Mineralogy and geochemistry of alluvial sediments from the Kadey plain, eastern Cameroon: Implications for provenance, weathering, and tectonic setting

Tang, Sylvie Désirée Noa; Atangana, Jacqueline Ntsama; Onana, Vincent Laurent

doi:10.1016/j.jafrearsci.2020.103763

Cited by 15 publications

(4 citation statements)

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“…Redox−sensitive elements, such as Mo, U, V, Ni, and Cr, can reflect different enrichment degrees in redox environments [15,47,48]. Therefore, trace element ratios have been widely adopted to record the changes in palaeo−redox conditions in the river and marine sediments [41,49,50]. The inquiry of trace elements in sediments from the Changsha kiln presented herein provided a critical data point for the study of paleo−hydrological and provenance changes in the Xiangjiang River.…”

Section: Introductionmentioning

confidence: 99%

“…In general, REEs are characterized by weak mobility and negligible elemental fractionation during the weathering, transport, deposition, and diagenesis of source rocks [35,36]. Due to their conservative characteristic, REEs are frequently applied as reliable source tracers in the evolution of river or marine provenance [37][38][39], applied to reflect water−rock interactions [40,41], source area characteristics [42,43], human disturbances [34,44,45]. Trace elements have multiple valence states and can exhibit different geochemical behavior under varying redox conditions, so they can be employed to reconstruct the water oxidation−reduction environment [46].…”

Section: Introductionmentioning

confidence: 99%

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Hydrological Regime, Provenance, and Impacts on Cultural Development at Changsha Kiln Archaeological Site since 1300 a, Lower Xiangjiang River, China

Guo

Mao

Shan

et al. 2022

Land

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Changsha kilns were exported to more than 20 countries and regions and were an essential part of the culture in the central Yangtze River during the late Holocene. Reconstructing the hydrological landform and sedimentary history of its surrounding areas (Shizhu) is significant for further constraining any links between regional paleoenvironmental change and the human−land relationship in the lager river valley. To examine paleo−hydrological and provenance evolution, the rare earth element (REE) and trace element ratio from the Shizhuping (SZP) section were analyzed. The SZP section records the paleo−hydrological evolution over 1300 years: river network cutting plain landscape—Shizhu Lake—river floodplain—Shizhu Lake reformation—Shizhu flat. This section was labeled as stages IV to I, respectively. The deposition of stages IV was wind and dust accumulation during the Last Glacial. The provenance of stages III (1288–1094 a.BP) was wasted from the ceramic production process. The layer of stage II (1094–380 a.BP) was in two parts. In stage II−2 (1094–890 a.BP), provenance was dominated by granite. Sedimentary rocks became the source of stage II−1 (890–380 a.BP). In stages I (380 a.BP–), the primary material sources were anthropogenic bedding and weathering erosion deposits around the slope. During the Medieval Warm Period, the climate was warm and humid, and the rising water level of the Xiangjiang River led to the emergence of lakes in the Shizhu area. The migration of northern China into Changsha kiln brought new technology and labor. In the late Five Dynasties, the climate turned dry, and the falling water level of the Xiangjiang River caused Changsha kiln to lose its commercial wharf.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hydrological Regime, Provenance, and Impacts on Cultural Development at Changsha Kiln Archaeological Site since 1300 a, Lower Xiangjiang River, China

Guo

Mao

Shan

et al. 2022

Land

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“…The petrography and geochemistry of clastic sediments represent an archive for understanding of sand provenance, the tectonics as well as weathering conditions of the source (Cullers, 2000;Kumar et al, 2019;Noa Tang et al, 2020). The bulk compositions of sediments-major elements, trace elements, rare earth elements (REEs) and their elemental ratios are the sensitive indicators which reserve the signs involving of these processes from source to basin.…”

Section: Introductionmentioning

confidence: 99%

Geochemical signatures of recent bar deposits in the Tista river, Bangladesh: Implications to provenance, paleoweathering and tectonics

