Variable effects of cinder-cone eruptions on prehistoric agrarian human populations in the American southwest

Earth & Environmental Sciences

• cinder cone 62%
• human population 42%
• lava flow 38%
• volcanic eruption 35%
• tephra 33%
• land 23%
• mulch 23%
• crater 23%
• fallout 19%
• maize 16%
• lava 12%
• flow field 10%
• ceramics 10%
• volcano 10%
• effect 9%
• storage structure 9%
• built structure 8%
• arid land 7%
• soil nutrient 6%
• reworking 6%
• subsistence 6%
• shelter 6%
• soil temperature 5%
• growing season 5%
• roof 5%
• farm 5%
• household 4%
• soil moisture 4%
• human activity 4%
• decision making 4%
• family 4%
• phosphorus 4%
• crop 4%
• agriculture 4%
• nutrient 3%
• damage 3%
• soil 2%

Physics & Astronomy

• cones (volcanoes) 100%
• lava 67%
• volcanic eruptions 51%
• sunset 31%
• craters 23%
• fallout 22%
• soils 16%
• volcanoes 15%
• nutrients 13%
• blankets 11%
• arid lands 11%
• flow distribution 8%
• soil moisture 8%
• shelters 8%
• crops 7%
• agriculture 7%
• vents 7%
• ceramics 7%
• decision making 6%
• roofs 6%
• ballistics 5%
• phosphorus 5%
• deposits 4%
• damage 3%
• temperature 1%

Chemical Compounds

• Mulch 29%
• Flow 27%
• Soil 17%
• Nutrient 11%
• Cinder 8%
• Ceramic 8%
• Surface Structure 5%
• Phosphorus(.) 4%
• Block Like Crystal 3%
• Environment 2%
• pH Value 2%
• Surface 1%