Science. 1970 Jun 5;168(3936):1210-4. doi: 10.1126/science.168.3936.1210.
A considerable portion of the abyssal floor of the western North Pacific was already receiving pelagic sediment in late Jurassic time. Carbonate sediments were later replaced by abyssal clays as the basin deepened and bottom waters became more aggressive. The resulting facies boundary, which can be recognized on seismic profiles, is broadly transgressive; it ranges in age from mid-Cretaceous in the western Pacific to Oligocene in the central Pacific. Cherts are encountered at and below the major facies boundary and appear to have been formed by postdepositional processes.
在晚侏罗世时期，西太平洋的海底大部分已经开始接受远洋沉积物。随着盆地的加深和底层水变得更加活跃，碳酸盐沉积物后来被深海黏土所取代。在地震剖面上可以识别出这个相的边界，它具有广泛的海侵特征；其年龄范围从中生代中期到新生代早期。燧石出现在主要相的边界及其以下，并似乎是由后生作用形成的。
