Palaeomagnetism of the Western and Central sectors of the Trans-Mexican volcanic belt-implications for tectonic rotations and palaeosecular variation in the past 11 Ma

Ruiz-Martínez, V. C.; Urrutia‐Fucugauchi, J.; Osete, M. L.

doi:10.1111/j.1365-246x.2009.04447.x

Cited by 16 publications

(3 citation statements)

References 49 publications

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“…The Mexican segment shows a narrow, relatively steep trench inner wall and non-or incipiently developed forearc. The Trans-Mexican volcanic arc lies oblique to the trench axis (MOLNAR and SYKES, 1969;URRUTIA-FUCUGAUCHI and DEL CASTILLO, 1977;FERRARI and ROSAS-ELGUERA, 2000;RUIZ-MARTINEZ et al, 2010). Maximum trench depths in the Mexican segment exceed 4,400 m, except off Manzanillo and Zihuatanejo, and where submarine seamounts arise within the trench.…”

Section: Tectonicsmentioning

confidence: 99%

Overview of Recent Coastal Tectonic Deformation in the Mexican Subduction Zone

Ramírez‐Herrera

Kostoglodov

Urrutia‐Fucugauchi

2011

Pure Appl. Geophys.

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Holocene and Pleistocene tectonic deformation of the coast in the Mexico subudction margin is recorded by geomorphic and stratigraphic markers. We document the spatial and temporal variability of active deformation on the coastal Mexican subduction margin. Pleistocene uplift rates are estimated using wave-cut platforms at ca. 0.7-0.9 m/ka on the Jalisco block coast, Rivera-North America tectonic plate boundary. We examine reported measurements from marine notches and shoreline angle elevations in conjunction with their radiocarbon ages that indicate surface uplift rates increasing during the Holocene up to ca. 3 ± 0.5 m/ka. In contrast, steady rates of uplift (ca. 0.5-1.0 m/ka) in the Pleistocene and Holocene characterize the Michoacan coastal sector, south of El Gordo graben and north of the Orozco Fracture Zone (OFZ), incorporated within the Cocos-North America plate boundary. Significantly higher rates of surface uplift (ca. 7 m/ka) across the OFZ subduction may reflect the roughness of subducting plate. Absence of preserved marine terraces on the coastal sector across El Gordo graben likely reflects slow uplift or coastal subsidence. Stratigraphic markers and their radiocarbon ages show late Holocene (ca. last 6 ka BP) coastal subsidence on the Guerrero gap sector in agreement with a landscape barren of marine terraces and with archeological evidence of coastal subsidence. Temporal and spatial variability in recent deformation rates on the Mexican Pacific coast may be due to differences in tectonic regimes and to localized processes related to subduction, such as crustal faults, subduction erosion and underplating of subducted materials under the southern Mexico continental margin.

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Section: Tectonicsmentioning

confidence: 99%

Overview of Recent Coastal Tectonic Deformation in the Mexican Subduction Zone

Ramírez‐Herrera

Kostoglodov

Urrutia‐Fucugauchi

2011

Pure Appl. Geophys.

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“…All of these studies selected the palaeomagnetic poles to construct the SAPWPs mainly from different versions of the Global Palaeomagnetic Database (McElhinny & Lock 1990). To detect small rotations we compute a palaeomagnetic reference pole for the last 5 Ma based on the area mean palaeomagnetic poles from the 17 TAFI studies (Johnson et al 2008) and a recent palaeomagnetic pole from Mexico (Ruiz-Martínez et al 2010). Besse & Courtillot (2002) and Torsvik et al (2008) used interpolated Euler rotation for ages younger than 5 Ma, but Schettino & Scotese (2005) used the model of current plate motions NUVEL-1A (DeMets et al 1994).…”

Section: T E C T O N I C I M P L I C At I O N O F Pa L a E O M A G N mentioning

confidence: 99%

“…None of these studies have included the high quality palaeomagnetic data from the TAFI studies (Johnson et al 2008). To detect small rotations we compute a palaeomagnetic reference pole for the last 5 Ma based on the area mean palaeomagnetic poles from the 17 TAFI studies (Johnson et al 2008) and a recent palaeomagnetic pole from Mexico (Ruiz-Martínez et al 2010). These palaeomagnetic poles were transferred to European coordinates using the kinematic model NUVEL-1A (DeMets et al 1994) and their mean age.…”

