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Los Pozos Formation

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Series: GSA Special Papers
Published: 01 July 2008
DOI: 10.1130/2008.442(08)
... U-Pb isotopic dating of detrital zircons from a conglomeratic barite sandstone in the Sonora allochthon and a calciclastic sandstone in the Mina México foredeep of the Minas de Barita area reveals two main age groups in the Upper Devonian part of the Los Pozos Formation, 1.73–1.65 Ga and 1.44...
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Series: GSA Special Papers
Published: 01 July 2008
DOI: 10.1130/2008.442(05)
... Formation” in northwest Sonora represent the southwesternmost occurrence of these genera in North America and date the host rocks as Givetian and Frasnian, respectively. Rhynchonelloid brachiopods ( Dzieduszyckia sonora ) and associated worm tubes in the Los Pozos Formation of the Sonora allochthon...
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Journal Article
Journal: GSA Bulletin
Published: 01 June 2000
GSA Bulletin (2000) 112 (6): 803-816.
... closures. The new data also require that land mammalian fossils found in the Río de los Pozos Formation are late Miocene, rather than Pliocene, as previously believed. Andes Ar/Ar Argentina magnetostratigraphy Miocene Precordillera In the late 1950s, it was proposed that the present-day...
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Series: GSA Field Guide
Published: 01 January 2012
DOI: 10.1130/2012.0025(03)
EISBN: 9780813756257
... this singular and historical place. Figure 5. Los Tres Hornos ruins, one of the oldest mineral processing facilities in America (mid-1600s). Figure 6. Heavy metal and Arsenic content in rocks, sediments, and mine waste material in the Mineral de Pozos area. Shale and sandstone host...
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Image
Field images of the Tobas La Angostura, Rio de <b>los</b> <b>Pozos</b>, and Mogotes Forma...
Published: 23 March 2018
Figure 7. Field images of the Tobas La Angostura, Rio de los Pozos, and Mogotes Formations. (A) General view of Tobas La Angostura Formation. (B) Detail from the distinctly tuffaceous facies association (FA7), which ranges from coarse crystalline tuff to volcanic lithic arenite with tuffaceous
Journal Article
Journal: Lithosphere
Published: 01 August 2014
Lithosphere (2014) 6 (4): 277-300.
... clastic rocks in the Sierra Norte de Córdoba, hornfelses in the La Clemira area, and medium-grade metamorphic rocks of the Pozo del Macho Formation ( Castellote, 1985b ) and equivalents in the east and southeast. The clastic rocks depositionally overlie a basal rhyolite in the El Escondido area...
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Journal Article
Journal: PALAIOS
Published: 01 January 2011
PALAIOS (2011) 26 (1): 55-65.
...). Fossil bones are embedded in a sedimentary matrix that discordantly cuts the three units of the butte. This feature has led to the proposal that the Cerro de los Batallones fossil assemblages were deposited in cavities formed as a consequence of a pseudokarstic process known as piping ( Pozo et al., 2004...
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Journal Article
Published: 01 July 2009
Journal of the Geological Society (2009) 166 (4): 695-709.
... for three marine transgressions from the Pacific Ocean ( Vergani et al . 1995 ; Franzese & Spalletti 2001 ; Franzese et al . 2003 ). The first one resulted in marine black mudstones (Los Molles Fm), prograding near-shore, deltaic and fluvial fans (Lajas and Challacó formations) and evaporites...
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Series: Geological Society, London, Special Publications
Published: 01 January 2015
DOI: 10.1144/SP399.5
EISBN: 9781862396753
..., thrusted over Mesozoic and Cenozoic continental clastic rocks (sandstones, conglomerates and siltstones) ( Fossa Mancini 1942 ; Harrington 1971 ; Ahumada 2004 ; Ahumada et al. 2006 ). The Cenozoic (Miocene and Pliocene) deposits have been correlated with the Mariño and Río de Los Pozos formations...
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Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2416(12)
.... (B) Geographical situation of the Majalcorón Formation outcrops with the location of the holostratotype (Peñas de Majalcorón), parastratotype (Fuente de la Pileta), and other analyzed sections: 1—northwest of Venta de Agramaderos, 2—Cazuela del Pozo, 3—north of Fuente de la Pileta, 4—Rosal Bajo, 5...
