Active Long-Lived Faults Emerging Along Slow-Spreading Mid-Ocean Ridges
نویسندگان
چکیده
منابع مشابه
Dynamical instability produces transform faults at mid-ocean ridges.
Transform faults at mid-ocean ridges--one of the most striking, yet enigmatic features of terrestrial plate tectonics--are considered to be the inherited product of preexisting fault structures. Ridge offsets along these faults therefore should remain constant with time. Here, numerical models suggest that transform faults are actively developing and result from dynamical instability of constru...
متن کاملAxial Structure of Fast Spreading Mid - Ocean Ridges : Implications for Overlapping Spreading Centers
Studies of the structure of mid-ocean ridges and the processes involved at these accreting plate boundaries have played an important role in the development of plate tectonics models over the last two decades. During this time our concept of the accretion/spreading process has evolved from a two-dimensional, steady-state picture to a three dimensional, time-dependent view of the volcanism and r...
متن کاملThe Structure of Mid-Ocean Ridges
Mid-ocean ridges provide an important window into the processes of mantle convection and magmatism. The formation, cooling, and eventual subduction of oceanic lithosphere dominate both the large-scale dynamics of the upper mantle and the Earth’s global heat loss. The melt generated during pressure-release melting of the upwelling mantle beneath mid-ocean ridges contributes most of the annual ma...
متن کاملMagma Flow at Mid-Ocean Ridges
Liquid water is not stable under current martian surface conditions, but the presence of small gullies on the polewardfacing slopes of midto highlatitude martian surfaces suggests that erosion by liquid water might have occurred. Costard et al. (p. 110) developed a global climate model for Mars when it had a higher obliquity (about 300,000 years ago). Their model shows that more melting of the ...
متن کاملOn origin of near-axis volcanism and faulting at fast spreading mid-ocean ridges
At fast and superfast spreading mid-ocean ridges, such as the East Pacific Rise, a plate boundary is defined by a narrow (tens to hundreds of meters wide) neovolcanic zone within which the bulk of the upper oceanic crust is created. However, detailed near-bottom observations indicate that the volcanic construction may occasionally persist several kilometers off of the ridge axis. It has been pr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Oceanography
سال: 2012
ISSN: 1042-8275
DOI: 10.5670/oceanog.2012.07