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Research about Pennsylvania

Source-linked reports with geographic coverage including Pennsylvania.

At least 793 records · Page 44Linked to original sources
USGS1925

The resuscitation of the term Bryn Mawr gravel

In the course of geologic and physiographic work in eastern Pennsylvania, it has seemed to the writer that the time was ripe for the restriction of the term Brandywine formation, now including presumably both Pliocene and Pleistocene gravels, and the reinstatement of the old term Bryn Mawr gravel for a portion of the divided Brandywine. A brief history of the nomenclature and usage involved will show the grounds for the choice of terms.

Pennsylvania↗
USGS1917

The Helderberg limestone of central Pennsylvania

This paper presents the results of a study made during 1913, 1914, and 1915, while the writer was a student at Johns Hopkins University. The formations discussed have been studies in Maryland, New Jersey, and New York, and described with more or less detail, but concerning their occurrence in the intervening area in Pennsylvania little exact information has been available. The conflict in opinion as to the proper position and correlation of the Keyser limestone and as to the interpretation of some of the standard New York sections has made further data very desirable, and the present paper is an attempt to meet a part of the deficiency.

Pennsylvania↗
USGS1917

Relation of the Wissahickon mica gneiss to the Shenandoah limestone and Octoraro schist of the Doe Run and Avondale region, Chester County, Pennsylvania

The region discussed in this paper lies in Chester County, Pa., and is included in the eastern half of the Coatesville quadrangle. (See fig. 3.) It is within the belt of crystal-line schists and gneisses of the Piedmont Plateau. The northern half of the area, which will be called the Doe Run region, from the village of that name (see Fig. 4, p. 15), has been surveyed by Eleanora F. Bliss in connection with the problem of the relation of the Wissahickon mica gneiss to the Octoraro schist.

Pennsylvania↗
USGS1910

Johnstown folio, Pennsylvania

By reference to the key map (fig. 1) it will be seen that the Johnstown quadrangle is in southwest-central Pennsylvania. It lies mostly in Cambria County but covers also small parts of Somerset, Westrmoreland, and Indiana counties. Most of it is included in the valley of Conemaugh River and its tributaries Little Conemaugh River and Stony Creek, at the confluence of which is Johnstown and its suburbs. The northern part of the area is in the valleys of Blacklick Creek and it South Branch, along which are the small but prosperous coal-mining town Nanty Glo, Twin Rocks, Weber, Vintondale, and Wehrum.

Pennsylvania↗
USGS1909

Mercersburg-Chambersburg folio, Pennsylvania

The Mercersburg and Chambersburg Qquadrangles are located in the south-central part of Pennsylvania, between parallels 39° 45' and 40° and meridians 77° 30' and 78°, and contain about 458 square miles. This area embraces the larger part of Fanklin County and a small part of Fulton County. Its southern border is within 2 miles of the Maryland State boundary.

Pennsylvania↗