scholarly journals Study of Tectonic Activity in Young Eastern Alborz, Central Iran on the Basis of Alluvial Fans in the Shahrud-Bastam Area

2017 ◽  
Vol 07 (01) ◽  
pp. 69-82
Author(s):  
Ali Pourramezani ◽  
Soheila Bouzari
Keyword(s):  
Central Iran ◽  
Tectonic Activity ◽  
Alluvial Fans

Reconstruction of Late Quaternary Neotectonic Movements and Fluvial Activity in Sikkimese-Bhutanese Himalayan Piedmont

2015 ◽  
Vol 49 (1) ◽  
Author(s):  
Leszek Starkel ◽  
Dominik Płoskonka ◽  
Grzegorz Adamiec
Keyword(s):  
Late Quaternary ◽  
Tectonic Activity ◽  
Soil Profiles ◽  
Alluvial Fans ◽  
Piedmont Zone

AbstractIn the part of Sikkimese-Bhutanese Himalaya the youngest Siwalik overthrust had not developed, and the piedmont zone with extensive fans forms a semicircular gulf dismembered by several faults and minor overthrusts. Some uplifted parts of older deformed alluvial fans contain the lenses of organic clays which were earlier dated at 22–34 ka BP byTo distinguish various alluvial formations and phases of tectonic activity the authors dated older levels in several localities by OSL method as well as investigated soil profiles. Most mature soils over elevated blocks built of coarse alluvia were dated between 50 and 60 ka BP. Probably the previous

scholarly journals Geomorphological, hydrographical and sedimentological processes at the Serres basin due to quaternary fault tectonics

2001 ◽  
Vol 34 (1) ◽  
pp. 451
Author(s):  
Α. ΨΙΛΟΒΙΚΟΣ ◽  
Ε. ΒΑΒΛΙΑΚΗΣ ◽  
Κ. ΒΟΥΒΑΛΙΔΗΣ ◽  
Ε. ΠΑΠΑΦΙΛΙΠΠΟΥ-ΠΕΝΝΟΥ
Keyword(s):  
Tectonic Activity ◽  
Alluvial Fans ◽  
Quaternary Deposits ◽  
Sediment Delivery ◽  
Active Tectonic ◽  
Fault Tectonics ◽  
High Zone ◽  
Neogene Sediments ◽  
Main Fault ◽  
Inner Parts

On the S W foothills of Mt. Menikion and the NE part of Serres basin, four zones of composite alluvial fans have been formed. The upper zone of thick hard fanglomerates lies at altitudes of 280 to 600 m on Mt. Menikion schists and marbles. The high zone of loose fanglomerates, with red-brown sand matrix, lies at altitudes of 200 to 350 m on the neogene deposits. The intermediate zone of mixed coarse and fine elastics lies at altitudes of 80 to 140 m on neogene deposits. The lower zone of gravel, sand and silt deposits lies at altitudes of 10 to 60 m on quaternary terrace deposits. Each zone is approximately 13 - 17 km long and 1-2 km wide, with E/SE - W/NW trend, almost parallel to the main fault lines of the area. The fan zones were deposited along the slopes of Mt. Menikion and Serres basin, owing to the fault tectonics of the area. Several E/SE - W/NW trending parallel to each other listric faults, were formed on the basement on Mt. Menikion and the neogene deposits of Serres basin. Their blocks slided and turned downstream along the faults, so that their surface inclined backwards. Close to the faults, parallel valleys were formed. They filled up with quaternary deposits, brought down by activated torrents. The torrents flowed transversely to the fault blocks. At the inner parts of the blocks they deposited clastic material in the form of alluvial fans. In the outer – higher part of the blocks they were incised in the rocks or the neogene sediments, to form narrow valleys, with terraces along their walls. The staircase development of the relief finally resulted in a staircase development of the fan zones. The two zones, upper and high, seem to be Pleistocene in age and the torrents have already incised in the fan material. The two zones, intermediate and lower, seem to be Holocene in age and are still active. Tectonic activity seems to have been the main cause of sediment entrapment in the Serres basin and the low sediment delivery rate of the river Strymon during the Quaternary.

scholarly journals PRELIMINARY SEDIMENTOLOGICAL RESULTS INDICATE A NEW DETAILED STRATIGRAPHY FOR THE FLORINA SEDIMENTARY BASIN AND RELATE THEM WITH C02 PRESENCE

2018 ◽  
Vol 40 (1) ◽  
pp. 76
Author(s):  
S. Karakatsanis ◽  
N. Koukouzas ◽  
M. Pagonas ◽  
A. Zelilidis
Keyword(s):  
Sedimentation Rate ◽  
Depositional Environment ◽  
Co2 Storage ◽  
Middle Part ◽  
Alluvial Fan ◽  
Tectonic Activity ◽  
Alluvial Fans ◽  
Lowermost Part ◽  
Internal Change ◽  
Base Formation

