Type and genesis of amphibole in the Huanghe River and Changjiang River estuaries and significance of its provenance

Fan, Shuimiao; Jin, Bingfu; Wei, Yaru; Dang, Lili; Wang, Mengyao; Kong, Qingxiang

doi:10.1007/s12303-020-0061-4

Cited by 4 publications

(6 citation statements)

References 45 publications

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“…There are differences in the FeO and MgO contents of amphibole from the Changjiang and Huanghe rivers. The FeO and MgO contents in amphibole from the CJ are 14.4% and 12%, respectively, while those from the HH are 16.1% and 10.6%, respectively (Jin et al, 2013;Wang, 2019;Fan et al, 2021). When projecting the amphibole from different stations in the South Yellow Sea onto a FeO-MgO scatter plot (Figure 6A), distinct zones are observed for amphibole from the CJ and HH.…”

Section: Identification Of Seaward Stream Sedimentsmentioning

confidence: 98%

“…(A), FeO-MgO content; (B), proportion of source rock types. Average value of Huanghe River (HH-mean) and Changjiang River (CJ-mean) referenced from Jin et al, 2013;Wang, 2019;Fan et al, 2021. Shandong Peninsula along the Bohai Bay and turning south at Chengshan Head, entering the SYS; then flowing southward along the Subei tide-induced coastal current (STCC), with the front reaching as far as near 30°N (Qin et al, 2018). The central region of the SYS is influenced by both the HH and the CJ.…”

Section: Identification Of Seaward Stream Sedimentsmentioning

confidence: 99%

“…Amphibole, as one of the major rock-forming minerals, is widely distributed in sediments from rivers and marine areas worldwide (Carver et al, 1972;Yue et al, 2018;Fan et al, 2021). In addition, amphiboles in rivers at mid to high latitudes have low weathering degrees and show little variation in chemical elements.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, amphiboles in rivers at mid to high latitudes have low weathering degrees and show little variation in chemical elements. Amphiboles derived from different rocks under different diagenetic and mineralization conditions have specific compositions and structural characteristics, which can clearly reflect the differences in source rock types and sedimentary environments, providing a basis for provenance analysis (Liu, 1986;Zhao et al, 1993;Hawthorne et al, 2012;Jin et al, 2013;Fan et al, 2021). The Mg-(Na+K+Ca)-(Fe 2+ +Fe 3+ ) ternary diagram can be used to differentiate the genetic types of amphiboles (Chen et al, 1988).…”

Section: Introductionmentioning

confidence: 99%

“…The Mg-(Na+K+Ca)-(Fe 2+ +Fe 3+ ) ternary diagram can be used to differentiate the genetic types of amphiboles (Chen et al, 1988). The analysis of different rivers such as the Liaohe River, Yalu River, Huanghe River, Changjiang River, and Huaihe River, have provided a systematic study of the origin characteristics, crystallization temperature and pressure conditions, and geochemical features of amphiboles in mid-high latitude rivers in China (Jin et al, 2014;Wang, 2019;Fan et al, 2021). With the deepening of research on the source-to-sink system, further studies on the sedimentary clastic amphiboles in marginal seas and continental shelves are needed.…”

Section: Introductionmentioning

confidence: 99%

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Genetic types and provenance indication of clastic amphibole in the South Yellow Sea

Wang,

Jin,

Liu

et al. 2024

Front. Mar. Sci.

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The main focus of studying sediment sources in marine areas is to determine the properties of clastic minerals originating from different rivers. Variations in the characteristics of clastic minerals occur due to differences in the types of source rocks within the watershed. Determining the source rock of clastic minerals in the marine area can improve the accuracy of provenance analysis. Electron probe microanalysis of 258 amphibole grains from six surface stations in the South Yellow Sea (SYS) was conducted to calculate the numerical and characteristic values of cations in the crystal structure. The results showed that amphibole in the SYS is mainly magnesiohornblende (52.2% ~ 81.4%) in the calcic amphibole subgroup, followed by tschermakite. The source rock types of amphibole are mainly different types of magmatic (ultrabasic, basic, and intermediate acidic) and metamorphic rocks. Amphibole derived from intermediate-acid intrusive rocks accounts for a large proportion (>40%). The genetic analysis of clastic amphibole in the SYS showed that most of the medium-acid invading amphibole belong to crust-mantle type, followed by mantle type. Most of the amphibole from metamorphic origins are of medium-low pressure type (± 80%). Combined with electron probe analysis of amphibole from the Huanghe River (the Yellow River, HH) and Changjiang River (the Yangtze River, CJ), the amphibole in the SYS exhibits characteristics inherited from these two rivers. The northern sea area has a strong resemblance to the sediments from the HH, while the southern area is more influenced by sediments supply from the CJ. The central area represents a mixed zone with a higher sediment supply from the HH. The clastic amphibole deduces the type of source rock in different watersheds, serving as a crucial link between the source rock, watershed, and marine area, providing a basis for provenance analysis.

