scholarly journals Shallow and Deep Temperatures in the South-Caspian Basin

2018 ◽  
Vol 1 (1) ◽  
pp. 23-29
Author(s):  
Abdulvahab Sharif Mukhtarov
Keyword(s):  
Sedimentary Cover ◽  
Temperature Data ◽  
The Other ◽  
Temperature Fields ◽  
Local Temperature ◽  
Caspian Basin ◽  
The South ◽  
South Caspian Basin ◽  
Near Surface ◽  
North West

Distribution of shallow and deep temperatures in the sedimentary cover of the South Caspian Basin (SCB) is addressed. Analysis of soil temperature data recorded in meteostations of Azerbaijan and its neighboring regions provide clues as to the temperatures at near surface layers.  Such layers, where seasonal variations of temperatures converge to near-stable values have been designated as the “neutral” layer. In many localities, the bottom parts of such layers extend to depths of around 20 m. In addition, temperature data of over 150 wells, obtained from depths varying from 100 to 6000 m in oil and gas bearing areas of Azerbaijan have been used in assessment of deep temperatures. Data bases were generated for study of lateral temperature fields (in other words, geothermal sections) at depths of 500, 1000, 2000, 3000, 4000, 5000, 6000 and 7000 meters. The results reveal that low temperature areas extend from the north-west to south-east and covers low-lying areas of SCB. Thus, local temperature minimums (30-35°С) are found in Neftchala area, the other larger temperature minimum (35-40°С) covers the structures of Dyvanni-deniz and Here-Zire adasy and expands along the strip Khamamdag deniz, Garasu, Sangi Mugan, Aran deniz. On the other hand, local temperature maximums are observed along the Kura Depression: in Ajinour area with an amplitude of 80°С; to the west of Kyurdamir in Sorsor and Amirarkh areas with an amplitude of 65-70°С; in Sarkhanbeyli-Garabagly-Kyurovdag areas with an amplitude of 60-65°С.

Geologic-geochemical and modelling studies of hydrocarbon migration in the South Caspian basin

2020 ◽  
pp. 4-15
Author(s):  
M.F. Tagiyev ◽  
◽  
I.N. Askerov ◽  
◽  
◽  
...  
Keyword(s):  
Sedimentary Cover ◽  
Geochemical Data ◽  
Caspian Basin ◽  
Hydrocarbon Generation ◽  
The South ◽  
South Caspian Basin ◽  
Hydrocarbon Migration ◽  
Upward Migration ◽  
Modelling Studies ◽  
Hydrocarbon Charge

Based on pyrolysis data an overview is given on the generative potential and maturity of individual stratigraphic units in the South Caspian sedimentary cover. Furthermore, the pyrolysis analyses indicate that the Lower Pliocene Productive Series being immature itself is likely to have received hydrocarbon charge from the underlying older strata. The present state of the art in studying hydrocarbon migration and the "source-accumulation" type relationship between source sediments and reservoired oils in the South Caspian basin are touched upon. The views of and geochemical arguments by different authors for charging the Lower Pliocene Productive Series reservoirs with hydrocarbons from the underlying Oligocene-Miocene source layers are presented. Quantitative aspects of hydrocarbon generation, fluid dynamics, and formation of anomalous temperature & pressure fields based on the results of basin modelling in Azerbaijan are considered. Based on geochemical data analysis and modelling studies, as well as honouring reports by other workers the importance and necessity of upward migration for hydrocarbon transfer from deep generation centers to reservoirs of the Productive Series are shown.

Distribution and volume of rocks in sedimentary basins – unusual case of the South Caspian basin

2020 ◽  
pp. 7-13
Author(s):  
I.S. Guliyev ◽  
◽  
N.R. Abdullayev ◽  
Sh.M. Huseynova ◽  
◽  
...  
Keyword(s):  
Unusual Case ◽  
Sedimentary Cover ◽  
Sedimentary Basins ◽  
Caspian Basin ◽  
The South ◽  
South Caspian Basin ◽  
Lithospheric Thickness ◽  
The Earth ◽  
Unique Nature ◽  
Sedimentary Layer

The article gives a brief overview of the sedimentary cover of the Earth and summarizes volumes and mass of sediments contained in the Earth sedimentary layer (stratisphere). Using available data authors show unique nature of the South Caspian Basin and other rapidly subsiding basins with large amount of sediments and attenuated crust. Sedimentary, crustal and lithospheric thickness correlations are discussed.

