Atas perintah Sdr. Kepala Urusan Gn. Api dan jang telah disetudjui oleh Sdr. Kep. Djawatan Geologi, maka pada tg. 11 Djan. 1954, kami brangkat dari Bandung menudju ke Gn. Semeru, untuk mendjalankan tugas jang lamanja 2 bulan, akan tetapi berhubung jang mengaplos telat datangnja, karena ada sesuatu hal maka tugas kami diperpandjang 1 bulan lagi. Pengawasan Gn. Semeru dari Pos Bs. Sat, Gn. Saw…
At the end of February 1920 by the Sectionhead of the Irrigation at Lumajang was reported, that in that month an abnormal drop of the waterlevel of the Ranu's Klakah and Pakis had taken place. If the Ranu Klakah in normal times always flowed through his nator al outlet, at present it is not like this, as the lake level has drop till 1.5 m below the outlet This even happens during the full W …
Of more importance than the flank eruptions are the excentric eruptions, which are fed from a much more deeper lavaniveau than the first mentioned, whereas the breakthrough mostly takes place in the area of the volcano foot. Also excentric eruptions may entirely independently become active fron the main crater, which at flankeruptions is not likely possible. Also the phenomena, with which excen…
During 1922 the G. Lamongan was often visited by the volcano guideship survey namely in April, June and August.
Gunungapi Lamongan merupakan salah satu gunungapi aktif di Provinsi Jawa Timur, gunungapi bertipe strato yang memiliki banyak ranu(danau) ini muncul di antara dua pegunungan raksasa, Tengger di sebelah barat dan ljang Argopuro di sebelah timur.
Although several times from the surroundings of the Lamongan nevs arrived on eruptions of the volcano, after further investigation appeared, that the observed abnormal phonomena are not to be ascribed to volcanic activity.
The crater of the Lamongan vas visited for the last time in July 1925. Although since that tine no reports on abnornal phenomena were received, the crater was again reconnoitred at the beginning of February 1924, as we must be always on our alert, that the rostful situation of these previously so active volcano suddenly might change.
Zu den tätigsten Vulkanen Ostjavas zährt der LAMONGAN in der Residentschaft PASOEROEAN. Auf der gerechnet Eisenbahnfahrt von PROBOLINGGO nach DJEMBER wird er auf der West-und Südseite lange Zeit umfahren. Man erkennt schon vom Zuge aus, dass er aus 2 Teilen besteht, einen älteren, mit Busch bestandenen und durch die Ero-sion stark sernagten Teil, dem 1670m hohen TAROEB, und einem jungen sch…
In accordance with Lorie and Prof. Behrens we have determined all collected samples as real basalts. The microscopic praeparates only show difference in relative number and size of the separated crystalls between them, and with respect to the groundmass, also in his capacity of the groundmass itself. As conson with basalt, the olivine exclusively appears as porphyric separation and not in the g…
The literature on the Lamongan is less extended than that on the Tengger. The already previously (p.7) referred treatise of van Herwerden and the great work of Junghuhn are up to now the only sources for the knowledge of this remarkable mountain.