 | Geological Survey of Pennsylvania, Pennsylvania. Geological Survey - Coal - 1877 - 430 pages
...Pittsburg coal bed down to within perhaps 50 feet of the Mahoning Sandstone ; from thence to the Serai Conglomerate the rocks are well known. The hiatus...grouped on page plate V, (figs. 11, 12, 13, 14, 15, 16,) the compiled section (fig. 10) appearing •on page plate III. This compiled section reads : Limestone... | |
 | J. Peter Lesley - Coal mines and mining - 1895 - 976 pages
...of the ЖсЛопгпд sandstone ; from thence to the Serai Conglomerate the rocks are well known. The developments between Berlin and Pine Hill church...strata may be easily followed throughout this distance. A compiled vertical section of these Barren Measures in the Berlin region, from the Mahoning sandstone... | |
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Sandstone ; from thence to the Serai Conglomerate the rocks are well known. The hiatus in the section does not amount to as much as 100 feet, for 500 feet of Barren Measures have been measured, and the group is here certainly not in excess, if at all,... 