Laura E Beramendi-Orosco
Biographic Data
| ID | 4130101 |
|---|---|
| NAME | Laura E Beramendi-Orosco |
| GIVEN NAMES | Laura E |
| FAMILY NAME | Beramendi-Orosco |
| SIGNATURE | BERAMENDI-OROSCO L E |
| AFFILIATIONS | Universidad Nacional Autonoma de Mexico |
| ORCID | 0000-0002-6790-1378 |
| VERIFIED | Yes |
| TOTAL WORKS | 12 |
| TOTAL CITATIONS | 18 |
| AUTHOR COUNT | 12 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2006 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 3 |
Chronology of the Post-Teotihuacan Occupations in the Teotihuacan Valley
Understanding what happened after the collapse of and dating the different reoccupations of Teotihuacan can be challenging due to different factors, including the reuse of building materials and looting during Postclassic and modern times, which resulted in altered archaeological contexts or significant inbuilt ages for the samples. A Bayesian approach integrating radiocarbon ages and detailed archaeological information can help to overcome these…
Changes in Fossil Co 2 Emissions in Mexico City During the Covid-19 Lockdown Deduced From Atmospheric Radiocarbon Concentrations
We present atmospheric radiocarbon concentrations in CO 2 integrated samples taken between January 2019 and December 2021 in the Mexico City Metropolitan Area (MCMA) and explain the variations in terms of changes in emission sources associated with the COVID-19 lockdown restrictions imposed from March 2020. Δ 14 C values for samples collected during 2019 range between –44.15‰ and –13.17‰, with lower values during months with higher fossil fuels c…
Palynological analysis of an archaeological chinampa in Xochimilco (Basin of Mexico). Construction technology and agricultural production
A High-Resolution Chronology for the Palatial Complex of Xalla in Teotihuacan, Mexico, Combining Radiocarbon Ages and Archaeomagnetic Dates in a Bayesian Model
Teotihuacan is one of the most studied archaeological sites in Mesoamerica because of its exceptional size and urban planning; however, its last years of occupation and abandonment are still under debate. We report a high-resolution chronology for the Xalla complex integrating archaeomagnetic dates, radiocarbon ( 14 C) ages, and detailed archaeological information about sample type and context in a Bayesian model. The model includes 42 14 C ages …
Changes in CO 2 Emission Sources in Mexico City Metropolitan Area Deduced from Radiocarbon Concentrations in Tree Rings
We present radiocarbon ( 14 C) in tree rings from Mexico City and a reconstruction of fossil CO 2 concentrations for the last five decades, as part of a research program to understand the 14 C dynamics in this complex urban area. Background values were established by 14 C concentrations in tree rings from a nearby clean area. Agreement between background and NH-zone 2 values indicate Taxodium mucronatum is a good biomonitor for annual atmospheric…
Paleohydrology of the Santiaguillo Basin (Mexico) since late last glacial and climate variation in southern part of western subtropical North America
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 …
Climatic variability in the northern sector of the American tropics since the latest MIS 3
We inferred millennial-scale climate variations and paleohydrological conditions in the northern sector of the American tropics for 30.3–5.5 cal ka BP using geochemical characteristics of sediments from Lake Chalco in central Mexico. The sediment sequence is chronologically constrainedwith three tephra and nine radiocarbon dates. Temporal variations in titanium, total inorganic carbon, total organic carbon/titanium ratio, carbon/nitrogen ratio, a…
Dendrochronological Potential of Fraxinus Uhdei and Its Use as Bioindicator of Fossil CO 2 Emissions Deduced from Radiocarbon Concentrations in Tree Rings
Dendrochronological studies are limited in tropical regions because not many tree species form annual growth rings. This work reports an evaluation of the dendrochronological potential of tropical ash ( Fraxinus uhdei ) and its use as a bioindicator of fossil CO 2 concentration in urban areas by means of radiocarbon analysis on growth rings. We analyzed a cross-section of a tree that grew during the period 1932–2007 in San Luis Potosí, one of the…
Rock‐Magnetic and Archaeointensity Investigation of Pottery and a Burned Floor at the Tzintzuntzan Archaeological Site, Western Mexico
We report a detailed rock‐magnetic and archaeointensity analysis of four pottery fragments and a burned floor recovered from the Tzintzuntzan archaeological site in western Mexico. Results from rock‐magnetic experiments (x‐T curves and first‐order reversal curves [FORC] diagrams) indicate the suitability of most of these materials as faithful geomagnetic field recorders. Potsherds were archaeomagnetically dated by comparing their mean intensity v…
Modern Radiocarbon Levels for Northwestern Mexico Derived from Tree Rings: A Comparison with Northern Hemisphere Zones 2 and 3 Curves
The radiocarbon variation for northwestern Mexico during the period 1950–2004 was studied by accelerator mass spectrometry (AMS) and liquid scintillation counting (LSC) analyses of tree rings. Two tree-ring sequences of Pseudotsuga menziesii, sampled in a site isolated from urban centers and active volcanoes (26.18°N, 106.3°W, 3000 m asl), were dendrochronologically dated and separated in annual rings prior to 14 C analysis. Results obtained show…
High-resolution chronology for the Mesoamerican urban center of Teotihuacan derived from Bayesian statistics of radiocarbon and archaeological data
