TY - JOUR

T1 - Raman Spectroscopy of carbonaceous material thermometry in the Carnic Alps (Austria, Italy)

AU - Rantitsch, Gerd

N1 - Publisher Copyright: © 2024 Walter de Gruyter GmbH. All rights reserved.

PY - 2024/5/10

Y1 - 2024/5/10

N2 - The Carnic Alps (eastern Southern Alps) provide a classical area to study polyphase very-low- to low-grade metamorphism within the Variscan belt of Europe. Temperature indicators collected during the past three decades map the general metamorphic structure of a mountain chain affected by three major tectonic events (Variscan and Alpine thrusting, Oligocene transpression). Thermometric data obtained by Raman Spectroscopy of carbonaceous material (RSCM) described in this study extend the already published database, provide a map of metamorphic isotherms, and are interpreted in the view of current tectonic concepts. The RSCM temperatures of this study describe a gradient between ca. 460 °C in the tectonically deepest segments, bordered by the Periadriatic Fault System, and temperatures of ca. 200 °C in Permian-Triassic boundary strata of the Gartnerkofel-1 core. Mapped isotherms indicate three domains with different thermal histories, characterized by Variscan imbrication of an accretionary wedge, Permo-Mesozoic burial, and Oligocene contact metamorphism.

AB - The Carnic Alps (eastern Southern Alps) provide a classical area to study polyphase very-low- to low-grade metamorphism within the Variscan belt of Europe. Temperature indicators collected during the past three decades map the general metamorphic structure of a mountain chain affected by three major tectonic events (Variscan and Alpine thrusting, Oligocene transpression). Thermometric data obtained by Raman Spectroscopy of carbonaceous material (RSCM) described in this study extend the already published database, provide a map of metamorphic isotherms, and are interpreted in the view of current tectonic concepts. The RSCM temperatures of this study describe a gradient between ca. 460 °C in the tectonically deepest segments, bordered by the Periadriatic Fault System, and temperatures of ca. 200 °C in Permian-Triassic boundary strata of the Gartnerkofel-1 core. Mapped isotherms indicate three domains with different thermal histories, characterized by Variscan imbrication of an accretionary wedge, Permo-Mesozoic burial, and Oligocene contact metamorphism.

KW - Carnic Alps

KW - Metamorphism

KW - Raman Spectroscopy of carbonaceous material

KW - Southern Alps

UR - http://www.scopus.com/inward/record.url?scp=85193043372&partnerID=8YFLogxK

U2 - 10.17738/ajes.2024.0006

DO - 10.17738/ajes.2024.0006

M3 - Article

VL - 117.2024

SP - 73

EP - 86

JO - Austrian journal of earth sciences

JF - Austrian journal of earth sciences

SN - 0251-7493

IS - 1

ER -