Geology and Petrography of Mutsu-Hiuchidake volcano, Shimokita peninsula.

Kliuchevskoi Volcano, Kamchatka Peninsula

The Malayer plutonic complex: field geology, petrography and geochemical interpretation

The geochemical signatures like discordant variation of major and trace elements among felsic-intermediate and basic rocks  and  mafic enclaves of Malayer region on binary variation plots, decreasing values of FeOt, TiO2, MgO, MnO and CaO accompanied with increasing of SiO2 content from basic to felsic rocks, and decreasing Ni, Cr and Co with increasing SiO2 are considered as indications of mag...

Petrography, geochemistry and petrogenesis of Damavand volcano: Comparison of different volcanic generations

1-Introduction Damavand volcano was formed by explosive and non-explosive eruptions on the old eroded rock units (Mesozoic and older) of Central Alborz during the Quaternary period and formed two huge cone (Old and Young Damavand). Davidson et al. (2004) determined the time of Old-Damavand activity from 1800 to 800 thousand years ago by measuring Ar/Ar and U-Th/He methods. According to their ...

Geology, geochemistry and earthquake history of Lō"ihi Seamount, Hawai"i’s youngest volcano

A half-century of investigations are summarized here on the youngest Hawaiian volcano, Lō"ihi Seamount. It was discovered in 1952 following an earthquake swarm. Surveying in 1954 determined it has an elongate shape, which is the meaning of its Hawaiian name. Lō"ihi was mostly forgotten until two earthquake swarms in the 1970s led to a dredging expedition in 1978, which recovered young lavas. Th...

Geology of the Eastern Flank of the Olympus Mons Volcano as Seen in Mex

HRSC IMAGES OF MARS. A. T. Basilevsky, G. Neukum, S. Werner, S. van Gasselt, K. Gwinner, and B. A. Ivanov, Vernadsky Institute of Geochemistry and Analytical Chemistry, RAS, Kosygin Str., 19, 119991, Moscow, Russia, [email protected]; Institut fuer Geologische Wissenschaften, Freie Universitat Berlin, D12249, Berlin, Germany; DLR-Institut fuer Planetenforschung, D-12489, Berlin, Germany; Institut...