ELSEVIER Sedimentary Geok Contents Volume 113, 1997 Environmental controls on perennial and ephemeral carbonate lakes: the central palaeo-Andean Basin of Bolivia during Late Cretaceous to early Tertiary times G. Camoin, J. Casanova, J.-M. Rouchy, M.-M. Blanc-Valleron and J.-F. Deconinck Nearshore, temperate, carbonate depositional systems (lower Tortonian, Agua Amarga Basin, southern Spain) implications for carbonate sequence stratigraphy C. Betzler, T.C. Brachert, J.-C. Braga and J.M. Martin Development of a lake in a subsiding basin in front of a Saalian ice sheet (Kleszcz6w Graben, central Poland) K. Brodzikowski, A.J. Van Loon and T. Zielitiski Facies analysis of an Upper Cretaceous high-energy rudist-dominated carbonate ramp (Matese Mountains, central-southern Italy): subtidal and peritidal cycles D. Ruberti Geochemical discrimination of clastic sedimentary rock sources P.W. Fralick and B.I. Kronberg Mid-Cretaceous phosphate platforms of the Russian Craton A.V. Ilyin Quench textures in altered spherules from the Cretaceous—Tertiary boundary layer at Agost and Caravaca, SI Spain F. Martinez Ruiz, M. Ortega Huertas, I. Palomo and P. Acquafredda Provenance and tectonic implications of heavy minerals in Pliocene—Pleistocene siliciclastic sediments of the southern Apennines, Italy P. Acquafredda, A. Fornelli,G . Piccarreta and V. Summa f pre sSed Recrystallization versus neomorphism, and the concept of ‘significant recrystallization’ in dolomite research H.G. Machel Hierarchy of high-frequency orbital cycles in Cretaceous carbonate platform strata B. D’ Argenio, V. Ferreri, S. Amodio and N. Pelosi Radar structure of a Gilbert-type delta, Peyto Lake, Banff National Park, Canada D.G. Smith and H.M. Jol Simulation models of salt-marsh morphodynamics: some implications for high-intertidal sediment couplets related to sea-level change J.R.L. Allen The unusual hydrodynamical behaviour of freshwater oncolites E.P. Verrecchia, P. Freytet, J. Julien and F. Baltzer Tectonic systems tract and depositional architecture of the western border of the Triassic Iberian Trough (central Spain) \. Sopefia and Y. Sanchez-Moya Volume Stratigraphy and tectonosedimentary evolution of a late Aptian—Albian carbonate margin: the northeastern Jebel Akhdar (Sultanate of Oman) J.-P. Masse, J.B orgomano and S. Al Maskiry Be 0k Re view Terrigenous Clastic Depositional Systems, by W.E. Galloway and D.K. Hobday C.R. Fielding Subject Index Vols. 107-113