Uranium-series isotope and thermal constraints on the rate and depth of silicic magma genesis

2008 ◽  
Vol 304 (1) ◽  
pp. 169-181 ◽  
Author(s):  
A. Dosseto ◽  
S. P. Turner ◽  
M. Sandiford ◽  
J. Davidson
Keyword(s):  
Silicic Magma ◽  
Magma Genesis ◽  
Uranium Series ◽  
Thermal Constraints

The case for crust–mantle interaction during silicic magma genesis: The zircon testimony

2006 ◽  
Vol 70 (18) ◽  
pp. A313 ◽  
Author(s):  
A.I.S. Kemp ◽  
C.J. Hawkesworth ◽  
B.A. Paterson ◽  
G.L. Foster ◽  
J.D. Woodhead ◽  
...  
Keyword(s):  
Silicic Magma ◽  
Magma Genesis

Radiometric dating of hillslope calcrete in the Negev Desert, Israel

2008 ◽  
Vol 104 (11/12) ◽  
Author(s):  
J.C. Vogel ◽  
M.A. Geyh
Keyword(s):  
Open System ◽  
Negev Desert ◽  
Radiometric Dating ◽  
Jordan Valley ◽  
Partial Recrystallization ◽  
Uranium Series ◽  
Uranium Series Dating

The radiometric dating of calcrete is often problematical because impurities and open system conditions affect the apparent ages obtained. By applying both radiocarbon and uranium-series dating to calcrete in colluvium, it is shown that such conditions can be identified. In correlation with the stratigraphy, it is found that partial recrystallization severely decreases the radiocarbon ages of the upslope and shallower samples further down, whereas incorporation of limestone fragments from bedrock significantly increases the apparent ages of some of the uranium-series samples. It is concluded that the hillslope calcrete at the study site near Sede Beker in the Negev Desert, Israel, mainly developed shortly after 40 kyr ago, at a time when the Jordan Valley was being inundated to form the fossil Lake Lisan. Since their formation would have required higher rainfall than today, the results provide further evidence that the whole region was experiencing an increase in precipitation.

DIFFUSION CHRONOMETRY IN SANIDINE: HELPING UNRAVEL THERMAL HISTORIES OF LARGE SILICIC MAGMA RESERVOIRS

2019 ◽  
Author(s):  
Jordan Lubbers ◽  
◽  
Adam J.R. Kent ◽  
Frank Tepley ◽  
Dawid Szymanowski
Keyword(s):  
Silicic Magma ◽  
Diffusion Chronometry ◽  
Magma Reservoirs ◽  
Thermal Histories

BASALTIC MAGMA GENESIS AND MANTLE SOURCES BENEATH TWO CENOZOIC VOLCANOES, MT. EARLY AND SHERIDAN BLUFF, EAST ANTARCTICA

2020 ◽  
Author(s):  
Yuyu Li ◽  
◽  
K.S. Panter ◽  
John L. Smellie ◽  
Jerzy S. Blusztajn ◽  
...  
Keyword(s):  
Basaltic Magma ◽  
East Antarctica ◽  
Magma Genesis ◽  
Mantle Sources
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