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Paper Topic:

Mendocino Triple Junction

Mendocino Triple Junction


Mendocino Triple Junction

Mendocino Triple Junction

Page 1

The Mendocino Triple Junction

The deformational chronicles of the tectonic plates is examined from the standpoint of movement of the numerous faults bounded by the structural topography and environment and by the fault kinematics connected with the lately industrialized San Andreas transform margin Accumulation and subduction are continuing underneath the continental margin north of the Mendocino fracture zone , with the linkage from the San Andreas fault system from the south . The continuous deformation due to

the interactions among the Gorda , Pacific , and North American plates are collectively called the Mendocino Triple Junction

The Mendocino Triple Junction stands for the setting of extreme change in plate tectonic processes from the convergence in the Cascadia subduction (north of the Mendocino Triple Junction ) and the translation in the San Andreas system (south of the Mendocino Triple Junction . The abrupt changes form this tectonic processes resulted in the dramatic change in the thermic region in North America and the evolution in the lithosphere formation in the said region (Dickinson and Snyder , 561 Lachenbruch and Sass , 195-197 Zandt and Furlong , 377-378

The unstable intersection of the fault zones called the Mendocino Triple Junction divided the Pacific region , and North America , including North California . The meeting point

The Mendocino Triple Junction is an unstable triple junction located in the North California west coast that is comprised of the intersection of the Pacific Plate , the North American Plate , and the Gorda Plate (Oppeheimer et al . 1666 . The junction has complex plate activities due to seismic destructive above 6 .5 in magnitude earthquakes that occurred over the past 100 years (Dengler et al , 48-50 . The positioning of the Mendocino Triple Junction has transferred from its original location in the Los Angeles latitude to Cape Mendocino over the last decades (Jachens and Griscom , 9380-9385

Mendocino Triple Junction

Page 2

One of its junctions , the San Andreas Fault , is located in the northwest-southwest portion of North America and the Pacific . The Pacific Plate moves northward simultaneously as the North American Plate moves to another region to collide with the Pacific Plate (Henstock doi :10 .1029 /2001JB000902 . The precise location of the San Andreas Fault is not established because of the complexities of the area (Simlila 1402 . Since the year 1800 , statistics have shown that seven earthquakes have taken place with the least of magnitude four in the scale (Kelsey and Carver , 4799-4811

Another junction in the Mendocino group is the Cascadia subduction zone that is located north of the Mendocino Triple Junction . The 15-degree subduction angle continues to escalate as the depth of the subducting plate increases (Dengler et al , 45 . Earthquakes in this area occur after 300 to 560 years , depending upon ruptures if the zone crossing point (Clarke and Carver , 190

The last area to be included in the Mendocino Triple Junction is the Gorda plate . The eastward movement of the Gorda Plate caused a clockwise movement in the Juan de Fuca plates , a plate formerly...

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