渤海湾盆地东部中新世馆陶组古植物群及其古气候分析

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Abstract The characteristics of sporopollen assemblage and climate evolution of Guantao Formation in eastern Bohai Bay area are obtained through drawing of the sporopollen spectrum and statistic analysis of sporopollen data, which are shown as follows. The evolution of tree layer is divided into two stages:coniferous tree-dominated mixed forest in the early Guantao Formation (with sporopollen assemblage zone III and IV), and deciduous forest containing many subtropical elements in the late Guantao Formation (with sporopollen assemblage zone I and II). It is found from the statistics that the hygrophyte are significantly more than the xerophyte, and the philotherm more than the thermophile, with a typical subtropical monsoon climate characteristics. The S/A and E-T parameters are calculated by selected typical sporopollen to describe the climate changes between sample spots in detail, which proves that the climate of Guantao Formation fluctuated frequently and was mainly hot and humid.

Key words： Guantao Formation sporopollen assemblage paleoclimate paleoecology Bohai Bay Basin

Received: 12 March 2019

PACS:	Q911.5
	Q914
	P532

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	WANG Shu
	YIN Tai-ju

Cite this article:

WANG Shu,YIN Tai-ju. PALEOFLORA AND PALEOCLIMATE ANALYSIS OF THE MIOCENE GUANTAO FORMATION IN EASTERN BOHAI BAY BASIN[J]. GEOLOGY AND RESOURCES, 2019, 28(6): 503-511,552.

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http://manu25.magtech.com.cn/Jweb_dzyzy/EN/ OR http://manu25.magtech.com.cn/Jweb_dzyzy/EN/Y2019/V28/I6/503

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