- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Asia
-
Central Asia
-
Caspian Depression (1)
-
Kazakhstan (1)
-
-
Far East
-
China
-
Sichuan China
-
Wenchuan China (1)
-
-
-
-
Kopet-Dag Range (3)
-
Kyrgyzstan (1)
-
Middle East
-
Iran
-
Elburz (1)
-
-
Zagros (1)
-
-
Tajikistan (1)
-
Turan (1)
-
Turkmenia
-
Karakum (1)
-
-
Uzbekistan (1)
-
-
Caspian Basin (1)
-
Caspian Sea (1)
-
Commonwealth of Independent States
-
Kazakhstan (1)
-
Kyrgyzstan (1)
-
Tajikistan (1)
-
Turan (1)
-
Turkmenia
-
Karakum (1)
-
-
Uzbekistan (1)
-
-
Europe
-
Southern Europe
-
Balkan Mountains (1)
-
-
-
-
commodities
-
petroleum
-
natural gas (1)
-
-
-
geochronology methods
-
infrared stimulated luminescence (1)
-
-
geologic age
-
Cenozoic
-
Quaternary
-
Holocene
-
Middle Ages (1)
-
-
-
Tertiary
-
Neogene
-
Pliocene (1)
-
-
-
-
-
Primary terms
-
Asia
-
Central Asia
-
Caspian Depression (1)
-
Kazakhstan (1)
-
-
Far East
-
China
-
Sichuan China
-
Wenchuan China (1)
-
-
-
-
Kopet-Dag Range (3)
-
Kyrgyzstan (1)
-
Middle East
-
Iran
-
Elburz (1)
-
-
Zagros (1)
-
-
Tajikistan (1)
-
Turan (1)
-
Turkmenia
-
Karakum (1)
-
-
Uzbekistan (1)
-
-
Caspian Sea (1)
-
Cenozoic
-
Quaternary
-
Holocene
-
Middle Ages (1)
-
-
-
Tertiary
-
Neogene
-
Pliocene (1)
-
-
-
-
crust (2)
-
data processing (1)
-
deformation (2)
-
earthquakes (5)
-
Europe
-
Southern Europe
-
Balkan Mountains (1)
-
-
-
faults (5)
-
folds (1)
-
geodesy (1)
-
geomorphology (1)
-
geophysical methods (2)
-
land use (1)
-
mud volcanoes (1)
-
petroleum
-
natural gas (1)
-
-
plate tectonics (1)
-
remote sensing (3)
-
seismology (1)
-
symposia (1)
-
tectonics
-
neotectonics (1)
-
salt tectonics (1)
-
-
Ashgabat Fault
Oblique to Orthogonal Convergence Across the Turan Block in the Post-Miocene
—SPOT-P image of Ashgabat. South of the main fault, dextral strike-slip acc...
Wikipedia: A Plea for Help
Rural Populations Suffer Most in Great Earthquakes
Seismic image enhancement of mud volcano bearing complex structure by the CDS method, a case study in SE of the Caspian Sea shoreline
Contrasting styles of convergence in the Arabia-Eurasia collision: Why escape tectonics does not occur in Iran
The westward motion of Turkey relative to Eurasia between the North and East Anatolian faults has been cited as one of the best examples of lateral transport of continental crust from a collision zone, in this case the Arabia-Eurasia collision. This process is variously called “escape” or “extrusion” tectonics. Range-parallel strike-slip faults within the Alborz (e.g., the Mosha fault) and Zagros Mountains (the Main Recent fault) of Iran have been regarded as playing roles similar to those of the North and East Anatolian faults in that they are responsible for the eastward transport of intervening Iranian crust away from the northward motion of the Arabia plate relative to Eurasia. However, both seismicity and GPS data show that there is no net eastward transport of Iranian crust with respect to Eurasia. Here we summarize how the tectonically active mountain ranges of Iran deform by combinations of thrusting and strike-slip movement oblique to the overall convergence vector across each region, without requiring net eastward movement with respect to Eurasia. A general conclusion is that strike-slip faults in collision zones can have different roles. These include not only the lateral transport of crustal material demonstrated in Turkey, but also the partitioning of strain into shortening and strike-slip components shown by the Alborz and Zagros structures and the accommodation of crustal shortening by strike-slip faults that rotate about a vertical axis.
