Zobrazeno 1 - 10
of 162
pro vyhledávání: '"Derek Keir"'
Autor:
Lauretta Kaerger, Chiara Del Ventisette, Paola Vannucchi, Giancarlo Molli, Carolina Pagli, Derek Keir
Publikováno v:
Frontiers in Earth Science, Vol 12 (2024)
The Inner Northern Apennines (Italy) are a region with a dominant N-S to NNW-SSE fault system, but dissected and offset by several E-W to NE-SW trending structures and lineaments. The knowledge about the nature of these transverse structures, their o
Externí odkaz:
https://doaj.org/article/39680dae32614a57bdc908302bb67c0e
Autor:
Ameha Muluneh, Sascha Brune, Carolina Pagli, Alessandro La Rosa, Derek Keir, Derek Neuharth, Giacomo Corti
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 12, Pp n/a-n/a (2024)
Abstract Central Afar is shaped by the interaction between the Red Sea (RS) and Gulf of Aden (GoA) rifts. While there have been several studies conducted in the region, we know surprisingly little about the mechanism of connection between these two r
Externí odkaz:
https://doaj.org/article/8d1fcdae0cfc45fb82cb1aebbea97c77
Autor:
Derek Keir, Bruce S. Lieberman, Valerio Acocella, Wouter Buytaert, Steven L. Forman, Michel Grégoire, Kenneth P. Kodama, David R. Lentz, Carmen Sanchez-Valle
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
Externí odkaz:
https://doaj.org/article/6d36fa8a65354292ba4fae079de1b71b
Autor:
Wubamlak Nigussie, Abera Alemu, Kevin Mickus, Derek Keir, Zelalem Demissie, Yoseph Muhabaw, Ameha A. Muluneh, Giacomo Corti, Esubalew Yehualaw
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
Since the Quaternary, extension and magmatism in the Main Ethiopian Rift (MER) have been mainly focused into narrow magmatic segments that have numerous volcanic centers and caldera collapses that offer favorable conditions for the occurrence of geot
Externí odkaz:
https://doaj.org/article/3e72095b1b084c67892562a82f7113e6
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 10, Pp n/a-n/a (2023)
Abstract In magma‐rich rifts, normal faulting is commonly thought to be induced by dike intrusions. However, whether fault slip occurs purely tectonically is unclear. An earthquake sequence starting with a Mw 5.5 earthquake occurred in December 202
Externí odkaz:
https://doaj.org/article/5b40446f4add46728c5065f3c58404c0
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
In magma-rich continental rifts extension by magma intrusion is thought to accommodate much of the extension. We aim to constrain major melt reservoirs in the crust during magma-rich rifting by applying P-to-S receiver functions (RFs) using legacy te
Externí odkaz:
https://doaj.org/article/5b778c6356ee462b9af269ca05323fec
Autor:
Melanie Siegburg, Thomas M. Gernon, Derek Keir, Jonathan M. Bull, Rex N. Taylor, Emma J. Watts, Tim Greenfield, Ermias F. Gebru
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
Magmatic continental rifts show evidence that discrete rift segments experience episodic intrusive and eruptive events, more commonly termed rifting episodes. However, whether multiple rifting episodes across adjacent rift segments are clustered in t
Externí odkaz:
https://doaj.org/article/5785e1f2e7df4ad8be8fe694f680ddb2
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 24, Iss 4, Pp n/a-n/a (2023)
Abstract Fluid overpressure and fluid migration are known to be able to trigger or induce fault slip. However, relatively little is known about the role of fluids on generating earthquakes in some of the major continental rifts. To address this, we i
Externí odkaz:
https://doaj.org/article/1409de0215a04d8ebefcf6dbe51673ac
Autor:
Wubamlak Nigussie, Kevin Mickus, Derek Keir, Abera Alemu, Yoseph Muhabaw, Ameha A. Muluneh, Esubalew Yehualaw, Zelalem Demissie
Publikováno v:
Frontiers in Earth Science, Vol 10 (2023)
In magma-rich continental rifts, extension is commonly localized as dike injection in discrete magmatic segments which appear from surface geology to mimic the along-axis segmentation of ocean ridges. However, the subsurface morphology of these zones
Externí odkaz:
https://doaj.org/article/06e2567b46244a35847b5a657f637113
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
The Mugello Basin (North-Eastern Tuscany) is an intermontane basin of the Northern Apennines (Italy) with a well-documented record of seismicity; the two major historical earthquakes occurred in 1542 (Mw = 6.0) and in 1919 (Mw = 6.4). In this study,
Externí odkaz:
https://doaj.org/article/ccaeefd8402c43778e6b35b5f0cd0ee4