Geochemical and detrital mode evidence for two sources of Early Proterozoic sedimentary rocks from the Tonto Basin Supergroup, central Arizona

Condie, Kent C.; Noll, P. D.; Conway, Clay M.

doi:10.1016/0037-0738(92)90103-x

Cited by 122 publications

(47 citation statements)

References 31 publications

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“…This correlation suggests that Ti is contained mainly in phyllosilicates (Dabard, 1990;Condie et al, 1992). In contrast to the Wakino sediments, the TiO 2 -Al 2 O 3 correlations in the sediments from the Kenseki and Sasayama basin are poor, suggesting that TiO 2 may be concentrated in other minerals such as black mafic rock fragments and oxides (e.g., ilmenite, rutile, and sphene).…”

Section: Mineral Controls On Major and Trace Element Distributionmentioning

confidence: 70%

“…Sasayama sediments, zircon is more important than clay/mica in housing all REE whereas for the Wakino sediments clay and mica are more important than zircon in housing REE (Condie et al, 1992). A moderate positive correlation of Th with total REE for the Lower Cretaceous sediments may indicate allanite-monazite control on REE (Condie et al, 1992).…”

Section: Mineral Controls On Major and Trace Element Distributionmentioning

confidence: 89%

“…A moderate positive correlation of Th with total REE for the Lower Cretaceous sediments may indicate allanite-monazite control on REE (Condie et al, 1992).…”

Section: Mineral Controls On Major and Trace Element Distributionmentioning

confidence: 99%

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Geochemistry of Lower Cretaceous sediments, Inner Zone of Southwest Japan. Constraints on provenance and tectonic environment.

et al. 2000

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A geochemical study was carried out on Lower Cretaceous sedimentary rocks of the Wakino Subgroup, Kenseki Formation, and Sasayama Group, distributed in the Inner Zone of Southwest Japan. The chemical characteristics of the Lower Cretaceous sediments indicate that these rocks are immature firstorder sediments derived from igneous and/or meta-igneous rocks of predominantly felsic composition. The sediments from the Kenseki Formation and the Sasayama Group, however, show high Cr and Ni abundances, suggesting a significant contribution of detritus from ultramafic rocks. Weathering at the source areas was moderate.The high Th/U ratios (mostly > 3.8), negative Eu anomalies (Eu/Eu* between 0.67 and 0.93) and Th/Sc ratios (mostly between 0.5 and 1) of the Lower Cretaceous sediments suggest their derivation dominantly from an old upper crust with minor amounts of young arc-derived detritus. The major, trace and rare earth element compositions imply that deposition took place in an active continental margin environment. The small amounts of young arc-derived material in the sediments support the inference by other workers that arc magmatism was not so prominent in Southwest Japan during the early Cretaceous.

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Section: Mineral Controls On Major and Trace Element Distributionmentioning

confidence: 70%

Section: Mineral Controls On Major and Trace Element Distributionmentioning

confidence: 89%

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Geochemistry of Lower Cretaceous sediments, Inner Zone of Southwest Japan. Constraints on provenance and tectonic environment.

et al. 2000

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“…8) does not show clear dif fer ences be tween the spec trum of the TiO 2 /Al 2 O 3 ra tios in the two sam ple suites. The mod er ate pos i tive cor re la tion be tween both abun dances of ox ides sug gests that Ti is in large part con tained in the phyllosilicates (Condie et al, 1992). The £RG show in gen eral a stron ger de ple tion in P 2 O 5 and MnO in com par i son to the KRG suite (Ap pen dix 2).…”

Section: Geochemical Composition Of the Greywackesmentioning

confidence: 99%

Geochemistry and petrology of the upper Silurian greywackes from the Holy Cross Mountains (Central Poland): implications for the Caledonian history of the southern part of the Trans-European Suture Zone (TESZ)

