PAN style="COLOR: black; FONT-SIZE: 14pt; mso-font-kerning: 0pt; mso-bidi-font-weight: bold" lang=EN-US>Depositional Environment of the Tongziyan Formation of Dinfengshan Coal Mine in Longyong coalfield, Fujian Province and Its Evolutionary Characteristics

• 责任者：Wu Fumei (Department of Engineering ; Longyan College ; Longyan 364012 ; China) ; Huang Wenhui
• 刊名：Chinese Journal of Geology
• 出版年：2010
• 卷期：45(1)
• 关键词：沉积相 ; sedimentary facies ; 福建 ; Fujian Province
• 页码：p.324-332
• 图表：3 illus., 15 refs.
• 分类号：0803
• issnNo：ISSN0563-5020
• isbnNo：CN11-1937/P

PAN style="COLOR: black; FONT-SIZE: 14pt; mso-font-kerning: 0pt" lang=EN-US>By using different kinds of data from sedimentology，biatomic and sequence stratigraphy and coal geology，sedimentary characteristics of the Tongziyan Formation and its evolutionary history are studied. The result indicated that the Tongziyan Formation is deposited in a marine-shore environment. Its sedimentary sequence can be divided into three cycles，while each cycle starts with a rapid ingression and ends in a slow regression process due to a series of secondary fast transgression or regression events. Under the internatively influence of tidal and fluvial systems，the peat formation environments of Tongziyan Formation fluctuated constantly from fluvial to tidal flat. The sedimentary facies of the Tongziyan Formation include sea shore，island-lagoon，peat，tidal flat，tide or river controlled delta，which constitute a complex delta deposition system.