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Reservoir architecture in a terminal alluvial plain: an outcrop analogue study (Upper Triassic (2002)
| Content Provider | CiteSeerX |
|---|---|
| Author | Hornung, J. Aigner, T. |
| Description | This outcrop analogue study investigates Triassic fluvial sandstones of the Stubensandstein Formation which were deposited on a terminal alluvial plain under semi-arid to sub-humid climatic conditions in the land-locked South German Keuper Basin. The Stubensandstein may serve as an analogue for reservoir units in comparable continental basins. Data came from studies of 13 large sandpits, together with a subsurface database supported by three well-log clusters (comprising up to 20 boreholes) and four single wells. Lithofacies types vary along a palaeogeographical gradient from proximal erosion and non-deposition to fluvial bed-load, to distal suspended-load deposits and finally to playas with lacustrine carbonates. Within a three-fold hierarchy of cyclicity, meso- and macro-scale cycles could be correlated regionally using an approach based on stratigraphic base-level changes. The observed sedimentary patterns, together with palaeosol types, their stable isotope signals and palynological data, indicate that palaeoclimatic fluctuations exerted the principal control on stratigraphic architecture and cyclicity. Progradation of sand wedges into the basin occurred while climate was arid but becoming more humid. As playa lake |
| File Format | |
| Language | English |
| Publisher Date | 2002-01-01 |
| Publisher Institution | Part 1: Sedimentology and |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
