![Mw 6.0 Karonga, Malawi Earthquake Occurred on Cenozoic Faults that Reactivated Precambrian Shear Zone: Evidence from Aeromagnetic and Electrical Resistivity Imaging için kapak resmi Mw 6.0 Karonga, Malawi Earthquake Occurred on Cenozoic Faults that Reactivated Precambrian Shear Zone: Evidence from Aeromagnetic and Electrical Resistivity Imaging için kapak resmi](/client/assets/cf6e192b74af2810/ctx/images/no_image.png)
Mw 6.0 Karonga, Malawi Earthquake Occurred on Cenozoic Faults that Reactivated Precambrian Shear Zone: Evidence from Aeromagnetic and Electrical Resistivity Imaging
Başlık:
Mw 6.0 Karonga, Malawi Earthquake Occurred on Cenozoic Faults that Reactivated Precambrian Shear Zone: Evidence from Aeromagnetic and Electrical Resistivity Imaging
Yazar:
Kolawole, Folarin, author.
ISBN:
9780438039612
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (99 pages)
Genel Not:
Source: Masters Abstracts International, Volume: 57-06M(E).
Advisors: Estella A. Atekwana Committee members: Mohamed G. Abdelsalam; Daniel Laó-Dávila.
Özet:
The 2009 Karonga, Malawi earthquake caused a surface rupture length of 14-18 km along a single W-dipping fault on the hanging wall of the North Basin of the Malawi Rift. This part of the rift is underlain by the NW-trending Precambrian Mughese Shear Zone (MSZ). I used aeromagnetic and electrical resistivity data to elucidate the relationship between surface rupture locations and pre-existing structures. Although several magnetic lineaments are visible in the basement, mapped surface ruptures align with a single 37 km-long, 148°-162° - striking magnetic lineament dipping 40°SW, and is characterized by a zone of electrical disturbance associated with near-surface soil liquefaction features. Fault geometries, regional kinematics and spatial distribution of seismicity suggest that seismogenic faults reactivated the basement fabric found along the half-graben hinge zone. I suggest that focusing of strain accommodation and seismicity along the half-graben hinge zone is facilitated and modulated by the presence of the basement fabric.
Notlar:
School code: 0664
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Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
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XX(687980.1) | 687980-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
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