scholarly journals Weak ductile shear zone beneath a major strike‐slip fault: Inferences from earthquake cycle model constrained by geodetic observations of the western North Anatolian Fault Zone

2014 ◽  
Vol 119 (4) ◽  
pp. 3678-3699 ◽  
Author(s):  
Tadashi Yamasaki ◽  
Tim J. Wright ◽  
Gregory A. Houseman
Keyword(s):  
Shear Zone ◽  
Fault Zone ◽  
Strike Slip ◽  
North Anatolian Fault ◽  
Strike Slip Fault ◽  
Ductile Shear Zone ◽  
Earthquake Cycle ◽  
Cycle Model ◽  
North Anatolian Fault Zone ◽  
Major Strike

Neotectonics of the SW Marmara region, NW Anatolia, Turkey

2006 ◽  
Vol 143 (2) ◽  
pp. 229-241 ◽  
Author(s):  
ÖMER FEYZI GÜRER ◽  
ERCAN SANGU ◽  
MUZAFFER ÖZBURAN
Keyword(s):  
Fault Zone ◽  
Structural Characteristics ◽  
Strike Slip ◽  
North Anatolian Fault ◽  
Marmara Region ◽  
Field Observations ◽  
Extensional Tectonics ◽  
North Anatolian Fault Zone ◽  
The North ◽  
Differential Movement

This study reports on the geometric and structural characteristics of the North Anatolian Fault Zone in the southwest Marmara region. The geometric and kinematic features of the faults in the region are described, based on field observations. In addition, the Neogene and Quaternary basin fill which occupies large areas in the region has been determined, and the tectonic regimes controlling these basins are explained. The neotectonic regime is also explained considering different deformation phases affecting the region. The N–S extension and E–W strike-slip have affected the region possibly since the latest Pliocene–Quaternary. Field observations show that these extensional tectonics around the south Marmara region are related to right strike-slip on the E–W North Anatolian fault zone and the N–S Aegean extensional system. The faults in this zone trend approximately E–W in the eastern part of the region and NE–SW towards the west of the region, indicating that they accommodate rotation in addition to differential movement between adjacent blocks.

Strain Partitioning Between the Izmir-Balikesir Transfer Zone and the North Anatolian Fault Zone, NW Turkey

2020 ◽  
Author(s):  
Levent Tosun ◽  
Elif Çakır ◽  
Bora Uzel ◽  
Ökmen Sümer ◽  
Atilla Arda Özacar ◽  
...  
Keyword(s):  
Fault Zone ◽  
Strike Slip ◽  
North Anatolian Fault ◽  
Western Anatolia ◽  
Deformation Pattern ◽  
Strain Partitioning ◽  
North Anatolian Fault Zone ◽  
The North ◽  
Nw Turkey ◽  
Transfer Zone

<p>The present tectonic framework of the Western Anatolia has been dominated by two major deformations. The first one is the product of the slab-edge processes related to the convergence between Eurasian and African plates along with the Aegean-Cyprean subduction system since the Oligocene, and the second one is the westwards escape of Anatolian Block along the North Anatolian Fault Zone (NAFZ) since the late Miocene. The first one resulted in a widespread extensional deformation in the Western Anatolia and the Aegean region and is associated with slab-detachment and slab-tear processes that gave rise to the development of dynamic topography and various core-complexes (e.g., Cyclades and Menderes). Recent studies have shown that the deferential extensional strain between the core complexes in the region has been accommodated by strike-slip dominated transfer zones, the İzmir-Balıkesir Transfer Zone (İBTZ), which developed (sub)parallel to the extension direction and accommodate differential extension and rotational deformation in the region. The second one gave way to the development of a complex strike-slip deformation pattern and an array of pull-apart basin complexes throughout the northern margin of the Anatolian Block. The NAFZ and İBTZ interact around the Balıkesir-Bursa region resulting in a very peculiar deformation style due to partitioning of strain between these major structures.<br>This study aims at unraveling how the strain partitioning operates between İBTZ and NAFZ and to reveal the kinematic constraints that produced the present tectonic scheme in the region. The geometry and kinematics of the faults are determined by analyzing 2773 fault slip data obtained from 49 sites evenly distributed throughout the study area. The preliminary results show that the İzmir-Balıkesir Transfer Zone localized after Miocene with the decoupling of strike-slip faults, and to the episodic exhumation of the metamorphic core complexes. The focal mechanism solutions of the recent earthquakes support this decoupling and manifest the seismic activity of the İBTZ. This study is supported by a Tübitak Project, Grant Number of 117R011.</p>

scholarly journals Turkish earthquakes reveal dynamics of fracturing along a major strike-slip fault zone

Eos ◽  
2000 ◽  
Vol 81 (28) ◽  
pp. 309 ◽  
Author(s):  
Ibrahim Çemen ◽  
Ergun Gökten ◽  
Baki Varol ◽  
Recep Kiliç ◽  
Volkan Özaksoy ◽  
...  
Keyword(s):  
Fault Zone ◽  
Strike Slip ◽  
Strike Slip Fault ◽  
Major Strike

scholarly journals ANALISIS STRUKTUR GEOLOGI UNTUK PERENCANAAN DAN PENGEMBANGAN WILAYAH KOTA SORONG, PAPUA

2020 ◽  
Vol 1 (02) ◽  
Author(s):  
Dyah Ayu Setyorini ◽  
Arista Muhartanto ◽  
Muhammad Burhannudinnur ◽  
Suherman Dwi Nuryana ◽  
Grace Khatrine
Keyword(s):  
Shear Zone ◽  
Fault Zone ◽  
Strike Slip ◽  
Strike Slip Fault

<div><table cellspacing="0" cellpadding="0" align="left"><tbody><tr><td align="left" valign="top"><p class="Abstract">Daerah Indonesia Timur merupakan daerah yang kompleks secara geologi. Hingga saat ini penelitian yang dilakukan di daerah Indonesia Timur dan sekitarnya masih belum komprehensif, sehingga studi dan penelitian lebih lanjut terus dilakukan. Penelitian-penelitian yang terus dilakukan di daerah Indonesia Timur, khususnya di daerah Kepala Burung, memberikan berbagai hipotesis mengenai struktur dan tektonik yang berkembang di daerah tersebut. Zona Sesar Sorong (Sorong Fault Zone - SFZ) merupakan struktur muda yang berkembang di bagian utara Papua, memanjang hingga 1000 km dari bagian timur hingga barat Kepala Burung.  Tujuan  penelitian untuk Mengetahui kemenerusan pola-pola arah struktur Sesar Sorong yang berkembang di daerah Sorong dan sekitarnya. Metode yang dilakukan untuk mengetahui kejelasan dari  struktur Sesar Sorong dapat diketahui dari data singkapan-singkapan batuan yang telah dilalui oleh sesar tersebut, yakni berupa data-data struktur. Hasil penelitian  menunjukkan Sesar Sorong sebagai  strike slip fault pada sepanjang zona sesarnya dalam suatu  shear zone dapat membentuk stepover, berupa zona yang mengalami depression dan ridge yang terjadi akibat gaya transpression dan transtension. Identikasi tersebut didasarkan dengan ditemukannya beberapa bukti di lapangan, berupa data bidang sesar dengan slicken sides yang dijumpai di lokasi TKS-01</p></td></tr></tbody></table></div>

Sign in / Sign up

Export Citation Format

Share Document