Provenance of sediments deposited at paleolake San Felipe, western Sonora Desert: Implications to regimes of summer and winter precipitation during last 50 cal kyr BP

Roy, Priyadarsi D.; Caballero, Margarita; Lozano, Socorro; Morton, O.; Lozano, Rufino; Jonathan, M.P.; Sánchez, José Luis; Macías, Ma. Consuelo

doi:10.1016/j.jaridenv.2012.01.008

Cited by 20 publications

(21 citation statements)

References 38 publications

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“…Periods of aggradation in Baja California also correlate with periods of increased runoff in a record from a high elevation southern California lake at~36 ka and~53 ka (Kirby et al, 2006, Fig. 9B), and similar records in lake systems across southwestern North America (e.g., Laguna San Felipe, 13e9 ka, Lozano-García et al, 2002, Roy et al, 2012Lago Santiaguillo, Durango, at 12.3e9.3 ka, Roy et al, 2014; Babicora, at 29e38 ka and 57e65 ka, Metcalfe et al, 2002, Fig. 9B).…”

Section: Tropical Pacific Forcing Of Alluvial Cyclesmentioning

confidence: 66%

“…B. Lake records for Sonoran, southern California and Chihuahuan deserts (Kirby et al, 2006;Lozano-García et al, 2002;Roy et al, 2012;2014;Metcalfe et al, 2002) C. Alluvial chronology data for the westernmost Mojave and NW Sonoran deserts, organized according to latitude (on the left); cosmogenic depth profiles marked with squares (e.g., Blisniuk et al, 2010Blisniuk et al, , 2012; individual boulder ages marked with circles (Frankel et al, 2007;Matmon et al, 2005;Spelz et al, 2008;van der Woerd et al, 2006;Kent, 2011). D. Magnetic stratigraphy in core MD02-2508 offshore Baja California (Fig.…”

Section: Tropical Pacific Forcing Of Alluvial Cyclesmentioning

confidence: 99%

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Late Pleistocene-Holocene alluvial stratigraphy of southern Baja California, Mexico

Antinao

McDonald

Rhodes

et al. 2016

Quaternary Science Reviews

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a b s t r a c tA late Pleistocene to Holocene alluvial stratigraphy has been established for the basins of La Paz and San Jos e del Cabo, in the southern tip of the Baja California peninsula, Mexico. Six discrete alluvial units (Qt1 through Qt6) were differentiated across the region using a combination of geomorphologic mapping, sedimentological analysis, and soil development. These criteria were supported using radiocarbon, optically stimulated luminescence and cosmogenic depth-profile geochronology. Major aggradation started shortly after~70 ka (Qt2), and buildup of the main depositional units ended at~10 ka (Qt4). After deposition of Qt4, increasing regional incision of older units and the progressive development of a channelized alluvial landscape coincide with deposition of Qt5 and Qt6 units in a second, incisional phase. All units consist of multiple 1e3 m thick alluvial packages deposited as upper-flow stage beds that represent individual storms. Main aggradational units (Qt2-Qt4) occurred across broad (>2 km) channels in the form of sheetflood deposition while incisional stage deposits are confined to channels of~0.5 e2 km width. Continuous deposition inside the thicker (>10 m) pre-Qt5 units is demonstrated by closely spaced dates in vertical profiles. In a few places, disconformities between these major units are nevertheless evident and indicated by partly eroded buried soils. The described units feature sedimentological traits similar to historical deposits formed by large tropical cyclone events, but also include characteristics of upper-regime flow sedimentation not shown by historical sediments, like long (>10 m) wavelength antidunes and transverse ribs. We interpret the whole sequence as indicating discrete periods during the late Pleistocene and Holocene when climatic conditions allowed larger and more frequent tropical cyclone events than those observed historically. These discrete periods are associated with times when insolation at the tropics was higher than the present-day conditions, determined by precessional cycles, and modulated by the presence of El Niño-like conditions along the tropical and northeastern Pacific. The southern Baja California alluvial record is the first to document a precession-driven alluvial chronology for the region, and it constitutes a strong benchmark for discrimination of direct tropical influence on any other alluvial record in southwestern North America.

