Chapter 4. Comparisons of ETAS Models on Global Tectonic Zones with Computing Implementation

2018 ◽  
pp. 136-159 ◽  
Keyword(s):  
Tectonic Zones

Division Features of Coal-Bearing Tectonic Units in North China

2015 ◽  
Vol 737 ◽  
pp. 827-830
Author(s):  
Kang Liu ◽  
Guo Hong Qin ◽  
Zhi Kai Ma
Keyword(s):  
North China ◽  
Tectonic Structure ◽  
Tectonic Zone ◽  
Coal Resources ◽  
Tectonic Zones ◽  
Potential Evaluation ◽  
Basic Characteristics

Based on the new round of national potential evaluation on coal resources, and reference to the latest achievements about regional geological and energy basins, this article analyzed the main features of North China coalfield structure. According to the main features of North China coalfield structure and the distribution of North China coal series, the boundary of North China coal-bearing tectonic region and the division of North China coal-bearing tectonic units were identified. North China coalfield tectonic region can be divided into 5 coal-bearing tectonic sub-regions and 22 coal-bearing tectonic zones. The basic characteristics of the tectonic structure and its influence upon coal series distribution in each coal-bearing tectonic zone were systemically discussed.

The relation of nontidal variations of gravity to recent crustal movements in two tectonic zones

1988 ◽  
Vol 9 (2-4) ◽  
pp. 335-342
Author(s):  
Yu.D. Boulanger ◽  
T.E. Demyanova ◽  
A.I. Volgina ◽  
L.A. Marakhovskaya
Keyword(s):  
Crustal Movements ◽  
Tectonic Zones

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.

scholarly journals Paleovalleys mapping using remote sensing

2014 ◽  
Vol XL-5 ◽  
pp. 83-86
Author(s):  
A.B. Baibatsha
Keyword(s):  
Remote Sensing ◽  
Groundwater Resources ◽  
Alluvial Deposits ◽  
North East ◽  
Digital Elevation ◽  
Landsat 7 ◽  
Tectonic Zones ◽  
Materials Used ◽  
Elevation Model ◽  
Digital Elevation Model Data

For work materials used multispectral satellite imagery Landsat (7 channels), medium spatial resolution (14,25–90 m) and a digital elevation model (data SRTM). For interpretation of satellite images and especially their infrared and thermal channels allocated buried paleovalleys pre-paleogene age. Their total length is 228 km. By manifestation of the content of remote sensing paleovalleys distinctly divided into two types, long ribbon-like read in materials and space survey highlights a network of small lakes. By the nature of the relationship established that the second type of river paleovalleys flogs first. On this basis, proposed to allocate two uneven river paleosystem. The most ancient paleovalleys first type can presumably be attributed to karst erosion, blurry chalk and carbon deposits foundation. Paleovalleys may include significant groundwater resources as drinking and industrial purposes. Also we can control the position paleovalleys zinc and bauxite mineralization area and alluvial deposits include uranium mineralization valleys infiltration type and placer gold. Direction paleovalleys choppy, but in general they have a north-east orientation, which is controlled by tectonic zones of the foundation. These zones are defined as the burial place themselves paleovalleys and position of karst cavities in areas interfacing with other structures orientation. The association of mineralization to the caverns in the beds paleovalleys could generally present conditions of formation of mineralization and carry it to the "Niagara" type. The term is obviously best reflects the mechanism of formation of these ores.

Origin of organic matter from tectonic zones in the Western Tatra Mountains Crystalline Basement, Poland: An example of bitumen—source rock correlation

2006 ◽  
Vol 23 (2) ◽  
pp. 261-279 ◽  
Author(s):  
Leszek Marynowski ◽  
Aleksandra Gawe¸da ◽  
Paweł Poprawa ◽  
Michał M. Zywiecki ◽  
Beata Ke¸pińska ◽  
...  
Keyword(s):  
Organic Matter ◽  
Source Rock ◽  
Crystalline Basement ◽  
Tatra Mountains ◽  
Tectonic Zones

scholarly journals Precambrian Tectonic Discontinuities in Western Laurentia: Broadband Seismological Perspectives on the Snowbird and Great Falls Tectonic Zones

Tectonics ◽  
2018 ◽  
Vol 37 (5) ◽  
pp. 1411-1434 ◽  
Author(s):  
Yu Jeffrey Gu ◽  
Yunfeng Chen ◽  
Ramin M. H. Dokht ◽  
Ruijia Wang
Keyword(s):  
Tectonic Zones

Shattered crust: how brittle deformation enables Critical Zone processes beneath southern Africa

2021 ◽  
Author(s):  
T. Dhansay
Keyword(s):  
Water Movement ◽  
Critical Zone ◽  
Upper Crust ◽  
Water Drainage ◽  
Structural Mapping ◽  
Groundwater Aquifers ◽  
Igneous Provinces ◽  
Tectonic Zones ◽  
Further Development ◽  
Earth’S Critical Zone

