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Stability of ridge-ridge-ridge tripl...

Mitchell, Garrett Alan.

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Stability of ridge-ridge-ridge triple junctions based on the mechanics of rift interaction: The northern Galapagos and Rodriguez Triple Junctions.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Stability of ridge-ridge-ridge triple junctions based on the mechanics of rift interaction: The northern Galapagos and Rodriguez Triple Junctions./
Author:	Mitchell, Garrett Alan.
Description:	138 p.
Notes:	Source: Masters Abstracts International, Volume: 49-02, page: .
Contained By:	Masters Abstracts International49-02.
Subject:	Geology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1482503
ISBN:	9781124270067

Stability of ridge-ridge-ridge triple junctions based on the mechanics of rift interaction: The northern Galapagos and Rodriguez Triple Junctions.
Mitchell, Garrett Alan.

Stability of ridge-ridge-ridge triple junctions based on the mechanics of rift interaction: The northern Galapagos and Rodriguez Triple Junctions. - 138 p.

Source: Masters Abstracts International, Volume: 49-02, page: .

Thesis (M.S.)--University of Maryland, College Park, 2010.

Although known for decades to be kinematically stable, Ridge-Ridge-Ridge (RRR) triple junctions sometimes display a complex sequence of short-lived rifts and no direct connection between the ridges. The Galapagos Triple Junction (GTJ), in the Eastern Equatorial Pacific Ocean and the Rodriguez Triple Junction (RTJ), in the Central Indian Ocean, serve as end-members of stability observed as RRR triple junctions. I propose that the stability of RRR triple junctions, principally whether secondary rifts are generated or direct connection between the spreading centers is favored, can be understood based on the mechanics of crack interaction. I develop numerical models of the stress field in an elastic plate under tension, with cracks representing rifts in the vicinity of a RRR triple junction and GIS spatial analysis to demonstrate the factors that control RRR triple junction's stability. Although RRR triple junctions are kinematically stable, rift junctions are mechanically unstable, generating a rapidly evolving and complex plate boundary.

ISBN: 9781124270067Subjects--Topical Terms:

516570
Geology.

Stability of ridge-ridge-ridge triple junctions based on the mechanics of rift interaction: The northern Galapagos and Rodriguez Triple Junctions.
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008 130515s2010 ||||||||||||||||| ||eng d
020 $a 9781124270067
035 $a (UMI)AAI1482503
035 $a AAI1482503
040 $a UMI $c UMI
100 1 $a Mitchell, Garrett Alan. $3 1672570
245 1 0 $a Stability of ridge-ridge-ridge triple junctions based on the mechanics of rift interaction: The northern Galapagos and Rodriguez Triple Junctions.
300 $a 138 p.
500 $a Source: Masters Abstracts International, Volume: 49-02, page: .
500 $a Adviser: Laurent G.J. Montesi.
502 $a Thesis (M.S.)--University of Maryland, College Park, 2010.
520 $a Although known for decades to be kinematically stable, Ridge-Ridge-Ridge (RRR) triple junctions sometimes display a complex sequence of short-lived rifts and no direct connection between the ridges. The Galapagos Triple Junction (GTJ), in the Eastern Equatorial Pacific Ocean and the Rodriguez Triple Junction (RTJ), in the Central Indian Ocean, serve as end-members of stability observed as RRR triple junctions. I propose that the stability of RRR triple junctions, principally whether secondary rifts are generated or direct connection between the spreading centers is favored, can be understood based on the mechanics of crack interaction. I develop numerical models of the stress field in an elastic plate under tension, with cracks representing rifts in the vicinity of a RRR triple junction and GIS spatial analysis to demonstrate the factors that control RRR triple junction's stability. Although RRR triple junctions are kinematically stable, rift junctions are mechanically unstable, generating a rapidly evolving and complex plate boundary.
590 $a School code: 0117.
650 4 $a Geology. $3 516570
650 4 $a Geophysics. $3 535228
690 $a 0372
690 $a 0373
710 2 $a University of Maryland, College Park. $b Geology. $3 1269314
773 0 $t Masters Abstracts International $g 49-02.
790 1 0 $a Montesi, Laurent G.J., $e advisor
790 1 0 $a Hier-Majumder, Saswata $e committee member
790 1 0 $a Zhu, Wenlu $e committee member
790 $a 0117
791 $a M.S.
792 $a 2010
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1482503