A high-resolution 14 C chronology for the Teopancazco archaeological site in the Teotihuacan urban center of Mesoamerica was generated by Bayesian analysis of 33 radiocarbon dates and detailed archaeological information related to occupation stratigraphy, pottery and archaeomagnetic dates. The calibrated intervals obtained using the Bayesian model are up to ca. 70% shorter than those obtained with individual calibrations. For some samples, this i…
Radiocarbon Laboratory at the National Autonomous University of Mexico: First Set of Samples and New 14 C Internal Reference Material
This contribution reports the first set of samples and the creation of an internal reference material at the recently opened Radiocarbon Laboratory at the National Autonomous University of Mexico (UNAM). Samples for the initial measurements were selected from archaeological and dating projects on Teotihuacán, one of the largest and best-studied Mesoamerican urban and ceremonial centers. The 14 C dates were compared to results obtained by 2 other …
Radiocarbon Laboratory at the National Autonomous University of Mexico: First Set of Samples and New 14 C Internal Reference Material
This contribution reports the first set of samples and the creation of an internal reference material at the recently opened Radiocarbon Laboratory at the National Autonomous University of Mexico (UNAM). Samples for the initial measurements were selected from archaeological and dating projects on Teotihuacán, one of the largest and best-studied Mesoamerican urban and ceremonial centers. The 14 C dates were compared to results obtained by 2 other …
Modern Radiocarbon Levels for Northwestern Mexico Derived from Tree Rings: A Comparison with Northern Hemisphere Zones 2 and 3 Curves
The radiocarbon variation for northwestern Mexico during the period 1950–2004 was studied by accelerator mass spectrometry (AMS) and liquid scintillation counting (LSC) analyses of tree rings. Two tree-ring sequences of Pseudotsuga menziesii, sampled in a site isolated from urban centers and active volcanoes (26.18°N, 106.3°W, 3000 m asl), were dendrochronologically dated and separated in annual rings prior to 14 C analysis. Results obtained show…
Rock‐Magnetic and Archaeointensity Investigation of Pottery and a Burned Floor at the Tzintzuntzan Archaeological Site, Western Mexico
We report a detailed rock‐magnetic and archaeointensity analysis of four pottery fragments and a burned floor recovered from the Tzintzuntzan archaeological site in western Mexico. Results from rock‐magnetic experiments (x‐T curves and first‐order reversal curves [FORC] diagrams) indicate the suitability of most of these materials as faithful geomagnetic field recorders. Potsherds were archaeomagnetically dated by comparing their mean intensity v…
A High-Resolution Chronology for the Palatial Complex of Xalla in Teotihuacan, Mexico, Combining Radiocarbon Ages and Archaeomagnetic Dates in a Bayesian Model
Teotihuacan is one of the most studied archaeological sites in Mesoamerica because of its exceptional size and urban planning; however, its last years of occupation and abandonment are still under debate. We report a high-resolution chronology for the Xalla complex integrating archaeomagnetic dates, radiocarbon ( 14 C) ages, and detailed archaeological information about sample type and context in a Bayesian model. The model includes 42 14 C ages …
Changes in CO 2 Emission Sources in Mexico City Metropolitan Area Deduced from Radiocarbon Concentrations in Tree Rings
We present radiocarbon ( 14 C) in tree rings from Mexico City and a reconstruction of fossil CO 2 concentrations for the last five decades, as part of a research program to understand the 14 C dynamics in this complex urban area. Background values were established by 14 C concentrations in tree rings from a nearby clean area. Agreement between background and NH-zone 2 values indicate Taxodium mucronatum is a good biomonitor for annual atmospheric…
Dendrochronological Potential of Fraxinus Uhdei and Its Use as Bioindicator of Fossil CO 2 Emissions Deduced from Radiocarbon Concentrations in Tree Rings
Dendrochronological studies are limited in tropical regions because not many tree species form annual growth rings. This work reports an evaluation of the dendrochronological potential of tropical ash ( Fraxinus uhdei ) and its use as a bioindicator of fossil CO 2 concentration in urban areas by means of radiocarbon analysis on growth rings. We analyzed a cross-section of a tree that grew during the period 1932–2007 in San Luis Potosí, one of the…
Radiocarbon Laboratory at the National Autonomous University of Mexico: First Set of Samples and New 14 C Internal Reference Material
This contribution reports the first set of samples and the creation of an internal reference material at the recently opened Radiocarbon Laboratory at the National Autonomous University of Mexico (UNAM). Samples for the initial measurements were selected from archaeological and dating projects on Teotihuacán, one of the largest and best-studied Mesoamerican urban and ceremonial centers. The 14 C dates were compared to results obtained by 2 other …
High-resolution chronology for the Mesoamerican urban center of Teotihuacan derived from Bayesian statistics of radiocarbon and archaeological data
