VOLCANO FORMATION (Volcanology) INTRODUCTION Volcanology is the scientific study of volcanoes, lava, magma, and related geological phenomena. A volcano is an opening in the Earth’s crust through which molten rock (magma), gases, and ash escape from beneath the surface. FORMATION OF VOLCANOES 1. HEAT AND PRESSURE IN THE MANTLE: Deep within the Earth, high temperatures and pressures cause rocks to melt, forming magma in the mantle. 2. MAGMA MOVEMENT: Because magma is less dense than the surroundin

I’m still in awe of this little known 1000 foot volcanic cinder cone 25 miles NW of Flagstaff. We explored the slot canyons and hoodoos for over 4 hours yesterday, and only saw 3 people. Many crystals and gems dot the volcanic rock in the 740,000 year old formation. | Jeremy Johnson Photography

Mahirap mang puntahan, hindi napigilan ang isang hiker sa pagdayo sa Babuyan Islands para akyatin ang isang active volcano roon. G! na silipin ang kakaibang ganda nito. | GMA News