This study examines two Modern outcrop analogues to the Cormorant Formation of the Tern Field are in order to delimit controls on architectural development. Ground-truthing of a whole-rock trace element geochemical correlation technique is also undertaken in order to understand the processes controlling perceived correlations in similar studies on sub-surface data. The Huab River in Namibia is a Modern dryland fluvial system experiencing the development of a channel fan. Detailed sedimentary logging of the fan feature reveals a systematic variation in facies, from high net-to-gross deposits in the upstream portion to low net-to-gross deposits in the downstream portion. The Plio-Pleistocene deposits of the ancestral Rio Grande in New Mexico provide an example of a dryland fluvial system developed in an active rift setting with structural context preserved throughout the area. A systematic facies variation throughout the basins is identified and related to a structural control and reveals confinement of the fluvial system close to the bounding fault in the Palomas Basin. In the Hatch-Rincon Basin facies variations from high net:gross deposits in the basin centre to low net:gross deposits in the basin margin reflect subsidence upon two bounding faults. Sedimentological analysis of three cores from the Triassic Cormorant Formation divides the succession into three facies packages. Data from the two field analogues is utilised in constructing two depositional models and two architectural models. A terminal fan model and a typical through-draining braided fluvial system are envisaged as possible depositional mechanisms. Ground-truthing of a whole-rock trace element correlation technique was carried out in both field analogues. A grainsize control upon whole-rock trace element concentration is identified in both field areas, potentially limiting the ability of the technique to be responsive to provenance. This study shows that research in areas where depositional context is preserved can provide unambiguous data that is not available in ancient studies.

Mesozoic reservoirs in the Alwyn Area, N. North Sea, contain ephemeral/perennial fluvial depositions and associated flood plain fines deposited in a semi-arid environment.  Such successions are typically barren of fauna and monotonous in respect to t heir lithologies, which results in non-diagnostic wire-line log signatures.  This study proves the application of whole-rock geochemistry and mineral chemistry as an additional correction tool for such successions in 13 wells in the Alwyn Area. The geological and sedimentological environments and conditions were established from sedimentological reports provide by TotalFinaElf Exploration UK (TFE) and from core studies undertaken during this study.  Thirty-nine thin sections were analysed to investigate the mineral abundance in order to identify probable host minerals of the analysed chemical elements (ICP database provided by TFE and 202 XRF analyses in this study).  Distinguishing between autochthonous and allochthonous mineral content enables one to establish the processes that have modified the entire mineralogical and geochemical composition of the source rock.  The chemical elements themselves have been considered with particular regard to their mobility in aqueous fluids. It has been demonstrated that some of the immobile elements in this study are associated with particular heavy minerals.  Some elements (though not attributed to particular minerals) show significant, correlatable geochemical signatures.  The whole-rock geochemistry and the mineral chemistry of certain heavy minerals are used for provenance studies and chemostratigraphic correlation approaches.  In combination with Sm-Nd provenance ages from other studies and available data from literature possible provenances are identified.  Ratios between immobile elements are presented as down-hole logs.  Twenty-five chemostratigraphic units are established on which basis 13 of 14 wells could be correlated in field wide correlation schemes.