• 责任者：Pang Weihua (Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Ding Xiaozhong
• 刊名：Geology in China
• 出版年：2011
• 卷期：38(3)
• 关键词：早寒武世 ; Lower Cambrian ; 层序地层学 ; sequence stratigraphy ; 古环境 ; paleoenvironment ; 湖南 ; Hunan Province
• 页码：p.560-576
• 图表：9 illus., 3 tables, 49 refs.
• 分类号：1200
• issnNo：ISSN1000-3657
• isbnNo：CN11-1167/P

Lower Cambrian strata are well developed in Hunan Province. With the main sedimentary formations of black shale and carbonates in western and central Hunan Province and a suite of greywacke and carbonaceous slate with different thicknesses of rhythmic layers in southern area, the Lower Cambrian in the study area constitutes a second-order sequence, which can be further divided into six third-order sequences, corresponding to six orderly transgression-regression cycles. Impacted by palaeosedimentary environment, the depositional system tracts of the third-order sequences are formed by the vertical sequences of "CS + HST" and "TST (transgression system tract) + CS + HST", with the major sequence boundaries being II type sequence boundary and the drowning-type sequence boundary. The sequence-stratigraphic framework records the complex palaeoenvironment evolution of passive margin in the Early Cambrian in Hunan Province and also reflects the restriction of the metallogenesis from palaeoenvironment evolution.