Junction Maquoketa and Mississippi Rivers

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Journal Article
Published: 01 April 1943
Journal of Sedimentary Research (1943) 13 (1): 40–42.
Journal Article
Published: 01 April 1942
Journal of Sedimentary Research (1942) 12 (1): 3–9.
...Frank Albert Swenson Abstract Sediment samples indicate that the Maquoketa River has been, in the past, an important factor in the deposition that has taken place in the Mississippi River in a reach extending at least 41/2 miles below the junction of these streams. It is believed...
Journal Article
Journal: AAPG Bulletin
Published: 01 March 1969
AAPG Bulletin (1969) 53 (3): 672–678.
... in the east bluff of the Mississippi River near Sinnipee Cemetery and north of Sinnipee Creek in the SW¼ NE¼, Sec. 7, T1N, R2W, Dubuque North quadrangle, Grant County, Wisconsin, in which the Platteville, Decorah, and most of the Galena are exposed. The exposed section extends from the top of the St. Peter...
Journal Article
Journal: AAPG Bulletin
Published: 01 August 1961
AAPG Bulletin (1961) 45 (8): 1364–1377.
... to be at the same level. According to the section along the Mississippi Valley ( Fig. 6 ) Ulrich’s Chazy of central Tennessee is a facies of the Viola (Trenton-Black River). Fig. 6. —Ordovician of Mississippi Valley. Sources of information: Bevan (1926) , Bassler (1932) , Du Bois (1945) , Freeman (1949...
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Journal Article
Journal: AAPG Bulletin
Published: 01 September 1951
AAPG Bulletin (1951) 35 (9): 2041–2075.
... member is essentially plate-like. The Plattin has been classified as Bolarian, Black River in age, and correlated with the Platteville of the upper Mississippi valley. Faunules from the upper Macy suggest that those beds are lower Trentonian. Lower formations resemble the Bolarian in central Kentucky...
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Journal Article
Journal: AAPG Bulletin
Published: 01 March 1948
AAPG Bulletin (1948) 32 (3): 351–365.
... the oolitic and conglomeratic limestone and the top of the chert, aforementioned, the name Rock Levee is here proposed. Location. —The study is primarily one of subsurface and embraces most of that part of eastern Missouri more or less contiguous to the Mississippi River as shown by Figure 1 . Fig...
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Journal Article
Journal: AAPG Bulletin
Published: 01 May 1940
AAPG Bulletin (1940) 24 (5): 765–858.
... receives its name from Kinderhook, Pike County, Illinois, where good exposures occur in the east bluffs of the Mississippi River valley. Its lithology, stratigraphy, and faunas are so diverse that no single stratigraphic section can be considered typical. It consists of several formations, most of them...
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Journal Article
Journal: AAPG Bulletin
Published: 01 April 1955
AAPG Bulletin (1955) 39 (4): 444–467.
... limits of the St. Peter. In Michigan the Black River occurs east of the subsurface edge of the St. Peter. Southeast of the major occurrence of the St. Peter the depositional edge of the sandstone is reached in Indiana, Kentucky, and parts of Ohio. Here the great sheet of sand terminates rather abruptly...
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Journal Article
Published: 01 March 2020
Journal of Paleontology (2020) 94 (2): 334–357.
... in the Brechin Lagerstätte also occur elsewhere in Laurentia, including the Dunleith and Maquoketa formations of northern Iowa and southern Minnesota, and C . vancortlandi is also known from the Decorah and Curdsville formations of Kentucky. Both species were reviewed and thoroughly described by Brower ( 1996...
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Journal Article
Published: 01 September 2002
Seismological Research Letters (2002) 73 (5): 698–731.
... neotectonic and seismic history, which is also attributable to strain partitioning along the zones of accommodation. The northern tectonic domain constitutes part of the Mississippi River arch, which lies north of St. Louis, Missouri. This arch separates the northern part of the Illinois basin from the Forest...
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Series: GSA Special Papers
Published: 15 October 2019
DOI: 10.1130/2019.2543(01)
EISBN: 9780813795430
... of the ancient Rock River system that is connected to a deeply entrenched buried valley system in northern Illinois ( Horberg, 1946 ). The smoothed upstream curvature of the Wisconsin River Valley at its junction with the Mississippi River Valley supports the idea of extended duration flow eastward...
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Journal Article
Journal: AAPG Bulletin
Published: 01 January 1952
AAPG Bulletin (1952) 36 (1): 1–72.
... in this area. Two long, irregular, broad bands of Athens crop out north and northwest of Greeneville where they lie in two broad synclines. Another broad band occurs in the Holston River valley. Northeastward it passes into the south-central part of the Estillville Quadrangle. At the east edge of Greeneville...
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Journal Article
Published: 01 July 2002
Journal of Paleontology (2002) 76 (4): 607–637.
... fronds arising at right angles to the primary frond. A median lamina is present within all fronds developed above the basal encrustation; it is typically continuous, but may be locally absent, especially at frond junctions or in encrusting basal areas. Zooecial and mesozooecial walls are well laminated...
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Journal Article
Published: 01 May 2011
Journal of Paleontology (2011) 85 (3): 406–441.
.... Occipital furrow narrow, deepest at axial furrow junctions, occipital ring narrowing laterally, ends flexed anteriorly. Anterior border narrow, gently convex (tr.), extending laterally beyond axial furrows; eyes small, high and pointed, located opposite posterior end of L2, trace of narrow eye ridge...
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