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| 005 | 20231030040853.0 | ||
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| 100 | _a20160609a2015 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aUS | ||
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_aSpecific features of sedimentology in the outer part of the East Siberian Arctic Shelf _fO. V. Dudarev [et al.] |
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| 203 |
_aText _celectronic |
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| 300 | _aTitle screen | ||
| 330 | _aLithological investigations performed in the outer part of the East Siberian Arctic Shelf (ESAS) revealed specific features in the structure and distribution of bottom sediments in the studied area. Predominant type of sediments found in the uppermost layers of sediments was mud (that is silt and clay) with particle size <0.01 mm. This is typical for the outer shelves and reflects lowering energy of the depositional environment and sediment maturity towards the shelf break. However, in some areas within the ESAS outer shelf, we found poorly sorted sediments comprised of multiple grain sizes – from <0.01 mm (mud) to >1 mm (coarse sand). Some authors described existence of such areas in the outer part of the Laptev Sea shelf earlier without attributing such variability in sediment grain size to any processes. We hypothesize three possible mechanisms to explain intrusion of high energy processes into the low energy environment: 1) effect of geo-fluid and/or gas (methane) escape through open/deep taliks forming within subsea permafrost due to long-lasting warming by seawater and underlying fault zones (southern end of the Gakkel Ridge); 2) release of underground water through intra-permafrost hydraulic system; and 3) bottom erosion caused by ice-scouring. | ||
| 463 |
_tAGU Fall Meeting - 2015 _oabstracts, San Francisco, December 14-18, 2015 _v[C43A-0770] _d2015 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aседиментология | |
| 610 | 1 | _aарктический шельф | |
| 701 | 1 |
_aDudarev _bO. V. _cgeologist _cresearcher of Tomsk Polytechnic University, candidate of geological and mineralogical Sciences _f1955- _gOleg Viktorovich _2stltpush _3(RuTPU)RU\TPU\pers\35379 |
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| 701 | 1 |
_aGustafsson _bO. _gOrjan |
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| 701 | 1 |
_aSemiletov _bI. P. _cgeographer _cProfessor of Tomsk Polytechnic University, doctor of geographical Sciences _f1955- _gIgor Petrovich _2stltpush _3(RuTPU)RU\TPU\pers\34220 |
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| 701 | 1 |
_aShakhova _bN. E. _cgeologist _cProfessor of Tomsk Polytechnic University, doctor of geological-mineralogical Sciences _f1959- _gNataljya Evgenjevna _2stltpush _3(RuTPU)RU\TPU\pers\35374 |
|
| 701 | 1 |
_aTesi _bT. _gTommaso |
|
| 701 | 1 |
_aRuban _bA. S. _cgeologist _cengineer of Tomsk Polytechnic University _f1991- _gAleksey Sergeevich _2stltpush _3(RuTPU)RU\TPU\pers\34023 |
|
| 701 | 1 |
_aCharkin _bA. N. _cgeologist _cengineer-researcher of Tomsk Polytechnic University, candidate of geological and mineralogical Sciences _f1980- _gAleksandr Nikolaevich _2stltpush _3(RuTPU)RU\TPU\pers\35441 |
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| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет (ТПУ) _bИнститут природных ресурсов (ИПР) _bКафедра геологии и разведки полезных ископаемых (ГРПИ) _h2181 _2stltpush _3(RuTPU)RU\TPU\col\18660 |
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_aRU _b63413507 _c20170209 _gRCR |
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| 856 | 4 | _uhttps://agu.confex.com/agu/fm15/meetingapp.cgi/Paper/66772 | |
| 942 | _cCF | ||