Category:Old geological maps of Indiana

Media in category "Old geological maps of Indiana"

The following 2 files are in this category, out of 2 total.

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  98 of 'Catalogue ... arranged and compiled by E. Balfour ..., Officer in charge. Aqueous rocks, their mineral structure. Aqueous rocks, Palæontology. Madura, its rocks and minerals. Tinnevelly, its geology' (11045641914).jpg 5,485 × 4,348; 3.99 MB
  
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  Indiana-Ohio oil and gas fields.jpg 1,815 × 859; 417 KB