Geochemistry of Archean carbonaceous cherts deposited at immature island-arc setting in the Pilbara Block, Western Australia

Sugitani, Kenichiro; Yamamoto, Koshi; Wada, Hideki; Binu-Lal, S.S.; Yoneshige, Masakazu

doi:10.1016/s0037-0738(01)00230-5

Cited by 23 publications

(10 citation statements)

References 55 publications

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“…5a between FeO and TiO 2 may reflect differences in the iron oxide contents. The fact that all the samples define a single correlation between K 2 O and Al 2 O 3 has previously been reported and discussed by Sugitani et al (2002). Note that there is no komatiite in the Gunflint formation.…”

Section: Trace Element Concentrationssupporting

confidence: 59%

“…Because Al and Ti, generally considered to be immobile elements, are hosted in detrital phases in sediments, their presence in microquartz could be used to trace the input of detrital minerals produced by extensive alteration (Sugitani, 1998). Nevertheless, a correlation observed between K 2 O and Al 2 O 3 has been interpreted to reflect metasomatic silicification (Sugitani et al, 2002) due to secondary hydrothermal circulation or to syndepositional silicification during early stage of chert diagenesis. The scatter observed in Fig.…”

Section: Trace Element Concentrationsmentioning

confidence: 99%

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Micrometer-scale chemical and isotopic criteria (O and Si) on the origin and history of Precambrian cherts: Implications for paleo-temperature reconstructions

Marin‐Carbonne¹,

Chaussidon²,

Robert

2012

Geochimica et Cosmochimica Acta

102

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Section: Trace Element Concentrationssupporting

confidence: 59%

Section: Trace Element Concentrationsmentioning

confidence: 99%

Micrometer-scale chemical and isotopic criteria (O and Si) on the origin and history of Precambrian cherts: Implications for paleo-temperature reconstructions

Marin‐Carbonne¹,

Chaussidon²,

Robert

2012

Geochimica et Cosmochimica Acta

102

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“…For analyses of trace elements (Cr, Co, Cu, Zn, Pb and V), about 100 mg powdered samples were decomposed by 0.5 ml-HF, 0.5 ml-HNO 3 and 1.0 ml-HClO 4 in a Teflon bomb at 160°C for 10 hours according to Sugitani et al (2002). Sample solution was evaporated to dryness, and residues were dissolved in 100 ml 1% HNO 3 solution.…”

Section: Chemical Analysesmentioning

confidence: 99%

Biogeochemical signatures preserved in ancient siliceous sediments; new perspectives to Triassic radiolarian bedded chert compositions

et al. 2006

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Major and minor elements of successively collected 70 Middle Triassic radiolarian bedded cherts from the Mino Belt in central Japan were studied. In order to reveal pre-diagenetic, primary geochemical signatures related to marine biogeochemical cycles, composite data of chert-shale couplets in addition to raw data were examined. The results show that Mn, Cu, Sr, Ba and P were supplied significantly by non-lithogenic excess fractions. Positive correlation with SiO 2 / TiO 2 suggests that accumulations of Ba, Sr, Mn and Cu were closely related to sedimentation of biogenic silica; Mn and Cu were probably incorporated into oxides, whereas Ba into barite. Relationship between SiO 2 /TiO 2 and excess-Ba, proxy for surface productivity implies that regeneration of silica from sinking radiolarian tests was not significant. This may have been caused by an expected relatively short travel time of radiolarian tests from the ocean surface to the bottom, reflecting their large size compared with diatoms. Positive correlations between CaO and P 2 O 5 imply that apatite species are host phases for P and Ca. Although conodont composed of apatite is abundant in both chert and shale, their CaO/P 2 O 5 ratio differs markedly from those of cherts and shales. Other apatite species, possibly carbonate apatite of diagenetic origin, are present in the bedded cherts and contribute to excess-P accumulation. Early diagenesis is believed to have modified only slightly primary geochemical features of the studied bedded cherts. This suggests relatively oxic depositional environment for the bedded cherts, under which regeneration of redox sensitive elements were not active.

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“…Due to the paucity of consistent data, the trace element data of the cherts are difficult to interpret (Murray, ), and there are few studies on the trace elements of cherts. Trace elements including Zr, Nb, Sc, Ga, Hf, and ΣREE are generally considered immobile during sedimentary processes and can represent the input of detrital material (Huang et al, ; Murray, ; Sugitani, Yamamoto, Wada, Binu‐Lal, & Yoneshige, ), showing strong positive correlations with Al 2 O 3 and TiO 2 . However, transition elements such as Cr, Ni, Cu, Zn, Pb, and V have weak positive correlations or no correlations with Al 2 O 3 and TiO 2 (Table ).…”

Section: Resultsmentioning

confidence: 99%

“…Due to the paucity of consistent data, the trace element data of the cherts are difficult to interpret (Murray, 1994), and there are few studies on the trace elements of cherts. Trace elements including Zr, Nb, Sc, Ga, Hf, and ΣREE are generally considered immobile during sedimentary processes and can represent the input of detrital material (Huang et al, 2013;Murray, 1994;Sugitani, Yamamoto, Wada, Binu-Lal, & Yoneshige, 2002),…”

Section: Trace and Rare Earth Elementsmentioning

confidence: 99%

Geochemical features of the Middle–Upper Permian cherts and implications for origin, depositional environment in the Sichuan Basin, SW China

Lin

Deng

et al. 2019

Geological Journal

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Permian cherts are widely developed in the Sichuan Basin and carry significant information about the evolution of the sedimentary environment. To understand the origins and depositional environments of the Middle–Upper Permian cherts in the Sichuan Basin, we studied the lithological and geochemical characteristics of the cherts. Based on field observations and thin section analysis, Permian cherts occur mainly in the form of nodular and bedded cherts. Nodular cherts present irregular lumps or tuberculous patterns and are composed of mostly cryptocrystalline and microcrystalline quartz with small amounts of carbonate mineral. Bedded cherts contain organic matter, and radiolarians can be found in Late Permian bedded cherts. The geochemical analysis of Permian cherts shows that the chert sources are complex; nodular Middle Permian cherts show hydrothermal and upwelling influences, with less terrestrial influence. Nodular chert is the product of diagenetic metasomatism, formed when silica‐rich fluids entered carbonate that was partially dissolved by H+ released from the oxidation of H2S. Bedded cherts of the Maokou Formation have the same source as nodular cherts but were deposited in a slope or depression of the platform, which was below the CaCO3 compensation depth (CCD) interface, so that bedded chert could be deposited directly. Bedded cherts of the Wujiaping Formation show influence from hydrothermal, biogenetic, and terrestrial sources and were deposited in a deeper water environment, such as basin or the bottom of slope. The Permian cherts in the Sichuan Basin are the response to the global Permian Chert Event (PCE), which was closely related to the Late Palaeozoic Ice Age (LPIA) and the global active volcanism during the Permian.

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Geochemistry of Archean carbonaceous cherts deposited at immature island-arc setting in the Pilbara Block, Western Australia

Cited by 23 publications

References 55 publications

Micrometer-scale chemical and isotopic criteria (O and Si) on the origin and history of Precambrian cherts: Implications for paleo-temperature reconstructions

Micrometer-scale chemical and isotopic criteria (O and Si) on the origin and history of Precambrian cherts: Implications for paleo-temperature reconstructions

Biogeochemical signatures preserved in ancient siliceous sediments; new perspectives to Triassic radiolarian bedded chert compositions

Geochemical features of the Middle–Upper Permian cherts and implications for origin, depositional environment in the Sichuan Basin, SW China

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