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Toba Tuff

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Journal Article
Journal: Geology
Published: 01 April 2002
Geology (2002) 30 (4): 347–350.
...James E. Gardner; Paul W. Layer; Malcolm J. Rutherford Abstract The petrogenesis of the 2800 km 3 of magma erupted as the youngest Toba Tuff has been investigated using experimental petrology and 40 Ar/ 39 Ar dating of biotite, sanidine, hornblende, and plagioclase from the tuff. We find...
FIGURES | View All (5)
Journal Article
Published: 01 May 1984
Journal of the Geological Society (1984) 141 (3): 487–500.
...D. T. Aldiss; S. A. Ghazali Abstract The late Quaternary Toba volcano-tectonic depression, in the Sunda Arc, is the largest resurgent cauldron in the world and lies in one of the largest ignimbrite fields, the Toba Tuffs. Although composed of at least 3000 km 3 of acid tuffs, spread over 20000 km 2...
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Application of the plagioclase-liquid hygrometer to the Youngest <b>Toba</b> <b>Tuff</b> ...
Published: 01 October 2015
Figure 13 Application of the plagioclase-liquid hygrometer to the Youngest Toba Tuff (YTT), using the plagioclase compositions, and bulk compositions reported in Chesner (1998) . The pre-eruptive temperatures presented for the YTT have been recalculated using the oxide compositions presented
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Temporal changes in the crystal growth environment of the Younger <b>Toba</b> <b>Tuff</b>...
Published: 01 January 2008
Figure 25. Temporal changes in the crystal growth environment of the Younger Toba Tuff, Indonesia, as inferred from internal covariations between MnO/MgO and U-Th ages in allanites. Predicted variations in temperature (right-hand axis) associated with changes in MnO/MgO are based on experimental
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TABLE 1. <b>TOBA</b> <b>TUFF</b> SAMPLES USED IN THIS STUDY
in > Geology
Published: 01 April 2002
TABLE 1. TOBA TUFF SAMPLES USED IN THIS STUDY
Journal Article
Published: 01 August 1989
American Mineralogist (1989) 74 (7-8): 750–758.
...Craig A. Chesner; Art D. Ettlinger Abstract The crystal-rich, chemically zoned Toba Tuffs commonly contain accessory allanite. Electron-microprobe analyses of this LREE-rich phase exhibit significant variations that correlate generally with magmatic evolution and temperature. Allanite compositions...
Journal Article
Journal: Geology
Published: 01 March 1991
Geology (1991) 19 (3): 200–203.
...C. A. Chesner; W. I. Rose; A. Deino; R. Drake; J. A. Westgate Abstract Single-grain laser-fusion 40 Ar/ 39 Ar analyses of individual sanidine phenocrysts from the two youngest Toba (Indonesia) tuffs yield mean ages of 73 ±4 and 501 ±5 ka. In addition, glass shards from Toba ash deposited...
Journal Article
Journal: Geology
Published: 01 September 2015
Geology (2015) 43 (9): 823–826.
... of the youngest Toba Tuff. Concentrations of climate-sensitive ecological indicators such as phantom midges, diatoms, and other algae through a >270 yr interval bracketing the Toba cryptotephra show no unusual or sustained deviations from background variability within Lake Malawi associated...
FIGURES | View All (4)
Journal Article
Journal: Geology
Published: 01 January 2004
Geology (2004) 32 (1): 61–64.