Biswas

Alam

Hasan

et al. 2020

Journal of Nepal Geological Society

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Petrography and geochemical composition of sediments is a sensitive indicator which archives the signature of a previous record of a source rock and depositional environments in a basin. This study deals with the elemental geochemistry of recent bar deposits of the Tista river in the north western part of Bangladesh to evaluate their provenance, paleoweathering and tectonic setting. Petrographically, the sediments are rich in quartz (70%), whereas feldspar and lithic fragments are found about 8% and 3%, respectively. The geochemical composition of the samples exhibits dominantly quartzose litharenites with low grade sedimentary and metasedimentary lithics, low feldspar indicates tectonic provenance field of recycled orogeny. Discrimination functions revels that the sediments of the Tista river are the derivation of active continental margin. The analyses also reflect that the sediments are dominantly a mixture of felsic (e.g., granitic/Gneiss, quartzite, amphibolite, granulite facies rock types) and some of mafic source (e.g., alkali-basalt/greenschist facies). It may occur, since 60% of the sedimentary flux carried out by the river from low-grade metamorphic rock and the rest from high-grade rock (in the west and north Sikkim Himalaya respectively). The weathering indices highlight that the source rocks have not undergone significant chemical weathering. The immature sorting status and petrographic evidences indicate that the sediments deposited in the Tista river basin are simply the product of mechanically weathered rocks.

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“…Although stream sediment geochemistry can be used to search for metal anomalies, this type of sample remains transported, and it is imperative to involve other geochemical prospecting methods such as litho-geochemistry. Indeed, the difficulty in analyzing stream sediment data lies in determining the source from which it originates (Ndome Effoudou-Priso et al, 2014; Sorokina, 2019; Noa Tang et al, 2020). The availability of outcropping rock samples near stream sediment sampling points for litho-geochemical analysis would be a major asset in delineating areas with high gold potential.…”

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confidence: 99%

Identifying Areas of High Gold Potential Using Geochemical Prospecting Methods: The Tenado Area in the Boromo Birimian Belt, West-Central Burkina Faso, West Africa

Tarnagda,

Ouiya,

Sawadogo

2024

ESJ

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The investigation area is located in the central-western region of Burkina Faso, in a geological environment that incorporates the Paleoproterozoic formations of the Boromo greenstone belt. This zone already has several gold showings and an active zinc mine, but no major gold deposits. The aim of this study is to define target areas with high gold potential for further prospecting. To meet this objective, we mainly used total rock geochemistry and stream sediment geochemistry methods. The combination of stream sediment gold content and litho-geochemical data has enabled us to highlight two areas of gold (Au) and various metal anomalies. The gold content of stream sediments is mainly influenced by that of the parent rock from which they are derived. In fact, strong gold anomalies are more common in clay sediments than in sandy sediments. These clay sediments are derived from basic rocks (basalt) and intermediate rocks (andesite-dacite), while the gold-poor sandy sediments are derived from granitoids. Basic to intermediate rocks are fertile for primary gold. Anomaly zone one (01) in the northern part of the study area (Kelsio, Zoula, Poa and Dyoro) and anomaly zone two (02) in the southern part of the study area (Kwademan, Baguiomo, Bérédo, Bonga and Baganapou) show occurrences of mainly gold and various metals (Zn, Cu, Ni).

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Mineralogy and geochemistry of alluvial sediments from the Kadey plain, eastern Cameroon: Implications for provenance, weathering, and tectonic setting

Cited by 15 publications

References 61 publications

Hydrological Regime, Provenance, and Impacts on Cultural Development at Changsha Kiln Archaeological Site since 1300 a, Lower Xiangjiang River, China

Hydrological Regime, Provenance, and Impacts on Cultural Development at Changsha Kiln Archaeological Site since 1300 a, Lower Xiangjiang River, China

Geochemical signatures of recent bar deposits in the Tista river, Bangladesh: Implications to provenance, paleoweathering and tectonics

Identifying Areas of High Gold Potential Using Geochemical Prospecting Methods: The Tenado Area in the Boromo Birimian Belt, West-Central Burkina Faso, West Africa

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