Gas fire from mud volcanoes as a trigger for the appearance of high-temperature pyrometamorphic rocks of the Hatrurim Formation (Dead Sea area)

Sokol, Ella V.; Novikov, I.S.; Vapnik, Ye.; Sharygin, Victor V.

doi:10.1134/s1028334x07030348

Cited by 40 publications

(24 citation statements)

References 4 publications

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“…It is also the type locality for a few new minerals such as: vapnikite, Ca 3 UO 6 [27] [32]. Larnite-bearing rocks, which were formed during spontaneous combustion metamorphism of bituminous chalks and marls from the Ghareb and Taqiye Formations [33][34][35][36], were collected during fieldworks in 2015. Detailed geological description of the Jabel Harmun locality and the main hypotheses of the Hatrurim Complex formation were described by Galuskina et al [28].…”

Section: Introductionmentioning

confidence: 99%

Sharyginite, Ca3TiFe2O8, A New Mineral from the Bellerberg Volcano, Germany

et al. 2018

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Abstract:The new mineral sharyginite, Ca 3 TiFe 2 O 8 (P2 1 ma, Z = 2, a = 5.423(2) Å, b = 11.150(8) Å, c = 5.528(2) Å, V = 334.3(3) Å 3 ), a member of the anion deficient perovskite group, was discovered in metacarbonate xenoliths in alkali basalt from the Caspar quarry, Bellerberg volcano, Eifel, Germany. In the holotype specimen, sharyginite is widespread in the contact zone of xenolith with alkali basalt. Sharyginite is associated with fluorellestadite, cuspidine, brownmillerite, rondorfite, larnite and minerals of the chlormayenite-wadalite series. The mineral usually forms flat crystals up to 100 µm in length, which are formed by pinacoids {100}, {010} and {001}. Crystals are flattened on (010). Sharyginite is dark brown, opaque with a brown streak and has a sub-metallic lustre. In reflected light, it is light grey and exhibits rare yellowish-brown internal reflections. The calculated density of sharyginite is 3.943 g·cm -3 . The empirical formula calculated on the basis of 8 O apfu is Ca 3.00 (Fe 3+ octahedra, which are separated by single layers of (Fe 3+ O 4 ) tetrahedra. We suggest that sharyginite formed after perovskite at high-temperature conditions >1000 • C.

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Section: Introductionmentioning

confidence: 99%

Sharyginite, Ca3TiFe2O8, A New Mineral from the Bellerberg Volcano, Germany

et al. 2018

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“…It occurred to us that the range of processes we had inferred may at least partly be related to the process termed mud volcanism (Vapnik et al, 2006Sokol et al, 2007Sokol et al, , 2008Novikov et al, 2013). We visualize a continuous process, which occurred in a number of local foci and was accompanied by numerous gas explosions and hydrothermal alteration.…”

Section: Introductionmentioning

confidence: 88%

Geophysical Studies of Pyrometamorphic and Hydrothermal Rocks of the Nabi Musa Mottled Zone, Vicinity of the Dead Sea Transform, Israel

Vapnik¹

2015

Coal and Peat Fires: A Global Perspective

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“…At hilltops, monolithic larnite rocks make up separate isometric massive blocks, plates or cliff scarps, up to 50 m across and 10 m thick [1,2,5,26,30]. Descriptions of individual bodies of these rocks is given in [1][2][3][4][5]26,30,[59][60][61][62][63][64].…”

Section: Brief Geological Background For Haturim Basinmentioning

confidence: 99%

“…complexes to local breakthrough and ignition of high-calorific hydrocarbon gases, mainly methane, which may result from mud volcanism [4,5,26,30,52,59,60,63,64,69,70]. Emissions of hydrocarbon gases in the geological past left imprint in abundant foci of high-(800-1100 • C) and ultrahigh-temperature (1200-1500 • C) combustion metamorphism of sediments in the Hatrurim Basin and other MZ localities [26,30,59,60,63,64]. Burning of high-calorific fossil fuel released enough heat to maintain CM alteration and local melting of marly sediments.…”

Section: Brief Geological Background For Haturim Basinmentioning

confidence: 99%

Nataliakulikite, Ca4Ti2(Fe3+,Fe2+)(Si,Fe3+,Al)O11, a New Perovskite-Supergroup Mineral from Hatrurim Basin, Negev Desert, Israel

et al. 2019

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Nataliakulikite, Ca4Ti2(Fe3+,Fe2+)(Si,Fe3+,Al)O11, is a mineral intermediate between perovskite CaTiO3 and brownmillerite Ca2(Fe,Al)2O5. It was discovered as a minor mineral in a high-temperature pyrometamorphic larnite-gehlenite rock at the Nahal Morag Canyon of the Hatrurim Basin, Israel. Nataliakulikite is associated with larnite, flamite, gehlenite, magnesioferrite, Fe3+-rich perovskite, fluorapatite, barite, Hashemite, and retrograde phases (afwillite, hillebrandite, portlandite, calcite, ettringite, hydrogarnet, and other hydrated Ca-silicates). The mineral forms brown subhedral or prismatic grains (up to 20 µm) and their intergrowths (up to 50 μm). Its empirical formula (n = 47) is (Ca3.992Sr0.014U0.004)(Ti1.933Zr0.030Nb0.002) (Fe3+0.610Fe2+0.405Cr0.005Mn0.005)(Si0.447Fe3+0.337Al0.216)O11 and shows Si predominance in tetrahedral site. The unit-cell parameters (HRTEM data) and space group are: a = 5.254, b = 30.302, c = 5.488 Å, V = 873.7 Å3, Pnma, Z = 4. These dimensions and Electron backscatter diffraction (EBSD) data strongly support the structural identity between nataliakulikite and synthetic Ca4Ti2Fe3+2O11 (2CaTiO3∙Ca2Fe3+2O5), an intermediate compound in the system CaTiO3-Ca2Fe3+2O5. In general, this mineral is a Si-Fe2+-rich natural analog of synthetic Ca4Ti2Fe3+2O11. The X-ray powder diffraction data (CuKα -radiation), calculated from unit-cell dimensions, show the strongest lines {d [Å], (Icalc)} at: 2.681(100), 1.898(30), 2.627(26), 2.744(23), 1.894(22), 15.151(19), 1.572(14), 3.795(8). The calculated density is 4.006 g/cm3. The crystal structure of nataliakulikite has not been refined because of small sizes of grains. The Raman spectrum shows strong bands at 128, 223, 274, 562, and 790 cm−1. Nataliakulikite from the Hatrurim Basin crystallized under the conditions of combustion metamorphism at high temperatures (1160–1200 °C) and low pressures (HT-region of the spurrite-merwinite facies).

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Gas fire from mud volcanoes as a trigger for the appearance of high-temperature pyrometamorphic rocks of the Hatrurim Formation (Dead Sea area)

Cited by 40 publications

References 4 publications

Sharyginite, Ca3TiFe2O8, A New Mineral from the Bellerberg Volcano, Germany

Sharyginite, Ca3TiFe2O8, A New Mineral from the Bellerberg Volcano, Germany

Geophysical Studies of Pyrometamorphic and Hydrothermal Rocks of the Nabi Musa Mottled Zone, Vicinity of the Dead Sea Transform, Israel

Nataliakulikite, Ca4Ti2(Fe3+,Fe2+)(Si,Fe3+,Al)O11, a New Perovskite-Supergroup Mineral from Hatrurim Basin, Negev Desert, Israel

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