626 



STOSE AND LEWIS TEIASSIC IGNEOUS ROCKS 



A large cross-cutting body near the south end of the Gettysburg sill, 

 about 1 mile thick, cuts the strata at right angles and extends north- 

 westward nearly to the western edge of the Triassic basin. From this 

 cross-cutting body several sills are sent out. One forms the loop of in- 



TRIASSIC IGNEOUS ROCKS 



(intrusive diaba 



Figure 1. — Geologic Map of the Vicinity of Gettysburg, Pennsylvania 



Includes the Fairfield, Gettysburg, and Carlisle quadrangles and portions of adjacent 

 areas. The fine lines in the area of Triassic sediments represent distinct sedimentary 

 layers that have been traced. 



trusive diabase north of Emmitsburg — a sheet folded into a basin shape 

 (see section D-D'). It is, however, cross-cutting in part, as shown by 

 the truncation of the stratification lines on the map. On the northeast 



