[Folda] Reminder Seminar Today 12:30 - Halldór Geirsson - Fault creep and plate boundary strain-partitioning in Trinidad-Tobago

[Siqi Li]

There are Halldor Geirsson's Friday Seminar today at 12:30, and Moneer's Master lecture at 14:00.

Master's Lecture in Geology - Moneer Fathel Alnethary
26. Jan - 14:00 to 16:00 | Location: Askja N-367
Title: Petrology of the Hornfels Contact Zone around the Hrossatungur Gabbro in the Eroded Hafnarfjall Central Volcano, W-Iceland

https://ugla.hi.is/vidburdir/SkodaVidburd.php?sid=1448&vidburdur_id=2290

-------- Original Message -------- 
Subject: Reminder Seminar Today 12:30 - Halldór Geirsson - Fault creep and plate boundary strain-partitioning in Trinidad-Tobago 
Date: Friday, January 26, 2018 09:40 GMT 
From: Maxwell Christopher Brown <maxwell at hi.is> 
To: jhi at hi.is 
 
 
Dear all,

Today we have:

Halldór Geirsson (Faculty of Earth Sciences)

Title: Fault creep and plate boundary strain-partitioning in Trinidad-Tobago

Date: Friday, 26th January
Time: 12:30
Place: 3rd Floor meeting room, Askja

Abstract: Plate boundaries often exhibit complex strain partitioning 
across multiple faults, as observed, for example, in south Iceland, the 
Tjörnes fracture zone, or the San Andreas fault zone. Furthermore, the 
particular mode of strain accumulation around faults varies depending on 
if the faults are fully locked or continuously creeping. Trinidad and 
Tobago are islands in the south western part of the Caribbean, located 
at the boundary of the Caribbean and South American plates. Here, we 
study results from GPS measurements, showing that the 2 cm/yr of 
transform motion in this location is divided among at least three 
faults, with at least one of them showing full creep behaviour. We 
suggest that the fault behaviour, and even the deformation partitioning 
between the different faults, is closely connected with abundant 
over-pressurised hydrocarbons (oil and gas) in south and central 
Trinidad. The fault creep matches with current (centuries) lack of 
upper-crustal seismicity in Trinidad, and the results help somewhat to 
better determine the seismic hazards in the region.

All are welcome.

Best wishes
Maxwell

-- 
Maxwell Brown
Research specialist
Institute of Earth Sciences
University of Iceland
Askja, Room 333
Sturlugata 7
101 Reykjavík
Iceland
  
email:maxwell at hi.is
tel (office): +354-525-4730
tel (lab): +354-525-4794
tel (mobile): +354-832-0015