Conodont thermometry by Raman spectroscopy on carbonaceous material: a case study from the Northern Calcareous Alps (Mürzalpen Nappe, Eastern Alps)
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In: Austrian journal of earth sciences, Vol. 113.2020, No. 2, 31.10.2020, p. 201-210.
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TY - JOUR
T1 - Conodont thermometry by Raman spectroscopy on carbonaceous material: a case study from the Northern Calcareous Alps (Mürzalpen Nappe, Eastern Alps)
AU - Rantitsch, Gerd
AU - Bryda, Gerhard
AU - Gawlick, Hans-Jürgen
N1 - Publisher Copyright: © 2020 Gerd RANTITSCH, Gerhard BRYDA, Hans-Jürgen GAWLICK, published by Sciendo.
PY - 2020/10/31
Y1 - 2020/10/31
N2 - Carnian metapelites from the southeastern segment of the Mürzalpen Nappe (Northern Calcareous Alps, Eastern Alps) were heated to 280-310 °C, estimated by Raman spectroscopy of carbonaceous material (RSCM). This temperature range is correlated to a Color Alteration Index of 5.0-6.5, determined on conodonts from adjacent Anisian to Norian carbonates. Average RSCM temperatures estimated on the conodonts are biased towards higher temperatures. The spectral characteristics of the conodont apatite suggest a composition altered during progressive recrystallization, influencing the band parameters of the included carbonaceous matter. Consequently, accurate conodont RSCM thermometry needs an assessment of apatite alteration.
AB - Carnian metapelites from the southeastern segment of the Mürzalpen Nappe (Northern Calcareous Alps, Eastern Alps) were heated to 280-310 °C, estimated by Raman spectroscopy of carbonaceous material (RSCM). This temperature range is correlated to a Color Alteration Index of 5.0-6.5, determined on conodonts from adjacent Anisian to Norian carbonates. Average RSCM temperatures estimated on the conodonts are biased towards higher temperatures. The spectral characteristics of the conodont apatite suggest a composition altered during progressive recrystallization, influencing the band parameters of the included carbonaceous matter. Consequently, accurate conodont RSCM thermometry needs an assessment of apatite alteration.
UR - http://www.scopus.com/inward/record.url?scp=85096939970&partnerID=8YFLogxK
U2 - 10.17738/ajes.2020.0012
DO - 10.17738/ajes.2020.0012
M3 - Article
VL - 113.2020
SP - 201
EP - 210
JO - Austrian journal of earth sciences
JF - Austrian journal of earth sciences
SN - 0251-7493
IS - 2
ER -
