Geothermal characteristics of the Vorotilovo deep borehole drilled into the Puchezh-Katunk impact structure

Popov, Y.; Pimenov, V.; Pevzner, L. A.; Romushkevich, R.; Popov, Evgenii Yu.

doi:10.1016/s0040-1951(98)00041-9

Cited by 26 publications

(36 citation statements)

References 3 publications

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“…Investigations performed in recent years at the Vorotilovo scientific deep well drilled in the Puchezh‐Katunk impact structure, Russia [ Popov et al , 1998], and at the Nördlingen‐1973 scientific well drilled in the Ries impact structure, Germany [ Popov et al , 2003a], demonstrated (1) low thermal anisotropy of rocks (brecciated, cataclased, thermally overprinted and shock transformed target rocks) and (2) low values of thermal conductivity, density and velocity in the rocks affected by the shock and postshock thermal conditions [ Schmitt et al , 2007] in comparison with similar rocks outside these impact structures.…”

Section: Introductionmentioning

confidence: 99%

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Integrated interpretation of physical properties of rocks of the borehole Yaxcopoil‐1 (Chicxulub impact structure)

et al. 2008

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[1] The borehole Yaxcopoil-1, drilled within the Chicxulub meteoritic impact structure (Mexico), was completely cored from 404 to 1511 m through postimpact Tertiary limestones underlain by impactites. The impactites comprise impact melt-rich, suevitic breccia followed by megablocks of Cretaceous limestones, calcarenites, dolomites, and anhydrites. Measurements of porosity, density, and thermal parameters on 450 samples (equidistant sampling, complete depth range) and of ultrasonic velocities and electric resistivity on 80 representative samples are used to investigate the physical properties of carbonate rocks and to study the influence of the impact. Experiments under elevated pressure, calculations using frequency-dependent Biot-Gassmann theory, and crosschecking with borehole logs, where available, show that ultrasonic laboratory and sonic in situ data correspond. Sonic and electric quasi-continuous logs are obtained from empirical correlations with thermal conductivity, density, and porosity and consideration of mineralogical composition and microstructure. These data give constraints on interpretation and geophysical modeling of, e.g., seismic and gravity data. In the Tertiary postimpact limestone section, the rock fabric (porosity) influences the physical properties. The upper boundary of the impactites is distinctly determined by the high inhomogeneity factor and anisotropy coefficient of thermal conductivity and by the temperature gradient from high-resolution borehole temperature measurements. All physical properties indicate that the upper part of the suevitic breccia can be distinguished from the lower suevite unit. In the Cretaceous megablocks, a high variability of all properties (particularly, thermal conductivity, density of solid material, and temperature gradient) due to the high variability in the mineral composition (calcite, dolomite, anhydrite) is observed.

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Section: Introductionmentioning

confidence: 99%

“…These peculiarities may be typical of impact structures in general and can be caused by mechanical damage and the shock‐induced thermal metamorphism of rocks [e.g., Popov et al , 1998, 2003a; Vermeesch and Morgan , 2004]. Nevertheless, this question can only be answered by taking into account the lithology of the impact structures.…”

Section: Introductionmentioning

confidence: 99%

Integrated interpretation of physical properties of rocks of the borehole Yaxcopoil‐1 (Chicxulub impact structure)

et al. 2008

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“…Since the 1990s, the optical scanning technique [15] was widely applied to measurements of rock thermal conductivity, which has advantages such as high work efficiency, non contact manner, direct measurements on rock-cores (no need to make samples) and being able to estimate anisotropy and inhomogeneity of rocks. So far the successful cases of its utility includes the Vorotilovo deep borehole at the East Europe platform [28] , deep borehole at the Kola peninsula of Russia [29] , and deep borehole at the Sulu-Dabie area of China [30] .…”

Section: Measurement Methods Of Rock Thermal Conductivitymentioning

confidence: 99%

Characteristics of Heat Flow and Lithospheric Thermal Structure in the Junggar Basin, Northwestern China

