عنوان

De Karisimbi, Een Recente Vulkaan van Het Virungagebied (Rwanda, Zaire)

شماره

LA107606

زبان متن نوشتاري يا گفتاري و مانند آن

انگلیسی

عنوان اصلي

De Karisimbi, Een Recente Vulkaan van Het Virungagebied (Rwanda, Zaire)

نام عام مواد

[Article]

نام نخستين پديدآور

Mark de Mulder

محل نشرو پخش و غیره

Leiden

نام ناشر، پخش کننده و غيره

Brill

متن يادداشت

Karisimbi, A Recent Volcano of the Virunga Area (Rwanda, Zaire) This paper deals with the geological structure and the petrologic evolution of Karisimbi, the highest volcano in the Virunga region. As this paper is intended to be understood by non-geologists, a brief review about the methods used by volcanologists, should make things clear for the reader. The field-work data enabled us to describe the morphology, structure and the evolution of Karisimbi. The results of the laboratory studies are summarized in the section petrography - petrochemistry, where some problems concerning nomenclature and interpretation of chemical data are discussed as well. Petrographical and petrochemical information leads us to the origin and the evolution of magmas, which is the ultimate purpose of every petrologist. In the case of Karisimbi, it is suggested that its petrologic evolution took place by simultaneous fractional crystallization and contamination by crustal rocks. Finally, the ages of some typical Karisimbi lavas have been determined by a radiometric dating method (K-Ar), bearing in mind that large errors on these ages are inevitable. Karisimbi, A Recent Volcano of the Virunga Area (Rwanda, Zaire) This paper deals with the geological structure and the petrologic evolution of Karisimbi, the highest volcano in the Virunga region. As this paper is intended to be understood by non-geologists, a brief review about the methods used by volcanologists, should make things clear for the reader. The field-work data enabled us to describe the morphology, structure and the evolution of Karisimbi. The results of the laboratory studies are summarized in the section petrography - petrochemistry, where some problems concerning nomenclature and interpretation of chemical data are discussed as well. Petrographical and petrochemical information leads us to the origin and the evolution of magmas, which is the ultimate purpose of every petrologist. In the case of Karisimbi, it is suggested that its petrologic evolution took place by simultaneous fractional crystallization and contamination by crustal rocks. Finally, the ages of some typical Karisimbi lavas have been determined by a radiometric dating method (K-Ar), bearing in mind that large errors on these ages are inevitable.

تاريخ نشر

1986

توصيف ظاهري

23-54

عنوان

Afrika Focus

شماره جلد

2/1

شماره استاندارد بين المللي پياييندها

2031-356X

اصطلاح موضوعی

differentiation

اصطلاح موضوعی

geology

اصطلاح موضوعی

petrology

اصطلاح موضوعی

Virunga

اصطلاح موضوعی

volcanoes

مستند نام اشخاص تاييد نشده

Mark de Mulder

شماره بازیابی

10.1163/2031356X-00201003

نام الکترونيکي

فرمت انتشار

p

نوع ماده

[Article]

کد کاربرگه

275578

سطح دسترسي

a

تكميل شده

Y