scholarly journals Crustal density structure of the northwestern Iranian Plateau

2019 ◽  
Vol 56 (12) ◽  
pp. 1347-1365 ◽  
Author(s):  
Vahid Teknik ◽  
Abdolreza Ghods ◽  
Hans Thybo ◽  
Irina M. Artemieva
Keyword(s):  
High Density ◽  
Central Iran ◽  
P Wave ◽  
Arabian Plate ◽  
Scale Model ◽  
Moho Depth ◽  
Caspian Basin ◽  
The South ◽  
South Caspian Basin ◽  
Iranian Plateau

We present a new 2D crustal-scale model of the northwestern Iranian plateau based on gravity–magnetic modeling along the 500 km long China–Iran Geological and Geophysical Survey in the Iranian plateau (CIGSIP) seismic profile across major tectonic provinces of Iran from the Arabian plate into the South Caspian Basin (SCB). The seismic P-wave receiver function (RF) model along the profile is used to constrain major crustal boundaries in the density model. Our 2D crustal model shows significant variation in the sedimentary thickness, Moho depth, and the depth and extent of intra-crustal interfaces. The Main Recent Fault (MRF) between the Arabian crust and the overriding central Iran crust dips at approximately 13° towards the northeast to a depth of about 40 km. The geometry of the MRF suggests about 150 km of underthrusting of the Arabian plate beneath central Iran. Our results indicate the presence of a high-density lower crustal layer beneath Zagros. We identify a new crustal-scale suture beneath the Tarom valley between the South Caspian Basin crust and Central Iran and the Alborz. This suture is associated with sharp variation in Moho depth, topography, and magnetic anomalies, and is underlain by a 20 km thick high-density crustal root at 35–55 km depth. The high-density lower crust in Alborz and Zagros may be related to partial eclogitization of crustal roots below about 40 km depth. The gravity and magnetic models indicate a highly extended continental crust for the SCB crust along the profile. Low observed magnetic susceptibility of the Kermanshah ophiolites likely indicates that the ophiolite rocks only form a thin layer that has been thrust over the sedimentary cover.

scholarly journals Deep structure of the Anapa flexural-rupture zone, Western Caucasus

2019 ◽  
pp. 3-11
Author(s):  
E. A. Rogozhin ◽  
A. V. Gorbatikov ◽  
Yu. V. Kharazova ◽  
M. Yu. Stepanova ◽  
J. Chen ◽  
...  
Keyword(s):  
Deep Structure ◽  
Sedimentary Cover ◽  
Western Caucasus ◽  
Tectonic Structures ◽  
Deep Roots ◽  
Near Surface ◽  
North West ◽  
The North ◽  
Deep Faults ◽  
Tectonic Zones

In the period from 2007 to 2017 complex geological and geophysical studies were carried out in the three largest flexural-rupture fault zones in the North-West Caucasus (Anapa, Akhtyrka and Moldavan). The micro-seismic sounding (MSM) was used as the main geophysical method. Studies with the help of MSM allowed us to identify the features of the deep structure of the earth’s crust in the study area and to associate them with specific tectonic structures on the surface.The binding was carried out by harmonizing the results of the MSM and the parameters of the section of the sedimentary cover and crustal boundaries according to the drilling data and the work previously performed by the reflected wave method (MOVZ). It was found that the Anapa flexure and longitudinal tectonic zones have clear deep roots, and also separate the pericline of the North-Western Caucasus from the Taman Peninsula and from the lowered blocks of the Northern slope of the folded system.Faults in the study area are divided into: (1) deep faults of the Caucasian stretch, penetrating into the lower crust and even to the upper mantle, and (2) near-surface faults, do not extend to the depths beyond the thickness of the sedimentary cover. The seismogenic role of these tectonic disturbances in the studied seismically active region has been determined.

Sedimentation in a discharge dominated fluvial-lacustrine system: the Neogene Productive Series of the South Caspian Basin, Azerbaijan

2004 ◽  
Vol 21 (5) ◽  
pp. 613-638 ◽  
Author(s):  
D.J Hinds ◽  
E Aliyeva ◽  
M.B Allen ◽  
C.E Davies ◽  
S.B Kroonenberg ◽  
...  
Keyword(s):  
Caspian Basin ◽  
The South ◽  
South Caspian Basin
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