The stratigraphy of the late Holocene shallow subsurface coastal sediments, North Al-Wajh, Saudi Arabia was investigated to reconstruct the environmental evolution of the area in relation to sea-level changes. Five shallow cores (1.1 to 2.2 m long) were collected from the intertidal flat bordering the Dumaygh Lagoon, and the mouths of wadis Antar and Haramil. The cores exhibit siliciclastic-dominated sediments, in some parts containing reworked calcareous shell fragments of bivalves, gastropods and coral remains. The sediments were analyzed for grain size, loss on ignition (LOI), CaCO₃ content, and bulk mineralogy. Mineralogically, the sediments were dominated by siliciclastic minerals (quartz, plagioclase, feldspars, and hornblende) followed by low Mg-calcite (LMC), high Mg-calcite (HMC) and aragonite. In addition, traces of mica, amphiboles, clay minerals, and dolomite were recognized. There is a slight lateral variation in the relative abundance of aragonite and high Mg calcite (HMC), particularly at the base of cores. The results provide a simple scenario for the late Holocene Northern Red Sea coastal evolution. Two vertically stacked sedimentary facies were recognized from the cores; grey mud-dominated lagoonal/bayfill at the base and yellowish-brown sand-dominated intertidal flat at the top. The vertical facies stacking suggests a forestepping pattern or progradational sequence possibly attributed to the late Holocene relative sea-level fall.

研究了沙特阿拉伯北部Al-Wajh全新世晚期浅层地下沿海沉积物的地层学，以重建该地区与海平面变化有关的环境演变。从与Dumaygh泻湖接壤的潮间带以及wadis Antar和Haramil的口中收集了五个浅层岩心（长1.1至2.2 m）。岩心表现出以硅质碎屑为主的沉积物，某些部分含有重做的双壳类钙质贝壳碎片，腹足动物和珊瑚残骸。分析沉积物的晶粒尺寸，灼烧损失（LOI），CaCO ₃含量和整体矿物学。在矿物学上，沉积物以硅质碎屑矿物（石英，斜长石，长石和角闪石）为主，其次是低镁方解石（LMC），高镁方解石（HMC）和文石。此外，还发现了云母，闪石，粘土矿物和白云石的痕迹。文石和高镁方解石（HMC）的相对丰度略有横向变化，尤其是在岩心底部。结果为全新世北部红海晚期海岸演化提供了简单的方案。从岩心识别出两个垂直堆积的沉积相。底部为灰色泥浆为主的泻湖/海湾，顶部为黄褐色砂土为主的潮间带。