| 000 | 03197nlm1a2200457 4500 | ||
|---|---|---|---|
| 001 | 662934 | ||
| 005 | 20231030041837.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\34102 | ||
| 090 | _a662934 | ||
| 100 | _a20210113a2020 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aThe Formation of Authigenic Carbonates at a Methane Seep Site in the Northern Part of the Laptev Sea _fA. S. Ruban, M. A. Rudmin, O. V. Dudarev, A. K. Mazurov |
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| 203 |
_aText _celectronic |
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| 300 | _aTitle screen | ||
| 320 | _a[References: 76 tit.] | ||
| 330 | _aAuthigenic carbonates from cold seeps are unique archives for studying environmental conditions, including biogeochemical processes associated with methane-rich fluid migration through the sediment column. The aim of this research was to study major oxide, mineralogical, and stable isotopic compositions of cold-seep authigenic carbonates collected in the northern part of the Laptev Sea. These carbonates are represented by Mg-calcite with an Mg content of 2% to 8%. The ?13C values range from ?27.5‰ to ?28.2‰ Vienna Peedee belemnite (VPDB) and indicate that carbonates formed due to anaerobic oxidation of methane, most likely thermogenic in origin. The authigenic pyrite in Mg-calcite is evidence of sulfate reduction during carbonate precipitation. The ?18O values of carbonates vary from 3.5‰ to 3.8‰ VPDB. The calculated ?18Ofluid values show that pore water temperature for precipitated Mg-calcite was comparable to bottom seawater temperature. The presence of authigenic carbonate in the upper horizons of sediments suggests that the sulfate–methane transition zone is shallowly below the sediment–water interface. | ||
| 461 | _tMinerals | ||
| 463 |
_tVol. 10, iss. 11 _v[948, 14 p.] _d2020 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aauthigenic carbonate | |
| 610 | 1 | _acold seep | |
| 610 | 1 | _aanaerobic methane oxidation | |
| 610 | 1 | _aoxygen and carbon isotopes | |
| 610 | 1 | _afluid source | |
| 610 | 1 | _aLaptev Sea | |
| 610 | 1 | _aокисление | |
| 610 | 1 | _aизотопы кислорода | |
| 610 | 1 | _aморе Лаптевых | |
| 701 | 1 |
_aRuban _bA. S. _cgeologist _cengineer of Tomsk Polytechnic University _f1991- _gAleksey Sergeevich _2stltpush _3(RuTPU)RU\TPU\pers\34023 |
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| 701 | 1 |
_aRudmin _bM. A. _cgeologist _cEngineer-researcher of Tomsk Polytechnic University _f1989- _gMaksim Andreevich _2stltpush _3(RuTPU)RU\TPU\pers\33254 |
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| 701 | 1 |
_aDudarev _bO. V. _gOleg Viktorovich |
|
| 701 | 1 |
_aMazurov _bA. K. _cgeologist _cProfessor of Tomsk Polytechnic University, Doctor sciences _f1951- _gAleksey Karpovich _2stltpush _3(RuTPU)RU\TPU\pers\30165 |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет _bИнженерная школа природных ресурсов _bОтделение геологии _h8083 _2stltpush _3(RuTPU)RU\TPU\col\23542 |
| 801 | 2 |
_aRU _b63413507 _c20210316 _gRCR |
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| 856 | 4 | _uhttp://earchive.tpu.ru/handle/11683/64781 | |
| 856 | 4 | _uhttps://doi.org/10.3390/min10110948 | |
| 942 | _cCF | ||