extended across the nose at an earlier date; therefore, this uplift is younger than 

 the sediments. The restored thickness contours are shown as dashed lines, which 

 represent the thicknesses of the limestone series before truncation. 



The relatives ages of the two uplifts shown in Figure 24-43 cannot be deter- 

 mined from the behavior of isopach contours representing the flanking sediment- 

 ary rocks. Therefore, a lithofacies map is compiled, as shown in Figure 24-44. 

 It can be seen that the facies trends conform to the general outline of the granite 

 area in the southwest corner, but are unaffected by the one in the northeast. 

 From the lithofacies it can be assumed that the uplift in the southwest predates 

 the sedimentary series and contributed clastic materials. The northeastern 

 uplift obviously is younger than the sediments. 



Figure 24-43. Isopach map used in construction of palinspastic map of Figure 24-45. 



503 



