Provenance and Tectonic Setting of the Proterozoic Turbidites in Hunan, South China: Geochemical Evidence

Evolution of the passive margin of the peripheral foreland basin: an example from the Lower Miocene Carpathian Foredeep (Czech Republic)

“…16E). With no extra input of detritus, the sediment recycling results in a negative correlation of SiO 2 and TiO 2 (Gu et al 2002). Such a trend can generally be followed for the studied samples (Fig.…”

Geochemical Discriminant for Provenance Characterization and Palaeogeography of Shales from Dahomey Embayment, Southwestern Nigeria

“…McLennan et al [3] plotted Th versus Sc to infer provenance and when applied in this study the Gbekebo-1 well samples fell mostly in intermediate source with some continental component input (Figure 5(c)). Gu et al [35] used Co/Th versus La/Sc diagram for provenance discrimination and its application to this study revealed samples plotting close to or above the line at Co/Th = 1.27, an indication of felsic to intermediate igneous source (Figure 5(d)). The chondrite normalization patterns of the REE (Figure 4) marked by a rather flat HREE, LREE enrichment, and a negative Eu anomaly suggestive of a felsic provenance.…”

Provenance and depositional setting of Lower Silurian siliciclastic rocks on Hainan Island, South China: Implications for a passive margin environment of South China in Gondwana

“…The presence of relatively fine-grained slates (pelitic) of low maturity within the lower unit in the eastern Hainan suggests that the basinal depocenter was most likely located in eastern Hainan. This corresponds to the possible presence of radiolarian fossils, the occurrence of organic matter and star-like pyrite in off-white to Floyd et al, 1989) suggesting that the Tuolie samples follow a typical magmatic trend for felsic materials, (b) La/Th vs. Hf plot (after Floyd and Leveridge, 1987) showing a predominance of felsic source with increasing old sediment component, and (c) Co/Th-La/Sc diagram (after Gu et al, 2002) indicating most of the Tuolie samples lie close to the felsic volcanic rock field due to Co/Th values of generally <1.0.…”

“…The K 2 O/Al 2 O 3 ratios (generally < 0.25) and weak but positive correlations of Al 2 O 3 with LREE (r = 0.52) and HREE (r = 0.36; Table 4), reflect their association with minerals preferentially concentrated in clay mineral-rich rocks, indicating heavy mineral concentrations are unlikely to play a major role on the composition of the Tuolie samples. Consequently, the effect of sorting dominated by quartz dilution (e.g., Xu et al, 2007b) was likely responsible for the decrease of all trace elements and the increase of SiO 2 in the Tuolie samples (e.g., Gu et al, 2002).…”

“…The petrography, mineralogy and the whole-rock geochemistry (major-and trace elements, and Sr-Nd isotopes) of (meta)clasticsedimentary rocks have been widely used to determine provenance of source areas, to evaluate the nature of paleoweathering in the source region, and to constrain the tectonic setting and nature of depositional basins, and thereby to understand the evolution of continents (e.g., Nesbitt and Young, 1984;Taylor and McLennan, 1985;Bhatia and Crook, 1986;Roser and Korsch, 1986;McLennan et al, 1990McLennan et al, , 1993McLennan et al, , 1995Fedo et al, 1995;Gu et al, 2002;Mader and Neubauer, 2004;Xu et al, 2007b;Diskin et al, 2011;Wang et al, 2013b;Tao et al, 2014). The age distribution of detrital zircon populations in (meta)sedimentary successions has also been successfully used as a powerful proxy to constrain the provenance characteristics of clastic sediments, to test or clarify the affiliation of different blocks or microcontinents, and thereby to unravel the tectonic histories and paleogeographical reconstructions of paleocontinents or terranes, which is a key component of research into geodynamics of basin formation and orogenic processes (e.g., Gerdes and Zeh, 2006;Wang et al, 2007Wang et al, , 2010Wang et al, , 2012bCondie et al, 2009;Yu et al, 2010;Cawood et al, 2013a,b;Li et al, 2013;Zhang et al, 2014).…”