Ridge offsets, normal faulting, and gravity anomalies of slow spreading ridges
نویسندگان
چکیده
منابع مشابه
On 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 کاملSystematics of ridge propagation south of 30°S
New high-resolution Geosat altimetry data south of 30°S reveal numerous propagating ridge wakes along intermediateand slow-spreading ridges. These new examples provide a large enough database to establish systematics of ridge propagation. Almost all active propagating ridges propagate down a regional along-axis gravity or bathymetry gradient. The sense of the propagating ridge offset (right lat...
متن کاملResponse to Comment on "Glacial cycles drive variations in the production of oceanic crust".
Goff comments that faulting is important for creation of abyssal hills and is the dominant process at slow-spreading ridges. We respond that faulting is indeed important but cannot alone explain the bathymetric signal predicted by our models and observed at the Australian-Antarctic Ridge. We show that for intermediate- to fast-spreading ridges, abyssal hill spacing is consistent with the period...
متن کاملSlow Spreading Ridges of the Indian Ocean: An Overview of Marine Geophysical Investigations
Sparse and non-availability of high resolution geophysical data hindered the delineation of accurate morphology, structural configuration, tectonism and spreading history of Carlsberg Ridge (CR) and Central Indian Ridges (CIR) in the Indian Ocean between Owen fracture zone at about 10N, and the Rodriguez Triple Junction at ~25S. Analysis of available multibeam bathymetry, magnetic, gravity, sea...
متن کاملFormation mechanisms of Europan ridges with apparent lateral offsets
Introduction: Ridges are the most common linear and tectonic surface features on Europa [1,2,3,4] and apparent lateral offsets are often observed along them [4,5]. Ridges have formed throughout Europa’s geologic history, creating identifiable crosscutting relationships [3,4]. These crosscutting relationships offer us an opportunity to determine the mechanisms responsible for ridge formation [6,...
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: Journal of Geophysical Research: Solid Earth
سال: 1995
ISSN: 0148-0227
DOI: 10.1029/94jb03267