3D Coherency of the Barbados Seismic Data Volume: Improved Imaging of Faults and Fluid Conduits

9618166摩尔流体-岩石相互作用和相关的构造-水文过程对地壳演化起着基本的控制作用。吸积棱柱在高应变率下结合了富含流体的沉积物，提供了天然实验室，可在其中进行构造和水文过程的钻探、高质量地震成像和监测。这里对构造和水文过程的评价为活动构造带和较为平静的沉积盆地中的深层次现象提供了模型。断层是巴巴多斯北部增积棱柱的显著流体运移通道。沿断层迁移的流体来源很深，改变了它们接触的沉积物，并调解了构造过程。最近在该地区收集的三维地震数据体清楚地显示了板块边界、滑脱或滑脱断层及相关的逆冲展布。作为之前关于巴巴多斯3D地震体工作的后续工作，我们建议将地震相干分析应用于数据，这是一种革命性的叠后处理技术。我们建议研究滑脱表面的相干特征、沿该表面的反射极性之间的边界以及类似反射极性区域内的任何相干反常。这些分析将在俄克拉荷马州塔尔萨的Amocoos技术中心进行，这种加工技术就是在那里开发的。***

9618166 Moore Fluid-rock interactions and associated tectonic- hydrologic processes exert fundamental controls on crustal evolution. Accretionary prisms incorporate fluid-rich sediments at high strain rates, providing natural laboratories where tectonic and hydrologic processes are accessible to drilling, quality seismic imaging and monitoring. Evaluation of tectonic and hydrologic processes here provides models for deeper level phenomena in both active tectonic belts and more quiescent sedimentary basins. Faults are conspicuous fluid migration conduits of the northern Barbados accretionary prism. Fluids migrating along faults are deeply sourced, alter sediments that they contact, and mediate structural processes. A recently collected 3D seismic data volume in this area clearly images the plate boundary detachment or decollement fault and related thrust splays. As a follow-on effort to previous work on this Barbados 3D seismic volume, we propose application of seismic coherency analysis to the data, a revolutionary post-stack processing technique. We propose to investigate the coherency signature of the decollement surface, the boundaries between reflection polarities along this surface and any coherency anomalies within areas of like reflection polarity. These analyses will be carried out at AmocoOs Technology Center in Tulsa Oklahoma, where this processing technique was developed. ***