Rao

Zhu

et al. 2013

Chinese J of Geophysics

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Characteristics of present-day heat flow and thermal structure of lithosphere in basins are essential constraints to reveal the tectonic-thermal evolution process and to reconstruct thermal history of the basins, which are of great significance for research of basin dynamics and evaluation of petroleum resources. This work is based on 11 newly measured high-quality heat flow values from well-log temperature data in 102 boreholes, oil-test temperature data in over 400 new boreholes, and thermal conductivity data of 187 samples from 15 wells measured by optical scanning in the Junggar basin. Our purpose is to analyze features of heat flow and reveal thermal structure of lithosphere in this basin. The results show current geotemperature gradients between 11.6∼27.6 • C/km, 21.3±3.7• C/km on average; and surface heat flow between 23.4∼56.1 mW/m 2 ; 42.5±7.41 mW/m 2 on average; which imply a cold basin with low geotemperature gradients and low heat flow. These values in the Junggar basin are distributed in largely consistent patterns, primarily controlled by the structural shape of the basement. They are the highest at the uplift in the east, next at the Luliang uplift, relatively low in the Wulungu depression, central depression, and the uplift in the west, and lowest in the range-front depression of the North TianShan. Beneath the Junggar basin, the crustal heat flow is 18.8∼26.0 mW/m 2 , mantle heat flow 16.5∼23.7 mW/m 2 , the ratio of the former to the latter is 0.79∼1.58, indicative of a thermal structure of cold crust and cold mantle. The distribution of mantle heat flow values accords with topography of the Moho interface, which are high below uplifts and low beneath depressions in the basin.

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“…To obtain information on changes of vertical variations of the conductive component of heat flow density due to the impact, uniquely combined petrophysical and geothermal investigations have been carried out by our group on four impact structures: the Puchezh–Katunki impact structure (Vorotilovo borehole, Russia; Popov et al. ), the Ries impact structure (the Noerdlingen‐73 borehole, Germany; Popov et al. ), the Chicxulub structure (the Yaxcopoil‐1 borehole, Mexico; Popov et al.…”

Section: Introductionmentioning

confidence: 99%

“…); the rock anisotropy was taken into account at these measurements (Popov et al. , , , ; Mayr et al. , ).…”

Section: Introductionmentioning

confidence: 99%

Comparison of petrophysical properties of impactites for four meteoritic impact structures

Popov

Mayr

Romushkevich

et al. 2014

Meteorit & Planetary Scien

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Abstract-We reanalyzed and compared unique data sets, which we obtained in the frame of combined petrophysical and geothermal investigations within scientific drilling projects on four impact structures: the Puchezh-Katunki impact structure (Vorotilovo borehole, Russia), the Ries impact structure (Noerdlingen-73 borehole, Germany), the Chicxulub impact structure (ICDP Yaxcopoil-1 borehole, Mexico), and the Chesapeake impact structure (ICDP-USGS-Eyreville borehole, USA). For a joined interpretation, we used the following previously published data: thermal properties, using the optical scanning technique, and porosities, both measured on densely sampled halfcores of the boreholes. For the two ICDP boreholes, we also used our previously published P-wave velocities measured on a subset of cores. We show that thermal conductivity, thermal anisotropy, porosity, and velocity can be correlated with shock metamorphism (target rocks of the Puchezh-Katunki and Ries impact structures), and confirm the absence of shock metamorphism in the samples taken from megablocks (Chicxulub and Chesapeake impact structure). The physical properties of the lithic impact breccias and suevites are influenced mainly by their impact-related porosity. Physical properties of lower porosity lithic impact breccias and suevites are also influenced by their chemical composition. These data allow for a distinction between different types of breccias due to differences concerning the texture and chemistry and the different amounts of melt and rock clasts.

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Geothermal characteristics of the Vorotilovo deep borehole drilled into the Puchezh-Katunk impact structure

Cited by 26 publications

References 3 publications

Integrated interpretation of physical properties of rocks of the borehole Yaxcopoil‐1 (Chicxulub impact structure)

Integrated interpretation of physical properties of rocks of the borehole Yaxcopoil‐1 (Chicxulub impact structure)

Characteristics of Heat Flow and Lithospheric Thermal Structure in the Junggar Basin, Northwestern China

Comparison of petrophysical properties of impactites for four meteoritic impact structures

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