盆地中有机碳的分布取决于有机物质输入与相应岩性分布的相互作用。不同类型的有机物具有不同的大小，因此根据它们的沉降行为以不同的方式分布。
The distribution of organic carbon in a basin depends on the interaction of the input of organic matter into the basin and its corresponding lithology distribution. Different types of organic material have different sizes and are thus distributed differently according to their settling behaviour.
OF-Mod 1D工具的开发是为了
基于不同的地层和地球化学参数来模拟有机相
。在这项研究中，使用这个工具分析了卡马穆-阿尔马达盆地。这个盆地起源于冈瓦纳大陆裂解期间的伸展过程。在裂谷阶段，湖环境沉积富含有机物的页岩的条件非常理想。
The OF-Mod 1D tool was developed in order to model organic facies based on different stratigraphic and geochemical parameters. In this study, the Camamu-Almada Basin is analysed using this tool. This basin had its origin through extensional processes during the breakup of Gondwana. During the rift stage, there were ideal conditions for deposition of organic-rich shale on lacustrine environment.
在这个沉积系统中定义了四个不同的间断，但只有两个代表了当前石油系统的源岩。
Four different intervals were defined in this depositional system, but only two represent the source rock of the current petroleum systems.
结果表明，这两个地层主要由I型干酪根组成
。尽管只有一种类型的干酪根，但可以区分出两种不同的有机相类别：AB为莫罗多巴罗地层；B为里奥德孔塔斯地层。
The results indicate that these two formations are mostly composed of kerogen of type I.
Even though there is only one type of kerogen, it was possible to distinguish two different categories of organic facies
: AB for Morro do Barro formation; and B for Rio de Contas formation.
