A lost Tethyan evaporitic basin: Evidence from a Cretaceous hemipelagic meta‐selenite – red chert association in the Eastern Mediterranean realm
A lost Tethyan evaporitic basin: Evidence from a Cretaceous hemipelagic meta‐selenite – red chert association in the Eastern Mediterranean realm
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失落的特提斯蒸发盆地：来自东地中海地区白垩纪半远洋变亚硒酸盐/红燧石组合的证据
DOI：
10.1111/sed.12606
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发表时间：
2019
期刊：
影响因子：
3.5
通讯作者：
Roland Oberhänsli
中科院分区：
文献类型：
--
作者：
Franziska Scheffler;Adrian Immenhauser;Amaury Pourteau;Osman Candan;Roland Oberhänsli
古蒸发岩沉积是以长期负降水平衡为特征的沉积环境的地质档案，为全球海洋元素质量平衡计算提供了依据。在这里，来自安纳托利亚西部的白垩纪亚硒酸盐伪形态（“罗塞塔大理石”）——以其特殊的形态保存为特征——及其“海洋”地球化学特征在过程导向的背景下被描述和解释。这些岩石记录了晚白垩世高压/低温、俯冲相关的变质作用，峰值条件为1.0 ~ 1.2 GPa，温度为300 ~ 400℃。米尺度，岩石形成辐射棒，现在以纤维方解石大理石的形式存在，清楚地表明亚硒酸石膏是前体矿物。沿着重建的近端至远端样带记录地层序列。亚硒酸盐层和放射虫带状层状燧石岩在远端部分的周期性交替被解释为两种类型的海水体系。在干旱间歇期，浅海盐水呈瀑布状向下流入盆地并诱导降水。在较潮湿的时期，上升流引起的放射虫华导致放射虫相沉积。有趣的是，在新生代世界中没有类似的沉积环境。重建中白垩世海水特征范围内的亚硒酸盐地球化学数据（δ13C、δ18O和87sr /86Sr）图。13c富集（平均2.2‰）值的可能来源包括甲烷生成、天然气水合物和冷渗流体呼出。空间分辨组分分析显示亚硒酸盐晶体（平均δ 13c为2·2‰）与宿主基质（平均δ 13c为1·3‰）之间存在同位素差异。白垩纪安纳托利亚的蒸发岩与原大西洋的阿普提亚蒸发岩是同一时期的全盆地蒸发岩，其横向分布为600 km，地层厚度为1.5 ~ 2.0 km，形成于较年轻的墨西尼亚盐度危机时期。安那托利亚的罗塞塔大理石可能是世界上保存最完好的亚硒酸盐伪形态，具有作为深时间亚硒酸盐研究模板的明显潜力。
Ancient evaporite deposits are geological archives of depositional environments characterized by a long‐term negative precipitation balance and bear evidence for global ocean element mass balance calculations. Here, Cretaceous selenite pseudomorphs from western Anatolia (‘Rosetta Marble’) — characterized by their exceptional morphological preservation — and their ‘marine’ geochemical signatures are described and interpreted in a process‐oriented context. These rocks recorded Late Cretaceous high‐pressure/low‐temperature, subduction‐related metamorphism with peak conditions of 1·0 to 1·2 GPa and 300 to 400°C. Metre‐scale, rock‐forming radiating rods, now present as fibrous calcite marble, clearly point to selenitic gypsum as the precursor mineral. Stratigraphic successions are recorded along a reconstructed proximal to distal transect. The cyclical alternation of selenite beds and radiolarian ribbon‐bedded cherts in the distal portions are interpreted as a two type of seawater system. During arid intervals, shallow marine brines cascaded downward into basinal settings and induced precipitation. During more humid times, upwelling‐induced radiolarian blooms caused the deposition of radiolarite facies. Interestingly, there is no comparable depositional setting known from the Cenozoic world. Meta‐selenite geochemical data (δ13C,δ18O and87Sr/86Sr) plot within the range of reconstructed middle Cretaceous seawater signatures. Possible sources for the13C‐enriched (mean 2·2‰) values include methanogenesis, gas hydrates and cold seep fluid exhalation. Spatially resolved component‐specific analysis of a rock slab displays isotopic variances between meta‐selenite crystals (meanδ13C 2·2‰) and host matrix (meanδ13C 1·3‰). The Cretaceous evaporite‐pseudomorphs of Anatolia represent a basin wide event coeval with the Aptian evaporites of the Proto‐Atlantic and the pseudomorphs share many attributes, including lateral distribution of 600 km and stratigraphic thickness of 1·5 to 2·0 km, with the evaporites formed during the younger Messinian salinity crisis. The Rosetta Marble of Anatolia may represent the best‐preserved selenite pseudomorphs worldwide and have a clear potential to act as a template for the study of meta‐selenite in deep time.
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影响因子：
2.9
作者：
N. Seaton;D. Whitney;C. Teyssier;E. Toraman;M. Heizler
通讯作者：
N. Seaton;D. Whitney;C. Teyssier;E. Toraman;M. Heizler
蒙费拉托（意大利西北部）的新生代 CH4 衍生碳酸盐：沉积柱中流体循环的可靠证据
DOI：
--
发表时间：
2009
期刊：
影响因子：
--
作者：
P. Clari;F. Pierre;L. Martire;Simona Cavagna
通讯作者：
Simona Cavagna
中新世原生石膏的锶地球化学；
DOI：
--
发表时间：
1998
期刊：
影响因子：
--
作者：
L. Rosell;F. Ortí;A. Kasprzyk;E. Playà;T. Peryt
通讯作者：
T. Peryt
扭曲的折返：古地磁对土耳其西部门德雷斯变质核杂岩演化的限制
DOI：
--
发表时间：
2010
期刊：
影响因子：
--
作者：
D. V. van Hinsbergen;M. Dekkers;E. Bozkurt;Marijn Koopman
通讯作者：
Marijn Koopman
第三纪皮埃蒙特盆地（意大利西北部）麦西尼亚盐度危机的记录：重新审视阿尔巴部分
DOI：
--
发表时间：
2011
期刊：
影响因子：
--
作者：
F. Pierre;E. Bernardi;Simona Cavagna;P. Clari;R. Gennari;A. Irace;F. Lozar;S. Lugli;V. Manzi;M. Natalicchio;M. Roveri;D. Violanti
通讯作者：
D. Violanti