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Section: Identification Of Seaward Stream Sedimentsmentioning

confidence: 98%

Section: Identification Of Seaward Stream Sedimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Genetic types and provenance indication of clastic amphibole in the South Yellow Sea

Wang,

Jin,

Liu

et al. 2024

Front. Mar. Sci.

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Identification of sediment provenance in the South Yellow Sea using detrital amphibole geochemistry

et al. 2022

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Primary source of titanomagnetite ores at the Orokolo Bay placer deposit: Implications for petrogenesis

Hulijeli,

Watanabe,

Nishikawa

et al. 2024

Resource Geology

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Coastal and river sand sequences of Holocene age at Orokolo Bay in Papua New Guinea are host to secondary titanomagnetite ore deposits. The resource developer (Mayur Resources) declares a measured orebody of 139 million tons at grades of 11.35% Fe, 1.94% Ti, and 712 ppm Zr. Orokolo Bay is located near the boundary between the Papuan Thrust and Fold Belt and the Aure Fold Belt. This region is characterized by sedimentary rocks of the Papuan Basin, which are intruded and overlain by a diverse array of magmatic intrusive and volcanic rocks, ranging from mafic alkaline to felsic calc‐alkaline types related to arc–continent collisions in the Cenozoic. The Vailala and Purari rivers located to the east and west of Orokolo Bay, respectively, are the main sediment pathways. Earlier provenance studies have suggested that the deposited sediments mainly come from the erosion of volcanic rocks found within the catchments of these two rivers. However, these studies did not specifically identify the primary source of the Fe‐Ti ores within this region. Here, we report on a potential primary source of the Fe‐Ti ores by examining the occurrence and chemical compositions for detrital titanomagnetites, and associated pyroxene and amphibole minerals. The purpose of this was to discern specific attributes of the primary source for its identification. Lithic sediments comprised of magnesio‐hornblende (Mhbl), tschermakaite (Tsr) and magnesio‐hastingsite (Mhst) amphiboles, clinopyroxene (Cpx), and Fe‐Ti oxide minerals dominate the heavy sands. Feldspar is more abundant than quartz, and Cr‐spinel is rare. Two primary titanomagnetite types were categorized based on their homogeneous grain textures and TiO2 content, Tmt1 (average 28 wt% TiO2) and Tmt2 (average 7 wt% TiO2). Pleonaste exsolutions and zircon inclusions distinguish Tmt1 from Tmt2, while apatite and quenched glass inclusions occur in both. A portion of both primary titanomagnetites exhibits hydrothermal overprinting, this subset was categorized as Tmt3 (average 12.5 wt% TiO2). Fe‐Ti oxides are associated with Cpx and amphiboles as inclusions, and as pseudomorphs in opacitic amphiboles. Tmt1 coexists predominantly with Mhst‐Tsr but also appears less frequently with Mhbl and Cpx. Tmt2 occurs almost exclusively with Mhbl and Cpx. Titanomagnetite chemistry is low in Cr, Mg, and V content suggesting crystallization from evolved melts. Tmt3 is shows enriched Si, Ca, Al, and Mg concentrations that are characteristic of late‐stage fluids derived from calcareous rocks. Amphibole and Cpx chemistry indicate they were derived from a subalkaline source magma of arc affinity. Fe‐Ti thermobarometry reveals Tmt1 (990 to 967°C, −0.51 to −0.18 ΔNNO) formed at higher temperatures and in less oxidized conditions than Tmt2 (834 to 689°C, 0.33 to 3.2 ΔNNO). Amphibole thermobarometry reveals Mhst‐Tsr and Mhbl formed under similar conditions as Tmt1 and Tmt2, respectively. The lack of Cr‐spinel, olivine, and the abundant occurrence of zircon and Mhbl indicate an evolved subalkaline source characterized by felsic rocks related to arc magmatism. The only volcanic source which aligns with these characteristics is Mount Yelia within the Vailala River catchment. Compositional variation between Tmt1 and Tmt2 titanomagnetites and associated silicate minerals is attributed to heterogeneous temperature and ƒO2 conditions within the melt during crystallization. The provenance of Ti‐rich titanomagnetite ores from sources related to arc magmatism indicates the potential of other areas associated with arc activity in Papua New Guinea to host secondary deposits rich in Fe‐Ti ores.

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Type and genesis of amphibole in the Huanghe River and Changjiang River estuaries and significance of its provenance

Cited by 4 publications

References 45 publications

Genetic types and provenance indication of clastic amphibole in the South Yellow Sea

Genetic types and provenance indication of clastic amphibole in the South Yellow Sea

Identification of sediment provenance in the South Yellow Sea using detrital amphibole geochemistry

Primary source of titanomagnetite ores at the Orokolo Bay placer deposit: Implications for petrogenesis

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