Geochemical Evidence of Island-Arc Origin for Sumatra Island; A New Perspective based on Volcanic Rocks in Lampung Province, Indonesia
نویسندگان
چکیده
منابع مشابه
the kasian volcanic rocks, khorramabad, iran: evidence for a jurassic intra-oceanic island arc in neo-tethys ocean
the kasian volcanic body is located in the eastern margin of the zagros thrust belt, close to the sanandaj-sirjan metamorphic zone. these volcanic rocks are mainly composed of andesite and andesite-basalt rocks with porphyritic, hypocrystalline porphyritic, hyalo-porphyritic and hyalo-microlitic porphyritic textures. analyses of the distributions of major, rare earth and trace elements reveal a...
متن کاملGeochemical Constraints on the Origin of Volcanic Rocks from the Andean Northern Volcanic Zone, Ecuador
Whole-rock geochemical data on basaltic to rhyolitic samples from 12 volcanic centers are used to constrain the role of continental crust in the genesis of magmas formed beneath the anomalously wide subduction-related volcanic arc in Ecuador. Relatively homogeneous, mantle-like, isotopic compositions across the arc imply that the parental magmas in Ecuador were produced largely within the mantl...
متن کاملHankow Reef, Bismarck Volcanic Arc, Papua New Guinea: Source of Yomba Island myth?
Hankow Reef off the coast of Madang Province, New Guinea has been linked to a large eruption at a former island known as ‘Yomba’ by legends told by people living in the Madang province. However some doubts have been made about the accuracy of their comments. I present evidence for a low-lying volcanic island that may have existed at Hankow Reef and its links to the Yomba stories.
متن کاملJembrana Disease and the Bovine Lentiviruses
An outbreak of a new disease was reported in the Jembrana district of BaU province, Indonesia, in 1964. At first, it was reported to affect Bali cattle (Bos javanicus syn Bos sondaicus) and buffaloes (Bubalis bubalis), but only Bali cattle were reported in the later outbreaks in Bali and elsewhere in Indonesia. The disease was diagnosed firstly as a rinderpest-like disease and subsequently name...
متن کاملژئوشیمی و سنگ‌شناسی سنگ‌های آتشفشانی شمال‌شرق نراق: ماگماتیسم جزایر قوسی یا حواشی قاره‌ای فعال؟
The tectonic settings for the Urumieh-Dokhtar volcanic-plutonic belt provided by different reaserchers including active continental margin rift and post collisional settings. Geochemical and tectonic studies indicate that this belt belongs to the active continental margin. Basaltic andesite, andesite, trachy andesite, trachy dacite and dacitic rocks in NE Naragh, of the Urumieh-Dokhtar magmatic...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Indonesian Journal on Geoscience
سال: 2011
ISSN: 2355-9306,2355-9314
DOI: 10.17014/ijog.v6i4.128