Drill core analysis showed 41 sedimentary cycles in the sedimentary association of the Neogene to Quaternary Fiorina Basin, with a total thickness up to 560m. The lower part is the Base formation with an up to 297m thick, whereas middle part, Vevi formation is up to 127m thick and the upper part which corresponds to Lophon formation is up to 124m thick. The beginning of sedimentation in the basin, with alternated sand, clay and conglomeratic beds, with presence of xylite, at the lowermost part of Base formation, indicates a weak tectonic activity and low sedimentation rate. Tectonic activity increased and alluvial fans were formed in the rest part of Base formation. The 21 cycles within alluvial fans could be related mostly with 21 episodes of tectonic activity and sedimentation and less with climatic changes or autocyclic events. Depositional environment changed in the Vevi formation from terrestrial to lacustrine, where lacustrine and fluvio-lacustrine deposits were accumulated. Finally, the basin filled up with terrestrial deposits in the Lophon formation. So, the ratio of subsidence rate/sedimentation rate starts with <1, in Base formation, becomes =1 in the case of Vevi's formation and finally becomes again <1 in Lophon formation. Fluvial and alluvial fan environments can be used as CO2 storage sites, whereas the internal change of stratigraphy in the same environment of sedimentation does not allow the escape of CO2.

scholarly journals Neogene and Quaternary development of the Turiec Basin and landscape in its catchment: a tentative mass balance model

2011 ◽  
Vol 62 (4) ◽  
pp. 361-379 ◽  
Author(s):  
Michal Kováč ◽  
Jozef Hók ◽  
Jozef Minár ◽  
Rastislav Vojtko ◽  
Miroslav Bielik ◽  
...  
Keyword(s):  
Mass Balance ◽  
Coarse Grained ◽  
Tectonic Activity ◽  
Balance Model ◽  
Alluvial Fans ◽  
Mass Balance Model ◽  
Balance Study ◽  
Basin Inversion ◽  
Mass Balance Study ◽  
Planation Surfaces

Neogene and Quaternary development of the Turiec Basin and landscape in its catchment: a tentative mass balance modelThe development of the Turiec Basin and landscape evolution in its catchment has been reconstructed by methods of geological research (structural geology, sedimentology, paleoecology, and geochronological data) as well as by geophysics and geomorphology. The basin and its surrounding mountains were a subject of a mass balance study during periods of tectonic activity, accompanied by considerable altitudinal differentiation of relief and also during quiet periods, characterized by a development of planation surfaces in the mountains. The coarse clastic alluvial fans deposited beneath the offshore pelitic sediments document the rapid Middle Miocene uplift of mountains on the margin of the Turiec Basin. The Late Miocene finegrained sedimentation represents the main fill of this basin and its origin was associated with the formation of planation surfaces in the surrounding mountains. The rapid uplift of the western and northern parts of the catchment area during the latest Miocene and Early Pliocene times further generated the deposition of coarse-grained alluvial fans. The Late Pliocene basin inversion, due to uplift of the whole Western Carpathians mountain chain, was associated with the formation of the Early Quaternary pediment and ultimately with the formation of the Turiec river terrace systems.

Morphotectonic Analysis of Tanjung Bungo Area Based on Geological Structure Control, Central Sumatera Basin

2020 ◽  
Author(s):  
D., A., L., A. Putri
Keyword(s):  
Natural Resources ◽  
River Flow ◽  
Measurement Data ◽  
River System ◽  
Flow Patterns ◽  
Source Rocks ◽  
Aerial Photographs ◽  
Morphological Data ◽  
Tectonic Activity ◽  
Geological Structures

Tectonic activity in an area could result in various impacts such as changes in elevation, level of slope percentages, river flow patterns and systems, and the formation of geological structures both locally and regionally, which will form a new landscape. The tectonic activity also affects the stratigraphic sequences of the area. Therefore, it is necessary to study morphotectonic or landscape forms that are influenced by active tectonic activities, both those occur recently and in the past. These geological results help provide information of the potential of natural resources in and around Tanjung Bungo area. Morphological data are based on three main aspects including morphogenesis, morphometry, and morphography. The data are collected in two ways, the first is field survey by directly observing and taking field data such as measuring geological structures, rock positions, and outcrop profiles. The second way is to interpret them through Digital Elevation Model (DEM) and aerial photographs by analyzing river flow patterns and lineament analysis. The field measurement data are processed using WinTensor, Dips, and SedLog Software. The supporting data such as Topographic Maps, Morphological Elevation Maps, Slope Maps, Flow Pattern Maps, and Lineament Maps are based on DEM data and are processed using ArcGis Software 10.6.1 and PCI Geomatica. Morphotectonically, the Tanjung Bungo area is at a moderate to high-class level of tectonic activity taken place actively resulted in several joints, faults, and folds. The formation of geological structures has affected the morphological conditions of the area as seen from the development of steep slopes, structural flow patterns such as radial, rectangular, and dendritic, as well as illustrated by rough surface relief in Tanjung Bungo area. This area has the potential for oil and gas resources as indicated by the Telisa Formation, consisting of calcareous silts rich in planktonic and benthonic fossils, which may be source rocks and its contact with the Menggala Formation which is braided river system deposits that could be good reservoirs. Further research needs to be done since current research is only an interpretation of surface data. Current natural resources being exploited in Tanjung Bungo region are coals. The coals have thicknesses of 5-7 cm and are classified as bituminous coals.

Sign in / Sign up

Export Citation Format

Share Document