LGBT rights in Guam
Guam became the first overseas territory of the United States to recognize and perform same-sex marriages in June 2015. On June 5, 2015, Chief Judge Frances Tydingco-Gatewood of the United States District Court for the District of Guam ruled that Guam's prohibition on same-sex couples marrying is unconstitutional. She cited the Ninth Circuit Court of Appeals decision in "Latta v. Otter" striking down identical bans in Idaho and Nevada. The territory began issuing marriage licenses to same-sex couples four days later. The Legislature passed the "Guam Marriage Equality Act of 2015" on August 11, 2015, making Guam's marriage laws gender-neutral.
Guam
The Mariana chain of which Guam is a part was created by collision of the Pacific and Philippine Sea tectonic plates. Guam is the closest land mass to the Mariana Trench, the deep subduction zone that runs east of the Marianas. Due to its location on the Mariana Plate just westward of where the Pacific Plate subducts the Mariana and the Philippine Sea Plates, Guam occasionally experiences earthquakes. In recent years, most with epicenters near Guam have had magnitudes ranging from 5.0 to 8.7. Unlike Anatahan in the Northern Mariana Islands, Guam is not volcanically active, though vog (volcanic smog) from Anathan affects it due to proximity.