Section: T E C T O N I C I M P L I C At I O N O F Pa L a E O M A G N mentioning

confidence: 99%

Palaeomagnetism of the South Harghita volcanic rocks of the East Carpathians: implications for tectonic rotations and palaeosecular variation in the past 5 Ma

Panaiotu

Vişan

Ţugui

et al. 2012

Geophysical Journal International

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SUMMARY Lavas of Pliocene–Quaternary age were sampled in the South Harghita Mountains, which form the southern end of the Călimani–Gurghiu–Harghita volcanic chain of the East Carpathians. The analyses of 68 volcanic sites in the South Harghita Mountains provided 62 sites with well‐constrained directional data (n > 5 and k > 50) in an age interval ranging from 0.5 to 4.3 Ma. The age and polarity for the 62 sites (38 normal and 24 reversed) are consistent with the Geomagnetic Reversal Time Scale and support the model of the southward migration of the volcanism. The distribution of the VGPs is Fisherian and the mean pole position, both from all contributing sites and from the 53 sites older than 2 Ma, includes the spin axis. This result is consistent with the absence of important vertical axis rotations after the emplacement of the volcanic rocks in agreement with tectonic models for the Pliocene–Quaternary evolution of the bending area of the East Carpathians. Virtual geomagnetic pole dispersions are consistently high compared with global values obtained between 40 and 55°N, but closer to the values obtained only from the Time Averaged geomagnetic Field Initiative studies for the same latitudinal band. Our data are compatible with the prediction of the statistical palaeosecular variation model TK03. The inclination anomaly is less than 1° in accord with the Total Average Field global data. These palaeomagnetic data from the South Harghita volcanic rocks are the first data from the southeastern Europe which can be considered in the databases for time averaged field and palaeosecular variation from lavas analyses in the last 5 Ma.

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PSV10: A Global Data Set for 0–10 Ma Time‐Averaged Field and Paleosecular Variation Studies

Cromwell

Johnson

Tauxe

et al. 2018

Geochem Geophys Geosyst

249

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Globally distributed paleomagnetic data from discrete volcanic sites have previously been used for statistical studies of paleosecular variation and the structure of the time‐averaged field. We present a new data compilation, PSV10, selected from high‐quality paleodirections recorded over the past 10 Ma and comprising 2,401 sites from 81 studies. We require the use of modern laboratory and processing methods, a minimum of four samples per site, and within‐site Fisher precision parameter, kw, ≥50. Studies that identify significant tectonic effects or explicitly target transitional field states are excluded, thereby reducing oversampling of transitional time intervals. Additionally, we apply two approaches using geological evidence to minimize effects of short‐term serial correlation. PSV10 is suitable for use in new global geomagnetic and paleomagnetic studies as it has greatly improved spatial coverage of sites, especially at equatorial and high latitudes. VGP dispersion is latitudinally dependent, with substantially higher values in the Southern Hemisphere than at corresponding northern latitudes when no VGP cutoff is imposed. Average inclination anomalies for 10° latitude bins range from about +3 ± 2° to −7.5 ± 2° for the entire data set, with the largest negative values occurring at equatorial and mid‐northern latitudes. New 0–5 Ma TAF models (LN3 and LN3‐SC) based on selections of normal polarity data from PSV10 indicate a g20 term that is 3.0% of g10. Non‐zonal variations in field structure are observed near the magnetic equator and in regions of increased radial flux at high latitudes over the Americas, the Indian Ocean, and Asia.

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Palaeomagnetism of the Western and Central sectors of the Trans-Mexican volcanic belt-implications for tectonic rotations and palaeosecular variation in the past 11 Ma

Cited by 16 publications

References 49 publications

Overview of Recent Coastal Tectonic Deformation in the Mexican Subduction Zone

Overview of Recent Coastal Tectonic Deformation in the Mexican Subduction Zone

Palaeomagnetism of the South Harghita volcanic rocks of the East Carpathians: implications for tectonic rotations and palaeosecular variation in the past 5 Ma

PSV10: A Global Data Set for 0–10 Ma Time‐Averaged Field and Paleosecular Variation Studies

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