The alternating submergence and subaerial exposure of the low-gradient, shallow Sunda Shelf of southeast Asia during Quaternary interglacial-glacial cycles played an important role in ocean circulation and monsoonal climate through the interchange of Indian Ocean and Pacific Ocean waters. The Quaternary stratigraphic development of this margin is, however, poorly understood. This study uses a multi-proxy approach (AMS radiocarbon, bulk sediment magnetic susceptibility, X-ray fluorescence spectrometry, and foraminiferal assemblage data) to characterize environmental change and late Pleistocene to Holocene sequence stratigraphic architecture in 16 cores from the northern Sunda Shelf off the east coast of Peninsular Malaysia.

Five chronostratigraphic units are recognized. Unit 1 is an inner shelf deposit dating from a late Pleistocene sea-level highstand (the highstand systems tract of the pre-LGM base-level cycle). Units 2–4 represent different paleoenvironmenal components of the transgressive systems tract (TST) of the most recent base-level cycle. Unit 2 is a late Pleistocene shallow open embayment deposit that formed during the post-LGM inundation of the paleo-Chao Phraya River valley as sea level rose. Unit 3 is composed of late Pleistocene to early Holocene paralic peat and organic-rich mud and is capped by a transgressive ravinement surface. Unit 4 is a shallow shelf unit deposited during the early Holocene transgression on the Sunda Shelf prior to ca. 6500 cal yr BP (the onset of the regional Holocene sea-level highstand). Unit 5 represents the mid-Holocene to recent highstand systems tract (HST) deposited from ca. 6500 cal yr BP to present.

The incised paleovalleys of the paleo-Chao Phraya River and its tributaries provide more accommodation space for sediment accumulation than the surrounding shelf. However, the thinness of the Holocene sedimentary record, 2–3 m in the incised valleys compared to <1 m over the adjacent shelf, indicates that the LGM incised valleys were almost filled by fluvial and coastal plain sediments before open marine conditions returned near the beginning of the Holocene. The multi-proxy approach of this study elucidates the geologic response of this shelf to sea-level rise and the sequence stratigraphic development of tropical, siliciclastic-dominated shallow shelf depositional sequences.

第四纪冰川间冰期循环期间，东南亚低梯度浅层Sun田架的交替淹没和空中暴露通过印度洋和太平洋水域的交换在海洋环流和季风气候中发挥了重要作用。然而，对这一边缘的第四纪地层发展了解甚少。这项研究使用多代理方法（AMS放射性碳，大体积沉积物磁化率，X射线荧光光谱法和有孔虫组合数据）来表征环境变化以及北Sun达架北缘16个岩心的晚更新世至全新世层序地层构造。马来西亚半岛东海岸。

识别出五个年代地层单位。第1单元是一个内陆架沉积物，其历史可追溯到晚更新世的海平面高位（LGM之前基水位周期的高位系统域）。2-4单元代表了最新基础级循环的海侵系统域（TST）的不同古环境成分。2号单元是晚更新世浅层开放式沉积物沉积物，形成于LGM后泛滥的古湄南河河谷随海平面上升而形成。第3单元由更新世晚期到全新世早期的泥炭和富含有机物的泥浆组成，并由海侵的沟谷覆盖。单元4是在新世早期海侵之前大约在圣达架上沉积的浅层架单元。BP 6500 cal yr（区域全新世海平面高位的开始）。单元5代表了大约从沉积的全新世中期到最近的高位系统域（HST）。6500 cal yr BP至今。

古湄南河及其支流的切开的古河谷比周围的架子为沉积物的堆积提供了更多的容纳空间。但是，全新世沉积记录的厚度较薄，在切谷中为2–3 m，而在相邻架子上为<1 m，这表明LGM切谷几乎在河床附近开放海况返回之前被河流和沿海平原沉积物填充。全新世的开始。这项研究的多代理方法阐明了该陆架对海平面上升的地质响应以及热带，硅质碎屑为主的浅陆架沉积层序的地层发育。