Kozłowski¹,

Domańska−Siuda²,

Nawrocki³

2014

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The Ludlovian greywackes of the Holy Cross Moun tains (HCM) rep re sent a part of the sed i men tary cover of the £ysogóry and Ma³opolska ter ranes lo cated in the Trans-Eu ro pean Su ture Zone, cen tral Po land. The rocks form the sed i men tary infill of the Cal edo nian fore land ba sin that de vel oped at the Tornquist mar gin of Laurussia and had source-ar eas lo cated on the orogen side of the ba sin. Un til the pres ent, the source terrane of the ba sin has not been iden ti fied in its po ten tial lo ca tion -at the south-west mar gin of the East Eu ro pean Plat form. The Ludlovian greywackes of both parts of the HCM show a lot of sim ilar i ties in clast spec trum, tim ing, and geo chem i cal fea tures, which im plies sim i lar sources of the clastic ma te rial. The petrographic modal com po si tion and geo chem i cal fea tures in di cate re cy cled orogen sig na tures with a dis tinct undissected, evolved mag matic arc com po nent. The lat ter is par tic u larly ev i dent from the extraclast spec trum that con tains an de site, trachyte and dacite clasts. Be side the vol ca nic rocks, the source area con sisted of sed i men tary and metasedimentary rocks with high amounts of cherts. The geo chem i cal and pet ro log i cal fea tures in the rock suc ces sion point to an evo lu tion of the tec tonic set ting from an ac tive to a more pas sive mar gin type in di cat ing synorogenic for ma tion of the stud ied rocks. Based on the rock re cord, we sug gest that the Up per Si lu rian greywackes orig i nated as a re sult of the col li sion of the Tornquist mar gin of Laurussia with a vol ca nic arc (here: the Teisseyre Arc) -lo cated prob a bly at the east ern most ex tent of the Avalonian Plate. In this sce nario, the arc-con ti nent orogen was com posed of an up lifted fill ing of the forearc ba sin, an accretionary prism, vol ca nic arc rocks, and an ex humed fore land base ment -anal o gously to the pres ent-day Tai wan orogen. The sec ond key is sue is the palaeo geo graphi cal re la tion be tween the Ma³opolska (Kielce Re gion) and the £ysogóry ter ranes in the Late Si lu rian. De spite the anal o gous grain com po si tion and clast types, the £ysogóry Re gion greywackes are com posed of distinctly more al tered de tri tus, which is in ac cor dance with the more dis tal char ac ter of the £ysogóry Ba sin. The lat ter is man ifested, e.g., in the lack of Cal edo nian de for ma tions. The pres ent-day ad ja cency of both do mains con tain ing cor re la tive greywacke for ma tions cou pled with con trast ing al ter ation and Late Si lu rian trans port di rec tions par al lel to the terrane boundary im ply small to me dium-scale (be low palaeomagnetic res o lu tion) left-lat eral move ments of the Ma³opolska and £ysogóry crustal blocks along the Holy Cross Fault in post-Si lu rian times.Key words: greywackes, prov e nance, arc-con ti nent col li sion, fore land, Si lu rian, Holy Cross Moun tains. INTRODUCTIONThe Trans-Eu ro pean Su ture Zone (TESZ) crosses Po land from the north-west to the south-east and sep...

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“…In general, the Ti content in the sediments is influenced by the composition of the source rock which contain Ti-bearing minerals (e.g., ilmenite and rutile) and the rate of chemical weathering, which is related to the dominant climate (Schroeder and Shiflet, 2000). The enrichment of titanium and aluminium and the strong positive correlation (r = 0.8) between the two elements could be attributed to the effect of chemical weathering and we suggest that Ti is contained mainly in phyllosilicates rather than Ti-bearing minerals (Condie et al, 1992). On the other hand, other major oxides were detected with relatively lower average concentrations compared to common shale composites and UCC.…”

Section: Factors Controlling Chemical Compositionmentioning

confidence: 81%

Mineralogical and chemical characteristics of Bajocian-Bathonian shales, G. Al-Maghara, North Sinai, Egypt: Climatic and environmental significance.

2003

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Clay mineral assemblages in relation to the chemical characteristics of Bajocian-Bathonian shales at G. Al-Maghara, North Sinai, Egypt, have been determined to infer the climatic conditions and the factors regulating their distribution. Mineralogical analyses using XRD revealed the dominance of kaolinite relative to illite and smectite. Quartz, calcite, goethite, feldspars and plagioclase represent the non-clay minerals encountered. Chemical data reflect the enrichment of chemically immobile elements (Al, Ti, Zr and Sc) and the depletion of mobile elements (Fe, Ca, Na, K and Mg). Major element concentrations reflect the dominant mineralogical composition and the weathering history of the source area. Moreover, the enrichment of trace elements (Sc, Zr and partially Cr) could be attributed to the source rock chemistry and its weathering history. High values of the Chemical Index of Alteration (CIA) (Al 2 O 3 /(Al 2 O 3 + CaO + K 2 O + Na 2 O) × 100) were found. The high proportion of kaolinite associated with the enrichments of immobile particularly major elements (Al and Ti) and the high values of CIA suggest intensive chemical weathering of the source rock under tropical to subtropical humid climatic conditions. The abundance of kaolinite relative to smectite was also influenced by hydraulic sorting and relative sea level changes.

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Geochemical and detrital mode evidence for two sources of Early Proterozoic sedimentary rocks from the Tonto Basin Supergroup, central Arizona

Cited by 122 publications

References 31 publications

Geochemistry of Lower Cretaceous sediments, Inner Zone of Southwest Japan. Constraints on provenance and tectonic environment.

Geochemistry of Lower Cretaceous sediments, Inner Zone of Southwest Japan. Constraints on provenance and tectonic environment.

Geochemistry and petrology of the upper Silurian greywackes from the Holy Cross Mountains (Central Poland): implications for the Caledonian history of the southern part of the Trans-European Suture Zone (TESZ)

Mineralogical and chemical characteristics of Bajocian-Bathonian shales, G. Al-Maghara, North Sinai, Egypt: Climatic and environmental significance.

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