Abstract Paleo-thermometers in sedimentary basins often drive to misleading thermal modelling when applied alone or only on potentially productive Paleozoic source rocks. Different paleo-thermal and thermo-chronological data have been used as constraints to model the Silurian to Cenozoic succession of a recently drilled well in the onshore portion of the Baltic Basin, in northern Poland. This dataset provides an integrated platform for thermal maturity assessment contributing to the highly debated reconstruction of the thermal history of the Baltic Basin in the last decade. The well stratigraphy consists of a Lower Paleozoic marine clayey and arenaceous/calcareous succession, about 1000 m thick that is unconformably overlain by a 2000 m thick Permian to Cenozoic sequence, developed in a continental to shallow marine environment. Optical microscopy, FT-IR and Raman spectroscopy analysis of organic matter have been coupled with (U–Th)/He data to produce a robust vitrinite reflectance profile and constrain the 1D thermal modelling of the well. In addition, such a thermal maturity profile was validated by an independent thermal modelling calibrated by the smectite illitization kinetics. Both models identify high heat flow conditions (up to 1.7 HFU) at the end of Mesozoic. The Lower Paleozoic succession entered the late oil window of HC generation during this last heating event.

中文翻译：

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多相、持久沉积盆地热成熟度评估的综合平台，从经典到全新的热参数和模型：来自陆上波罗的海盆地（波兰）的示例

摘要 沉积盆地中的古温度计在单独或仅应用于具有潜在生产能力的古生代烃源岩时，常常会导致误导性的热模拟。波兰北部波罗的海盆地陆上部分最近钻探的一口井的志留纪到新生代序列已被用作约束，不同的古热和热年代学数据已被用作建模。该数据集为热成熟度评估提供了一个集成平台，有助于对过去十年中波罗的海盆地热历史的高度争议重建。该井地层由下古生界海相黏土和砂质/钙质层序组成，厚约 1000 m，不整合地上覆有 2000 m 厚的二叠纪至新生代层序，发育于陆相至浅海海洋环境。光学显微镜，有机物的 FT-IR 和拉曼光谱分析与 (U-Th)/He 数据相结合，可产生稳健的镜质反射率剖面并限制井的一维热模型。此外，这种热成熟度曲线通过由蒙脱石伊利石化动力学校准的独立热模型进行验证。两种模型都确定了中生代末期的高热流条件（高达 1.7 HFU）。在最后一次加热事件中，下古生界层序进入了 HC 生成的晚期油窗。这种热成熟度曲线通过由蒙脱石伊利石化动力学校准的独立热模型进行验证。两种模型都确定了中生代末期的高热流条件（高达 1.7 HFU）。在最后一次加热事件中，下古生界层序进入了 HC 生成的晚期油窗。这种热成熟度曲线通过由蒙脱石伊利石化动力学校准的独立热模型进行验证。两种模型都确定了中生代末期的高热流条件（高达 1.7 HFU）。在最后一次加热事件中，下古生界层序进入了 HC 生成的晚期油窗。