scholarly journals Behaviors of Mantle Fluid During Mineralizing Processes

10.5772/32399 ◽  
2012 ◽  
Author(s):  
Liu Xianfan ◽  
Li Chunhui ◽  
Zhao Fufeng ◽  
Tao Zhuan ◽  
Lu Qiuxia ◽  
...  
Keyword(s):  
Mantle Fluid

Actual Microcosmic Trace of Mantle Fluid in Deep Geological Process: Experimental Evidence with Petrography, SEM-EDS and EPMA

2017 ◽  
Vol 17 (9) ◽  
pp. 6881-6889
Author(s):  
Xianfan Liu ◽  
Fufeng Zhao ◽  
Chunhui Li ◽  
Xiangfeng Song ◽  
Yufan Yang ◽  
...  
Keyword(s):  
Experimental Evidence ◽  
Geological Process ◽  
Mantle Fluid

scholarly journals Saline aqueous fluid circulation in mantle wedge inferred from olivine wetting properties

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Yongsheng Huang ◽  
Takayuki Nakatani ◽  
Michihiko Nakamura ◽  
Catherine McCammon
Keyword(s):  
Fluid Transport ◽  
Mantle Wedge ◽  
Aqueous Fluid ◽  
High Electrical Conductivity ◽  
Interconnected Network ◽  
Fluid Circulation ◽  
Wetting Properties ◽  
Mantle Fluid ◽  
Conductivity Anomalies ◽  
Electrical Conductors

AbstractRecently, high electrical conductors have been detected beneath some fore-arcs and are believed to store voluminous slab-derived fluids. This implies that the for-arc mantle wedge is permeable for aqueous fluids. Here, we precisely determine the dihedral (wetting) angle in an olivine–NaCl–H2O system at fore-arc mantle conditions to assess the effect of salinity of subduction-zone fluids on the fluid connectivity. We find that NaCl significantly decreases the dihedral angle to below 60° in all investigated conditions at concentrations above 5 wt% and, importantly, even at 1 wt% at 2 GPa. Our results show that slab-released fluid forms an interconnected network at relatively shallow depths of ~80 km and can partly reach the fore-arc crust without causing wet-melting and serpentinization of the mantle. Fluid transport through this permeable window of mantle wedge accounts for the location of the high electrical conductivity anomalies detected in fore-arc regions.

Real-Time PCR Quantification of Vibrio parahaemolyticus in Oysters Using an Alternative Matrix

2004 ◽  
Vol 67 (11) ◽  
pp. 2424-2429 ◽  
Author(s):  
G. E. KAUFMAN ◽  
G. M. BLACKSTONE ◽  
M. C. L. VICKERY ◽  
A. K. BEJ ◽  
J. BOWERS ◽  
...  
Keyword(s):  
Real Time ◽  
Real Time Pcr ◽  
Vibrio Parahaemolyticus ◽  
Pcr Amplification ◽  
Oyster Tissue ◽  
Pcr Assay ◽  
Colony Hybridization ◽  
The Real ◽  
Mantle Fluid ◽  
June July

This study examined the relationship between levels of total Vibrio parahaemolyticus found in oyster tissues and mantle fluid with the goal of using mantle fluid as a template matrix in a new quantitative real-time PCR assay targeting the thermolabile hemolysin (tlh) gene for the enumeration of total V. parahaemolyticus in oysters. Oysters were collected near Mobile Bay, Ala., in June, July, and September and tested immediately after collection and storage at 26°C for 24 h. Initial experiments using DNA colony hybridization targeting tlh demonstrated that natural V. parahaemolyticus levels in the mantle fluid of individual oysters were strongly correlated (r = 0.85, P < 0.05) with the levels found in their tissues. When known quantities of cultured V. parahaemolyticus cells were added to real-time PCR reactions that contained mantle fluid and oyster tissue matrices separately pooled from multiple oysters, a strong linear correlation was observed between the real-time PCR cycle threshold and the log concentration of cells inoculated into each PCR reaction (mantle fluid: r = 0.98, P < 0.05; and oyster: r = 0.99, P < 0.05). However, the mantle fluid exhibited less inhibition of the PCR amplification than the homogenized oyster tissue. Analysis of natural V. parahaemolyticus populations in mantle fluids using both colony hybridization and real-time PCR demonstrated a significant (P < 0.05) but reduced correlation (r =−0.48) between the two methods. Reductions in the efficiency of the real-time PCR that resulted from low population densities of V. parahaemolyticus and PCR inhibitors present in the mantle fluid of some oysters (with significant oyster-to-oyster variation) contributed to the reduction in correlation between the methods that was observed when testing natural V. parahaemolyticus populations. The V. parahaemolyticus–specific real-time PCR assay used for this study could estimate elevated V. parahaemolyticus levels in oyster mantle fluid within 1 h from sampling time.

