A detailed lithofacies analysis in Continental Flood Basalt Provinces allows the comprehension of their evolution and paleoenvironmental significance. In the northern portion of the Paraná-Etendeka Igneous Province (PEIP), in Brazil (Uberlândia-Araguari area), a volcanological and stratigraphic approach provided evidence that the basaltic volcanic succession is not monotonous, involving different lava flow morphologies and architecture. The volcanic succession reaches a thickness of ca. 300 m and includes four lithofacies associations: pillow lavas, compound pahoehoe, simple pahoehoe, and sediment-matrix basalt breccia. Pillow lavas, simple pahoehoe, and compound pahoehoe characterize the onset of volcanic activity in the area. Sediment-matrix basalt breccia and thick simple pahoehoe lavas occur in upper stratigraphic levels. Some of these thick igneous bodies can represent invasive lavas or shallow intrusions. In the study area, the common presence of volcanic deposits and structures formed in wet conditions is evidenced by the occurrence of pillow lavas, undulatory columns, and interleaved lacustrine and fluvial sedimentary rocks. These deposits reflect different environmental conditions from those previously described as arid in other portions of the PEIP. Low-temperature post-depositional alteration has affected the volcanic and sedimentary rocks of the study area, obliterating many of the primary sedimentary structures. The subaerial and subaqueous lavas are chemically similar, and compatible with high-TiO₂ Pitanga magma type. The Uberlândia-Araguari area and the southern part of the PEIP have a similar stratigraphic style both characterized by the dominance of compound pahoehoe lavas at the base and by an intermittent volcanism, which is evidenced by the intercalation of sedimentary deposits with lavas.

通过对大陆玄武岩省份的岩相进行详细分析，可以全面了解其演化和古环境意义。在巴西（Uberlândia-Araguari地区）的巴拉那-埃滕德卡火成岩省（PEIP）的北部，采用火山学和地层学方法提供了证据，证明了玄武质火山演替不是单调的，涉及不同的熔岩流形态和构造。火山演替的厚度约为 300 m，包括四个岩相组合：枕状熔岩，复合pahoehoe，简单pahoehoe和沉积物-基质玄武岩角砾岩。枕状熔岩，简单的pahoehoe和复合pahoehoe是该地区火山活动开始的特征。在上地层中出现了沉积物基质玄武岩角砾岩和厚厚的简单的pahoehoe熔岩。这些厚厚的火成体中的一些可以代表侵入性熔岩或浅侵入。在研究区，火山岩沉积物和在潮湿条件下形成的结构的共同存在可以通过枕形熔岩，起伏的柱子，交错的湖相和河流相沉积岩的出现来证明。这些沉积物反映出与先前在PEIP其他部分中描述的环境条件不同的环境条件。低温沉积后的变化影响了研究区的火山岩和沉积岩，使许多主要的沉积构造消失了。地下和水下熔岩在化学上相似，并且与高TiO相容 枕状熔岩，起伏的柱子，交错的湖相和河流沉积岩的出现证明了在潮湿条件下火山沉积物和结构的普遍存在。这些沉积物反映出与先前在PEIP其他部分中描述的环境条件不同的环境条件。低温沉积后的变化影响了研究区的火山岩和沉积岩，使许多主要的沉积构造消失了。地下和水下熔岩在化学上相似，并且与高TiO相容 枕状熔岩，起伏的柱子，交错的湖相和河流沉积岩的出现证明了在潮湿条件下火山沉积物和结构的普遍存在。这些沉积物反映出与先前在PEIP其他部分中描述的环境条件不同的环境条件。低温沉积后的变化影响了研究区的火山岩和沉积岩，使许多主要的沉积构造消失了。地下和水下熔岩在化学上相似，并且与高TiO相容 低温沉积后的变化影响了研究区的火山岩和沉积岩，使许多主要的沉积构造消失了。地下和水下熔岩在化学上相似，并且与高TiO相容 低温沉积后的变化影响了研究区的火山岩和沉积岩，使许多主要的沉积构造消失了。地下和水下熔岩在化学上相似，并且与高TiO相容₂ Pitanga岩浆类型。Uberlândia-Araguari地区和PEIP的南部地区具有相似的地层风格，其特征是底部的复合Pahoehoe熔岩占主导地位和间歇性的火山作用，这可以通过沉积沉积物与熔岩的夹层来证明。