Multiple thermochronometers applied to the quantitative analysis of compressive systems: The southern sub-Andean fold and thrust belt of Bolivia. From source rock to trap

Abstract

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Structural Evolution of the Northern Agrio Fold and Trust Belt (∼37°30′S), Neuquén Basin, Argentina, Derived From Low‐Temperature Multi‐Thermochronometry

“…Thermochronological studies in FTBs allow calculating exhumation rates, by combining the cooling rates obtained from inverse thermal modeling and the paleo‐geothermal gradients (known or assumed) for the region (e.g., Galletto et al., 2021; Hernandez et al., 2020; Lossada et al., 2023). In the Domuyo region (∼36°30′S, Figures 9a), Galleto et al.…”

“…The integration of structural data and multi‐thermochronometric techniques has been used to characterize and quantify the thermal and kinematic development of FTBs in different orogens across the globe (e.g., Castellucio et al., 2015; De Celles et al., 2020; Hernandez et al., 2020; Lock & Willett, 2008; McQuarrie & Ehlers, 2017; Mora et al., 2015). In particular, the utilization of thermochronometric methods, such as apatite fission track analysis (AFT), along with (U‐Th)/He dating methods (AHe and ZHe, respectively) enables the reconstruction of thermal histories within the uppermost approximately 10 km of the continental crust.…”

Crustal Thickening of the Northern Central Andean Plateau Inferred From Trace Elements in Zircon

“…The greater Andean orogen is the archetype Cordilleran orogenic system on Earth in the modern, and determining the crustal growth history is valuable to testing wholistic models of plateau development and explaining the relationships between crustal shortening, magmatism, basin development, surface uplift, and climate. Although earlier studies suggest a shortening deficit at most latitudes of the Central Andes (Hindle et al., 2005; Kley & Monaldi, 1998), more recent studies show that shortening can account for most crustal thickening (e.g., Hernandez et al., 2021). Still, the timing of crustal thickening remains an outstanding question in the northern CAP because the region is mantled by Cenozoic volcanic rocks, thus precluding detailed structural analysis as has been done farther to the south (e.g., Anderson et al., 2017).…”

“…Although earlier studies suggest a shortening deficit at most latitudes of the Central Andes (Hindle et al, 2005;Kley & Monaldi, 1998), more recent studies show that shortening can account for most crustal thickening (e.g., Hernandez et al, 2021). Still, the timing of crustal thickening remains an outstanding question in the northern CAP because the region is mantled by Cenozoic volcanic rocks, thus precluding detailed structural analysis as has been done farther to the south (e.g., Anderson et al, 2017).…”

Structural evolution of the superimposed Provençal and Subalpine fold-thrust belts (SE France)

“…Low-temperature thermochronology methods which are used to constrain the chronology of thrust propagation as in many fold-thrust belts (e.g., Ege et al, 2007;Jolivet et al, 2007;Espurt et al, 2011;Parra et al, 2012;Labaume et al, 2016;Rat et al, 2019;Hernandez et al, 2020), are poorly applicable in the study area because the Provençal and Subalpine thrust wedges have experienced insufficient Cenozoic burial and the exhumation history of the inner crystalline basement of the Provençal belt has been erased by the thermal event related to the Oligocene-Miocene Ligurian-Provençal rift (Lucazeau and Mailhe, 1986;Machhour et al, 1994;Morillon, 1997;Jakni, 2000;Bestani, 2015). The study of syn-tectonic strata with growth stratal pattern deposited during contractional deformations remains thus essential for reconstructing the chronology of successive deformational events, thrust propagation, and foreland basin evolution (Vergés and Munoz, 1990).…”