CAJ | 학술논문

对湛江港（湾）的成因提出如下假说：1）第四纪晚更新世时期，湛江地区可能发生过一次天体撞击地球的突变事件，撞击地点在麻斜海；2）从撞击坑中升起的大量尘烟被风向北吹送，在湛江港（湾）以北地区沉落下来，形成了面积颇广、厚约50 cm的风成黄土层；3）受此撞击事件影响，南三岛分裂成3个小岛，还诱发了周边的火山活动；4）湛江港（湾）上端伸入陆地的溺谷湾区域，出现“X”形裂痕，该裂痕在其后的低海面时期，遭受地表流水的侵蚀作用而加深、拓宽，再于冰后期海侵时成为溺谷湾。以上猜想，主要依据对以下3方面的现象及问题的观察与思考得出：一是湛江以北大面积、铺天盖地而来的风成黄土源于何处；二是麻斜海象是一个“坑”，坑中物质及其周边环境有一些异常；三是湛江溺谷湾发育的基础像一条裂谷。
대담강항（만）적성인제출여하가설：1）제사기만경신세시기，담강지구가능발생과일차천체당격지구적돌변사건，당격지점재마사해；2）종당격갱중승기적대량진연피풍향북취송，재담강항（만）이북지구침락하래，형성료면적파엄、후약50 cm적풍성황토층；3）수차당격사건영향，남삼도분렬성3개소도，환유발료주변적화산활동；4）담강항（만）상단신입륙지적닉곡만구역，출현“X”형렬흔，해렬흔재기후적저해면시기，조수지표류수적침식작용이가심、탁관，재우빙후기해침시성위닉곡만。이상시상，주요의거대이하3방면적현상급문제적관찰여사고득출：일시담강이북대면적、포천개지이래적풍성황토원우하처；이시마사해상시일개“갱”，갱중물질급기주변배경유일사이상；삼시담강닉곡만발육적기출상일조렬곡。
In this paper, a hypothesis about the origination and formation of the Zhanjiang bay is proposed on the basis of following arguments: 1) an event of meteorite impact might occur on Zhanjiang area during the late Pleistocene epoch, and today’s Maxie Sea would be the impact crater ;2) a large number of dust raised by the impact event flowed northward and deposited around the northern Zhanjiang, which formed a large area of eolian loess with about 50cm in thickness;3) as a consequence of the impact effect, the Nansan. Island was separated into three islands, causing a number of volcanic activity in the area around the impact crater;4) in the northern area of the Maxie impact crater, there was‘X’ crack, which was eroded deeper and wider during the lower sea level period after the impact event and then became a drowned valley during the post glacial period of Holocene. This hypothesis is derived from observation on the following three aspects: First, what did the materials of the large area of eolian loess come from? Second, the Maxie Sea likes an impact crater with some unusual signs both in the impact crater and its surroundings. And third, the drowned valley of the Zhanjiang Bay looks like a rift valley.