Geochemical record of Late Quaternary paleoclimate from lacustrine sediments of paleo-lake San Felipe, western Sonora Desert, Mexico

Roy, Priyadarsi D.; Caballero, Margarita; Lozano, Rufino; Ortega, Beatríz; Lozano, Socorro; Pi, Teresa; Israde, Isabel; Morton, O.

doi:10.1016/j.jsames.2009.11.009

Cited by 38 publications

(42 citation statements)

References 48 publications

(61 reference statements)

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“…Here, we present the rare earth element (REE) geochemistry in order to understand the mineralogy and sediment sorting and relate them to the varying strength of runoff energy and sedimentation rate in the basin. This paper is a follow up to our earlier work (Roy et al, 2010) and aims to strengthen the hypothesis of changing dominant rainfall regimes during the late Pleistocene and Holocene. Based on the geochemical characteristics of the sediments, we attempt to identify different precipitation regimes, i.e.…”

Section: Introductionmentioning

confidence: 77%

“…A 950 cm long sediment core collected from the central part of the paleolake was studied for mineral magnetism (Ortega-Guerrero et al, 1999), palynology (Lozano-García et al, 2002), major and trace element geochemistry and organic and inorganic carbon (Roy et al, 2010) to reconstruct the paleohydrological conditions during the late Pleistocene and Holocene. For this work, we analyzed the concentrations of rare earth elements in 22 samples from the sediment core up to the depth of 756 cm.…”

Section: Sampling and Methodsmentioning

confidence: 99%

“…While the earlier works from this region had to deal with the problem of distinguishing NAM from winter precipitation by the jet stream, the minimal winter precipitation in the present setting allow the erosion rates and selective transportation of different size fractions of the sediments into the basin as a more direct proxy for the summer precipitation and NAM strength. For comparison, we considered data on multielement concentrations up to 42 cal kyr BP from Roy et al (2010) and generated new data that covers 42e50 cal kyr BP. Additionally, we present new geochemical data (major, trace and REE) from the surrounding sand dunes and catchment rocks and abundance of accessory minerals from the sediments of the basin and their possible sources.…”

Section: Introductionmentioning

confidence: 99%

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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

Roy

Caballero

Lozano

et al. 2012

Journal of Arid Environments

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Section: Introductionmentioning

confidence: 77%

Section: Sampling and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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

Roy

Caballero

Lozano

et al. 2012

Journal of Arid Environments

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“…The CIA index has been used previously to estimate the climatic control on chemical changes in various types of environments, including lacustrine sediments, and in environments of different ages (e.g., Roman-Ross et al, 2002;Das and Haake, 2003;Roy et al, 2010). However, the CIA does not exclusively reflect the climatic conditions that occurred in the catchment during weathering.…”

Section: Chemical Index Of Alterationmentioning

confidence: 99%

Inorganic geochemistry data from Lake El'gygytgyn sediments: marine isotope stages 6–11

Minyuk¹,

Borkhodoev²,

Wennrich

2014

Clim. Past

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Abstract. Geochemical analyses were performed on sediments recovered by deep drilling at Lake El'gygytgyn in central Chukotka, northeastern Russia (67 • 30 N; 172 • 05 E). Major and rare element concentrations were determined using X-ray fluorescence spectroscopy (XRF) on the < 250 µm fraction from 617 samples dated to ca. 440 and 125 ka, which approximates marine isotope stages (MIS) 11 to 6. The inorganic geochemistry indicates significant variations in elemental composition between glaciations and interglaciations. Interglacial sediments are characterized by high contents of SiO 2 , Na 2 O, CaO, K 2 O, and Sr and are depleted in Al 2 O 3 , Fe 2 O 3 , TiO 2 , and MgO. An extreme SiO 2 enrichment during MIS 11.3 and 9.3 was caused by an enhanced flux of biogenic silica (BSi). The geochemical structure of MIS 11 shows similar characteristics as seen in MIS 11 records from Lake Baikal (southeastern Siberia) and Antarctic ice cores, thereby arguing for the influence of global forcings on these records. High sediment content of TiO 2 , Fe 2 O 3 , MgO, Al 2 O 3 , LOI, Ni, Cr, and Zr typifies glacial stages, with the most marked increases during MIS 7.4 and 6.6. Reducing conditions during glacial times are indicated by peaks in the Fe 2 O 3 content and coinciding low Fe 2 O 3 /MnO ratios. This conclusion also is supported by P 2 O 5 and MnO enrichment, indicating an increased abundance of authigenic, fine-grained vivianite. Elemental ratios (CIA, CIW, PIA, and Rb/Sr) indicate that glacial sediments are depleted in mobile elements, like Na, Ca, K and Sr. This depletion was caused by changes in the sedimentation regime and thus reflects environmental changes.

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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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Geochemical record of Late Quaternary paleoclimate from lacustrine sediments of paleo-lake San Felipe, western Sonora Desert, Mexico

Cited by 38 publications

References 48 publications

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

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

Inorganic geochemistry data from Lake El'gygytgyn sediments: marine isotope stages 6–11

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

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