Precise dating of biotite in distal volcanic ash: Isolating subtle alteration using ⁴⁰Ar/³⁹Ar laser incremental heating and electron microprobe techniques

Physics & Astronomy

• biotite 100%
• volcanology 87%
• dating 80%
• ashes 78%
• laser heating 72%
• electrons 25%
• crystals 20%
• minerals 12%
• river basins 11%
• beds 11%
• plateaus 11%
• rivers 7%
• integrity 6%
• cleavage 6%
• horizon 6%
• rocks 5%
• polarity 5%
• isotopes 5%
• fusion 4%
• intervals 4%
• heating 3%
• high resolution 3%

Earth & Environmental Sciences

• volcanic ash 68%
• electron probe analysis 63%
• biotite 57%
• dating 46%
• laser 45%
• heating 43%
• sanidine 37%
• crystal 22%
• tuff 14%
• plateau 6%
• young 6%
• experiment 5%
• phenocryst 5%
• mineral 5%
• loss 4%
• cleavage 4%
• volcanic rock 4%
• Eocene 4%
• transect 4%
• comparison 3%
• ash 3%
• river basin 3%
• isotope 3%
• timescale 3%
• calibration 3%
• river 2%

Chemical Compounds

• Mineral 14%
• Isotope 7%
• Polarity 7%
• Green 6%
• Cleavage 5%