The Gabbros and Associated Hornblende Rocks Occurring in the Neighborhood of Baltimore, Maryland (open access)

The Gabbros and Associated Hornblende Rocks Occurring in the Neighborhood of Baltimore, Maryland

From introduction: The present paper is intended as a contribution to our knowledge of a particular phase of metamorphism in eruptive rocks, i.e., that one which is dependent on the secondary development of hornblende by the paramorphism or pseudomorphism of pyroxene.
Date: 1886
Creator: Williams, George Huntington
System: The UNT Digital Library
The Lignites of the Great Sioux Reservation : a Report on the Region Between the Grand and Moreau Rivers Dakota (open access)

The Lignites of the Great Sioux Reservation : a Report on the Region Between the Grand and Moreau Rivers Dakota

From introductory: Report of the survey party on the Great Sioux Reservation for determining any coal-beds of economic value.
Date: 1885
Creator: Willis, Bailey
System: The UNT Digital Library
On the Fossil Faunas of the Upper Devonian: the Genesee Section, New York (open access)

On the Fossil Faunas of the Upper Devonian: the Genesee Section, New York

From letter of transmittal: The present report includes special discussion of the faunas of the Hamilton group and of those below the black shales of the Genesee group is omitted.
Date: 1887
Creator: Williams, Henry Shaler
System: The UNT Digital Library
Tertiary and Cretaceous Strata of the Tuscaloosa, Tombigbee, and Alabama Rivers (open access)

Tertiary and Cretaceous Strata of the Tuscaloosa, Tombigbee, and Alabama Rivers

From preface: This bulletin is based upon the observations of the Tertiary and Cretaceous strata exposed along the Tuscaloosa, Tombigbee, and Alabama Rivers in the state of Alabama.
Date: 1887
Creator: Smith, Eugene Allen & Johnson, Lawrence C.
System: The UNT Digital Library