Late Quaternary paleohydrological conditions in the drylands of northern Mexico: a summer precipitation proxy record of the last 80 cal ka BP

Roy, Priyadarsi D.; Quiroz‐Jiménez, Jesús D.; Pérez‐Cruz, Ligia; Lozano‐García, Socorro; Metcalfe, Sarah E.; Lozano-Santacruz, Rufino; Lopez‐Balbiaux, Nayeli; Sánchez‐Zavala, José L.; Romero, Francisco Martín

doi:10.1016/j.quascirev.2012.11.020

Cited by 37 publications

(58 citation statements)

References 65 publications

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“…This pattern would be consistent with a reduction in monsoon strength associated with the gradual southward migration of the ITCZ as NH insolation declined, although SSTs remain generally warm (Table 2). At Zirahuen in the TMVB a dry event around 4000 cal yr BP has been linked to increased ENSO forcing (Lozano-García et al, 2013).…”

Section: 4 4000 Cal Yr Bpmentioning

confidence: 99%

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The Holocene history of the North American Monsoon: ‘known knowns’ and ‘known unknowns’ in understanding its spatial and temporal complexity

Metcalfe

Barron

Davies

2015

Quaternary Science Reviews

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146

155

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Evidence for climatic change across the North American Monsoon (NAM) and adjacent areas is reviewed, drawing on continental and marine records and the application of climate models.Patterns of change at 12,000, 9000, 6000 and 4000 cal yr BP are presented to capture the nature of change from the Younger Dryas (YD) and through the mid-Holocene. At the YD, conditions were cooler overall, wetter in the north and drier in the south, while moving into the Holocene

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Section: 4 4000 Cal Yr Bpmentioning

confidence: 99%

“…Stahle et al, 2009 Metcalfe (2006), palaeolimnological work on lake sediments in the modern deserts of northern Mexico has continued, although more often that has involved reworking previously published sites in greater detail, or using new methods (e.g. Roy et al, 2013). There has been work on new sites (e.g.…”

mentioning

confidence: 99%

The Holocene history of the North American Monsoon: ‘known knowns’ and ‘known unknowns’ in understanding its spatial and temporal complexity

Metcalfe

Barron

Davies

2015

Quaternary Science Reviews

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146

155

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“…In southwestern North America, dry periods alternated with periods of enhanced effective moisture relative to present-day conditions during the late Quaternary (e.g., Li et al, 2008;Kirby et al, 2013;Roy et al, 2013). Knowledge regarding paleoclimate conditions for this region is primarily derived from the analysis of records from lacustrine sediments, marine cores, and speleothems (Kirby et al, 2012(Kirby et al, , 2013Wagner et al, 2010).…”

Section: Introductionmentioning

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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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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“…Recent reviews of Barron et al (), Antinao and McDonald (), Metcalfe et al (), and Roy et al () have attempted to understand the dynamics of moisture sourced from the Pacific Ocean and evaluated different forcings controlling the geographic distributions of the winter storms and summer precipitation related to the North American Monsoon (NAM) and tropical cyclone. In a sedimentary record reaching up to the Marine Isotope Stage (MIS) 4, Roy et al () proposed that the winter storms had minimal influence in the regions located south of 29°N latitude during the last glacial period and the hydroclimate of northern Mexico was mainly influenced by the dynamics of the summer precipitation. During the LGM, precipitation was restricted to central‐northern Mexico, and a broader region in north‐northwestern Mexico remained dry (Roy et al, ).…”

Section: Introductionmentioning

confidence: 99%

Orbital‐scale droughts in central‐northern Mexico during the late Quaternary and comparison with other subtropical and tropical records

et al. 2017

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Palaeoclimate research in subtropical arid Mexico is mainly focused to infer dynamics and geographic distributions of different precipitation regimes, but droughts have received less attention. We present a new sedimentary core record indicating orbital‐scale dynamics of droughts that occurred in central‐northern Mexico during the late Quaternary. This record is reconstructed from abundances of authigenic carbonate and windblown clastic sediments in a 1026‐cm‐long sediment core from the Santiaguillo ephemeral lake. The Marine Isotope Stage (MIS) 2 lacked drought, and at least two different droughts were centred at c. 13.5 ka and at c. 7 ka during the MIS 1. The drought of c. 13.5 ka in the Santiaguillo ephemeral lake was contemporary to an interval of droughts in the Basin of Mexico (central Mexico) and stronger aeolian activity in the Baja California peninsula (northwestern Mexico). This synchronous arid condition, observed in the subtropical as well as tropical Mexico, occurred during an interval of higher spring insolation, relatively warmer but fluctuating global temperature, and stronger El Niño‐Southern Oscillation. Unsuccessful radiocarbon dating for the lower part of the sediment core led to an assignment of uncertain chronology to droughts that occurred possibly between MIS 5 and MIS 3. Copyright © 2017 John Wiley & Sons, Ltd.

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Late Quaternary paleohydrological conditions in the drylands of northern Mexico: a summer precipitation proxy record of the last 80 cal ka BP

Cited by 37 publications

References 65 publications

The Holocene history of the North American Monsoon: ‘known knowns’ and ‘known unknowns’ in understanding its spatial and temporal complexity

The Holocene history of the North American Monsoon: ‘known knowns’ and ‘known unknowns’ in understanding its spatial and temporal complexity

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

Orbital‐scale droughts in central‐northern Mexico during the late Quaternary and comparison with other subtropical and tropical records

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