Journal Article
Journal: AAPG Bulletin
Published: 01 June 1974
AAPG Bulletin (1974) 58 (6): 1201-1239.
..., Mogote Pan de Azucar, Sierra de los Organos, Pinar del Rio Province). He assigned the middle and, upper units to a redefined Jagua Formation. The section exposed at Mogote Pan de Azucar is important because it is one of the few in western Pinar del Rio Province which is unfaulted in the Callovian...
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Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2422(07)
... Rosa Formation and stratigraphic equivalents such as the Antimonio Formation; González-León, 1980 ). The discon formity between Paleozoic and Mesozoic strata is not well exposed except at localities east of Cerro Pozos de Serna ( Calmus et al., 1997 ; Lucas et al., 1999 ), to the south of Cerro El...
Journal Article
Published: 01 March 2003
Journal of Sedimentary Research (2003) 73 (2): 309-327.
... of Qm 95 F 3 Lt 2 ) with P/F > 1 and was produced by recycling of sedimentary cover (Triassic arkoses and carbonate rocks) in the SW part of the basin (DS-4, Peñacoba Formation). Finally, depositional sequences 5, 6, and 7 (Pinilla de los Moros-Hortigüela, Pantano, and Abejar-Castrillo de la Reina...
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Journal Article
Journal: PALAIOS
Published: 01 October 2003
PALAIOS (2003) 18 (4-5): 334-348.
...OLIVER MACSOTAY; ROBERT N. ERLICH; TULIO PERAZA Abstract The Late Cretaceous seas of Venezuela were characterized by deposition of organic carbon-rich limestones, cherts, and shales in the Maracaibo and Barinas/Apure Basins of western Venezuela (La Luna and Navay Formations) and in the Maturín...
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Journal Article
Journal: AAPG Bulletin
Published: 01 December 1972
AAPG Bulletin (1972) 56 (12): 2369-2379.
... pozo Chacon : unpub. rept. , Geofondo DAP , La Habana . Baagguelaar , H. , (unpub.), Reporte paleontológico de los pozos Ariguanabo : Geofondo D , La Habana . Bermúdez , P. J. , 1950 , Contribución al estudio del Cenozóico cubano : Soc. Cubana Hist. Nat. Mem. , v. 19...
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Journal Article
Published: 04 January 2016
Journal of Micropalaeontology (2016) 35 (1): 66-78.
... climatic and ecological transitions from lake sediment cores. Here, eight species of non-marine ostracods and two calcareous algae are recorded from modern sediments and late Quaternary strata from Laguna de los Pozuelos, Jujuy Province, northwestern Argentina. Four species, Limnocythere alexanderi...
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Journal Article
Published: 01 June 2014
The Canadian Mineralogist (2014) 52 (3): 513-531.
... of volcaniclastic rocks in the basin related to the Cordillera de los Andes uplift. It is integrated by lacustrine rocks of the Pozo D-129 Formation (Barremian to Aptian), the main source rock of the basin, which grades laterally into the fluvial Matasiete Formation ( Sciutto 1981 , Paredes et al. 2007 ). Both...
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Series: Geological Society, London, Special Publications
Published: 01 January 2008
DOI: 10.1144/SP301.4
EISBN: 9781862395497
... in Utah in which the lacustrine Green River Formation accumulated during Palaeogene time. While relative relief remained low, these lakes experienced fine-clastic and carbonate sedimentation and nutrient-rich ecologies under subhumid climates. Later, as North America's active western margin impinged...
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Journal Article
Journal: AAPG Bulletin
Published: 01 February 1954
AAPG Bulletin (1954) 38 (2): 193-283.
...Emile Rod; Wolf Maync ABSTRACT The understanding of the Cretaceous stratigraphy in Venezuela is hampered by some vaguely defined or unsuitable type localities. A revision of the Cogollo formation of Western Venezuela is proposed as fresh exposures at the type locality on the Río Cogollo revealed...
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Journal Article
Published: 01 June 2016
Journal of Sedimentary Research (2016) 86 (6): 712-733.
... shows the Pozo Grande section (Atzompa Formation stratotype). Sampling locations for U-Pb geochronology are plotted as blue stars. After ( Monroy-Fernández and Sosa-Patrón 1984 ). B) Simplified S–N cross section with a vertical scale of 2 parallel to the measured section. Vertical exaggeration of 3...
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