Some features of the site may not work correctly. -from Authors. The former Triassic–Middle Jurassic outer passive continental margin of the Neo-Tethys imbricated and a nappe stack in lower plate (wider Adriatic) position was formed in front of the propagating obducting ophiolites. Simultaneously, the up-thrown (northern) block received sediments from more distant Archean sources in the Zimbabwe and/or Kasai cratons, (b) Hiatus in sedimentation occurred at both sites between ca. It consists predominantly of andesitic clasts with conspicious augite and brown hornblende, but it also contains fragments of granite, metagabbro, mica-schist, serpentinite and glaucophane. However, tectonic discrimination studies now look set to be eclipsed by techniques which exploit the characteristics of individual grains, rather than bulk populations (see below). Major element chemistries and low to intermediate weathering indices for all sediments indicated a lack of substantial chemical weathering. Geochemical approaches have several advantages, including applicability to both matrix-rich sandstones and shales and ability to constrain provenance age and geochemical history. The structural depression that occupies the Okavango Basin in southern Africa comprises a depo-centre within the intracratonic Kalahari Basin where sediments of the Cenozoic Kalahari Group have accumulated. Provenance analysis is an effective method for discriminating the types of the sedimentary mother rock, restor-ing the sedimentary environment, and determining the geographic location of the mother rock district. To investigate potential metamorphic sources, 18 detrital rutile samples were analysed for a total of 1,431 analyses. gence of sedimentary provenance analysis as a distinct field of study was spurred by the publication of several monographs that originated at dedicated meetings, starting with the book Provenance of Arenites edited by G.G. 6. Sm and Nd reservoirs within the shale change considerably with progressive diagenesis. Grains with a Laurentian or a Caledonian affinity have likely been recycled through Devonian basins to the south. Sediment Provenance: Influences on Compositional Change from Source to Sink provides a thorough and inclusive overview that features data-based case studies on a broad range of dynamic aspects in sedimentary rock structure and deposition. 10,000 feet) have whole rock Nd model ages of 1400 - 1500 Ma, whereas sandstones buried deeper than ca. These areas represent an uplifted and variably dissected Mesozoic magmatic arc. This study investigates the value added by bulk‐sediment geochemical analysis in interpreting provenance in a passive margin clastic basin, the Upper Jurassic–Lower Cretaceous deltaic sediments of the Scotian Basin. When the energy of the transporting current is not strong enough to carry these particles, the The aim of this project is (1) to study the grain-size dependence of garnet composition and (2) establish new interpretation schemes that allow for better discrimination of the detrital garnet minerals and their potential host rock lithologies based on robust probabilistic models. The study of sedimentary provenance interfaces several of the mainstream geological disciplines (mineralogy, geochemistry, geochronology, sedimentology, igneous and metamorphic petrology). WELTJE, D. MUNSTERMAN Abstract Understanding sedimentary provenance is essential when investigating clastic strata. Subsequent milestones included Developments in Sedimentary Provenance Studies edited by A.C. Morton, S.P. Stream-driven gravelly traction carpets are expected to produce sheet-like units of clast- to matrix-supported conglomerate, characterized by a parallel or an a(p)a(i) clast fabric. 1. Previous studies interpreted a transport system dominated by relatively low-energy meandering rivers where the packages of conglomerate were interpreted as channel lags flanked by sandstone and siltstone being point bar and overbank deposits. A classification scheme for volcanic grains, involving five classes dependent on palaeovolcanic and neovolcanic sources. The early erosional products resedimented in adjacent basins near to uplifting orogens, which underwent unroofing, were only rarely identified. The prolonged convergence along the Southeast Asian margin from the Mesozoic to Cenozoic shaped the region into a complex tectonic collage of microblocks of diverse origin and evolutionary history. In all samples, the acid-soluble Nd is more radiogenic than the Nd in the corresponding silicate fraction, and the difference between the two reservoirs increases with depth. 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