. Central Connecticut in the geologic past. el, andobscuring the fact that in earlier periods this too was a part ofthe mountain system. These movements corresponded to a warp-ing or tilting about a horizontal hinge-line or axis which followedin a general way the line of the present great Atlantic seaboardcities, Boston, New York, Philadelphia, Baltimore, Washington,and Richmond. Northwest of this line the uplift increased withdistance from the hinge-line. On the southeast, subsidence in-creased wifch the distance. Erosion was reawakened in the up-lifted region and numerous rivers carried the
. Central Connecticut in the geologic past. el, andobscuring the fact that in earlier periods this too was a part ofthe mountain system. These movements corresponded to a warp-ing or tilting about a horizontal hinge-line or axis which followedin a general way the line of the present great Atlantic seaboardcities, Boston, New York, Philadelphia, Baltimore, Washington,and Richmond. Northwest of this line the uplift increased withdistance from the hinge-line. On the southeast, subsidence in-creased wifch the distance. Erosion was reawakened in the up-lifted region and numerous rivers carried the land waste south-eastward to that region which was sinking. The rivers herecould no longer erode but began to build by depositing theirsediment. For a time this was more than enough in volume tocompensate for the subsidence, so the sea waters were kept backand a delta plain was built out along the entire Atlantic fresh-water deposits of what is known as the Potomac for-mation were thus laid down in unconformable relation upon the. 0. ~*Scale in miles,horizontal and vertical. 10. STRUCTURE SECTIONS of CENTRAL CONNECTICUT
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgeology, bookyear1915