A Major Medieval Earthquake on the Main Köpetdag (Kopeh Dagh) Fault, Turkmenistan
A Multiscale Exposure Model for Seismic Risk Assessment in Central Asia
The strain in the array is mainly in the plane (waves below ∼1 Hz)
Fluid Geodynamics of Deeply Buried Zones of Oil and Gas Accumulation in Sedimentary Basins
SEISMOLOGICAL NOTES: November–December 2000
Abstract The Bukhara-Khiva region forms the northern margin of the Mesozoic Amu-Darya Basin. We reconstructed several cross-sections across this margin from subsurface data. The objectives included examining the structure of the Bukhara and Chardzhou steps and determining the tectonic–sedimentary evolution of the basin during the Jurassic. Subsequent to the Cimmerian collision in the Middle Triassic, an extensional event controlled the deposition of the Early–Middle Jurassic siliciclastic succession in the Bukhara-Khiva region. The main Late Palaeozoic inherited structures were reactivated as normal faults during this period. Continental coarse-grained siliciclastic sediments are mainly confined to the basal Lower Jurassic section, probably Pliensbachian–Toarcian in age, whereas marine siliciclastic sediments occur in the early Late Bajocian. In the Early–Middle Jurassic the Bukhara and Chardzhou steps were predominantly sourced by areas of relief, the remains of Late Palaeozoic orogens located to the north. The rate of extension significantly declined during the Middle Callovian–Kimmeridgian period. Deposition of the overlying Lower Cretaceous continental red-coloured clastic sediments was related to the interaction of basin subsidence, a fall in eustatic sea-level and sediment supply. Subsequent marine transgression in the Late Barremian, partially related to broad thermal subsidence in the Amu-Darya Basin, resulted in the deposition of an extensive Late Cretaceous clay–marl succession.
Late Palaeozoic and Mesozoic evolution of the Amu Darya Basin (Turkmenistan, Uzbekistan)
Abstract The Amu Darya Basin (ADB) has been studied primarily for its important hydrocarbon reserves and to a lesser extent for its geodynamic evolution. The ADB is located on the SE portion of the Turan Platform, between the sutures of the Turkestan and Palaeo-Tethys oceans, which closed during the Late Palaeozoic and Early Mesozoic, respectively. Blocks and island arcs accreted to Eurasia during the Palaeozoic form a poorly defined, heterogeneous basement underlying the ADB. They played an important role in shaping its composite structure into variously orientated sub-basins and highs. In this paper, depth–structure and isopach maps, and regional cross-sections, are analysed to unravel the location and origin of the main structural elements and to characterize the subsidence evolution of the ADB. The main tectonic events leading to the formation and evolution of the ADB took place: (1) in the Late Palaeozoic–Early Triassic (back-arc, rollback and extension/strike-slip); (2) from the Middle Triassic to the Triassic–Jurassic boundary (Eo-Cimmerian collision of Gondwana-derived continental blocks with Eurasia); and (3) during the Early–Middle Jurassic (post-collision extensional event). The last part of this evolution reflects shortening and flexure due to Cenozoic collisions to the south. Palaeotectonic maps are used to relate these events to the geodynamics of the Tethyan domain.
2022 Annual Meeting
SSA 2021 Annual Meeting
Abstract An integrated geological and geochemical evaluation of the Charjou terrace area of the Amu Darya Basin in Turkmenistan and Uzbekistan shows that the main controls on hydrogen sulfide (H 2 S) distribution are the lithofacies of the reservoir and seal rocks and reservoir temperature. Thermo-chemical sulfate reduction (TSR) has likely occurred where reservoir temperatures are greater than approximately 100°C, and the reservoired gas is trapped in dolomitic reservoirs in contact with anhydrite. These chemical reactions occur both in carbonate platform and reefal buildups capped by anhydrite, as well as in structural traps that have undergone thrust-induced juxtapositioning of anhydrite with the dolomite gas reservoir. The reservoirs can have an H 2 S concentration as much as 4 vol.%. This, together with temperatures of 100–110°C and sulfate-rich formation waters, suggests that these reactions represent the earliest stage of TSR. Carbonate buildups, including reefs, capped by marine shales have very low to trace levels of H 2 S because the thermochemical sulfate reaction is not initiated, presumably caused by a lack of sulfate. Furthermore, H 2 S concentrations can vary greatly within a single field with stacked pay zones. Reservoir compartments sealed by marine shales have no H 2 S gas. A covariance between increased gas wetness and lower initial temperatures for TSR is also suggested.