塔里木盆地下石炭统巴楚组米级碳酸盐旋回

基金项目: 国家“九五”重点科技攻关项目(96-111-01-05-03)

METER-SCALE CARBONATE CYCLES IN THE BACHU FORMATION OF THE LOWER CARBONIFEROUS IN THE TARIM BASIN

摘要: 塔里木盆地下石炭统巴楚组生屑灰岩段发育两类米级碳酸盐旋回,即潮间-潮上旋回和潮下-潮上旋回。根据沉积学特征及Fischer图解分析,这些米级旋回形成在三级层序的高位体系域,受米兰柯维奇轨道参数诱导的高频海平面变化所控制。发育针孔状溶孔的云灰岩储层与高频海平面变化所引起的碳酸盐台地的短期暴露有关。
- 高频海平面变化 /
- Fischer图解 /
- 米级碳酸盐旋回 /
- 生屑灰岩段
Abstract: Two kinds of meter-scale carbonate cycles are developed in the Bioclastic Limectone Member of the Bachu Formation in the Lower Carboniferous of the Tarim Basin,i.e. the intertidal-supratidal cycle and the subtidal-supratidal cycle.According to the characteristics of sedimentology and the analysis of the Fischer Plot, the cycles are formed in the upland system domain of the 3^rd order sequence and controlled by Milankovitch-induced high-frequency sea-level fluctuation. The dolomitic limestone reservoirs developed with needlehole-like solution openings may be related to the short-term exposure of carbonate platforms caused by the high-frequency sea-level fluctuation.
- high-frequency sea-level fluctuation /
- the Fischer Plot /
- meter-scale carbonate cycles /
- the Bioclastic Limestone Member

[1]	Read J F,Goldhammer R K.Use of Fischer plots to define 3^rd order sea level curves in peritidal cycles carbonate, Early Ordovician, Applachians[J]. Geology, 1988, 16:895～899.
[2]	Bechstadt T,Schweizer T.The carbonate-clastic cycles of the East-Alpine Raibl Group:result of third-order sea-level fluctuations in the Carnian[J].Sedimentary Geology,1991,70:241～270.
[3]	Arthur M A,Dean W E,Bottjer D,et al.Rhythmic bedding in Mesozoic-Cenozoic pelagic carbonate sequence:the primary and diagenetic origin of Milankovitch-like cycles[A]. Berger,et al.Milankovitch and Climate, part 1[C].Dordrecht:D Reidel Publ Comp.191～222.
[4]	Goldhammer R K,Dunn P A,Hardie L A. High-frequency glacio-eustatic oscillattion with Milankovitch characteristics recorded in northern Italy[J]. American Journal of Science, 1987, 287:853～892.
[5]	Goldhammer R K,Dunn P A,Hardie L A. Depositional cycles, composite sea-level change, cycle stacking patterns, and the hierarchy of stratigraphic forcing: examples from Alpine Triassic platform carbonates[J]. Geological Society of American Bulletin, 1990, 102:535～562.
[6]	Osleger D,Read J F. Relation of eustasy to stacking patterns of meter-scale carbonate cycles, Late Cambrian, USA[J]. Journal of Sedimentary Petrology, 1991, 61:1225～1252.
[7]	郭建华,翟永红,刘生国. 塔中地区石炭系高水位期“生屑灰岩”[J]. 石油勘探与开发, 1996,23:27～31.