...the name of Spatiopora iowensis 0 6 • 12. Fourth Orihoceras bed, lithologically the same as number 14, Orthoceras very numerous and crowded, more perfect...
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Bulletin, Issues 292-296

Geology - 1906
...shells of Orthoctras ."oci'aV which are generally crushed and otherwise imperfect, some of the partiaDy decomposed shells still retaining the original nacreous...Fissile, slaty shale, dark gray in color, containing many Wade-like or sheath-like impressions of Spatiopora iou'fnsis I" I rich 6 12. Fourth Orlhoceras bed,...
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Bulletin - United States Geological Survey, Issue 294

Geological Survey (U.S.) - Geology - 1906
...nonlaminated, rather hard layer, which some writers have described as limestone; not very calcerous; crowded with shells of Orthoceras sociale, which are...containing many blade-like or sheath-like impressions of Spatiopora iowensis Ulrich 6 12. Fourth Orthoceras bed, lithologically the same as No. 14; Orthoceras...
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Bulletin, Issue 21

Geology - 1914
...nonlaminated, rather hard layer, which some writers have described as limestone; not very calcerous; crowded with shells of Orthoceras sociale, which are...containing many bladelike or sheath-like impressions of Spatiopora iowensis Ulrich. . 6 12. Fourth Orthoceras bed, lithologicully the same as No. 14; Orthoceras...
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Zinc and Lead Deposits of the Upper Mississippi Valley

Harry Foster Bain - Lead mines and mining - 1906 - 155 pages
...Orthoctrax socialr, which arc generally crushed and otherwise imperfect, some of the partially decoraposed shells still retaining the original nacreous luster...containing many blade-like or sheath-like impressions of Spaliopora iowtnsia Ulrica ............................................................... 6 12. Fourth...
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Rural highways of Wisconsin, Issue 18

William Otis Hotchkiss - Nature - 1906 - 136 pages
...otherwise imperfect, some of the partially decomposed shells still retaining the original nacrcous luster 1 13. Fissile, slaty shale, dark gray in color,...containing many blade-like or sheath-like impressions of Spaliopvra iowensix Ulrich 6 12. Fourth Orthoeeras bed. lithologieally the same as No. 14; Orthoceras...
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Bulletin

Geology - 1907 - 155 pages
...nonlaminated, rather hard layer, which some writers have described as limestone; not very calcerous; crowded with shells of Orthoceras sociale, which are...containing many blade-like or sheath-like impressions of Spatiopora iowensis Ulrich 6 12. Fourth Orthoceras bed, lithologically the same as No. 14; Orthoceras...
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Bulletin

Geology - 1907 - 155 pages
...sociale, which are generally crushed and otherwise imperfect, some of the partially decom- • posed shells still retaining the original nacreous luster...containing many blade-like or sheath-like impressions of Spatiopora iowensis Ulrich : : 6 12. Fourth Orthoceras bed, lithologically the same as No. 14; Orthoceras...
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The origin of the lead and zinc ores of the upper Mississippi valley district

Guy Henry Cox - Lead ores - 1911 - 44 pages
...otherwise imperfect, some of the partially decomposed shells still retaining the original nacreous luster I 13. Fissile, slaty shale, dark gray in color, containing many blade-like or sheath-like impressions of Spatiopora iowensis Ulrich 6 12. Fourth Orthoceras bed, lithologically the same as no. 14; Orthoceras...
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