Early evolution of continents

Article Abstract:

Geochemical methods are beginning to provide information about the early evolution of the continental crust and the Earth's mantle. For example, one research team has determined that the amount of continental crust has remained stable since it formed.

Natural history, Geochemistry, Continents

---

Seeing a mountain in a grain of garnet

Article Abstract:

The discovery of the low-pressure mineral cristobalite in Appalachian garnets is among the geologic studies that are providing new information on the collision and subduction process that occurs when continents collide and mountains are formed.

Geology, Structural, Structural geology, Rocks, Metamorphic, Metamorphic rocks, Inclusions

---

How vanished oceans drop an anchor

Article Abstract:

Research on submarine geology indicates that differences in subduction zone behavior are caused by a sea anchor force. The force can move the descending ocean floor up into the upper plate, causing an earthquake, or push it down.

Models, Plate tectonics, Submarine geology, Marine geology

Similar abstracts:

• Abstracts: Climate and the evolution of mountains. Tackling malaria. The big potential of small farms
• Abstracts: Punctuated evolution of embryos. Plecopteran surface-skimming and insect flight evolution. Knowledge of Number: Its Evolution and Ontogeny
• Abstracts: Nuclear legacy of Soviet Union poses concerns. Changing course in the Americas
• Abstracts: Shear-wall retrofit. Historic upgrades in San Francisco. Corps begins work on California dam
• Abstracts: Rapidly desorbing fractions of PAHs in contaminated sediments as a predictor of the extent of bioremediation. Heavy metal and hydrocarbon pollution in recent sediments from Southampton Water, Southern England: a geochemical and isotopic survey

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.