Iowa Heritage Digital Collections
State Library of Iowa

Browse Items (48 total)

Effects of weathering on a bluff of limestone illustrating thin bedding, etc., Iowa, late 1890s or early 1900s

Effects of weathering on a bluff of limestone illustrating thin bedding, etc., Iowa, late 1890s or early 1900s

Located in Twp. 96, R. VI, Section 17, S.E. gr., S.E. 1/4.
Ledge of Trenton Limestone showing effects of weathering, late 1890s or early 1900s

Ledge of Trenton Limestone showing effects of weathering, late 1890s or early 1900s

Located at Twp. 96, R. W. Section 32, N. W. gr., N. W. 1/4.
Bluffs in driftless area showing characteristic distribution of timber sharply limited to northern and northeastern slopes, Iowa, late 1890s or early 1900s

Bluffs in driftless area showing characteristic distribution of timber sharply limited to northern and northeastern slopes, Iowa, late 1890s or early 1900s

Located in Twp. 100, R.V.section 15.
Mouth of cave at Devil's Den, Iowa, late 1890s or early 1900s

Mouth of cave at Devil's Den, Iowa, late 1890s or early 1900s

Located in Twp. 99 R. 5 Section 19 N. W. gr., N. E, 1/4, N. E. corner.
Small spring in Trenton Limestone, west of Devil's Den, Iowa, late 1890s or early 1900s

Small spring in Trenton Limestone, west of Devil's Den, Iowa, late 1890s or early 1900s

Mineral Creek valley cut in Oneota limestone, Iowa, late 1890s or early 1900s

Mineral Creek valley cut in Oneota limestone, Iowa, late 1890s or early 1900s

Located in Twp. 99, R. VI, Section 14.
Fine quality of quarry stone with evenly bedded limestone about 40 feet above the Saint Croix, Iowa, late 1890s or early 1900s

Fine quality of quarry stone with evenly bedded limestone about 40 feet above the Saint Croix, Iowa, late 1890s or early 1900s

Located in Twp. 100, R. V. Section 18, N. W. 1/4, N. E. corner.
Hill formed by circumdenudation with base of leveled plain composed of St. Croix overlain by Oneota limestone, Iowa, late 1890s or early 1900s

Hill formed by circumdenudation with base of leveled plain composed of St. Croix overlain by Oneota limestone, Iowa, late 1890s or early 1900s

Located in Twp. 100, R. V. Sec. 34, N. E. Gr.; south side of Oneota River.
Oneota Limestone near Upper Iowa or Oneota River, Iowa, late 1890s or early 1900s

Oneota Limestone near Upper Iowa or Oneota River, Iowa, late 1890s or early 1900s

Located in Twp. 99, VI, Section 21.
Willard Bacon's homestead below a Valley cut in St. Croix sandstone, Iowa, late 1890s or early 1900s

Willard Bacon's homestead below a Valley cut in St. Croix sandstone, Iowa, late 1890s or early 1900s

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