Abstract The delicate interplay of various Earth’s systems processes in the Critical Zone is vital in ensuring an equilibrium across the different spheres of life. The upper crust forms a thin veneer on the Earth’s surface that is defined by an interconnected network of brittle structures. These brittle structures enable various Earth System processes. Increased anthropogenic interactions within the very upper crust have seemingly resulted in a growing number of negative natural effects, including induced seismicity, mine water drainage and land degradation. Brittle structures across South Africa are investigated. These structures include various fractures and dykes of different ages and geodynamic evolutions. The orientation of these structures is compared to the underlying tectonic domains and their bounding suture zones. The orientations corroborate an apparent link between the formation of the brittle structures and the tectonic evolution of the southern African crust. Reactivation and the creation of new structures are also apparent. These are linked to the variability of the surrounding stress field and are shown to have promoted magmatism, e.g., Large Igneous Provinces, and the movement of hydrothermal fluids. These fluids were commonly responsible for the formation of important mineral deposits. The preferred structural orientations and their relationship to underlying tectonic zones are also linked to fractured groundwater aquifers. Subsurface groundwater displays a link to structural orientations. This comparison is extended to surficial water movement. Surface water movement also highlights an apparent link to brittle structures. The apparent correlation between these Earth’s systems processes and the interconnectivity developed by brittle structures are clear. This highlights the importance of high-resolution geological and structural mapping and linking this to further development of the Earth’s Critical Zone.

The formation and criteria of oil- and gas-bearing potential of hydrocarbon accumulations of the Western oil-gas region of Ukraine

2021 ◽  
Vol 1-2 (183-184) ◽  
pp. 14-44
Author(s):  
Myroslav Pavlyuk ◽  
Yaroslav Lazaruk ◽  
Volodymyr Shlapinsky ◽  
Olesya Savchak ◽  
Ivanna Kolodiy ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Saturation Pressure ◽  
Chemical Properties ◽  
Hydrocarbon Composition ◽  
Naphthenic Acids ◽  
Water Soluble ◽  
Integrated Analysis ◽  
Tectonic Zones ◽  
Natural Oil ◽  
Oil Gas

In the paper we have analysed hydrocarbon deposits of the Western region according to their belonging to the tectonic zones, stratigraphic complexes, types and depths of occurrence. The law-governed nature of alteration in physical-chemical properties of oil and gas, hydrogeological and geochemical peculiarities of productive thickness were studied, haloes of the distribution of gas of hydrocarbon and non-hydrocarbon composition outcrops of fluids were mapped. Problems of the formation of hydrocarbon accumulations were considered. According to the results of integrated analysis of different geological factors, besides the main factors of oil and gas presence – structure, reservoir, cover – additional criteria were proposed. In the direction to the deposit, the nitric-methane gases are changed into sufficiently methane and hydrocarbon-methane ones, and values of saturation pressure are comparable to the formation pressure. Indication of oil-gas presence are water-soluble organic matters of oil origin: bitumen, phenols, hydrocarbons, naphthenic acids as well as the presence of condensation waters or their mixture with formational waters. Probable indicators of hydrocarbon accumulations are sulfides of zinc, lead, copper in rocks. For the existence of the deposits the hydrogeological closing of the bowels is necessary: small velocities of the formational waters, their high mineralization, metamorphism intensity, chlorine-calcium type of waters. Natural oil-gas showings as a reflection of deposits that occur at a depth serve as criterion for estimation of prospects of the oil-gas presence in the open territories. The example of substation of prospecting objects is given according to criteria of the oil-gas presence in the platform autochthone under the overthrust of Pokuttia-Bukovyna Carpathians.

Rock Movement in Tectonic Zones. Mining Activities and Rock Pressure Management in the Norilsk-Kharaelakh Fault Area

2020 ◽  
pp. 148-151
Author(s):  
S.G. Kirillov ◽  
Z.G. Ufatova ◽  
I.F. Khrushchev ◽  
K.A. Bashirov
Keyword(s):  
Rock Mass ◽  
High Mobility ◽  
Mining Operations ◽  
Profile Line ◽  
Initial Stage ◽  
Tectonic Zones ◽  
Rock Movement ◽  
Hazard Level ◽  
And Control ◽  
The Impact

The article describes the rock mass state within the boundaries of the Skalistiy mining allotment. The ore mass within the mine field was found to preserve its rock-bump hazard and show high mobility in the impact zone of the Norilsk-Kharaelakh Fault and the associated high failure potential manifested as roof cavings. Based on the monitoring results along underground profile lines, it was concluded that the displacement process is currently at its initial stage. Moreover, the maximum subsidence in the central part of the profile line is about 3 times higher (up to 35 mm) than in other areas. This is caused by immediate proximity of this zone to the Norilsk-Kharaelakh Fault. Assessment of the bump hazard level of this rock mass with the help of the Prognoz-2 instrument that was performed by the rock-bump forecasting and control teams of the mine and the Norilskshakhtstroy company, showed the 'Not Hazardous' category in all cases. However, the progress of mining operations towards the Norilsk-Kharaelakh Fault may lead to deterioration in the condition of mine workings. This can be manifested through rock exfoliation from the walls of the advance workings of the safety layer in highly and extremely faulted rocks. In addition, permanent workings, which are one of the most critical structures of the production level and which will be used until the development of the deposit area adjacent to the Norilsk-Kharaelakh Fault is completed, will be maintained in increasingly difficult conditions. The article describes recommendations for mining operations in the fault area with account for the current mining and geomechanical situation and the potential for its change.

La tectonique recente du bassin de Marseille dans le cadre de l'evolution postmiocene du littoral mediterraneen francais

1967 ◽  
Vol S7-IX (4) ◽  
pp. 549-560
Author(s):  
Eugene Bonifay
Keyword(s):  
Structural Features ◽  
Tectonic Zones

Abstract Plio-Pleistocene epeirogeny and tectonism, tectonic zones, structural features, terrace levels

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