Cenozoic Structurally Controlled Hydrothermal Activity Revealed by Apatite Thermochronology in the Convoy Range (Southern Victoria Land, Antarctica) DOI Creative Commons
Marco Fioraso, Valerio Olivetti, Fabrizio Balsamo

et al.

Geochemistry Geophysics Geosystems, Journal Year: 2025, Volume and Issue: 26(4)

Published: April 1, 2025

Abstract The Transantarctic Mountains form the longest and highest extensional mountain range on Earth, marking boundary between Antarctic craton Mesozoic‐Cenozoic rifted Ross Sea lithosphere. During Cenozoic, deep offshore troughs, such as Terror Rift, developed at front of in response to transtensional dextral kinematics that overprinted an older phase orthogonal rifting. On land, few direct age constraints Cenozoic faulting exist, evidence fault activity is often inferred from fission track dating. In this study, we focused Convoy Range block southern Victoria Land, a region with limited field surveys thermochronological data. We present results multiscale structural analysis, geothermometry, apatite fission‐track thermochronology aimed reconstructing architecture timing deformation. pattern dominated mainly by nearly N‐S striking normal faults, subordinate system right‐lateral faults. Brittle deformation accompanied diffuse propylitic alteration carbonatization, providing hydrothermal fluid‐rock interaction mesothermal environment (∼175–325°C). Fission ages rocks young ∼23 Ma are interpreted local thermal resetting along potentially constraining These document case structurally controlled fluid flow coeval reactivation important implications for onset volcanism region.

Language: Английский

Monsoonal imprint on late Quaternary landscapes of the Rub’ al Khali Desert DOI Creative Commons
Abdallah S. Zaki, Antoine Delaunay, Guillaume Baby

et al.

Communications Earth & Environment, Journal Year: 2025, Volume and Issue: 6(1)

Published: April 3, 2025

Language: Английский

Citations

0
Cenozoic Structurally Controlled Hydrothermal Activity Revealed by Apatite Thermochronology in the Convoy Range (Southern Victoria Land, Antarctica) DOI Creative Commons
Marco Fioraso, Valerio Olivetti, Fabrizio Balsamo

et al.

Geochemistry Geophysics Geosystems, Journal Year: 2025, Volume and Issue: 26(4)

Published: April 1, 2025

Abstract The Transantarctic Mountains form the longest and highest extensional mountain range on Earth, marking boundary between Antarctic craton Mesozoic‐Cenozoic rifted Ross Sea lithosphere. During Cenozoic, deep offshore troughs, such as Terror Rift, developed at front of in response to transtensional dextral kinematics that overprinted an older phase orthogonal rifting. On land, few direct age constraints Cenozoic faulting exist, evidence fault activity is often inferred from fission track dating. In this study, we focused Convoy Range block southern Victoria Land, a region with limited field surveys thermochronological data. We present results multiscale structural analysis, geothermometry, apatite fission‐track thermochronology aimed reconstructing architecture timing deformation. pattern dominated mainly by nearly N‐S striking normal faults, subordinate system right‐lateral faults. Brittle deformation accompanied diffuse propylitic alteration carbonatization, providing hydrothermal fluid‐rock interaction mesothermal environment (∼175–325°C). Fission ages rocks young ∼23 Ma are interpreted local thermal resetting along potentially constraining These document case structurally controlled fluid flow coeval reactivation important implications for onset volcanism region.

Language: Английский

Citations

0