Calvin Image Database Search

Geology of Allamakee Co., Iowa


Bluff of Oneota, massive above, cherty partings at base, height is 60 feet

Photograph details:
Location: U.S., Iowa, Allamakee Co.; R.W. Section 16, S.W. gr., N.E. 1/4.

Geologic Age: Ordovician, Oneota Limestone.
Photographed by: Samuel Calvin. Lantern Slide No. 1623.
Photograph No. 4


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Gorge in Trenton Limestone at Pinney's Spring

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Twp. 95, R.V. Section 34, S.W. gr. N.W. 1/4.

Geologic Age: Ordovician, Trenton Limestone.
Photographed by: Samuel Calvin.
Photograph No. 6


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Gorge in Trenton Limestone at Pinney's Spring

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Twp. 95, R.V. Section 34, S.W. gr., N.W. 1/4.

Geologic Age: Ordovician, Trenton Limestone.
Photographed by: Samuel Calvin.
Photograph No. 7


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Saint Croix overlain by Oneota Limestone. The quarry is about 100 feet above base of bluff in Oneota.

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Harpers Ferry.

Geologic Age: Ordovician, Oneota Limestone.
Photographed by: Samuel Calvin. Lantern Slide No. 1643.
Photograph No. 15


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Overlying Saint Croix Sandstone, fold and dip shows beyond Bridge, dark line above railway marking the base of the Oneota.

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Near Creek, near Quandahl.

Geologic Age: Ordovician, Oneota Limestone.
Photographed by: Samuel Calvin. Lantern Slide No. 1632.
Photograph No. 17


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Iowa Bluff

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Twp., 100, R.W. Section 14, N.W. gr., S. 1/2.

Geologic Age: Ordovician, Oneota over Saint Croix.
Photographed by: Samuel Calvin. Lantern Slide No. 1630.
Photograph No. 20


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Hill of circumdenudation, base of leveled plain composed of St. Croix overlain by Oneota

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Twp. 100, R. V. Sec. 34, N. E. Gr.; South side of Oneota River.

Geologic Age: Cambrian & Ordovician, St. Peter Sandstone & Oneota Limestone.
Photographed by: Samuel Calvin. Lantern Slide No. 79.
Photograph No. 30


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Waukon Sphinx left by unequal weathering

Photograph details:
Location: U.S., Iowa; Allamakee Co.

Geologic Age: Ordovician, Oneota Limestone.
Photographed by: Samuel Calvin. Lantern Slide No. 107.
Photograph No. 27


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Owl's Head Mountain, capped by Oneota Limestone, a hill of circumdenudation over 300 feet high

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Twp. 99, R.V. Section I, N.W. gr.,.

Geologic Age: Ordovician, Saint Croix Sandstone.
Photographed by: Samuel Calvin. Lantern Slide No. 1644.
Photograph No. 18


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Columns of St. Croix sandstone

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Lane's Farm, Twp. 100, NR. IV, Section 31, N.W. gr., N.W. 1/4.

Geologic Age: Cambrian, St. Croix Sandstone.
Photographed by: Samuel Calvin. Lantern Slide No. 1646.
Photograph No. 1993


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Bluff on upper Iowa or Oneota River, Saint Croix capped by Oneota, height 300 ft. plus

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Bear Creek, near the south of.

Geologic Age: Ordovician, Saint Croix Sandstone, Oneota Limestone.
Photographed by: Samuel Calvin. Lantern Slide No. 1627.
Photograph No. 16


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In the gorge at Pinney's Spring

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Pinney's Spring.

Geologic Age: Ordovician, Trenton Limestone.
Photographed by: Samuel Calvin. Lantern Slide No. 1585.
Photograph No. 14


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Yellow River cutting through Prairie du Chien Limestone

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Ion, gorge at.

Geologic Age: Ordovician, Prairie du Chien Limestone.
Photographed by: Samuel Calvin. Lantern Slide No. 1621.
Photograph No. 31


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Flood waters carried boulders, where wash of hill emerges on small plain

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Dorchester, Twp. 100, R. V. Section 13.


Photographed by: Samuel Calvin. Lantern Slide No. 2509.
Photograph No. 36


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Small spring in Trenton Limestone

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Devil's Den, west of.

Geologic Age: Ordovician, Trenton Limestone.
Photographed by: Samuel Calvin. Lantern Slide No. 1609.
Photograph No. 39


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"The Elephant" Saint Croix covered by Oneota, over 300 feet high

Photograph details:
Location: U.S., Iowa, Allamakee Co.; French Creek Post Office, near, on upper Iowa or Oneota River.

Geologic Age: Ordovician, Oneota.
Photographed by: Samuel Calvin. Lantern Slide No. 1645.
Photograph No. 44


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Mississippi Bluff, Saint Croix at base, 300 ft., Oneota above, 100 feet

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Lansing, fourth bluff below.

Geologic Age: Ordovician, Saint Croix & Oneota.
Photographed by: Samuel Calvin. Lantern Slide No. 1634.
Photograph No. 47


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Photograph details:
Location: U.S., Iowa, Allamakee Co.; Waukon, Northeast of, Twp. 99, R. VI, Section 36, N. W. gr., S. E. 1/4.

Geologic Age: Ordovician, Iron Mine.
Photographed by: Samuel Calvin. Lantern Slide No. 1130.
Photograph No. 58


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Bluff of Oneota Limestone

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Waterville, below, Paint Creek Valley.

