Altered volcanic ash layers of the Late Cretaceous San Felipe Formation, Sierra Madre Oriental (Northeastern Mexico): U Pb geochronology, provenance and tectonic setting

2016 ◽  
Vol 70 ◽  
pp. 18-35 ◽  
Author(s):  
Fernando Velasco-Tapia ◽  
Margarita Martínez-Paco ◽  
Alexander Iriondo ◽  
Yam Zul Ernesto Ocampo-Díaz ◽  
Esther María Cruz-Gámez ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
Volcanic Ash ◽  
Tectonic Setting ◽  
Sierra Madre Oriental ◽  
Sierra Madre ◽  
Northeastern Mexico

Estimation of rainfall thresholds for shallow landslides in the Sierra Madre Oriental, northeastern Mexico

2020 ◽  
Vol 17 (7) ◽  
pp. 1565-1580
Author(s):  
Jorge A. Salinas-Jasso ◽  
Fernando Velasco-Tapia ◽  
Ignacio Navarro de León ◽  
Ricardo A. Salinas-Jasso ◽  
Efraín Alva-Niño
Keyword(s):  
Shallow Landslides ◽  
Rainfall Thresholds ◽  
Sierra Madre Oriental ◽  
Sierra Madre ◽  
Northeastern Mexico

scholarly journals High-precision U–Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic–Cretaceous boundary

Solid Earth ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 1-14 ◽  
Author(s):  
Luis Lena ◽  
Rafael López-Martínez ◽  
Marina Lescano ◽  
Beatriz Aguire-Urreta ◽  
Andrea Concheyro ◽  
...  
Keyword(s):  
High Precision ◽  
Volcanic Ash ◽  
Sedimentary Basins ◽  
Geochronological Data ◽  
Minimum Duration ◽  
Sierra Madre Oriental ◽  
Sierra Madre ◽  
Neuquen Basin ◽  
Neuquén Basin ◽  
Age Determinations

Abstract. The numerical age of the Jurassic–Cretaceous boundary has been controversial and difficult to determine. In this study, we present high-precision U–Pb geochronological data around the Jurassic–Cretaceous boundary in two distinct sections from different sedimentary basins: the Las Loicas, Neuquén Basin, Argentina, and the Mazatepec, Sierra Madre Oriental, Mexico. These two sections contain primary and secondary fossiliferous markers for the boundary as well as interbedded volcanic ash horizons, allowing researchers to obtain new radioisotopic dates in the late Tithonian and early Berriasian. We also present the first age determinations in the early Tithonian and tentatively propose a minimum duration for the stage as a cross-check for our ages in the early Berriasian. Given our radioisotopic ages in the early Tithonian to early Berriasian, we discuss implications for the numerical age of the boundary.

TIMING OF THICK-SKINNED EXHUMATION IN THE POTOSÍ UPLIFT, SIERRA MADRE ORIENTAL, NORTHEASTERN MEXICO

2018 ◽  
Author(s):  
Michael G. Prior ◽  
◽  
John S. Singleton ◽  
Stewart Williams ◽  
Skyler Mavor
Keyword(s):  
Sierra Madre Oriental ◽  
Sierra Madre ◽  
Northeastern Mexico
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