Influence of basement faults on the development of salt structures in the Danish Basin

摘要: Scaled centrifuged models based on interpreted seismic profiles were used to simulate the salt structures in Danish Basin. The consisted of a viscous layer simulating rock salt, overlain by layers cohesive sand that mimic brittle failure natural overburdens. Model results support hypothesis basement faults trigger growth many diapirs In plan view, model are localized as buoyant walls along overburden which collapsed due fault movement. With further burial, single rose from these walls. Some surfaced through faulted overburden, few trapped beneath competent ‘Cretaceous’ units and others starved lack supply below. section, asymmetric rooted tip or located rotated footwall blocks. not over triggered differential loading collapsing block rotation. Models show presence fewer northern than southern part basin is subsidence flow material north south, where they rise diapirically. model, pressure changed 1.3 × 102 Pa south 2.3 basin. general, illustrate influence accumulating half-grabens introducing slope steps at base layer, weakening its causing compaction. spreading overhangs Cretaceous chalk Basin would seal any potential pre-Cretaceous reservoir rocks.