Crust-mantle structures and gold enrichment mechanism of mantle fluid system

2003 ◽  
Vol 22 (3) ◽  
pp. 263-270 ◽  
Author(s):  
Deng Jun ◽  
Sun Zhongshi ◽  
Wang Qingfei ◽  
Wei Yangguang
Keyword(s):  
Fluid System ◽  
Mantle Fluid ◽  
Gold Enrichment

Mantle fluid component in the proterozoic lamproites of the baltic shield

1998 ◽  
Vol 43 (S1) ◽  
pp. 84-84
Author(s):  
K. I. Lokhov ◽  
L. P. Nikitina ◽  
B. V. Belyatsky ◽  
L. K. Levsky
Keyword(s):  
Baltic Shield ◽  
Fluid Component ◽  
Mantle Fluid ◽  
The Baltic

Brine inclusions in diamonds: a new upper mantle fluid

2001 ◽  
Vol 187 (3-4) ◽  
pp. 323-332 ◽  
Author(s):  
Elad S. Izraeli ◽  
Jeffrey W. Harris ◽  
Oded Navon
Keyword(s):  
Upper Mantle ◽  
Mantle Fluid

scholarly journals Geodynamic position of large and super large precious metal and uranium ore districts and nodes in the East Asia

2019 ◽  
Vol 486 (1) ◽  
pp. 74-77
Author(s):  
V. G. Khomich ◽  
N. G. Boriskina
Keyword(s):  
Lower Mantle ◽  
Precious Metals ◽  
Northern China ◽  
Heat Fluxes ◽  
Uranium Ore ◽  
Mantle Fluid ◽  
Frontal Part ◽  
The World ◽  
World Class ◽  
Oceanic Slab

The analysis results of the geophysical, seismic tomography and mineragenic data are presented, revealing the prerequisites for the regular of the location large and unique precious metals and uranium ore nodes of Southeast Russia, East Mongolia and Northern China. Shown that probable causes localization of the world-class ore clusters and districts above a stagnant oceanic slab perimeter are predetermined by concentration of the lower mantle fluid-heat fluxes at the frontal part of the slab and on its flanks, which are represented by sublatitudinal paleotransformal faults.

Osmotic and Ionic Regulation in a Terrestrial Snail, Pomatias Elegans (Gastropoda, Prosobranchia) With a Note on Some Tropical Pomatiasidae

1972 ◽  
Vol 57 (1) ◽  
pp. 205-215
Author(s):  
T. J. RUMSEY
Keyword(s):  
Ionic Composition ◽  
Calcareous Soils ◽  
Buffering Capacity ◽  
Magnesium Ions ◽  
Bicarbonate Concentration ◽  
Yearly Cycle ◽  
Mantle Fluid ◽  
A Value ◽  
Calcium And Magnesium ◽  
Calcium And Magnesium Ions

1. The haemolymph concentration in the pomatiasids is higher than in any other terrestrial gastropods so far studied. 2. P. elegans shows a yearly cycle of haemolymph concentration, showing maximum values in January and February 1971, and June and July 1971. Minimal values were obtained between March and May 1971. 3. The concentration of calcium in the haemolymph (especially of Pomatias) is high, a value of 20.2 mM/l being obtained for one group of Pomatias. This reflects their dependence on calcareous soils for survival. 4. Haemolymph and urine are isosmotic and isoionic. 5. The mantle fluid is generally less concentrated than the haemolymph and urine, ionic reabsorption presumably occurring over the mantle epithelium. Potassium, calcium and magnesium ions are selectively reabsorbed. 6. The highest haemolymph concentrations in pomatiasids were found in animals that inhabited areas with the least rainfall, and vice versa. 7. During inactivity the percentage ionic composition of the haemolymph of P. elegans altered as the O.P. increased. Sodium decreased, magnesium increased, and bicarbonate decreased. It is suggested that the fall in bicarbonate concentration is due to a change in the buffering capacity of the haemolymph.

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