A high-resolution 14 C chronology for the Teopancazco archaeological site in the Teotihuacan urban center of Mesoamerica was generated by Bayesian analysis of 33 radiocarbon dates and detailed archaeological information related to occupation stratigraphy, pottery and archaeomagnetic dates. The calibrated intervals obtained using the Bayesian model are up to ca. 70% shorter than those obtained with individual calibrations. For some samples, this i…
Modern Radiocarbon Levels for Northwestern Mexico Derived from Tree Rings: A Comparison with Northern Hemisphere Zones 2 and 3 Curves
The radiocarbon variation for northwestern Mexico during the period 1950–2004 was studied by accelerator mass spectrometry (AMS) and liquid scintillation counting (LSC) analyses of tree rings. Two tree-ring sequences of Pseudotsuga menziesii, sampled in a site isolated from urban centers and active volcanoes (26.18°N, 106.3°W, 3000 m asl), were dendrochronologically dated and separated in annual rings prior to 14 C analysis. Results obtained show…
Rock‐Magnetic and Archaeointensity Investigation of Pottery and a Burned Floor at the Tzintzuntzan Archaeological Site, Western Mexico
We report a detailed rock‐magnetic and archaeointensity analysis of four pottery fragments and a burned floor recovered from the Tzintzuntzan archaeological site in western Mexico. Results from rock‐magnetic experiments (x‐T curves and first‐order reversal curves [FORC] diagrams) indicate the suitability of most of these materials as faithful geomagnetic field recorders. Potsherds were archaeomagnetically dated by comparing their mean intensity v…
Dendrochronological Potential of Fraxinus Uhdei and Its Use as Bioindicator of Fossil CO 2 Emissions Deduced from Radiocarbon Concentrations in Tree Rings
Dendrochronological studies are limited in tropical regions because not many tree species form annual growth rings. This work reports an evaluation of the dendrochronological potential of tropical ash ( Fraxinus uhdei ) and its use as a bioindicator of fossil CO 2 concentration in urban areas by means of radiocarbon analysis on growth rings. We analyzed a cross-section of a tree that grew during the period 1932–2007 in San Luis Potosí, one of the…
Paleohydrology of the Santiaguillo Basin (Mexico) since late last glacial and climate variation in southern part of western subtropical North America
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 …
Climatic variability in the northern sector of the American tropics since the latest MIS 3
We inferred millennial-scale climate variations and paleohydrological conditions in the northern sector of the American tropics for 30.3–5.5 cal ka BP using geochemical characteristics of sediments from Lake Chalco in central Mexico. The sediment sequence is chronologically constrainedwith three tephra and nine radiocarbon dates. Temporal variations in titanium, total inorganic carbon, total organic carbon/titanium ratio, carbon/nitrogen ratio, a…
Changes in CO 2 Emission Sources in Mexico City Metropolitan Area Deduced from Radiocarbon Concentrations in Tree Rings
We present radiocarbon ( 14 C) in tree rings from Mexico City and a reconstruction of fossil CO 2 concentrations for the last five decades, as part of a research program to understand the 14 C dynamics in this complex urban area. Background values were established by 14 C concentrations in tree rings from a nearby clean area. Agreement between background and NH-zone 2 values indicate Taxodium mucronatum is a good biomonitor for annual atmospheric…
A High-Resolution Chronology for the Palatial Complex of Xalla in Teotihuacan, Mexico, Combining Radiocarbon Ages and Archaeomagnetic Dates in a Bayesian Model
Teotihuacan is one of the most studied archaeological sites in Mesoamerica because of its exceptional size and urban planning; however, its last years of occupation and abandonment are still under debate. We report a high-resolution chronology for the Xalla complex integrating archaeomagnetic dates, radiocarbon ( 14 C) ages, and detailed archaeological information about sample type and context in a Bayesian model. The model includes 42 14 C ages …
Palynological analysis of an archaeological chinampa in Xochimilco (Basin of Mexico). Construction technology and agricultural production
Changes in Fossil Co 2 Emissions in Mexico City During the Covid-19 Lockdown Deduced From Atmospheric Radiocarbon Concentrations
We present atmospheric radiocarbon concentrations in CO 2 integrated samples taken between January 2019 and December 2021 in the Mexico City Metropolitan Area (MCMA) and explain the variations in terms of changes in emission sources associated with the COVID-19 lockdown restrictions imposed from March 2020. Δ 14 C values for samples collected during 2019 range between –44.15‰ and –13.17‰, with lower values during months with higher fossil fuels c…
Chronology of the Post-Teotihuacan Occupations in the Teotihuacan Valley
Understanding what happened after the collapse of and dating the different reoccupations of Teotihuacan can be challenging due to different factors, including the reuse of building materials and looting during Postclassic and modern times, which resulted in altered archaeological contexts or significant inbuilt ages for the samples. A Bayesian approach integrating radiocarbon ages and detailed archaeological information can help to overcome these…
Geography (11 works) · Radiocarbon dating (11 works) · Geology (8 works) · Archaeology (7 works) · Archaeology and ancient environmental studies (7 works) · Geology and Paleoclimatology Research (7 works) · Physical geography (6 works) · Atmospheric sciences (4 works) · Archaeomagnetic dating (3 works) · Biology (3 works)