Community Paleoecology of the Mifflin Submember: (Middle Ordovician) in WisconsinUniversity of Wisconsin--Madison., 1976 |
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Page 2
... thin shaley partings . In southwest Wisconsin the McGregor Member is limestone , but it becomes dolomitic in the south - central section of the state , in the area assumed to be related to an ancient topographic high called the ...
... thin shaley partings . In southwest Wisconsin the McGregor Member is limestone , but it becomes dolomitic in the south - central section of the state , in the area assumed to be related to an ancient topographic high called the ...
Page 10
... Thin - medium bedded dense , moderately fossiliferous , purplish - brown to gray , micrite / bio- micrite which fractures conchoidally ( " glass rock " ) and becomes dolomitic eastward . Subordinate thin shaley partings . Unit thins and ...
... Thin - medium bedded dense , moderately fossiliferous , purplish - brown to gray , micrite / bio- micrite which fractures conchoidally ( " glass rock " ) and becomes dolomitic eastward . Subordinate thin shaley partings . Unit thins and ...
Page 11
... thin shaley partings . Both submembers are limestone in the southwestern and far eastern sections of the state and ... thin , nodular mudstone - fossiliferous pack- stone with extremely wavy bedding and numerous thin shaley partings ...
... thin shaley partings . Both submembers are limestone in the southwestern and far eastern sections of the state and ... thin , nodular mudstone - fossiliferous pack- stone with extremely wavy bedding and numerous thin shaley partings ...
Contents
VII | 41 |
COMPARISONS WITH OTHER EARLY PALEOZOIC | 49 |
ENVIRONMENTAL RECONSTRUCTION | 54 |
1 other sections not shown
Common terms and phrases
Actinoceras bedded bellerophontid benthic bivalve brachiopod Bretsky bryozoans burrowing cephalopods Ceraurus coelenterates coquinoid layers County Crinoids deposit feeders diverse dolomite facies ecologic environment of deposition Eoleperditia community epeiric seas epifaunal fauna faunal elements Figure fossil assemblages genus Geol Hesperor Hesperorthis Hesperorthis-Eoleperditia community Hesperorthis-Sinuites community infaunal Jour Lambeophyllum level suspension feeder limestone limestone facies lithologies low level suspension McGregor Member Michelinoceras Middle Ordovician Mifflin communities Mifflin Submember Model mud-poor mud-rich munity nektobenthonic number of specimens numbers signify tied open shelf Opikina ostracod packstone Paleoecology Paleozoic Pecatonica pedicle Petrology Platteville Formation Quarry quiet water Quimbys Mill rank numbers signify relative abundance represent Rhynchotrema Roadcut scavenger sed/water inter sed/water interface sediment sediment-water interface sedimentary structures semi-infaunal sessile shells signify tied ranks Sinuites Sowerbyella-Onniella community stratigraphic Strophomena study area suspension feeders thin shaley trace fossils trilobite Trochonema trophic group trophic structure underlined rank numbers Vanuxemia Walker wave base Wisconsin Arch Ziegler