44 THE CAMBRIAX AND ORDOVICIAN DEPOSITS OF MARYLAND 



EATON, H. N. The geology of South Mountain at the junction of 

 Berks, Lebanon, and Lancaster counties, Pennsylvania. 



Jour. Geology, vol. xx, No. 4, pp. 331-343, 2 figs., May-June, 1912. 

 Describes the occurrence, character and relation of pre-Cambrian, Cambrian, Ordo- 

 vician and Triassic strata and the structural conditions. 



JANDORF, MORTON LEHMAYER. Preliminary report on the York Valley 

 limestone belt in York County. 



Pennsylvania Topog. and Geol. Survey, Kept. 1910-1912, pp. 50-129, 14 pis. 

 (incl. maps), 1912. 



MOORE, ELWOOD S. Siliceous oolites and other concretionary structures 

 in the vicinity of State College, Pennsylvania. 



Jour. Geology, vol. xx, No. 3, pp. 259-269, 7 figs., April-May, 1912: Abstract, 

 British Assoc. Adv. Sci., Kept. 81st Meeting, p. 390, 1912. 



Describes the occurrence and geologic relations and discusses the origin of siliceous 

 oolites. 



STOSE, GEORGE W., and SWARTZ, CHARLES K. Description of the 

 Pawpaw and Hancock quadrangles (Maryland-West Virginia-Pennsyl- 

 vania). 



U. S. Geol. Survey, Geol. Atlas U. S. Pawpaw-Hancock folio (No. 179), 24 pp., 

 11 figs., 9 pis. (maps, sections, and illustrations), 1912; field edition, 176 pp., 

 11 figs., 20 pis., 6 folded maps (in pocket), 1912. 



Abstract, Washington Acad. Sci. Jour., vol. ii, No. 16, p. 410, October 4, 1912. 



Describes the topography, the character, occurrence, and relations of Cambrian, 

 Ordovician, Silurian, Devonian, and Carboniferous formations, and of Tertiary, and 

 Quaternary deposits, the geologic structure, the geologic history, and the mineral 

 resources. 



WILLIS, BAILEY. Index to the stratigraphy of Xorth America. 



U. S. Geological Survey, Prof. Paper, 71, 894 pp., 1 pi. (geological map in 4 

 sheets in separate case). 



Brief notes on Maryland stratigraphy are given in the compilation of data used 

 in the preparation of the geologic map of North America. 



1913 



BROWN, THOMAS C. Notes on the origin of certain Paleozoic sedi- 

 ments, illustrated by the Cambrian and Ordovician rocks of Center 

 County, Pennsylvania. 



Jour. Geology, vol. xxi, No. 3, pp. 232-250, 7 figs., 1913; (Abst.), Geol. Soc. 

 America, Bull. vol. xxiv, No. 1, p. 112, March 24, 1913. 



Discusses the origin of conglomerates, oolites, and sandstones of Ordovician and 

 Cambrian age. 



