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关于珠江三角洲的具体范围,尤其是它的北界,不同的研究者由于划分的标准和掌握资料的不同而各持已见,莫衷一是。南海石碣海蚀遗迹的发现,为北界的讨论提供了新的依据。笔者基于珠江三角洲的西、北江部分为“断块型三角洲”的认识,提出近东西走向的罗浮山——瘦狗岭断裂为西、北江三角洲北界的可能性,该断裂的东段并可能构成东江三角洲的北缘。石碣遗迹的发现,有力地支持了这一认识,并为估算罗浮山断裂近期活动的幅度和速度,提供了定量的依据。
With regard to the specific scope of the Pearl River Delta, especially its northern boundary, different researchers hold different views due to the differences in the standards of division and the materials they hold. The discovery of the remains of sea scallops in the South China Sea provided a new basis for discussions in the northern boundary. Based on the recognition of the “fault-block delta” in the western and northern part of the Pearl River Delta, the author proposes that the near-east-west strike of the Luofu Mountain-Shougouling fault may be the north boundary of the west and the Beijiang Delta. The eastern segment of the fault may be Constitute the northern edge of the Dongjiang Delta. The discovery of the stone veins remains strongly supports this understanding and provides a quantitative basis for estimating the magnitude and speed of the recent activities of the Luofushan fault.