Where can I get information about failed rift?

Question

In geology field.

In Geology field. Of course I can surf the internet, but there is so many information that I need to extract in order to know this things much better.

Answer 1

for a good reliable source go to:

www.usgs.gov

and then do a search for the rift valley in africa (which is a failed rift). You could also do a search for "wilson cycle" which will also discuss failed rifts.

Things like google and wikipedia are handy, but their sources are a little suspect. If you need reliable information go to the USGS.

Answer 2

Failed Rifts

If rifting stops before complete continental breakup, the failed rift or aulocogen will fill in with sediments and be buried in the subsurface, perhaps to be re-exposed by some later episode of erosion or discovered by seismic explorations of the crust. Aulocogens are common features associated with continental breakup. Continental rifts seem to start as a number of rift-rift-rift triple junctions. Two of the rift arms become new ocean basin and the third becomes a failed rift. The East African rift (EAR) appears to be a modern example. The EAR is the failing arm from the triple junction including the Red Sea and Gulf of Aden.

Iowa played host to an unusual group of visitors. Geologists, land agents, and seismic survey crews crisscrossed the state gathering information on the oil and natural gas potential of some of Iowa’s most deeply-buried rocks, the rocks of the Midcontinent Rift System (MRS). The MRS is a failed rift, a great rip through the earth’s crust, that stretches for a thousand miles from eastern Lake Superior, across the center of Iowa, and south into Kansas (Fig. 1). The rift formed about 1.1 billion years ago, and had it continued to spread, it would have formed a new ocean. But the rifting stopped as suddenly as it started, and a new sequence of events reversed the rifting process producing a unique geologic structure – one that potentially contains significant oil and gas reserves.Origin of the Midcontinent Rift The Midcontinent Rift that exists today formed during two distinct stages. Stage 1 began with extensional forces stretching and pulling the crust until a rip opened across much of the continent. Rather than a single rip, the crust developed two parallel faults that bounded a series of wedge-shaped blocks along the axis of the rift. As the rift spread wider the central block slid downward, forming a graben. Dense, black basaltic lava erupted, rising from deep within the crust along the faults and flowing out onto the central block. Huge volumes of basalt erupted, its heat softening the crust and its weight causing the rift to further subside. When the volcanism stopped, the rift continued to sink and rivers carried sand, gravel, and mud into the deepening valley. The river systems evolved into a rift lake teaming with bacteria and

Answer 3

Google the African continental rift system ...it is a failed rift and you should Find lots of info regarding it...

Answer 4

try specifics such as "cheshire basin" North sea Basin", northsea is a good example actually

Answer 5

google