A computer-implemented method for generating representations of a subsurface, the computer-implemented method comprising: obtaining representation information, the representation information defining a set of computational stratigraphy model representations, the set of computational stratigraphy model representations defining subsurface configurations in a physical space such that the subsurface configurations are defined as a function of depth, wherein the set of computational stratigraphy model representations are generated layer-by-layer using a forward stratigraphic model that simulates one or more sedimentary processes; obtaining conditioning information, the conditioning information defining one or more conditioning characteristics in the physical space such that the one or more conditioning characteristics are defined as a function of depth, wherein the one or more conditioning characteristics are determined based on one or more well logs obtained from borehole logging and/or interpreted seismic information; converting the set of computational stratigraphy model representations from the physical space to a layer space such that the subsurface configurations are defined as a function of layers, wherein the set of computational stratigraphy model representations are converted from the physical space to the layer space based on the layer-by-layer generation of the set of computational stratigraphy model representations by the forward stratigraphic model; converting the conditioning information from the physical space to the layer space such that the one or more conditioning characteristics are defined as the function of layers; performing modeling within the layer space based on the set of computational stratigraphy model representations within the layer space and the one or more conditioning characteristics within the layer space to generate multiple subsurface representations within the layer space, the multiple subsurface representations including regions of the subsurface configurations defined by the set of computational stratigraphy model representations based on the one or more conditioning characteristics, wherein the performance of the modeling within the layer space includes simultaneous simulation of both subsurface structures and subsurface properties using the regions of the subsurface configurations defined by the set of computational stratigraphy model representations, the multiple subsurface representations generated to include different subsurface structures and subsurface properties such that the multiple subsurface representations define different subsurface configurations; and converting the multiple subsurface representations from the layer space to the physical space. obtaining representation information, the representation information defining a set of computational stratigraphy model representations, the set of computational stratigraphy model representations defining subsurface configurations in a physical space such that the subsurface configurations are defined as a function of depth, wherein the set of computational stratigraphy model representations are generated layer-by-layer using a forward stratigraphic model that simulates one or more sedimentary processes; obtaining conditioning information, the conditioning information defining one or more conditioning characteristics in the physical space such that the one or more conditioning characteristics are defined as a function of depth, wherein the one or more conditioning characteristics are determined based on one or more well logs obtained from borehole logging and/or interpreted seismic information; converting the set of computational stratigraphy model representations from the physical space to a layer space such that the subsurface configurations are defined as a function of layers, wherein the set of computational stratigraphy model representations are converted from the physical space to the layer space based on the layer-by-layer generation of the set of computational stratigraphy model representations by the forward stratigraphic model; converting the conditioning information from the physical space to the layer space such that the one or more conditioning characteristics are defined as the function of layers; performing modeling within the layer space based on the set of computational stratigraphy model representations within the layer space and the one or more conditioning characteristics within the layer space to generate multiple subsurface representations within the layer space, the multiple subsurface representations including regions of the subsurface configurations defined by the set of computational stratigraphy model representations based on the one or more conditioning characteristics, wherein the performance of the modeling within the layer space includes simultaneous simulation of both subsurface structures and subsurface properties using the regions of the subsurface configurations defined by the set of computational stratigraphy model representations, the multiple subsurface representations generated to include different subsurface structures and subsurface properties such that the multiple subsurface representations define different subsurface configurations; and converting the multiple subsurface representations from the layer space to the physical space.