Geologic Age: Ordovician, Oneota Limestone.
Photographed by: Samuel Calvin. Lantern Slide No. 1628.
Photograph No. 55


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Oneota Limestone Oneota Limestone as a building stone

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Eitzen

Geologic Age: Ordovician, Oneota Limestone.
Photographed by: Samuel Calvin. Lantern Slide No. 1631
Photograph No. 65


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Effects of weathering on a bluff of Trenton Limestone

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Twp. 96, R. VI, Section 17, S.E. gr., S.E. 1/4, north of Postville.

Geologic Age: Ordovician, Trenton Limestone.
Photographed by: Samuel Calvin. Lantern Slide No. 1584.
Photograph No. 2000


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"Devil's Den"

Photograph details:
Location: U.S., Iowa, Allamakee Co.; "Devil's Den," Twp. 99, R. V, Section 19, N.W. gr., N.E. 1/4, N.E. corner.

Geologic Age: Ordovician, Trenton Limestone.
Photographed by: Samuel Calvin. Lantern Slide No. 254.
Photograph No. 1995


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Valley of the Yellow River

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Valley of the Yellow River, Twp. 96, R.V., Section 14, S.W. gr., N.W. 1/4.

Geologic Age: Ordovician, St. Peter Sandstone.
Photographed by: Samuel Calvin. Lantern Slide No. 1578.
Photograph No. 1985


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Bluff above Waukon Junction

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Waukon Junction.


Photographed by: Samuel Calvin.
Photograph No. 78


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Effects of weathering on a bluff of limestone illistrating thin bedding, etc.

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Twp. 96, R. VI, Section 17, S.E. gr., S.E. 1/4.

Geologic Age: Ordovician, Galena Limestone.
Photographed by: Samuel Calvin. Lantern Slide No. 1566.
Photograph No. 77


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Yellow River and bluff below Buckland

Photograph details:
Location: U.S., Iowa, Allamakee Co.; N.E.S.E. 16, Twp. 96, 4.

Geologic Age: Ordovician, Oneota Limestone.
Photographed by: Samuel Calvin.
Photograph No. 74


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Valley cut in St. Croix Sandstone

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Willard Bacon's, below.

Geologic Age: Ordovician, St. Croix Sandstone.
Photographed by: Samuel Calvin. Lantern Slide No. 224.
Photograph No. 70


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North fork Yellow River undermining cliff of St. Peter Sandstone

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Devil's Den, south of, six miles south of Waukon.

Geologic Age: Ordovician, St. Peter Sandstone.
Photographed by: Samuel Calvin. Lantern Slide No. 1619.
Photograph No. 66


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Showing cross-bedding, dark streaks due to glauconite

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Lansing.

Geologic Age: Ordovician, Saint Croix Sandstone.
Photographed by: Samuel Calvin. Lantern Slide No. 2558.
Photograph No. 63


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Ledge of Trenton Limestone, showing effects of weathering

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Twp. 96, R. W. Section 32, N. W. gr., N. W. 1/4.

Geologic Age: Ordovician, Trenton Limestone.
Photographed by: Samuel Calvin.
Photograph No. 61


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Photograph details:
Location: U.S., Iowa, Allamakee Co.; Upper Iowa or Oneota River, Twp. 99, VI, Section 21.

Geologic Age: Ordovician, Oneota Limestone.
Photographed by: Samuel Calvin. Lantern Slide No. 1624.
Photograph No. 59


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Driftless area looking down into gorge of Iowa River.

Photograph details:
Location: U.S., Iowa; Allamakee Co.

Geologic Age: Holocene
Photographed by: Samuel Calvin. Lantern Slide No. 1625.
Photograph No. 48

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Valley of Mineral Creek, cut in Oneota Limestone

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Twp. 99, R. VI, Section 14.

Geologic Age: Ordovician, Oneota Limestone.
Photographed by: Samuel Calvin. Lantern Slide No. 1635.
Photograph No. 45


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Mouth of cave at Devil's Den

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Devil's Den, Twp. 99 R. 5 Section 19 N. W. gr., N. E, 1/4, N. E. corner.


Photographed by: Samuel Calvin.
Photograph No. 40


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Profile of Painted Rock

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Waukon Junction, near.


Photographed by: Samuel Calvin. Lantern Slide No. 1633.
Photograph No. 37


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Limestone evenly bedded, fine quality of quary stone

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Twp. 100, R. V. Section 18, N. W. 1/4, N. E. corner, about 40 feet above Saint Croix.

Geologic Age: Ordovician, Oneota Limestone.
Photographed by: Samuel Calvin. Lantern Slide No. 1626.
Photograph No. 34


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Mount Hope, near view

Photograph details:
Location: U.S., Iowa, Allamakee Co.; North East 34, 100, 5.


Photographed by: Samuel Calvin.
Photograph No. 32


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Terrace of Wisconsin age

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Near Lansing.


Photograph No. 626


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Peneplain in northeastern Iowa; view looking north into the valley of the Oneota

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Twp. 99, R. VI, Section 36, N.W. gr., S.E. 1/4.


Photographed by: Samuel Calvin. Lantern Slide No. 1636.
Photograph No. 8


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Slab of Limestone Old green shales bed of the Lower Trenton. Orthis Dlamanella,subeauata,con. and Orthis Tricenaria con. Natural size

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Waukon, near.


Photographed by: Samuel Calvin, June 3, 1904. Lantern Slide No. 2008.

Photograph No. 545


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Driftless area, bluffs showing characteristic distribution of timber, the latter sharply limited to northern and northeastern slopes

Photograph details:
Location: U.S., Iowa, Allamakee Co.; Twp. 100, R.V.section 15.


Photographed by: Samuel Calvin. Lantern Slide No. 1637.
Photograph No. 71


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Any additional plates from the Calvin Collection are listed below.
These will be added to the database in due course, but if you are interested in seeing them in advance, please contact Tiffany Adrain.

Updated 3/3/2011 AAG


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