Flashcards - Philippines Geology PDF

Flashcards - Philippines Geology Flashcard #2 Q: What is the main axial part of the archipelago in the Philippines? Options: A. Static Belt B. Mobile Belt C. Pacific Belt D. Seismic Belt Answer: B. Mobile Belt Flashcard #3 Q: The ore deposits in the Mobile Belt are genetically related to w...

Flashcards - Philippines Geology Flashcard #2 Q: What is the main axial part of the archipelago in the Philippines? Options: A. Static Belt B. Mobile Belt C. Pacific Belt D. Seismic Belt Answer: B. Mobile Belt Flashcard #3 Q: The ore deposits in the Mobile Belt are genetically related to which processes? Options: A. Erosion and sedimentation B. Magmatism and tectonism C. Weathering and erosion D. Deposition and compaction Answer: Magmatism and tectonism Flashcard #4 Q: Which deposits are considered in the paragraph? Options: A. Chromite, massive pyritic, pyrometasomatic, porphyry copper, gold-bearing vein B. Quartz, feldspar, calcite, dolomite, gypsum C. Iron, nickel, cobalt, zinc, lead D. Limestone, marble, granite, basalt, sandstone Answer: Chromite, massive pyritic, pyrometasomatic, porphyry copper, gold-bearing vein Flashcard #5 Q: Which chromite deposits represent refractory and metallurgical ores? Options: A. Bagacay and Barlo B. Masinloc and Acoje C. Larap and Thanksgiving D. Lepanto and Paracale Answer: Masinloc and Acoje Flashcard #6 Q: What is suggested by the unusually high alumina content of the Masinloc chromite? Options: A. It is a later crystallate than Acoje B. It is an earlier crystallate than Acoje C. It has undergone less deformation D. It has higher iron content than Acoje Answer: It is an earlier crystallate than Acoje Flashcard #7 Q: The structural settings of Masinloc and Acoje suggest what about these deposits? Options: A. They are recent formations B. They have undergone considerable deformation C. They are untouched by tectonic activity D. They are located in volcanic regions Answer: They have undergone considerable deformation Flashcard #8 Q: Which deposits exemplify a range of geologic settings in which structure plays an increasingly direct role in localizing the ore? Options: A. Acoje and Masinloc B. Bagacay, Barlo, and Hixbar C. Larap and Thanksgiving D. Lepanto and Baguio Answer: Bagacay, Barlo, and Hixbar Flashcard #9 Q: The massive pyritic deposits originated toward the close of which period? Options: A. Cretaceous B. Mesozoic C. Tertiary D. Jurassic Answer: Tertiary Flashcard #10 Q: The pyrometasomatic deposits are mined mostly for which content, except in one case? Options: A. Gold B. Iron C. Copper D. Silver Answer: Iron Flashcard #11 Q: The largest pyrometasomatic deposit in the Philippines, which exhibits the most mineralogical complexity, is? Options: A. Thanksgiving B. Larap C. Masinloc D. Hixbar Answer: Larap Flashcard #12 Q: The Thanksgiving deposit is known for high values in which metals? Options: A. Iron and nickel B. Gold and zinc C. Copper and silver D. Lead and tin Answer: Gold and zinc Flashcard #13 Q: How many known porphyry copper deposits are there in the Philippines? Options: A. Four B. Eight C. Ten D. Twelve Answer: Eight Flashcard #14 Q: Porphyry copper deposits are closely associated with which rock facies? Options: A. Basalt and granite B. Porphyritic dacite and andesite C. Limestone and marble D. Quartz and feldspar Answer: Porphyritic dacite and andesite Flashcard #15 Q: Which mineral is the main copper mineral in porphyry copper deposits? Options: A. Magnetite B. Pyrite C. Chalcopyrite D. Molybdenite Answer: Chalcopyrite Flashcard #16 Q: Which secondary minerals are closely associated with porphyry copper ores? Options: A. Quartz, biotite, and sericite B. Calcite, gypsum, and halite C. Feldspar, mica, and olivine D. Dolomite, fluorite, and barite Answer: Quartz, biotite, and sericite Flashcard #17 Q: The enargite-luzonite-telluride deposit at Lepanto is localized along the intersection of what? Options: A. A volcanic eruption B. A sedimentary layer C. An unconformity and a fault zone D. A metamorphic complex Answer: An unconformity and a fault zone Flashcard #18 Q: Which district is known for quartz-telluride-gold vein deposits? Options: A. Barlo B. Larap C. Baguio D. Hixbar Answer: Baguio Flashcard #19 Q: The gold deposits in the Paracale district are associated with which type of deposit? Options: A. Quartz-telluride-gold vein B. Quartz-base metal sulfide C. Enargite-luzonite-telluride D. Massive pyritic Answer: Quartz-base metal sulfide