Gas sips in the NW Black Sea near the Kalanchak paleoBriver
The publication is based on a large body of data on gas outcrops in the northwest of the Black Sea, and in particular, the paleo-Kalanchak area. The material was obtained during the voyages carried out on the R/V of the Department of Marine Geology and Sedimentary Ore Formation of the National Ac...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Publisher House Akademperiodyka
2021-03-01
|
| Series: | Геологія і корисні копалини Світового океану |
| Subjects: |
| _version_ | 1797694902090334208 |
|---|---|
| author | Shnyukov Ye.F. |
| author_facet | Shnyukov Ye.F. |
| author_sort | Shnyukov Ye.F. |
| collection | DOAJ |
| description | The publication is based on a large body of data on gas outcrops in the northwest of the Black Sea, and
in particular, the paleo-Kalanchak area. The material was obtained during the voyages carried out on
the R/V of the Department of Marine Geology and Sedimentary Ore Formation of the National
Academy of Sciences of Ukraine, as well as data from literary sources.
More than 3000 methane sips were identified in the study area. The vast majority of gas emissions
in the area of paleoBriver Kalanchak, as well as in other areas of the northwestern sector of the Black
Sea, is confined to the upper part of the continental slope and the adjacent area of the shelf. Practically
it is a band 45 km wide on both sides of the shelf edge.
Seismic and acoustic profiles were studied in this article. Their analysis indicates that gas chimneys are not distributed randomly but concentrated in specific locations. A certain relationship
between the spatial distribution of methane outcrops on the seafloor and geomorphological structures,
as well as tectonic structure, primarily faults is traced.
Gas chimneys are associated with various forms of seafloor topography, but their greatest number
is located at the mouths of paleoBriver canyons. The article provides more detailed geomorphological
information of the paleoBriver network of the NW Black Sea.
In the estuarine canyon, gas emissions form along the sedimentary ridges, gas chimneys appear
at the bottoms of canyons, their peripheries, or near the dumps of submarine landslides, where the sedimentary cover is disturbed by mass transport. On the shelf, the greatest concentration of gas chimneys
is found in circular and elongated depressions (pockmarks). Based on the study of acoustic profiles, gas
chimneys of the PaleoBKalanchak part of the Black Sea were classified according to a few features: the
depth of location, height of gas release, gas flow capacity, form of gas release, mode of operation. The
results of the research are also presented in graphical materials (histograms of gas chimneys distribution by depth and height of gas discharge, map of sip location by the PaleoBKalanchak River area). |
| first_indexed | 2024-03-12T03:04:35Z |
| format | Article |
| id | doaj.art-e0dd74835e23477896c8b3f6e35cc4ba |
| institution | Directory Open Access Journal |
| issn | 1999-7566 2664-5947 |
| language | English |
| last_indexed | 2024-03-12T03:04:35Z |
| publishDate | 2021-03-01 |
| publisher | Publisher House Akademperiodyka |
| record_format | Article |
| series | Геологія і корисні копалини Світового океану |
| spelling | doaj.art-e0dd74835e23477896c8b3f6e35cc4ba2023-09-03T14:33:58ZengPublisher House AkademperiodykaГеологія і корисні копалини Світового океану1999-75662664-59472021-03-0117132510.15407/gpimo2021.01.003Gas sips in the NW Black Sea near the Kalanchak paleoBriverShnyukov Ye.F.0https://orcid.org/0000-0003-1173-2576MorGeoEkoCenter of NAS of Ukraine, KyivThe publication is based on a large body of data on gas outcrops in the northwest of the Black Sea, and in particular, the paleo-Kalanchak area. The material was obtained during the voyages carried out on the R/V of the Department of Marine Geology and Sedimentary Ore Formation of the National Academy of Sciences of Ukraine, as well as data from literary sources. More than 3000 methane sips were identified in the study area. The vast majority of gas emissions in the area of paleoBriver Kalanchak, as well as in other areas of the northwestern sector of the Black Sea, is confined to the upper part of the continental slope and the adjacent area of the shelf. Practically it is a band 45 km wide on both sides of the shelf edge. Seismic and acoustic profiles were studied in this article. Their analysis indicates that gas chimneys are not distributed randomly but concentrated in specific locations. A certain relationship between the spatial distribution of methane outcrops on the seafloor and geomorphological structures, as well as tectonic structure, primarily faults is traced. Gas chimneys are associated with various forms of seafloor topography, but their greatest number is located at the mouths of paleoBriver canyons. The article provides more detailed geomorphological information of the paleoBriver network of the NW Black Sea. In the estuarine canyon, gas emissions form along the sedimentary ridges, gas chimneys appear at the bottoms of canyons, their peripheries, or near the dumps of submarine landslides, where the sedimentary cover is disturbed by mass transport. On the shelf, the greatest concentration of gas chimneys is found in circular and elongated depressions (pockmarks). Based on the study of acoustic profiles, gas chimneys of the PaleoBKalanchak part of the Black Sea were classified according to a few features: the depth of location, height of gas release, gas flow capacity, form of gas release, mode of operation. The results of the research are also presented in graphical materials (histograms of gas chimneys distribution by depth and height of gas discharge, map of sip location by the PaleoBKalanchak River area).northwestern black seapaleokalanchakgas chimneys |
| spellingShingle | Shnyukov Ye.F. Gas sips in the NW Black Sea near the Kalanchak paleoBriver Геологія і корисні копалини Світового океану northwestern black sea paleokalanchak gas chimneys |
| title | Gas sips in the NW Black Sea near the Kalanchak paleoBriver |
| title_full | Gas sips in the NW Black Sea near the Kalanchak paleoBriver |
| title_fullStr | Gas sips in the NW Black Sea near the Kalanchak paleoBriver |
| title_full_unstemmed | Gas sips in the NW Black Sea near the Kalanchak paleoBriver |
| title_short | Gas sips in the NW Black Sea near the Kalanchak paleoBriver |
| title_sort | gas sips in the nw black sea near the kalanchak paleobriver |
| topic | northwestern black sea paleokalanchak gas chimneys |
| work_keys_str_mv | AT shnyukovyef gassipsinthenwblackseanearthekalanchakpaleobriver |