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Galapagos Microplate

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Journal Article
Published: 01 April 1995
Canadian Journal of Earth Sciences (1995) 32 (4): 508-515.
... of the Galapagos Microplate at the junction of the Pacific, Cocos, and Nazca plates. Samples were obtained from lower peridotite and gabbro layers, Fe–Ti basalts, very recent neovolcanic flows, and the thin sedimentary cover. The samples were dredged, cored, or video-grabbed during the research cruise Sonne 60...
Journal Article
Journal: Geology
Published: 01 May 2008
Geology (2008) 36 (5): 339-342.
...Hans Schouten; Deborah K. Smith; Laurent G.J. Montési; Wenlu Zhu; Emily M. Klein Abstract The Galapagos triple junction is a ridge-ridge-ridge triple junction where the Cocos, Nazca, and Pacific plates meet around the Galapagos microplate. Directly north of the large scarps of the Cocos-Nazca Rift...
FIGURES | View All (4)
Journal Article
Journal: Geology
Published: 01 August 1992
Geology (1992) 20 (8): 685-688.
...Jeffrey A. Karson; Stephen D. Hurst; Peter Lonsdale Abstract Oceanic crust that initially formed at the fast-spreading (130 mm/yr) East Pacific Rise at ∼1 Ma is exposed in the walls of Hess Deep rift at the northern edge of the Galapagos microplate. Steep fault scarps expose a dismembered vertical...
Journal Article
Published: 01 October 1993
Journal of the Geological Society (1993) 150 (5): 965-976.
...R. C. SEARLE; R. T. BIRD; R. I. RUSBY; D. F. NAAR Abstract In this paper we synthesize and discuss the results of recent detailed geophysical surveys and reconstructions of two active mid-ocean ridge microplates on the East Pacific Rise. We quantify their development in terms of the principal...
Journal Article
Journal: Geology
Published: 01 February 2013
Geology (2013) 41 (2): 183-186.
... . Kurz M.D. Geist D. , 1999 , Dynamics of the Galápagos hotspot from helium isotope geochemistry : Geochimica et Cosmochimica Acta , v. 63 , p. 4139 – 4156 , doi:10.1016/S0016-7037(99)00314-2 . Lonsdale P. , 1988 , Structural pattern of the Galápagos microplate and evolution...
FIGURES
Image
A–E: Schematic evolution of <b>Galapagos</b> triple junction region for past 2 m.y...
in > Geology
Published: 01 May 2008
occurs north of Cocos-Nazca Rift. In contrast, the southern triple junction and Dietz Deep Rift have been stable and have bounded a rotating Galapagos microplate for ~1.5 m.y. Note that proto Dietz Deep Rift and Extinct Rift occupied symmetrical positions about Cocos-Nazca Rift ca. 1.5 Ma. F: Black line
Image
A: Location maps showing major tectonic features of <b>Galapagos</b> triple juncti...
in > Geology
Published: 01 May 2008
Figure 1. A: Location maps showing major tectonic features of Galapagos triple junction (after Karson et al., 2002 ). GMP—Galapagos microplate, NGMP—North Galpagos micro-plate, ER—Extinct Rift, IR—Incipient Rift, DDR—Dietz Deep Rift, C-N—Cocos-Nazca spreading center, EPR—East Pacific Rise, TJ
Journal Article
Journal: Geosphere
Published: 01 June 2017
Geosphere (2017) 13 (3): 911-949.
... ) or to facilitate major ridge-jumps ( Naar and Hey, 1991 ). Well-developed microplate spreading centers frequently demonstrate fanning, mostly symmetric, spreading about a central spreading system and a clear spreading axis may be evident (e.g., the Magellan Trough, Tamaki and Larson 1988 ; the Galapagos Rise...
FIGURES | View All (17)
Series: Economic Geology
Published: 01 January 2005
DOI: 10.5382/AV100.06
EISBN: 9781934969519
... floor after the Red Sea. Several other large deposits on the mid-ocean ridges are on the order of 100,000 t up to 1 Mt each (Lucky Strike, Snakepit, Logatchev, 13° N EPR, and the Galapagos rift). In the back-arc rifts of the western Pacific, the largest deposits are in the Manus basin, the North Fiji...
FIGURES | View All (7)
Journal Article
Published: 01 April 1993
Journal of the Geological Society (1993) 150 (2): 381-392.
... of the Eastern Mediterranean 1985 17 483 491 Geological Society, London, Special Publication Lonsdale P. Structural pattern of the Galapagos microplate and evolution of the Galapagos triple junctions Journal of Geophysical Research 1988 93 13551 13574 Luyendyk B. P. Kamerling M...
Journal Article
Published: 01 August 2006
Bulletin of the Seismological Society of America (2006) 96 (4A): 1332-1343.
