Journal ArticleDOI
Diagenetic evolution of the upper Devonian phosphorites, Alborz Mountain Range, northern Iran
TLDR
In this article, the authors focused mainly on the post-depositional changes that occurred during shallow to deep burial diagenetic evolution and subaerial weathering of the Geirud Formation in the Alborz Mountain Range, north of Iran.About:
This article is published in Sedimentary Geology.The article was published on 2018-11-15. It has received 12 citations till now. The article focuses on the topics: Diagenesis & Illite.read more
Citations
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Journal ArticleDOI
Rare Earth elements in rocks and soil profiles of a tropical volcanic archipelago in the Southern Atlantic
Marina Monteiro Feitosa,Ygor Jacques Agra Bezerra da Silva,Caroline Miranda Biondi,Vanja Coelho Alcantara,Clístenes Williams Araújo do Nascimento +4 more
TL;DR: In this paper, the authors collected nine soil profiles to study the parent materials' petrography and the chemistry of soils from the archipelago to interpret the signature and fractionation of rare earth elements (REEs) in soils along a volcanic lithosequence.
Journal ArticleDOI
Llandovery (lower Silurian) nodular barite from the northern margin of Yangtze Block, South China, and its paleoceanographic implications
TL;DR: The first oxygenation event appears to occur near the Rhuddanian-Aeronian stages boundary in the early Silurian and was marked by the interruption of widespread oceanic anoxia and associated oxygenation of seawater as mentioned in this paper.
Journal ArticleDOI
Origin of Phosphate‐bearing Carbonate Concretions in the Upper Triassic Lacustrine Black shales of the Southern Ordos Basin, China
Long Zhang,Long Zhang,Chiyang Liu,Dongdong Zhang,Shaodong Qu,Huanhuan Ma,Chong Jiang,Kaiyu Lei +7 more
TL;DR: In this article, the authors studied the genesis and growth processes of carbonate concretions in the Yanchang Formation of the southern Ordos Basin and found that the carbonate structures are composed of calcite, phosphate fossil fragments, K-NH4-feldspar, quartz, bitumen, and minor Fedolomite.
Journal ArticleDOI
Geochemical Characteristics of Dolomitic Phosphorite Containing Rare Earth Elements and Its Weathered Ore
TL;DR: In this paper, the geochemical and mineralogical characteristics of primary and weathered phosphorites were investigated to provide a good theoretical guidance for the development and utilization of weathered phorite resources.
References
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The continental crust: Its composition and evolution
TL;DR: In this paper, the authors describe the composition of the present upper crust and deal with possible compositions for the total crust and the inferred composition of lower crust, and the question of the uniformity of crustal composition throughout geological time is discussed.
Journal ArticleDOI
Towards a paleogeography and tectonic evolution of Iran
TL;DR: In this paper, maps of the paleography of Iran are presented to summarize and review the geological evolution of the Iranian region since late Precambrian time on the basis of the data presented in this way reconstructions of the region have been prepared that take account of the known major movements of continental masses.
Book
Sand and sandstone
TL;DR: A new, second edition of a classical textbook in sedimentology, petrology, and petrography of sand and sandstones has been published by as discussed by the authors, which has been extensively revised and updated.
Journal ArticleDOI
Structural History and Tectonics of Iran: A Review
TL;DR: The structural development of the Iranian ranges has certain peculiarities which contradict the conventional geosynclinal theory of mountain building as mentioned in this paper, and the conventional tripartite division of Iran into an extensive median mass and two bordering ranges of geosyclinal origin (Zagros, Alborz) cannot be maintained.
Journal ArticleDOI
Mechanism of burial metamorphism of argillaceous sediment: 1. Mineralogical and chemical evidence
TL;DR: In this paper, a detailed mineralogical and chemical investigation of shale cuttings from a well (Case Western Reserve University Gulf Coast 6) in Oligocene-Miocene sediment of the Gulf Coast of the United States was made by x-ray diffraction.
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