FAULTING AND TEXTURE CHANGES IN CHALK - AN EXAMPLE IN A GRABEN OF THE MONS BASIN (BELGIUM)

被引:0
|
作者
GAVIGLIO, P
DALBISSIN, MC
BERGERAT, F
VANDYCKE, S
机构
[1] UNIV PARIS 06, TECTON QUANTITAT LAB, CNRS, URA 1315, F-75252 PARIS 05, FRANCE
[2] FAC POLYTECH MONS, GEOL FONDAMENTALE & APPL LAB, FNRS, B-7000 MONS, BELGIUM
来源
关键词
FAULTS; EXTENSION TECTONICS; CHALK; POROSITY; COMPACTION; PRESSURE-SOLUTION AND CEMENTATION; THERMAL DILATATION; MONS BASIN;
D O I
暂无
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Changes in texture of chalk are in close relationship with normal fault slips : porosity loss and decrease in pore size under compaction and pressure-solution and cementation. Fluids play a major part in the rearrangement of grains or in removal and deposition of calcite. The described deformation stage, reached under low tectonic stresses, followed a dilatant state characterized by increased porosity, pore size and permeability. At this stage pressure-solution was already a significant process of deformation.
引用
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页码:565 / 575
页数:11
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