Category: HE 2: Geoscience (MS)

Construct an explanation based on evidence for how geoscience processes have changed Earth’s surface at varying time and spatial scales.

Earth Science, Earth's System, ES 1: Geochemical Cycles (HS), ES 2: Thermal Convection Evidence (HS), ES 4: Carbon Cycling (HS), HE 1: Plate Tectonics (HS), HE 2: Geoscience (MS), HE 3: Mantle Convection (HS), History of Earth, W&C 3: Global Warming Causes (MS), Weather and Climate

CO2 emissions from subaerial volcanoes

GwynneL.

The emissions of CO2 and other volatiles from the world's subaerial volcanoes SUMMARY: Volcanoes play an important role in recycling carbon dioxide. This study takes a closer look at the amount emitted into the atmosphere by volcanoes that aren't underwater. Out of 900 volcanoes, only 500 have detectable degassing activity (i.e. they are emitting gases).… Continue reading CO2 emissions from subaerial volcanoes

Earth Science, Earth's System, ES 1: Materials/Energy Flow (MS), ES 3: Earth's Resources (MS), HE 1: Plate Tectonics (HS), HE 2: Early Earth (HS), HE 2: Geoscience (MS), HE 3: Stratigraphic Records (MS), History of Earth

Coal Formation Not Correlated with Fungal Evolution

GwynneL.

Delayed fungal evolution did not cause the Paleozoic peak in coal production SUMMARY: This article provides evidence to refute the theory that most of our coal was formed during a period of time (Carboniferous-Permian age, about 299 million years ago) when fungus had not evolved enzymes to digest lignin. Plant material was thought to have… Continue reading Coal Formation Not Correlated with Fungal Evolution