TROPICAL GEOGRAPHY ›› 2013, Vol. 33 ›› Issue (5): 636-639.

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A Hypothesis to Explain the Origin and Formation of the Zhanjiang Bay

LI Chunchu   

  • Online:2013-10-02 Published:2013-10-02

Abstract: 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 occurr 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.

Key words: meteorite impact crater, eolian loess, rift valley, drowned valley, Zhanjiang Bay