Evidence of Holocene climatic changes from aeolian deposits in Baja California Sur, Mexico

Janette M. Murillo De Nava, Donn S. Gorsline, Glenn A. Goodfriend, V. K. Vlasov, Rodolfo Cruz-Orozco

Research output: Contribution to journalArticleResearchpeer-review

17 Citations (Scopus)

Abstract

Well-defined Late Pleistocene and Holocene dune fields are present on the surface of the Purisima-Iray Magdalena sedimentary basin and on top of barrier islands of the Magdalena Lagoonal Complex in Baja California Sur, Mexico. Thermoluminescence, amino acid epimerization, and radiocarbon techniques were used for dating dune sands and shell samples respectively. During Late Pleistocene to early Holocene (14 to 8 ka BP) mega-barchans and linear dunes were formed. During early Holocene through middle Holocene (warm-dry climate) dune fields were still active. At about 5 to 6 ka BP the stabilization of sea level developed the present lagoonal system in the area. Sandy barrier islands capped by foredunes were developed. At this time coastal dunes were eroded, and in part inundated, forming large flooding flats and sabkha deposits in the old inter-dune areas. During late Holocene, after the lagoonal system was fully developed, dunes were emplaced along the lagoonal coasts. The presence of some younger dates in older deposits seems to represent dune reactivation.
Original languageAmerican English
Pages (from-to)141-154
Number of pages125
JournalQuaternary International
DOIs
StatePublished - 1 Jan 1999
Externally publishedYes

Fingerprint

Lower California (Mexico)
dunes
eolian deposit
Mexico
dune
Deposits
deposits
Holocene
climate change
Thermoluminescence
Sea level
Coastal zones
Amino acids
dune field
Sand
Stabilization
barrier island
Amino Acids
Pleistocene
barchan

Cite this

Murillo De Nava, Janette M. ; Gorsline, Donn S. ; Goodfriend, Glenn A. ; Vlasov, V. K. ; Cruz-Orozco, Rodolfo. / Evidence of Holocene climatic changes from aeolian deposits in Baja California Sur, Mexico. In: Quaternary International. 1999 ; pp. 141-154.
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abstract = "Well-defined Late Pleistocene and Holocene dune fields are present on the surface of the Purisima-Iray Magdalena sedimentary basin and on top of barrier islands of the Magdalena Lagoonal Complex in Baja California Sur, Mexico. Thermoluminescence, amino acid epimerization, and radiocarbon techniques were used for dating dune sands and shell samples respectively. During Late Pleistocene to early Holocene (14 to 8 ka BP) mega-barchans and linear dunes were formed. During early Holocene through middle Holocene (warm-dry climate) dune fields were still active. At about 5 to 6 ka BP the stabilization of sea level developed the present lagoonal system in the area. Sandy barrier islands capped by foredunes were developed. At this time coastal dunes were eroded, and in part inundated, forming large flooding flats and sabkha deposits in the old inter-dune areas. During late Holocene, after the lagoonal system was fully developed, dunes were emplaced along the lagoonal coasts. The presence of some younger dates in older deposits seems to represent dune reactivation.",
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Evidence of Holocene climatic changes from aeolian deposits in Baja California Sur, Mexico. / Murillo De Nava, Janette M.; Gorsline, Donn S.; Goodfriend, Glenn A.; Vlasov, V. K.; Cruz-Orozco, Rodolfo.

In: Quaternary International, 01.01.1999, p. 141-154.

Research output: Contribution to journalArticleResearchpeer-review

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