stratigraphical

The report of the excavations at this site was published later in 1976 (Shan-tung-sheng, Tung-hai-yü, and Jih-chao 1976); but prior to the availability of stratigraphical evidence, it seemed fully apparent that the pottery associated with the Jih-chao and Wei-fang areas—where we meet for the first time a high percentage of black wares turned on a fast wheel—represented a phase subsequent to that at Hsi-hsia-hou.

1983, Louisa G. Fitzgerald Huber, “The Relationship of the Painted Pottery and Lung-shan Cultures”, in David N. Keightley, editor, The Origins of Chinese Civilization, University of California Press, →ISBN, →LCCN, →OCLC, →OL, page 199