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Bukid Series 2: Mt. Pinatubo

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By: Erika Florence P. Inez Aerial view of Mount Pinatubo (http://noypicollections.blogspot.com/2011/07/mt-pinatubo-dilemma-turns-to-tourist.html) Standing 1,486 meters above sea level, Mt. Pinatubo is highly one of the Philippines' most famous mountains. Located on the   tripoint  boundary of the  Philippine provinces  of  Zambales ,  Tarlac  and   Pampanga , all in  Central Luzon  on the northern island of  Luzon, this mountain is well-known for its eruptive history. Pinatubo was once obscure, covered with dense forests and is supported several thousand indigenous Aetas. It was a little known volcano and it had been dormant for almost 400 years. But in 15 June 1991 , Mt. Pinatubo erupted, and it became the second largest volcanic eruption of the 20th century. Complicating the eruption was the appearance of Typhoon Diding (International name: Typhoon Yunya), bringing a lethal mix of ash and rain to the neighbor...
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THE ROCK CHRONICLES: Green Schist

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What is greenschist? Greenschist is a fine-grained to medium-grained foliated metamorphic rock. It is dominated by chlorite (ClO2-), actinolite (Ca2(Mg,Fe)5Si8O22(OH)2), and epidote (Ca2(Al,Fe)2(SiO4)3(OH)). Greenschists form by regional metamorphism of mafic igneous rocks, usually basaltic rocks, under greenschist facies metamorphism. The name comes from commonly having an abundance of green minerals such as chlorite, serpentine, and epidote, and platy minerals such as muscovite and platy serpentine. Figure 1. Unpolished green schist with visible sharp side. Figure 2. Visible dull sides of an unpolished green schist. Figure 3. Diamond-like polished green schist pictured with its sharp side visible. Figure 4. Visible blunt edges of the polished green schist. Specific Characteristics of Greenschist Based on observation, the rock was sort of dusty and dull at first but after polishing it by washing it with water, the green color of ...
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Bukid Series 3: Mt. Dulang Dulang

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By: Camille Kate R. Librando Photo by kleo_marlo (flickr.com) Mount Dulang-dulang, called by Filipino trekkers as "D2", is the highest elevation peak in the Kitanglad Mountain Range, located in the north central p art of the province of Bukidnon in Mindanao. It is the second highest mountain of the Philippines at 2,938 metres (9,639 ft) above sea leve l. T h e long trek to the peak boasts of a variety of landscapes, starting from the wide trails with pine trees and grassland and progressing into denser jungles. The jungle will reach a point where everything is covered with moss and clouds. Trees are like bonsai, with spiraling, convoluted branches and ‘beards’ of lichen and white moss that give an ‘ancient’ feel to the forest. The temperature decreases even in daytime, and when you emerge from this jungle to the clearing at the peak, you can see the whole of the Kitanglad range and even catch a glimpse of majestic Mt. Apo. Photo retrieved from: trailadve...
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