... and reported with a magnitude ( M w ) of 6.4 and a strike-slip mechanism with a large normal dip-slip motion. This mechanism agrees with mapped faults in the area that suggest transtensional deformation on the forearc and the entire western boundary of the Panama microplate. Aftershock locations do...
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Series: Geological Society Special Publications
Published: 01 January 2012
DOI: 10.1144/SP367.3
EISBN: 9781862396159
... Abstract Plate boundary forces acting within the Cocos Plate that is being subducted at a rate of 8.5–9.0 cm a −1 towards N32°E below the Caribbean Plate and the Panama microplate are found responsible for contemporaneous superimposed compressive, wrench and extensive fault patterns in Central...
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Journal Article
Journal: Geology
Published: 01 March 2006
Geology (2006) 34 (3): 185-188.
... lavas are unlike any siliceous igneous rocks found in ocean crust formed at mid-ocean ridges or in intraplate oceanic volcanic settings (e.g., East Pacific Rise, Iceland, and Galapagos), but are similar to those in intraoceanic subduction zone settings (e.g., Smith et al., 2003 ). It seems reasonable...
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Image
Natural examples of rifting near Euler pole. A: Woodlark Basin, Papua New G...
in > Geology
Published: 08 December 2017
—Papua New Guinea; AUS—Australian plate; SOL—Solomon plate; WDL—Woodlark Basin; PAC—Pacific plate; COC—Cocos plate; NAZ—Nazca plate; GM—Galapagos microplate; G—Galapagos archipelago; GR—Galapagos Rise.
Image
(A) Map of the Caribbean region showing principal structural elements of th...
Published: 01 July 2008
plateau basalts are from Hauff et al. (2000) and Kerr et al. (2002) . Additional features identified as follows: AF—Anegada Fault; CT—Cayman Trough spreading center; GP—Gonive microplate; HS—Hispaniola microplate; LMT—Los Muertos Trench; MR—Mona rift; PR—Puerto Rico; PRT—Puerto Rico Trench; PR-VI
Image
(A) Plate-tectonic setting for southern Central America. Magnetic anomalies...
Published: 01 June 2013
boundary of the Panama microplate is from Silver et al. (1990) and Marshall et al. (2000) . BFZ—Balboa fracture zone, CFZ—Coiba fracture zone, CNS-2—Cocos-Nazca spreading center 2, CR—Costa Rica, CRR—Costa Rica Rift, CoR—Coiba Ridge, GR—Galapagos Rift, MAT—Middle America Trench, MR—Malpelo Ridge, NIC
Image
Locations of the extinct ridges evaluated in this study are shown on the ve...
in > Geosphere
Published: 01 June 2017
; ELB—Ellice Basin; EMP—Emperor fracture zone; FRI—Friday; HUD—Hudson; GL—Gallego; GLP—Galapagos Rise; GUA—Guadalupe; HKT—Hokkaido Trough; KUL—Kula ridge; LIL—Liliuokalani ridge; MTH—Mathematician; MAG—Magellan Trough; MAP—Malpelo; MEN—Mendoza; MGD—Magdalena; MNH—Manihiki; MON—Monterey; NCT—Nova Canton
Image
Locations of the extinct ridges evaluated in this study are shown on the ve...
in > Geosphere
Published: 01 June 2017
; ELB—Ellice Basin; EMP—Emperor fracture zone; FRI—Friday; HUD—Hudson; GL—Gallego; GLP—Galapagos Rise; GUA—Guadalupe; HKT—Hokkaido Trough; KUL—Kula ridge; LIL—Liliuokalani ridge; MTH—Mathematician; MAG—Magellan Trough; MAP—Malpelo; MEN—Mendoza; MGD—Magdalena; MNH—Manihiki; MON—Monterey; NCT—Nova Canton
Image
Locations of the extinct ridges evaluated in this study are shown on the ve...
in > Geosphere
Published: 01 June 2017
; ELB—Ellice Basin; EMP—Emperor fracture zone; FRI—Friday; HUD—Hudson; GL—Gallego; GLP—Galapagos Rise; GUA—Guadalupe; HKT—Hokkaido Trough; KUL—Kula ridge; LIL—Liliuokalani ridge; MTH—Mathematician; MAG—Magellan Trough; MAP—Malpelo; MEN—Mendoza; MGD—Magdalena; MNH—Manihiki; MON—Monterey; NCT—Nova Canton
Image
Locations of the extinct ridges evaluated in this study are shown on the ve...
in > Geosphere
Published: 01 June 2017
; ELB—Ellice Basin; EMP—Emperor fracture zone; FRI—Friday; HUD—Hudson; GL—Gallego; GLP—Galapagos Rise; GUA—Guadalupe; HKT—Hokkaido Trough; KUL—Kula ridge; LIL—Liliuokalani ridge; MTH—Mathematician; MAG—Magellan Trough; MAP—Malpelo; MEN—Mendoza; MGD—Magdalena; MNH—Manihiki; MON—Monterey; NCT—Nova Canton