175 KOROKII, A. M. 1985. "Quaternary Sea-Level Fluctuations on the North 

 Western Shelf of the Japan Sea," Journal of Coastal Research . Vol 1, No. 13, 

 pp 293-298. 



Paleogeographic reconstructions for the northwestern margin of the Japan 

 Sea suggest that the 2 to 4-m fall of sea-level below present datum coincides 

 with cold transitions between the Atlantic-Subboreal and Subboreal/Subatlantic 

 episodes. Quaternary oscillations of the Japan Sea, which were 

 glacio-eustatic in nature, resulted in the formation of lower marine and 

 lagoonal terraces that were separated from one another by well-defined ero- 

 sional features. Late Pleistocene - Holocene transgressions had greater im- 

 pact on the geomorphic and sedimentary framework than did tectonic processes 

 which occurred throughout these glacio-eustatic oscillations. The lack of 

 marine terraces above the highest levels of the Quaternary transgressions (8 

 to 10 m above MSL) indicates a relatively stable or slowly subsiding north- 

 western shelf of the Japan Sea during the Pleistocene. Geological, geo- 

 physical, geomorphological , and absolute dating of marine deposits permitted 

 division of a well-known marine bench previously believed to have resulted 

 from the Riss-Wurm (Kazantsevo) transgression. This nearly equidimensional 

 bench level is now recognized as two separate terraces, each corresponding to 

 a Riss-Wurm transgression. (Author). 



177 KRAFT, J. C. 1986. "Holocene Epoch Coastal Geomorphologies Based on 

 Local Relative Sea-Level Data and Stratigraphic Interpretations of Paralic 

 Sediments," Journal of Coastal Research . Special Issue No. 1, pp 53-59. 



The paralic sediments of Delaware's Atlantic coast and estuary include a 

 continuous depositional record of Holocene sediments from 11,000 years before 

 present (BP) . These sediments were deposited in landward migrating environ- 

 ments of the Holocene marine transgression superimposed and eroding into a 

 trellis-like topography of the ancestral Delaware River (circa 15,000). Tidal 

 waters fringed with salt marsh sediments first intruded into the inner shelf 

 area 12,000 to 14,000 BP. As sea- level rose, the tributary valleys were 

 inundated by tidal waters beginning 10,000 to 11,000 BP at 30 m below sea- 

 level. These tidal marshes extended along the ancestral drainage system up to 

 200 kilometers inland from the projected early Holocene Atlantic shoreline. 



By 7,000 BP, a lagoon-barrier coastal system had developed on the adja- 

 cent Atlantic coastal inner shelf area. This system has migrated landward by 

 shoreface erosion and upward by rise in relative sea-level to its present 

 coastal position. In the lagoon, barrier, and estuarine marsh areas one can 

 drill through and study stratigraphic sequences comprised of sediments 

 deposited landward of and including the barrier island and barrier spit 

 system. From this stratigraphic record, one can determine the orderly and 

 systematic transgression landward of the coastal sedimentary environments. 

 Their sedimentary lithosomes may be observed in stratigraphic continuity from 

 present depositional areas into the subsurface under the coastal barriers and 

 along the estuarine shoreline. Large numbers of radiocarbon dates were used 

 to determine the time of depositional and relative stratigraphic positions of 

 the coastal lithosomes. Basal salt marsh peats were used to establish a local 

 relative sea- level curve. The question remains as to whether or not sea-level 

 rose to its present position in a smooth, continuous but ever decreasing rate 



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