GnRH stimulates the pituitary gland to produce follicle stimulating hormone (FSH), the hormone responsible for starting follicle (egg) development and causing the level of estrogen, the primary female hormone, to rise.
The Great Alaska Earthquake lasted for nearly five minutes and registered a magnitude of 9.2, still the largest ever recorded in North America and second only to the 9.5-magnitude quake that struck Chile in 1960.
It is also the second largest earthquake ever recorded, next to the M9.5 earthquake in Chile in 1960. The map shows the epicenter of the 1964 Great Alaska Earthquake (red star), caused when the Pacific Plate lurched northward underneath the North American Plate. Science Features: The 1964 Great Alaska Earthquake & Tsunami It was the largest U.S. earthquake ever recorded, and a turning point in earth science.