DOI: 10.1007/s00531-015-1214-y
Scopus记录号: 2-s2.0-84954386044
论文题名: Sedimentologic to metamorphic processes recorded in the high-pressure/low-temperature Mesozoic Rosetta Marble of Anatolia
作者: Scheffler F. ; Oberhänsli R. ; Pourteau A. ; Immenhauser A. ; Candan O.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2016
卷: 105, 期: 1 起始页码: 225
结束页码: 246
语种: 英语
英文关键词: Anatolia
; Gypsum
; High-pressure metamorphism
; Neotethys
Scopus关键词: gypsum
; high pressure
; low temperature
; marble
; Mesozoic
; metamorphism
; pseudomorph
; sedimentology
; selenite
; Tethys
; Anatolia
; Turkey
英文摘要: Anatolia’s high-pressure metamorphic belts are characterized in part by a Neotethyan stratigraphic succession that includes a mid-Cretaceous hemi-pelagic marble sequence. This unit contains, towards its stratigraphic top, dm-to-m-long radiating calcitic rods forming rosette-like textures. Here, we refer to these features as “Rosetta Marble”. The remarkable textural similarity of non-metamorphic selenite crystals and radiating calcite rods in the Rosetta Marble strongly suggests that these textures represent pseudomorphs after selenites. Metamorphosed hemi-pelagic limestones, dominated by Rosetta selenite pseudomorphs, are alternating with siliceous meta-sediments containing relictic radiolaria tests. This stratigraphic pattern is indicative of transient phases characterized by evaporites precipitated from basinal brines alternating with non-evaporative hemi-pelagic deposition from normal-marine seawater. The regional distribution of Rosetta Marble exposures over 600 km is indicative of basin-scale evaporitic intervals. High-pressure, low-temperature metamorphism of these rocks is witnessed by Sr-rich (up to 3500 ppm), fibrous calcite pseudomorphs after aragonite and isolated aragonite inclusions in quartz. Peak metamorphic conditions of 1.2 GPa and 300–350 °C are attested by high-Si white mica thermobarometry. The Rosetta Marble case example examines the potential to unravel the complete history from deposition to diagenesis and metamorphism of meta-sedimentary rocks. © 2015, Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84954386044&doi=10.1007%2fs00531-015-1214-y&partnerID=40&md5=90dc43feaf5decb2d8f5b40d48da02bb
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70218
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Institute of Earth and Environmental Science, University of Potsdam, Potsdam-Golm, Germany; Institute of Geology, Mineralogy and Geophysics, Ruhr-University Bochum, Bochum, Germany; Department of Geological Engineering, Dokuz Eylül Üniversitesi, Bornova, İzmir, Turkey
Recommended Citation:
Scheffler F.,Oberhänsli R.,Pourteau A.,et al. Sedimentologic to metamorphic processes recorded in the high-pressure/low-temperature Mesozoic Rosetta Marble of Anatolia[J]. International Journal of Earth Sciences,2016-01-01,105(1)