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The AAPG/Datapages Combined Publications Database

Journal of Sedimentary Research (SEPM)

Abstract



Journal of Sedimentary Research, Section B: Stratigraphy and Global Studies
Vol. 67 (1997)No. 2. (March), Pages 341-349

Development of Stratigraphy and Sediment Distribution in the Northeastern Yellow Sea During Holocene Sea-level Rise

Hee Jun Lee (1), Suk Hoon Yoon (2)

ABSTRACT

A succession of Holocene deposits in the northeastern Yellow Sea were interpreted in a sequence-stratigraphic context, and sedimentology of each deposit was characterized, based on analyses of high-resolution seismic profiles and sediment cores taken along a transect. Thin (^sim 3 m) transgressive sediments that accumulated through shoreface erosion during the rapid sea-level rise in the early Holocene overlie a subaerially eroded, low-gradient, late Pleistocene platform on the present-day inner shelf region. Cores reveal marine sands over tidal/estuarine sandy muds with an intervening, rather indistinct ravinement surface. In the deepest shelf area, these early Holocene tidal/estuarine deposits remain exposed at the seabottom. In the mid o late Holocene, two contrasting deposits of the highstand type (deltaic clayey mud and tidal sand ridges) began to accumulate in response to slower rates of sea-level rise. A series of tidal sand ridges in the nearshore area migrated offshore over the transgressive sand sheet, and a deltaic watery mud prograded discordantly over consolidated tidal/estuarine deposits in the central shelf. The transgressive facies relationships present a model for macrotidal, epicontinental-sea settings subject to low wave energy and reduced sediment supply.

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