Today's continental shelves, such as the one covered by the North Sea, are products of the last post-glacial sea-level rise of the glacial era that began in the Late Pliocene and continued until today. The sedimentary history of shelf seas reflects the changing relationship between tectonic subsidence, sea level oscillations and (hydro-) dynamics processes.
The first detailed tephra statigraphy in order to elucidate the eruptive history of Tangkuban Perahu volcano, West Java, Indonesia is presented as fuller detail as possible. It contains detailed description of outcrops, correlation of reference sections, radiocarbon dating combined with K-Ar data, rigorous measurement of thickness, density, vesicularity, and grain size analyses.
Kelimutu is a stratovolcano that has three crater lakes containing exotic fluids. This study presents the analytical results describing the chemistry of each lake, interprets the chemistries in terms of water-rock interactions and volcanic fluxes, and derives a physical lake model that delineates the parameter-window for volcanic crater lake existence.
This study deals with the massive Elvaberget sulphide deposit, in the southern part of the central skellefte district. The ores as well as the surrounding rocks and alteration zone were studies.
The Tethys Oceans separated the African, Arabian and Indian continents from Eurasia in Mesozoic-Cenozoic times. When the Atlantic Ocean opened, the continents started to converge and the Tethys Oceans gradually began closing.
This study concern the quaternary geology, geomorphology and sedimentology of the intramontane Bandung basin, West - Java, Indonesia. A comprehensive analysis of the sequence of lacustrine, alluvial and volcaniclastic sediments in the basin form the basis for a reconsstrution of the Late Quanternary geologic and morphologic evolution of the Bandung basin area and for an evaluation of the geolog…
Mount Merapi, island are volcano located in the center of Java (Indonesia), lies upon the remnents of a volcano older than 400.000 years called Pre-Merapi. Sensu stricto Merapi is a very young volcano characterised by a rapid edification. Its history is divided into four periods (ancient, Middle aged, Recent and Historical Merapi).
The Toba depression in northern Sumatera is a complex structure, formed by repeated episodes of caldera subsidence and resurgence, strongly influenced by regional structure. The Toba depression, and the associated Toba Tuff, a widespread ignimbrite sheet which covers approximately 20.000km, are the result of three major eruptive events.
This thesis concered with volcanic hazard and risk. The study was addressed to analyzed and mapping of volcanic landform, mapping of volcanic hazard and volcanic risk zones of the area by yusing an aid of aerial photograph and other remote sensing image. Geomorphological approach have been used for analysing the landform wich is relatide to the volcanic hazard and its risk.
Merapi volcano is one of the most active volcanoes in the world and during the last 3000 yrs, it has been more or less continuously in eruption. Merapi volcano is a stratovolcano with a south-west facing horseshoe-shaped summit crater filled by a lava dome. Its composition rangers from basalt to basaltic andesite (52 to 56% SiO2) and it has high Al2O3 (18.5 to 20.2% wt) and medium to high K2O …