TY - JOUR
T1 - Paleohydrology of the Santiaguillo Basin (Mexico) since late last glacial and climate variation in southern part of western subtropical North America
AU - Roy, Priyadarsi D.
AU - Chávez-Lara, Claudia M.
AU - Beramendi-Orosco, Laura E.
AU - Sánchez-Zavala, José L.
AU - Muthu-Sankar, Gowrappan
AU - Lozano-Santacruz, Rufino
AU - Quiroz-Jimenez, Jesús D.
AU - López-Balbiaux, Nayeli
N1 - Publisher Copyright:
© 2015 University of Washington.
PY - 2015/11/1
Y1 - 2015/11/1
N2 - Stratigraphy, geochemistry and radiocarbon dating of a succession of sediment in the Santiaguillo Basin (central-northern Mexico) help reconstruct the millennial-scale dynamics of hydrological variability that occurred in the southern part of western subtropical North America since the late last glacial. Runoff was generally above average during the late last glacial from ~ 27 to 18. ka. Following this interval, runoff decreased and deposition of authigenic carbonate and aeolian transported sediment increased until ~ 4. ka. Heinrich 1 and 2, and Younger Dryas were intervals of reduced runoff and increased aeolian activity. The wetter climate of central-northern Mexico and arid conditions in north-northwestern Mexico during the late last glacial were probably related to formation of tropical cyclones in the eastern North Pacific during the autumn with restricted rainfall swaths and an absent/weaker North American Monsoon. Enhanced North American Monsoon and tropical cyclones with expanded rainfall swaths brought more summer and autumn precipitation to a broader region extending from the central-northern Mexico to the continental interiors of southwestern US during the early Holocene.
AB - Stratigraphy, geochemistry and radiocarbon dating of a succession of sediment in the Santiaguillo Basin (central-northern Mexico) help reconstruct the millennial-scale dynamics of hydrological variability that occurred in the southern part of western subtropical North America since the late last glacial. Runoff was generally above average during the late last glacial from ~ 27 to 18. ka. Following this interval, runoff decreased and deposition of authigenic carbonate and aeolian transported sediment increased until ~ 4. ka. Heinrich 1 and 2, and Younger Dryas were intervals of reduced runoff and increased aeolian activity. The wetter climate of central-northern Mexico and arid conditions in north-northwestern Mexico during the late last glacial were probably related to formation of tropical cyclones in the eastern North Pacific during the autumn with restricted rainfall swaths and an absent/weaker North American Monsoon. Enhanced North American Monsoon and tropical cyclones with expanded rainfall swaths brought more summer and autumn precipitation to a broader region extending from the central-northern Mexico to the continental interiors of southwestern US during the early Holocene.
KW - Geochemistry
KW - Late last glacial-Holocene
KW - Mexico
KW - North American Monsoon
KW - Paleoclimate
KW - Subtropical North America
KW - Tropical Cyclone
UR - http://www.scopus.com/inward/record.url?scp=84983188881&partnerID=8YFLogxK
U2 - 10.1016/j.yqres.2015.10.002
DO - 10.1016/j.yqres.2015.10.002
M3 - Artículo
SN - 0033-5894
VL - 84
SP - 335
EP - 347
JO - Quaternary Research (United States)
JF - Quaternary Research (United States)
IS - 3
ER -