Chemistry

Most accidents in a chemical laboratory are the result of carelessness or poor judgment either by the injured person or by a neighbor. Every individual who works in the laboratory must learn and observe the safety rules listed here. In addition you should develop the habit of thingking beforehand about the possible risk in any experimental procedure. Many experiments in this manual hav safety n…

Trace Elements in Igneous Petrology

It was the deep-seated conviction of Paul Gast that the trace element approach was at least as powerful as expertimental petrology to solve the major petrological problems. In this paper, we review the present status of the utilization of trace elements in igneous processes, which acknowledges his opinion. After a study of the historical development of trace element geochemistry which indludes …

G. Gamalama di Pulau Ternate dan Keadaannya dalam Th. 1969

Selama pelawatan penulis ke Ternate dalam permulaan tahun 1969, maka selain telah dilakukannja penidjauan terhadap G. Kie Besi di pulau Makian, G. Gamkonora di Halmaheira dan G. Gamalama telah sempat pula dikundjungi. Adapun pemeriksaan terhadap puncaknya dilakukan oleh rekannya Sdr. S. Hamidi, sedang penulis mengikutiya juga, terutama sebagai juru potret. Dalam karangan ini penulis tambahkan …

Laporan Pemetaan Geologi Gunungapi Kie Besi (Makian), Kab. Maluku Utara, Prov…

Gunungapi Kie Besi (Makian) atau dengan nama lain Wakiong termasuk gunungapi aktif bertipe A, yang berbentuk strato dan merupakan sebuah pulau gunungapi Bentuk strato ini adalah karakteristik dari bentuk-bentuk gunungapi yang ditemukan pada zona "subducting plate margin Berdasarkan acuan dari teratur dan aktifitasnya, tercatat sejak tahun 1550 sampai dengan tahun 1988, terjadi kegiatan erupsi s…

Laporan Pemetaan Geologi G. Api Gamkonora dan Sekitarnya Kab. Maluku Utara (H…

Daerah pemetaan secara administratif, termasuk ke dalam Wilayah Kecamatan Ibu, Kewedanaan Jailolo, Kabupaten Maluku Utara, Propinsi Maluku. Letak geografisnya, berada pada koordinat (1°16'42,5"-1°29′33,6") LU, dan (127'35'17"-127°54'18"BT). Sedangkan posisi G. Gamkonoranya sendiri, terletak pada koordinat 01°22'30" LU dan 127°34'BT dengan ketinggian sekitar 1635 m dpl (Gb. 1). G. G…

Sedimentary Rocks (Third Edition)

A sedimentary deposit is that body of solid materials accumulated at or near the surface of the earth under the low temperatures and pressures which normally characterize thie environment. The sediment is generally, but not always, deposited from a fluid in which it was contained either in a state of suspension or solution. This definition encompass most of the materials considered sediments, a…

Sedimentary Rocks Third Edition

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Sedimentary Rocks (Second Edition)

Geology is primarily history-a history of the earth. Petrology has to do with the history of rocks and sedimentary petrology is concerned with the history of the sedimentary rocks. Statigraphy also has to do with geologic history. The primary task of stratigraphy is to ascertain the order of superposition of the strata at any given place and then to integrate the local geologic column thus cons…

Basalts

Speculation about basalts began early. Pliny's Natural History was published about A.D.77 (see Adams, 1938) and classified basalt as black marble, but he referred to most dense building stone as marble, so probably was implying no genetic link. Although some ancient Greeks and Romans correctly guessed that basalts were related to volcanism, at the end of the Dark Ages basalts was thought to be …

Economic Mineral Deposits

Geologist distinguish between mineral reserves and mineral resources. The term resource refers to hypothetical and speculative, undiscovered, subeconomic mineral deposits or an undiscovered deposit of unknown economic. Reserves are concentrations of a usable mineral or energy commodity, which can be economically and legally extracted at teh time of evaluation. Today, mineral resources have beco…