Ti contents of quartz crystals from Lava Creek Tuff and Oldest Toba Tuff

These dataset include two parts. The first xls file is the major element analyses of volcanic rocks from the Yellowstone and Toba. The second xlsx file is the Ti contents of quartz crystals from Lava Creek Tuff and Oldest Toba Tuff.本数据集包含两个部分。首个XLS文件为黄石（Yellowstone）与多巴（Toba）火山岩的主量元素分析数据；第二个XLSX文件则收录了莱克溪凝灰岩（Lava Creek Tuff）与多巴最老凝灰岩（Oldest Toba Tuff）中石英晶体的钛（Ti）元素含量。