Quantitative temperature recovery from middle Eocene halite fluid inclusions in the easternmost Tethys realm

Xu, Yang; Liu, Chenglin; Cao, Yali; Zhang, Hua

doi:10.1007/s00531-018-1648-0

Cited by 8 publications

(3 citation statements)

References 44 publications

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“…The T h of the primary single liquid-phase halite fluid inclusions distributed in cumulate and chevron halite crystal growth bands can reflect the temperature and variation characteristics of ancient brine during salt formation [21][22][23][24][25][26]. The T h recorded by halite fluid inclusions in shallow water is similar to atmospheric temperature, which is widely used in paleoclimate research [27][28][29][30][31][32]. The reliability of the T h index of halite fluid inclusions and the maturity of its testing technology are further explained.…”

Section: Introductionmentioning

confidence: 99%

Reconstruction of Polyhalite Ore-Formed Temperature from Late Middle Pleistocene Brine Temperature Research in Kunteyi Playa, Western China

Jun

Tang

et al. 2022

Geofluids

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Kunteyi Salt Lake (KSL), located in the northwest of the Qaidam Basin (QB), is rich in polyhalite resources. However, there is no relevant research on the ore-formed temperature of polyhalite in nature, such as KSL. The homogenization temperature ( T h ) of salt mineral inclusions can directly reveal the form temperature of minerals. In view of the poor diagenesis of polyhalite in KSL, almost no polyhalite crystals are formed. Therefore, the ore-formed temperature of polyhalite in KSL is revealed by using the T h of fluid inclusions in halite associated with polyhalite as a substitute index. A total of 472 T h data from 34 halite samples and 34 maximum homogenization temperature ( T hMAX ) data ranged from 17.1°C to 35.5°C, among which 24 data were concentrated at 17-23°C and the average value is 22.1°C. Brine temperature of other salt lakes in QB and paleoclimate characteristics of the study area were combined. It suggests that the temperature conditions of polyhalite mineralization in the study area are generally low. However, under the overall low-temperature background, polyhalite seems to be easily enriched at relatively high temperature; for example, the content of polyhalite is generally high in the first relatively dry and hot salt-forming period, and the brine temperature at the peak stage of polyhalite at 45 m is relatively high, which indicates that the high temperature conditions promote the formation of polyhalite in KSL. As far as the overall relationship between temperature and polyhalite is concerned, polyhalite is deposited at both low temperature and relatively high temperature, which verifies the previous understanding that polyhalite is a mineral with wide temperature phase, and also shows that temperature has a limited effect on polyhalite formation under natural conditions. In addition, combined with the chemical composition of halite fluid inclusions, it is found that the concentration of Mg2+ in nature has an influence on the temperature measurement process. According to the previous experimental research, speculate that the actual temperature of ancient brine and ore-formed temperature of polyhalite in KSL are lower than the measured T h . The confirmation of the influence of Mg2+ on temperature measurement is convenient for more accurate reconstruction of the metallogenic temperature of evaporite such as polyhalite. The research on the ore-formed temperature of KSL polyhalite enriches and perfects the polyhalite mineralization theory and provides theoretical basis for the basic and applied research of polyhalite.

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Section: Introductionmentioning

confidence: 99%

Reconstruction of Polyhalite Ore-Formed Temperature from Late Middle Pleistocene Brine Temperature Research in Kunteyi Playa, Western China

Jun

Tang

et al. 2022

Geofluids

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“…Note that with BS, FIs undergo considerably weaker stresses (approximately 4 times here) than with microthermometry. [Colour figure can be viewed at wileyonlinelibrary.com] Kovalevych et al 2009, Zambito and Benison 2013, Zhao et al 2014, Zhang et al 2015, Yang 2016, Zhang et al 2016, Xu et al 2019. Which of them is the best practice is still an unsettled debate.…”

mentioning

confidence: 99%

“…Since these early experiments, several practices can be found in the literature about the most relevant temperature value to use in palaeoclimate reconstructions: T h,max (Lowenstein et al , Meng et al , Meng et al , Sun et al ); T h,mean (Rigaudier et al , Speranza et al ); and various properties of the T h distribution (range, mean and extremes), meaning that every single T h has palaeoclimatic significance (Benison and Goldstein , Losey and Benison , Satterfield et al , b, Kovalevych et al , Zambito and Benison , Zhao et al , Zhang et al , Yang , Zhang et al , Zhang et al , Xu et al ). Which of them is the best practice is still an unsettled debate.…”

mentioning

confidence: 99%

Restoring Halite Fluid Inclusions as an Accurate Palaeothermometer: Brillouin Thermometry Versus Microthermometry

Guillerm

Gardien

Ariztegui

et al. 2020

Geostandard Geoanalytic Res

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Halite traps inclusions of the mother fluid when precipitating. When unchanged, the density of these fluid inclusions (FIs) records the water temperature T f at the time of crystal formation. As halite is ubiquitous on Earth and geological time, its FIs possess a high potential as temperature archives. However, the use of FIs in halite as an accurate palaeothermometer has been hampered due to limitations of microthermometry, the most commonly used analytical method. Here, we show how Brillouin spectroscopy in halite FIs bypasses these limitations and allows recovering T f to within 1 °C or less. To demonstrate this, we measured samples synthesised at 24.6 ± 0.5 °C and 33 ± 1 °C, and obtained 24.8 ± 0.4 °C and 31.9 ± 0.4 °C, respectively. This novel approach thus provides an accurate palaeothermometer for lacustrine and marine environments. Moreover, Brillouin spectroscopy solves the long-standing debate on damage of halite fluid inclusions through quantifying the acceptable temperature excursion for preserving elastic behaviour: [l/(1 µm)] -0.64 3 (90 °C), where l is the FI size. This threshold is lower for FIs close to the surface of the host crystal or to another FI. We also list 'best practices' for applying both microthermometry and Brillouin thermometry.

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Prospects for Eocene potash deposition in the East Tethyan domain: New evidence from fluid inclusions and chlorine isotope of halite crystals in the Kuqa Basin, NW China

Zou

et al. 2023

Ore Geology Reviews

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Quantitative temperature recovery from middle Eocene halite fluid inclusions in the easternmost Tethys realm

Cited by 8 publications

References 44 publications

Reconstruction of Polyhalite Ore-Formed Temperature from Late Middle Pleistocene Brine Temperature Research in Kunteyi Playa, Western China

Reconstruction of Polyhalite Ore-Formed Temperature from Late Middle Pleistocene Brine Temperature Research in Kunteyi Playa, Western China

Restoring Halite Fluid Inclusions as an Accurate Palaeothermometer: Brillouin Thermometry Versus Microthermometry

Prospects for Eocene potash deposition in the East Tethyan domain: New evidence from fluid inclusions and chlorine isotope of halite crystals in the Kuqa Basin, NW China

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