Fluid evolution in the nepheline syenites of the Ditrău Alkaline Massif, Transylvania, Romania

Fall, András; Bodnar, Robert J.; Szabó, Csaba; Pál-Molnár, Elemér

doi:10.1016/j.lithos.2006.08.005

Cited by 45 publications

(47 citation statements)

References 37 publications

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“…Hydrothermal activity and mineralisation in the massif are already well known from previous studies (e.g. Fall et al, 2007;Kräutner and Bindea, 1998;Streckeisen and Hunziker, 1974). The unreasonably low initial Sr values, below mantle value, and high Rb content (and thus, higher Rb/Sr ratios) are probably due to hydrothermal alteration.…”

Section: Isotope Geochemistrysupporting

confidence: 56%

Petrogenetic significance of ocellar camptonite dykes in the Ditrău Alkaline Massif, Romania

Batki

Pál-Molnár

Dobosi

et al. 2014

Lithos

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Camptonite dykes intrude the rift-related Mesozoic igneous body of the Ditrău Alkaline Massif, Eastern Carpathians, Romania. We present and discuss mineral chemical data, major and trace elements, and the Nd isotopic compositions of the dykes in order to define their nature and origin. The dykes are classified as the clinopyroxene-bearing (camptonite-I) and clinopyroxene-free (camptonite-II) varieties. Camptonite-I consists of aluminian-ferroan diopside phenocrysts accompanied by kaersutite, subordinate Ti-rich annite, albite to oligoclase and abundant calcite-albite ocelli. Camptonite-II comprises K-rich hastingsite to magnesiohastingsite, Ti-rich annite, albite to andesine, abundant accessory titanite and apatite, and silicate ocelli filled mainly with plagioclase (An 4-34 ). A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT

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Section: Isotope Geochemistrysupporting

confidence: 56%

Petrogenetic significance of ocellar camptonite dykes in the Ditrău Alkaline Massif, Romania

Batki

Pál-Molnár

Dobosi

et al. 2014

Lithos

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“…Even though methane observed in primary inclusions could be of magmatic origin (Beeskow et al, 2006), the evidence presented in this paper suggests that the much more abundant hydrocarbon gases in secondary inclusions as well as the bitumen dispersed in the rocks are most likely of biotic origin. Fluid inclusion studies performed on other alkaline rocks show little evidence of hydrocarbons (Kryvdik et al, 2007;Fall et al, 2007). Thus, given the evidence that the vast majority of hydrocarbons in the alkaline rocks on the Kola Peninsula and in Southwest Greenland are biotic in origin and not magmatic as assumed previously, the arguments for migration of hydrocarbons from a deep magmatic source to form economic accumulations of oil and gas at shallower depths seem vanishingly small.…”

Section: Implication For the Deep Gas Hypothesismentioning

confidence: 79%

Bitumen biomarkers in the Mid-Proterozoic Ilímaussaq intrusion, Southwest Greenland – A challenge to the mantle gas theory

Laier

Nytoft

2012

Marine and Petroleum Geology

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“…The most notable REE mineralisation is associated with the c. 230 Ma Ditrãu Alkaline Complex in the Eastern Carpathians of Romania (Fig. 2) (Dallmeyer et al, 1997;Morogan et al, 2000;Fall et al, 2007). REE-rich mineral veins are found within the alkaline complex at Jolotca, and outside the complex at Belcina.…”

Section: Mesozoic Rifts: Alpine Tethys and Atlanticmentioning

confidence: 99%

Europe's rare earth element resource potential: An overview of REE metallogenetic provinces and their geodynamic setting

Goodenough

Schilling

Jönsson

et al. 2016

Ore Geology Reviews

270

136

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Security of supply of a number of raw materials is of concern for the European Union; foremost among these are the rare earth elements (REE), which are used in a range of modern technologies. A number of research projects, including the EURARE and ASTER projects, have been funded in Europe to investigate various steps along the REE supply chain. This paper addresses the initial part of that supply chain, namely the potential geological resources of the REE in Europe. Although the REE are not currently mined in Europe, potential resources are known to be widespread, and many are being explored. The most important European resources are associated with alkaline igneous rocks and carbonatites, although REE deposits are also known from a range of other settings. Within Europe, a number of REE metallogenetic belts can be identified on the basis of age, tectonic setting, lithological association and known REE enrichments. This paper reviews those metallogenetic belts and sets them in their geodynamic context. The most well-known of the REE belts are of Precambrian to Palaeozoic age and occur in Greenland and the Fennoscandian Shield. Of particular importance for their REE potential are the Gardar Province of SW Greenland, the Svecofennian Belt and subsequent Mesoproterozoic rifts in Sweden, and the carbonatites of the Central Iapetus Magmatic Province. However, several zones with significant potential for REE deposits are also identified in central, southern and eastern Europe, including examples in the Bohemian Massif, the Iberian Massif, and the Carpathians.

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Fluid evolution in the nepheline syenites of the Ditrău Alkaline Massif, Transylvania, Romania

Cited by 45 publications

References 37 publications

Petrogenetic significance of ocellar camptonite dykes in the Ditrău Alkaline Massif, Romania

Petrogenetic significance of ocellar camptonite dykes in the Ditrău Alkaline Massif, Romania

Bitumen biomarkers in the Mid-Proterozoic Ilímaussaq intrusion, Southwest Greenland – A challenge to the mantle gas theory

Europe's rare earth element resource potential: An overview of REE metallogenetic provinces and their geodynamic setting

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