Geochemistry and Environmental Mineralogy of The Iron - Sulphur - Arsenic System

Vol enthousiasme en goede moed begon ik in september 997 aan het promotie-onderzoek dat heft geleid tot dit proefschrifit. Toch liep het, vooral de eerste twee jaar, anders dan gehoopt. Zonder alle hulp en steyn die ik heb mogen krijgen had ik dit onderzoek nooit tot een goed einde kunnen volbrengen.

Volcanology and Petrology of MT.Semeru Volcanic Complex,East Java - Indonesia

Mt. Semeru volcanic complex is basalt-andesite composite volcano in East Java, Indonesia. The structural geology of study area is indicated by faults or structural trends and negative volcanic landforms such as calderas, maars, craters and escarpments.

A Study of The Stratigraphy, Volcanology and Geochemistry of Pyroclastic Rock…

The Ijen caldera complex is located in an active tectonic region, where the Indian plate is now sliding approximately northward beneath Java at about 6-7 cm/yr. This study is in two parts, the firs is detailed field mapping and includes a geological map and stratigraphy, which form the basis for other work. The second concentrates on the post-caldera pyroclastic deposits.

Volcanogenic Pollutants in Hyperacid River Water Disharged From Ijen Crater L…

The Ijen caldera in East Java contains on of the world's largest (600 x 1000m) and deepest (180m) hyperacid (pH

Volcanology and Geochemistry of Newer Volcanis from Portland area, Western Vi…

The volcanic rocks mainly consist of lava flows and pyroclastic deposits that are exposed at the bridgewater, Nelson and Grant volcanis compoxes. Yhe pyroclastic deposits resulting from phreatomagmatic eruption varu in physical characteristics that are likely caused by fluctuation of magma/water ratio during interaction.

Volcanic Stratigraphy Geochemistry of The Idjen Caldera Complex,East Java Ind…

The Idjen caldera is classed as a Krakatoa type or stratocone caldera and is characterized by a caldera floor, a caldera escarpment, and older volcanic forms. The caldera diameter rangers from 14 by 16 km at the rim to 11 14 km at the floor with a maximum depth of 709m.

Geochemistry Of The Volcanoes Of Flores, Lesser Sunda Islands, Indonesia

The island of Flores, one of the Lesser Sunda Islands, is about 350km long and contains a large number of active or recently active volcanoes. Including Paluweh Island, there are at least 12 volcanoes with records of recent activity.

Volcanogenic Pollution; Element Accumulation And Dispersal Around Patuha Volc…

This thesis describes the result of a geochemical study concering the causes and consenquences of a natural form of environmental pollution that is associated with volcanic activity. Concentrations of chemical elemetns strongly exceed common geological background levels in the study area near Patuha volcano, West Java, Indonesia.

Stratigraphy And Geochemistry of Merapi Volcano, Central Java, Indonesia : Im…

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 …

Marine Geochemistry