..., Illinois) were not widely reported by syndicated news media. The felt area extends further than that of previous studies—from the Ohio River to northern Wisconsin, and from Lansing, Michigan, to near Cedar Rapids, Iowa. The felt area centers near Sandwich, Illinois; the highest intensity, VII, is assigned...

... AquaSmart™/L stock solution; D = 35 g sucrose/L stock solution. The two organic carbon amendments chosen for this study were sucrose (Dixie Crystals, Imperial Sugar, Inc., Sugar Land, Texas) and a nutrient additive (AquaSmart, Diamond V, Cedar Rapids, Iowa). The untreated control series, which...

..., and then it bends southwest through Iowa, eventually ending under Kansas ( Stein et al., 2015 ; Hinze and Chandler, 2020 ). The Midcontinent Rift System experienced several episodes of voluminous magmatic eruption between 1112 and 1090 Ma ( Woodruff et al., 2020 ). Based on geochronology, lithology...

..., even under conditions of rapid deposition. The sandstones are ordinarily more massive than the silts, although bedding planes may be only an inch or so apart. Cross lamination and channeling are common. Limestone-pebble conglomerates, similar to those of the Gothic formation, are associated...

... of their employment. 1964 RESEARCH DIVISION, COLLINS RADIO CO., CEDAR RAPIDS, IOWA ...

... previously unreported from Devonian rocks. Relationships with other Devonian faunas are discussed. It is concluded that an earlier reported occurrence of this fauna from the Solon member of the Cedar Valley is in error; evidence is presented indicating the source was from the Rapid member. information...

..., and most accurate, when applied to species that are abundant in the assemblage. The Devonian Fossil Gorge, near Coralville, Iowa, USA, is an approximately 12-meter-thick section that exposes the surfaces of Givetian (Mid-Devonian) limestones of the Rapid and Solon Members of the Little Cedar...

... plots for Cedar Rapids, Iowa. The plots for 0.2-sec re- sponse show even greater competition for dominance be- tween local and New Madrid seismic zone hazards. For 0.2-sec response associated with a 2% in 50 year probability ofexceedance, ~7/ _- 6.10 and/ ) = 233.2 kin, correspond- 4 s. Harmsen, D...

... of the subzone are given in the descriptions of the subterminus Zone (above) and the Middle subterminus Subzone (below). The Lower subterminus Subzone was identified in the Conklin Quarry section (Iowa), in the uppermost part of the Rapid Member (Little Cedar Formation), in samples SUI 100609, 100608...

... swayed, and houses and other objects trem- bled. Similar effects were reported from many places in southeastern Iowa, including Keokuk, Burlington, Ottumwa, Lineville, Muscatine, Davenport, Clinton, Bellevue, Mount Vernon, and Cedar Rapids. At Cedar Falls one person is reported to have felt the shock...

... within the Cedar Valley limestone in wells is difficult. The main marly beds probably represent the Atrypa bellula zone of the Rapid limestone member. Some of the Solon member of the Cedar Valley is present beneath the marl in Illinois, and the higher limestones may be upper Rapid in age...

.... Precipitation Annual avg. precipitation/PET † °C mm °C mm °C mm mm/mm Albany, GA 33 (July) 151 (July) 8 (Dec.) 58 (Oct.) 19 1263 1.10 Cedar Rapids, IA 23 (July) 112 (June) −8 (Jan.) 25 (Jan.) 9 915 1.03 Apple Valley, CA 37 (July) 26 (Feb.) −1 (Jan.) 1.3 (June) 16...

.... Harris and Parker (1964) separated the Burlington Limestone into three lithologically distinct members. These include in ascending order: the Dolbee Creek, Haight Creek, and Cedar Fork members. The Dolbee Creek and Haight Creek members represent the traditional lower Burlington strata, and the Cedar...

... road cuts, natural exposures along lakeshores, and cores housed at the Iowa Geological Survey. These measured sections span the Cedar Valley Group from the Little Cedar Formation, Coralville Formation, to the Lithograph City Formation, excluding the uppermost Lime Creek Formation ( sensu Witzke 1987...

... areas and interstate highways. The map area includes the New Madrid seismic zone; the scattered seismicity to the north between the seismic zone, St. Louis, and Indianapolis; and sparser earthquakes from Little Rock and Huntsville to the south to Cedar Rapids, Chicago, and South Bend to the north...

...–6764, 3, sediment-filled boring network viewed by transmitted light through 1 mm thick slab, 4, tracing of boring in 3 ; 5, 6, Fenton and Fenton's (1932) previously unfigured plesiotype, UC–37038, from Middle Devonian Cedar Valley Group, Iowa, 5, multiple chambers with at least one...

... ); 2. Middle Devonian Hamilton Group, south-western Ontario (Legault 1973 ); 3. Eifelian–Givetian Kwataboahegan, Moose River, Murray Island, and Williams Island formations, Moose River Basin, Ontario (Playford 1977 ); 4. Givetian Rapid Member of Cedar Valley Formation, Iowa (Wicander & Wood 1997...

... at the University of Iowa, their work on the Cedar Mountain Formation was supported by many associates including Scott Carpenter, Kay Saville, Vicki Grassian, Greg Carmichael, David Ufnar, Brian Witzke, Bob Brenner, and Jeremy Davis. At the University of Kansas, our efforts have been aided by Laura Murphy, Jon J...

..., except for E ray, which has five; eight arms total. Questionably assigned to either the upper part of the Burlington Limestone or Montrose Chert Member of the Keokuk Limestone, Burlington, Iowa. Definite occurrence in the Fort Payne Formation, Whites Creek Springs, Tennessee. One specimen...

... strata such as mudrocks and carbonates. We thank University of Iowa students Ben Howard, Cole Gardner, and Alethea Kapolas for assistance with field work, sample preparation, and analysis. Brad Cramer assisted with acid digestion. This work is supported by U.S. National Science Foundation grants...