The emplacement of lava flows into poorly consolidated sediments during volcanism can lead to a wide range of lava-sediment interaction processes. Understanding these processes and their products is critical for appraising reservoir quality and connectivity in both intra- and sub-volcanic prospectivity settings. This study investigates the nature of lava-sediment interactions during the onset of magmatism in sedimentary basins with the aid of field outcrops in the Paraná-Etendeka Igneous Province (Brazil), Mull Lava Field (UK), and Midland Valley Basin (UK). Both subaerial and invasive lava flows were identified with associated features ranging from peperites, loading structures, pillow-like peperites, rootless cones, and lavas with sharp contacts. Density contrasts between liquid magma and unconsolidated sediments make lava invasion a predictable phenomena in such environments, however, variations in sediment properties such as water saturation, porosity and cohesion may effectively restrict the process of invasion, the degree of loading and more dynamic processes leading to peperite and pillow-like peperite. Surface outcrop analogues form a key component to understand the potential impact of volcanism and magma-sediment interactions on non-volcanic reservoir rocks located proximal to the basalt-sediment transition. The intimate mixing of magma with sediment is generally restricted to a few meters from the lava-sediment contact, with an associated minor impact on reservoir quality. However, the process of lava invasion may extend this impact further and may lead to partial or complete compartmentalization of associated reservoir units and may additionally impact correlation at the detailed reservoir level.

火山作用期间熔岩流入低固结沉积物中会导致多种熔岩-沉积物相互作用过程。了解这些过程及其产品对于评估火山内和火山下远景环境中的储层质量和连通性至关重要。这项研究借助巴拉那-埃滕德卡火成岩省（巴西），穆拉瓦河田（英国）和米德兰谷盆地（英国）的田间露头，研究了沉积盆地岩浆作用发生期间熔岩-沉积物相互作用的性质。航空熔岩流和侵入性熔岩流均具有相关的特征，包括钙铁矿，加载结构，枕状钙铁矿，无根圆锥体和尖锐接触的熔岩。液体岩浆和未固结沉积物之间的密度对比使熔岩侵入成为此类环境中的可预测现象，但是，诸如水饱和度，孔隙度和内聚力等沉积物特性的变化可能会有效地限制侵入过程，负荷程度和更动态的过程，从而导致珍珠岩和枕头状的珍珠岩。地表露头类似物是了解火山作用和岩浆-沉积物相互作用对玄武岩-沉积物过渡附近非火山岩储层潜在影响的关键组成部分。岩浆与沉积物的紧密混合通常被限制在距熔岩-沉积物接触面几米的范围内，对储层质量的影响较小。然而，