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Section: Tropical Pacific Forcing Of Alluvial Cyclesmentioning

confidence: 66%

Section: Tropical Pacific Forcing Of Alluvial Cyclesmentioning

confidence: 99%

Late Pleistocene-Holocene alluvial stratigraphy of southern Baja California, Mexico

Antinao

McDonald

Rhodes

et al. 2016

Quaternary Science Reviews

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“…She presents a summary of climate change data from the Chihuahuan and Sonoran Desert regions and the Trans-Mexican Volcanic Belt from the Middle Pleistocene to the Holocene. To date, a few remains of ancient lake sediments in the great deserts of northern Mexico have been identified mostly from geological-sedimentary drilling (Castiglia and Fawcett, 2006;Chávez-Lara et al, 2012;Roy et al, 2010Roy et al, , 2012. Research primarily focuses on the reconstruction of paleoenvironments through ostracod analysis.…”

Section: Introductionmentioning

confidence: 99%

Inland dunes fauna and flora from Paleolake Irritila in the Comarca Lagunera, Coahuila, northern Mexico

Czaja¹,

Palacios-Fest²,

Estrada-Rodríguez³

et al. 2014

BSGM

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For over a decade the Chihuahuan Desert has been considered as a hotspot of biodiversity. The diverse aquatic ecosystems, especially, are (and were) rich in mollusk species. The dunes of the Comarca Lagunera, Coahuila, Mexico, are of major importance due to the well-preserved remains of animals and plants in a paleolake that covered a vast area in the region. This paper is the first report of the paleolimnological investigations of the Paleolake Irritila ecosystems in northern Mexico. We determined more than 28 species of gastropods, bivalves, ostracods, algae and one aquatic plant. The dunes contain one of the richest and most diverse fauna of the late Quaternary of northern Mexico. The fossils indicate a permanent but shallow lake with moderate salinity and alkalinity (pH) higher than 8.5, most likely around 10. Most of the mollusks are distributed outside Mexico and restricted to northern latitudes (northern United States and Canada). Several of them are endemic to the southern United States (Florida, Nevada, and Texas). For the first time in North America, using the local fauna and flora preserved in dune sediments, we try to reconstruct the paleoenvironmental conditions in northern Mexico during the late Quaternary.Keywords: Paleolake, inland dunes, Pleistocene mollusk fauna, northern Mexico. Resumen Desde hace más de una década el Desierto Chihuahuense está considerado como un hotspot de biodiversidad. Especialmente los diversos ecosistemas acuáticos contienen (y contenían) un alto número de especies de moluscos. Las dunas de la

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“…The Rare Earth Elements (REE) have been widely used as provenance indices either to describe the water hydrology or sediments origin (Dia et al, 2000;Roy et al, 2012). Furthermore soil processes, like argilluviation, carbonation etc., have been described through the REE fate and transport in soil horizons (Laveuf and Cornu, 2009).…”

Section: Introductionmentioning

confidence: 99%

Preliminary results of REE-Y sorption on carbonate rocks

Moraetis¹,

Mouslopoulou

2017

geosociety

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Provenance of sediments deposited at paleolake San Felipe, western Sonora Desert: Implications to regimes of summer and winter precipitation during last 50 cal kyr BP

Cited by 20 publications

References 38 publications

Late Pleistocene-Holocene alluvial stratigraphy of southern Baja California, Mexico

Late Pleistocene-Holocene alluvial stratigraphy of southern Baja California, Mexico

Inland dunes fauna and flora from Paleolake Irritila in the Comarca Lagunera, Coahuila, northern Mexico

Preliminary results of REE-Y sorption on carbonate rocks

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