当前位置: X-MOL 学术Geofluids › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
The Relationship between Fluid Flow, Structures, and Depositional Architecture in Sedimentary Rocks: An Example-Based Overview
Geofluids ( IF 1.7 ) Pub Date : 2020-07-14 , DOI: 10.1155/2020/3506743
Vilde Dimmen 1 , Atle Rotevatn 1 , Casey W. Nixon 1
Affiliation  

Fluid flow in the subsurface is fundamental in a variety of geological processes including volcanism, metamorphism, and mineral dissolution and precipitation. It is also of economic and societal significance given its relevance, for example, within groundwater and contaminant transport, hydrocarbon migration, and precipitation of ore-forming minerals. In this example-based overview, we use the distribution of iron oxide precipitates as a proxy for palaeofluid flow to investigate the relationship between fluid flow, geological structures, and depositional architecture in sedimentary rocks. We analyse and discuss a number of outcrop examples from sandstones and carbonate rocks in New Zealand, Malta, and Utah (USA), showing controls on fluid flow ranging from simple geological heterogeneities to more complex networks of structures. Based on our observations and review of a wide range of the published literature, we conclude that flow within structures and networks is primarily controlled by structure type (e.g., joint and deformation band), geometry (e.g., length and orientation), connectivity (i.e., number of connections in a network), kinematics (e.g., dilation and compaction), and interactions (e.g., relays and intersections) within the network. Additionally, host rock properties and depositional architecture represent important controls on flow and may interfere to create hybrid networks, which are networks of combined structural and stratal conduits for flow.

中文翻译:

沉积岩中流体流动、结构和沉积结构之间的关系:基于实例的概述

地下流体流动是各种地质过程的基础,包括火山作用、变质作用以及矿物溶解和沉淀。鉴于其相关性,例如在地下水和污染物运输、碳氢化合物迁移和成矿矿物沉淀中,它也具有经济和社会意义。在这个基于示例的概述中,我们使用氧化铁沉淀物的分布作为古流体流动的代表来研究沉积岩中流体流动、地质结构和沉积结构之间的关系。我们分析和讨论了来自新西兰、马耳他和犹他州(美国)的砂岩和碳酸盐岩的一些露头实例,显示了对流体流动的控制,从简单的地质异质性到更复杂的结构网络。根据我们对大量已发表文献的观察和回顾,我们得出结论,结构和网络内的流动主要受结构类型(例如,接头和变形带)、几何形状(例如,长度和方向)、连通性(即,网络中的连接数),运动学(例如,膨胀和压缩),以及网络内的交互(例如,中继和交叉)。此外,主岩性质和沉积结构代表了对流动的重要控制,并且可能会干扰创建混合网络,这些网络是用于流动的组合结构和地层管道的网络。长度和方向)、连通性(即网络中的连接数)、运动学(例如膨胀和压缩)以及网络内的相互作用(例如中继和交叉)。此外,主岩性质和沉积结构代表了对流动的重要控制,并且可能会干扰创建混合网络,这些网络是用于流动的组合结构和地层管道的网络。长度和方向)、连通性(即网络中的连接数)、运动学(例如膨胀和压缩)以及网络内的相互作用(例如中继和交叉)。此外,主岩性质和沉积结构代表了对流动的重要控制,并且可能会干扰创建混合网络,这些网络是用于流动的组合结构和地层管道的网络。
更新日期:2020-07-14
down
wechat
bug