PECULIARITIES OF CHEMICAL COMPOSITION OF SKELETAL REMAINS OF CORAL FROM MIDDLE AND UPPER CARBONIFEROUS SEDIMENTS OF THE DONETS BASIN

Author(s):  
O. Bakhtarova ◽  
◽  
A. Pryvalov ◽  
2021 ◽  
Author(s):  
Dmitry Mikhailovich Lazutkin ◽  
Oleg Vladimirovich Bukov ◽  
Denis Vagizovich Kashapov ◽  
Albina Viktorovna Drobot ◽  
Maria Alexandrovna Stepanova ◽  
...  

Abstract New geological structures – displaced blocks of salt diapirs’ overburden – were identified in the axial part of the Dnieper-Donets basin (DDB) beside one of the largest salt domes due to modern high-precision gravity and magnetic surveys and their joint 3D inversion with seismic and well log data. Superposition of gravity lineaments and wells penetrating Middle and Lower Carboniferous below Permian and Upper Carboniferous sediments in proximity to salt allowed to propose halokinetic model salt overburden displacement, assuming Upper Carboniferous reactivation. Analogy with rafts and carapaces of the Gulf of Mexico is considered in terms of magnitude of salt-induced deformations. Density of Carboniferous rocks within the displaced flaps evidence a high probability of hydrocarbon saturation. Possible traps include uplifted parts of the overturned flaps, abutting Upper Carboniferous reservoirs, and underlying Carboniferous sequence. Play elements are analyzed using analogues from the Dnieper-Donets basin and the Gulf of Mexico. Hydrocarbon reserves of the overturned flaps within the study area are estimated to exceed Q50 (Р50) = 150 million cubic meters of oil equivalent.


2001 ◽  
Vol 158 (4) ◽  
pp. 733-736 ◽  
Author(s):  
MANFRED MENNING ◽  
DIETER WEYER ◽  
IMMO WENDT ◽  
NICHOLAS J. RILEY ◽  
VLADIMIR I. DAVYDOV

1994 ◽  
Vol 21 (1) ◽  
pp. 107-112 ◽  
Author(s):  
Pim F. van Bergen ◽  
Andrew C. Scott ◽  
Patrick J. Barrie ◽  
Jan W. de Leeuw ◽  
Margaret E. Collinson

2021 ◽  
Author(s):  
Tetiana Petrovska ◽  
Oleksandr Petrovskyy ◽  
Oksana Tsihovska ◽  
Andrii Trachuk

Abstract New geological structures - displaced blocks of salt diapirs’ overburden - were identified in the axial part of the Dnieper-Donets basin (DDB) beside one of the largest salt domes due to modern high-precision gravity and magnetic surveys and their joint 3D inversion with seismic and well log data. Superposition of gravity lineaments and wells penetrating Middle and Lower Carboniferous below Permian and Upper Carboniferous sediments in proximity to salt allowed to propose halokinetic model salt overburden displacement, assuming Upper Carboniferous reactivation. Analogy with rafts and carapaces of the Gulf of Mexico is considered in terms of magnitude of salt- induced deformations. Density of Carboniferous rocks within the displaced flaps evidence a high probability of hydrocarbon saturation. Possible traps include uplifted parts of the overturned flaps, abutting Upper Carboniferous reservoirs, and underlying Carboniferous sequence. Play elements are analyzed using analogues from the Dnieper-Donets basin and the Gulf of Mexico. Hydrocarbon reserves of the overturned flaps within the study area are estimated to exceed Q50 (P50) = 150 million cubic meters of oil equivalent.


1994 ◽  
Vol 42 (3) ◽  
pp. 340-349 ◽  
Author(s):  
Yannicke Dauphin ◽  
Casimir Kowalski ◽  
Christiane Denys

AbstractVariations in the proportions of the various groups of Rodentia collected from eight stratigraphic levels at Tighenif had previously been interpreted as representing environmental (climatic) changes. However, the processes involved in the formation of assemblages are still not well understood. Examination of fragmentation, crystallinity, and chemical composition of fossil bones and teeth, compared to recent samples, shows that a possible explanation for the variations in frequencies is the differential preservation of skeletal remains. Thus, the evaluation of postmortem effects is essential in determining the accuracy of the fossil record. The abundance and composition of remains are governed by the complex interaction of many factors. As indicated by actualistic studies, direct deductions from fauna lists must be avoided as much as possible.


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